diff --git a/Gopkg.lock b/Gopkg.lock
index ea23d79..7fbfb07 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -575,14 +575,6 @@
   version = "v1.19.1"
 
 [[projects]]
-  digest = "1:82a18170c9c41e36939cb5d26da1546b2cfa786aa030a978d3bf183519849230"
-  name = "gopkg.in/Shopify/sarama.v1"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "4602b5a8c6e826f9e0737865818dd43b2339a092"
-  version = "v1.21.0"
-
-[[projects]]
   digest = "1:2d1fbdc6777e5408cabeb02bf336305e724b925ff4546ded0fa8715a7267922a"
   name = "gopkg.in/inf.v0"
   packages = ["."]
@@ -767,6 +759,7 @@
   analyzer-name = "dep"
   analyzer-version = 1
   input-imports = [
+    "github.com/Shopify/sarama",
     "github.com/bclicn/color",
     "github.com/boljen/go-bitmap",
     "github.com/bsm/sarama-cluster",
@@ -804,7 +797,6 @@
     "google.golang.org/grpc/keepalive",
     "google.golang.org/grpc/metadata",
     "google.golang.org/grpc/status",
-    "gopkg.in/Shopify/sarama.v1",
     "k8s.io/api/core/v1",
     "k8s.io/apimachinery/pkg/apis/meta/v1",
     "k8s.io/client-go/kubernetes",
diff --git a/Gopkg.toml b/Gopkg.toml
index e96b529..fa3d2b8 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -48,6 +48,10 @@
   version = "2.1.15"
 
 [[constraint]]
+  name = "github.com/Shopify/sarama"
+  version = "1.20.1"
+
+[[constraint]]
   branch = "master"
   name = "github.com/cevaris/ordered_map"
 
@@ -95,10 +99,6 @@
   name = "google.golang.org/grpc"
   version = "1.17.0"
 
-[[constraint]]
-  name = "gopkg.in/Shopify/sarama.v1"
-  version = "1.20.1"
-
 [prune]
   go-tests = true
   unused-packages = true
diff --git a/kafka/sarama_client.go b/kafka/sarama_client.go
index 8037002..9e3ce0c 100755
--- a/kafka/sarama_client.go
+++ b/kafka/sarama_client.go
@@ -18,16 +18,15 @@
 import (
 	"errors"
 	"fmt"
-	"strings"
-	"sync"
-	"time"
-
+	"github.com/Shopify/sarama"
 	scc "github.com/bsm/sarama-cluster"
 	"github.com/golang/protobuf/proto"
 	"github.com/google/uuid"
 	"github.com/opencord/voltha-go/common/log"
 	ic "github.com/opencord/voltha-protos/go/inter_container"
-	"gopkg.in/Shopify/sarama.v1"
+	"strings"
+	"sync"
+	"time"
 )
 
 func init() {
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/.gitignore b/vendor/gopkg.in/Shopify/sarama.v1/.gitignore
deleted file mode 100644
index 6e362e4..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/.gitignore
+++ /dev/null
@@ -1,27 +0,0 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-*.test
-
-# Folders
-_obj
-_test
-.vagrant
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe
-
-coverage.txt
-profile.out
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/.travis.yml b/vendor/gopkg.in/Shopify/sarama.v1/.travis.yml
deleted file mode 100644
index b7f7874..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/.travis.yml
+++ /dev/null
@@ -1,35 +0,0 @@
-language: go
-go:
-- 1.10.x
-- 1.11.x
-
-env:
-  global:
-  - KAFKA_PEERS=localhost:9091,localhost:9092,localhost:9093,localhost:9094,localhost:9095
-  - TOXIPROXY_ADDR=http://localhost:8474
-  - KAFKA_INSTALL_ROOT=/home/travis/kafka
-  - KAFKA_HOSTNAME=localhost
-  - DEBUG=true
-  matrix:
-  - KAFKA_VERSION=1.1.1 KAFKA_SCALA_VERSION=2.11
-  - KAFKA_VERSION=2.0.1 KAFKA_SCALA_VERSION=2.12
-  - KAFKA_VERSION=2.1.0 KAFKA_SCALA_VERSION=2.12
-
-before_install:
-- export REPOSITORY_ROOT=${TRAVIS_BUILD_DIR}
-- vagrant/install_cluster.sh
-- vagrant/boot_cluster.sh
-- vagrant/create_topics.sh
-
-install: make install_dependencies
-
-script:
-- make test
-- make vet
-- make errcheck
-- if [[ "$TRAVIS_GO_VERSION" == 1.11* ]]; then make fmt; fi
-
-after_success:
-- bash <(curl -s https://codecov.io/bash)
-
-after_script: vagrant/halt_cluster.sh
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/CHANGELOG.md b/vendor/gopkg.in/Shopify/sarama.v1/CHANGELOG.md
deleted file mode 100644
index 0e69c2d..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/CHANGELOG.md
+++ /dev/null
@@ -1,683 +0,0 @@
-# Changelog
-
-#### Version 1.21.0 (2019-02-24)
-
-New Features:
-- Add CreateAclRequest, DescribeAclRequest, DeleteAclRequest
-  ([1236](https://github.com/Shopify/sarama/pull/1236)).
-- Add DescribeTopic, DescribeConsumerGroup, ListConsumerGroups, ListConsumerGroupOffsets admin requests
-  ([1178](https://github.com/Shopify/sarama/pull/1178)).
-- Implement SASL/OAUTHBEARER
-  ([1240](https://github.com/Shopify/sarama/pull/1240)).
-
-Improvements:
-- Add Go mod support
-  ([1282](https://github.com/Shopify/sarama/pull/1282)).
-- Add error codes 73—76
-  ([1239](https://github.com/Shopify/sarama/pull/1239)).
-- Add retry backoff function
-  ([1160](https://github.com/Shopify/sarama/pull/1160)).
-- Maintain metadata in the producer even when retries are disabled
-  ([1189](https://github.com/Shopify/sarama/pull/1189)).
-- Include ReplicaAssignment in ListTopics
-  ([1274](https://github.com/Shopify/sarama/pull/1274)).
-- Add producer performance tool
-  ([1222](https://github.com/Shopify/sarama/pull/1222)).
-- Add support LogAppend timestamps
-  ([1258](https://github.com/Shopify/sarama/pull/1258)).
-
-Bug Fixes:
-- Fix potential deadlock when a heartbeat request fails
-  ([1286](https://github.com/Shopify/sarama/pull/1286)).
-- Fix consuming compacted topic
-  ([1227](https://github.com/Shopify/sarama/pull/1227)).
-- Set correct Kafka version for DescribeConfigsRequest v1
-  ([1277](https://github.com/Shopify/sarama/pull/1277)).
-- Update kafka test version
-  ([1273](https://github.com/Shopify/sarama/pull/1273)).
-
-#### Version 1.20.1 (2019-01-10)
-
-New Features:
-- Add optional replica id in offset request
-  ([1100](https://github.com/Shopify/sarama/pull/1100)).
-
-Improvements:
-- Implement DescribeConfigs Request + Response v1 & v2
-  ([1230](https://github.com/Shopify/sarama/pull/1230)).
-- Reuse compression objects
-  ([1185](https://github.com/Shopify/sarama/pull/1185)).
-- Switch from png to svg for GoDoc link in README
-  ([1243](https://github.com/Shopify/sarama/pull/1243)).
-- Fix typo in deprecation notice for FetchResponseBlock.Records
-  ([1242](https://github.com/Shopify/sarama/pull/1242)).
-- Fix typos in consumer metadata response file
-  ([1244](https://github.com/Shopify/sarama/pull/1244)).
-
-Bug Fixes:
-- Revert to individual msg retries for non-idempotent
-  ([1203](https://github.com/Shopify/sarama/pull/1203)).
-- Respect MaxMessageBytes limit for uncompressed messages
-  ([1141](https://github.com/Shopify/sarama/pull/1141)).
-
-#### Version 1.20.0 (2018-12-10)
-
-New Features:
- - Add support for zstd compression
-   ([#1170](https://github.com/Shopify/sarama/pull/1170)).
- - Add support for Idempotent Producer
-   ([#1152](https://github.com/Shopify/sarama/pull/1152)).
- - Add support support for Kafka 2.1.0
-   ([#1229](https://github.com/Shopify/sarama/pull/1229)).
- - Add support support for OffsetCommit request/response pairs versions v1 to v5
-   ([#1201](https://github.com/Shopify/sarama/pull/1201)).
- - Add support support for OffsetFetch request/response pair up to version v5
-   ([#1198](https://github.com/Shopify/sarama/pull/1198)).
-
-Improvements:
- - Export broker's Rack setting
-   ([#1173](https://github.com/Shopify/sarama/pull/1173)).
- - Always use latest patch version of Go on CI
-   ([#1202](https://github.com/Shopify/sarama/pull/1202)).
- - Add error codes 61 to 72
-   ([#1195](https://github.com/Shopify/sarama/pull/1195)).
-
-Bug Fixes:
- - Fix build without cgo
-   ([#1182](https://github.com/Shopify/sarama/pull/1182)).
- - Fix go vet suggestion in consumer group file
-   ([#1209](https://github.com/Shopify/sarama/pull/1209)).
- - Fix typos in code and comments
-   ([#1228](https://github.com/Shopify/sarama/pull/1228)).
-
-#### Version 1.19.0 (2018-09-27)
-
-New Features:
- - Implement a higher-level consumer group
-   ([#1099](https://github.com/Shopify/sarama/pull/1099)).
-
-Improvements:
- - Add support for Go 1.11
-   ([#1176](https://github.com/Shopify/sarama/pull/1176)).
-
-Bug Fixes:
- - Fix encoding of `MetadataResponse` with version 2 and higher
-   ([#1174](https://github.com/Shopify/sarama/pull/1174)).
- - Fix race condition in mock async producer
-   ([#1174](https://github.com/Shopify/sarama/pull/1174)).
-
-#### Version 1.18.0 (2018-09-07)
-
-New Features:
- - Make `Partitioner.RequiresConsistency` vary per-message
-   ([#1112](https://github.com/Shopify/sarama/pull/1112)).
- - Add customizable partitioner
-   ([#1118](https://github.com/Shopify/sarama/pull/1118)).
- - Add `ClusterAdmin` support for `CreateTopic`, `DeleteTopic`, `CreatePartitions`,
-   `DeleteRecords`, `DescribeConfig`, `AlterConfig`, `CreateACL`, `ListAcls`, `DeleteACL`
-   ([#1055](https://github.com/Shopify/sarama/pull/1055)).
-
-Improvements:
- - Add support for Kafka 2.0.0
-   ([#1149](https://github.com/Shopify/sarama/pull/1149)).
- - Allow setting `LocalAddr` when dialing an address to support multi-homed hosts
-   ([#1123](https://github.com/Shopify/sarama/pull/1123)).
- - Simpler offset management
-   ([#1127](https://github.com/Shopify/sarama/pull/1127)).
-
-Bug Fixes:
- - Fix mutation of `ProducerMessage.MetaData` when producing to Kafka
-   ([#1110](https://github.com/Shopify/sarama/pull/1110)).
- - Fix consumer block when response did not contain all the
-   expected topic/partition blocks
-   ([#1086](https://github.com/Shopify/sarama/pull/1086)).
- - Fix consumer block when response contains only constrol messages
-   ([#1115](https://github.com/Shopify/sarama/pull/1115)).
- - Add timeout config for ClusterAdmin requests
-   ([#1142](https://github.com/Shopify/sarama/pull/1142)).
- - Add version check when producing message with headers
-   ([#1117](https://github.com/Shopify/sarama/pull/1117)).
- - Fix `MetadataRequest` for empty list of topics
-   ([#1132](https://github.com/Shopify/sarama/pull/1132)).
- - Fix producer topic metadata on-demand fetch when topic error happens in metadata response
-   ([#1125](https://github.com/Shopify/sarama/pull/1125)).
-
-#### Version 1.17.0 (2018-05-30)
-
-New Features:
- - Add support for gzip compression levels
-   ([#1044](https://github.com/Shopify/sarama/pull/1044)).
- - Add support for Metadata request/response pairs versions v1 to v5
-   ([#1047](https://github.com/Shopify/sarama/pull/1047),
-    [#1069](https://github.com/Shopify/sarama/pull/1069)).
- - Add versioning to JoinGroup request/response pairs
-   ([#1098](https://github.com/Shopify/sarama/pull/1098))
- - Add support for CreatePartitions, DeleteGroups, DeleteRecords request/response pairs
-   ([#1065](https://github.com/Shopify/sarama/pull/1065),
-    [#1096](https://github.com/Shopify/sarama/pull/1096),
-    [#1027](https://github.com/Shopify/sarama/pull/1027)).
- - Add `Controller()` method to Client interface
-   ([#1063](https://github.com/Shopify/sarama/pull/1063)).
-
-Improvements:
- - ConsumerMetadataReq/Resp has been migrated to FindCoordinatorReq/Resp
-   ([#1010](https://github.com/Shopify/sarama/pull/1010)).
- - Expose missing protocol parts: `msgSet` and `recordBatch`
-   ([#1049](https://github.com/Shopify/sarama/pull/1049)).
- - Add support for v1 DeleteTopics Request
-   ([#1052](https://github.com/Shopify/sarama/pull/1052)).
- - Add support for Go 1.10
-   ([#1064](https://github.com/Shopify/sarama/pull/1064)).
- - Claim support for Kafka 1.1.0
-   ([#1073](https://github.com/Shopify/sarama/pull/1073)).
-
-Bug Fixes:
- - Fix FindCoordinatorResponse.encode to allow nil Coordinator
-   ([#1050](https://github.com/Shopify/sarama/pull/1050),
-    [#1051](https://github.com/Shopify/sarama/pull/1051)).
- - Clear all metadata when we have the latest topic info
-   ([#1033](https://github.com/Shopify/sarama/pull/1033)).
- - Make `PartitionConsumer.Close` idempotent
-   ([#1092](https://github.com/Shopify/sarama/pull/1092)).
-
-#### Version 1.16.0 (2018-02-12)
-
-New Features:
- - Add support for the Create/Delete Topics request/response pairs
-   ([#1007](https://github.com/Shopify/sarama/pull/1007),
-    [#1008](https://github.com/Shopify/sarama/pull/1008)).
- - Add support for the Describe/Create/Delete ACL request/response pairs
-   ([#1009](https://github.com/Shopify/sarama/pull/1009)).
- - Add support for the five transaction-related request/response pairs
-   ([#1016](https://github.com/Shopify/sarama/pull/1016)).
-
-Improvements:
- - Permit setting version on mock producer responses
-   ([#999](https://github.com/Shopify/sarama/pull/999)).
- - Add `NewMockBrokerListener` helper for testing TLS connections
-   ([#1019](https://github.com/Shopify/sarama/pull/1019)).
- - Changed the default value for `Consumer.Fetch.Default` from 32KiB to 1MiB
-   which results in much higher throughput in most cases
-   ([#1024](https://github.com/Shopify/sarama/pull/1024)).
- - Reuse the `time.Ticker` across fetch requests in the PartitionConsumer to
-   reduce CPU and memory usage when processing many partitions
-   ([#1028](https://github.com/Shopify/sarama/pull/1028)).
- - Assign relative offsets to messages in the producer to save the brokers a
-   recompression pass
-   ([#1002](https://github.com/Shopify/sarama/pull/1002),
-    [#1015](https://github.com/Shopify/sarama/pull/1015)).
-
-Bug Fixes:
- - Fix producing uncompressed batches with the new protocol format
-   ([#1032](https://github.com/Shopify/sarama/issues/1032)).
- - Fix consuming compacted topics with the new protocol format
-   ([#1005](https://github.com/Shopify/sarama/issues/1005)).
- - Fix consuming topics with a mix of protocol formats
-   ([#1021](https://github.com/Shopify/sarama/issues/1021)).
- - Fix consuming when the broker includes multiple batches in a single response
-   ([#1022](https://github.com/Shopify/sarama/issues/1022)).
- - Fix detection of `PartialTrailingMessage` when the partial message was
-   truncated before the magic value indicating its version
-   ([#1030](https://github.com/Shopify/sarama/pull/1030)).
- - Fix expectation-checking in the mock of `SyncProducer.SendMessages`
-   ([#1035](https://github.com/Shopify/sarama/pull/1035)).
-
-#### Version 1.15.0 (2017-12-08)
-
-New Features:
- - Claim official support for Kafka 1.0, though it did already work
-   ([#984](https://github.com/Shopify/sarama/pull/984)).
- - Helper methods for Kafka version numbers to/from strings
-   ([#989](https://github.com/Shopify/sarama/pull/989)).
- - Implement CreatePartitions request/response
-   ([#985](https://github.com/Shopify/sarama/pull/985)).
-
-Improvements:
- - Add error codes 45-60
-   ([#986](https://github.com/Shopify/sarama/issues/986)).
-
-Bug Fixes:
- - Fix slow consuming for certain Kafka 0.11/1.0 configurations
-   ([#982](https://github.com/Shopify/sarama/pull/982)).
- - Correctly determine when a FetchResponse contains the new message format
-   ([#990](https://github.com/Shopify/sarama/pull/990)).
- - Fix producing with multiple headers
-   ([#996](https://github.com/Shopify/sarama/pull/996)).
- - Fix handling of truncated record batches
-   ([#998](https://github.com/Shopify/sarama/pull/998)).
- - Fix leaking metrics when closing brokers
-   ([#991](https://github.com/Shopify/sarama/pull/991)).
-
-#### Version 1.14.0 (2017-11-13)
-
-New Features:
- - Add support for the new Kafka 0.11 record-batch format, including the wire
-   protocol and the necessary behavioural changes in the producer and consumer.
-   Transactions and idempotency are not yet supported, but producing and
-   consuming should work with all the existing bells and whistles (batching,
-   compression, etc) as well as the new custom headers. Thanks to Vlad Hanciuta
-   of Arista Networks for this work. Part of
-   ([#901](https://github.com/Shopify/sarama/issues/901)).
-
-Bug Fixes:
- - Fix encoding of ProduceResponse versions in test
-   ([#970](https://github.com/Shopify/sarama/pull/970)).
- - Return partial replicas list when we have it
-   ([#975](https://github.com/Shopify/sarama/pull/975)).
-
-#### Version 1.13.0 (2017-10-04)
-
-New Features:
- - Support for FetchRequest version 3
-   ([#905](https://github.com/Shopify/sarama/pull/905)).
- - Permit setting version on mock FetchResponses
-   ([#939](https://github.com/Shopify/sarama/pull/939)).
- - Add a configuration option to support storing only minimal metadata for
-   extremely large clusters
-   ([#937](https://github.com/Shopify/sarama/pull/937)).
- - Add `PartitionOffsetManager.ResetOffset` for backtracking tracked offsets
-   ([#932](https://github.com/Shopify/sarama/pull/932)).
-
-Improvements:
- - Provide the block-level timestamp when consuming compressed messages
-   ([#885](https://github.com/Shopify/sarama/issues/885)).
- - `Client.Replicas` and `Client.InSyncReplicas` now respect the order returned
-   by the broker, which can be meaningful
-   ([#930](https://github.com/Shopify/sarama/pull/930)).
- - Use a `Ticker` to reduce consumer timer overhead at the cost of higher
-   variance in the actual timeout
-   ([#933](https://github.com/Shopify/sarama/pull/933)).
-
-Bug Fixes:
- - Gracefully handle messages with negative timestamps
-   ([#907](https://github.com/Shopify/sarama/pull/907)).
- - Raise a proper error when encountering an unknown message version
-   ([#940](https://github.com/Shopify/sarama/pull/940)).
-
-#### Version 1.12.0 (2017-05-08)
-
-New Features:
- - Added support for the `ApiVersions` request and response pair, and Kafka
-   version 0.10.2 ([#867](https://github.com/Shopify/sarama/pull/867)). Note
-   that you still need to specify the Kafka version in the Sarama configuration
-   for the time being.
- - Added a `Brokers` method to the Client which returns the complete set of
-   active brokers ([#813](https://github.com/Shopify/sarama/pull/813)).
- - Added an `InSyncReplicas` method to the Client which returns the set of all
-   in-sync broker IDs for the given partition, now that the Kafka versions for
-   which this was misleading are no longer in our supported set
-   ([#872](https://github.com/Shopify/sarama/pull/872)).
- - Added a `NewCustomHashPartitioner` method which allows constructing a hash
-   partitioner with a custom hash method in case the default (FNV-1a) is not
-   suitable
-   ([#837](https://github.com/Shopify/sarama/pull/837),
-    [#841](https://github.com/Shopify/sarama/pull/841)).
-
-Improvements:
- - Recognize more Kafka error codes
-   ([#859](https://github.com/Shopify/sarama/pull/859)).
-
-Bug Fixes:
- - Fix an issue where decoding a malformed FetchRequest would not return the
-   correct error ([#818](https://github.com/Shopify/sarama/pull/818)).
- - Respect ordering of group protocols in JoinGroupRequests. This fix is
-   transparent if you're using the `AddGroupProtocol` or
-   `AddGroupProtocolMetadata` helpers; otherwise you will need to switch from
-   the `GroupProtocols` field (now deprecated) to use `OrderedGroupProtocols`
-   ([#812](https://github.com/Shopify/sarama/issues/812)).
- - Fix an alignment-related issue with atomics on 32-bit architectures
-   ([#859](https://github.com/Shopify/sarama/pull/859)).
-
-#### Version 1.11.0 (2016-12-20)
-
-_Important:_ As of Sarama 1.11 it is necessary to set the config value of
-`Producer.Return.Successes` to true in order to use the SyncProducer. Previous
-versions would silently override this value when instantiating a SyncProducer
-which led to unexpected values and data races.
-
-New Features:
- - Metrics! Thanks to Sébastien Launay for all his work on this feature
-   ([#701](https://github.com/Shopify/sarama/pull/701),
-    [#746](https://github.com/Shopify/sarama/pull/746),
-    [#766](https://github.com/Shopify/sarama/pull/766)).
- - Add support for LZ4 compression
-   ([#786](https://github.com/Shopify/sarama/pull/786)).
- - Add support for ListOffsetRequest v1 and Kafka 0.10.1
-   ([#775](https://github.com/Shopify/sarama/pull/775)).
- - Added a `HighWaterMarks` method to the Consumer which aggregates the
-   `HighWaterMarkOffset` values of its child topic/partitions
-   ([#769](https://github.com/Shopify/sarama/pull/769)).
-
-Bug Fixes:
- - Fixed producing when using timestamps, compression and Kafka 0.10
-   ([#759](https://github.com/Shopify/sarama/pull/759)).
- - Added missing decoder methods to DescribeGroups response
-   ([#756](https://github.com/Shopify/sarama/pull/756)).
- - Fix producer shutdown when `Return.Errors` is disabled
-   ([#787](https://github.com/Shopify/sarama/pull/787)).
- - Don't mutate configuration in SyncProducer
-   ([#790](https://github.com/Shopify/sarama/pull/790)).
- - Fix crash on SASL initialization failure
-   ([#795](https://github.com/Shopify/sarama/pull/795)).
-
-#### Version 1.10.1 (2016-08-30)
-
-Bug Fixes:
- - Fix the documentation for `HashPartitioner` which was incorrect
-   ([#717](https://github.com/Shopify/sarama/pull/717)).
- - Permit client creation even when it is limited by ACLs
-   ([#722](https://github.com/Shopify/sarama/pull/722)).
- - Several fixes to the consumer timer optimization code, regressions introduced
-   in v1.10.0. Go's timers are finicky
-   ([#730](https://github.com/Shopify/sarama/pull/730),
-    [#733](https://github.com/Shopify/sarama/pull/733),
-    [#734](https://github.com/Shopify/sarama/pull/734)).
- - Handle consuming compressed relative offsets with Kafka 0.10
-   ([#735](https://github.com/Shopify/sarama/pull/735)).
-
-#### Version 1.10.0 (2016-08-02)
-
-_Important:_ As of Sarama 1.10 it is necessary to tell Sarama the version of
-Kafka you are running against (via the `config.Version` value) in order to use
-features that may not be compatible with old Kafka versions. If you don't
-specify this value it will default to 0.8.2 (the minimum supported), and trying
-to use more recent features (like the offset manager) will fail with an error.
-
-_Also:_ The offset-manager's behaviour has been changed to match the upstream
-java consumer (see [#705](https://github.com/Shopify/sarama/pull/705) and
-[#713](https://github.com/Shopify/sarama/pull/713)). If you use the
-offset-manager, please ensure that you are committing one *greater* than the
-last consumed message offset or else you may end up consuming duplicate
-messages.
-
-New Features:
- - Support for Kafka 0.10
-   ([#672](https://github.com/Shopify/sarama/pull/672),
-    [#678](https://github.com/Shopify/sarama/pull/678),
-    [#681](https://github.com/Shopify/sarama/pull/681), and others).
- - Support for configuring the target Kafka version
-   ([#676](https://github.com/Shopify/sarama/pull/676)).
- - Batch producing support in the SyncProducer
-   ([#677](https://github.com/Shopify/sarama/pull/677)).
- - Extend producer mock to allow setting expectations on message contents
-   ([#667](https://github.com/Shopify/sarama/pull/667)).
-
-Improvements:
- - Support `nil` compressed messages for deleting in compacted topics
-   ([#634](https://github.com/Shopify/sarama/pull/634)).
- - Pre-allocate decoding errors, greatly reducing heap usage and GC time against
-   misbehaving brokers ([#690](https://github.com/Shopify/sarama/pull/690)).
- - Re-use consumer expiry timers, removing one allocation per consumed message
-   ([#707](https://github.com/Shopify/sarama/pull/707)).
-
-Bug Fixes:
- - Actually default the client ID to "sarama" like we say we do
-   ([#664](https://github.com/Shopify/sarama/pull/664)).
- - Fix a rare issue where `Client.Leader` could return the wrong error
-   ([#685](https://github.com/Shopify/sarama/pull/685)).
- - Fix a possible tight loop in the consumer
-   ([#693](https://github.com/Shopify/sarama/pull/693)).
- - Match upstream's offset-tracking behaviour
-   ([#705](https://github.com/Shopify/sarama/pull/705)).
- - Report UnknownTopicOrPartition errors from the offset manager
-   ([#706](https://github.com/Shopify/sarama/pull/706)).
- - Fix possible negative partition value from the HashPartitioner
-   ([#709](https://github.com/Shopify/sarama/pull/709)).
-
-#### Version 1.9.0 (2016-05-16)
-
-New Features:
- - Add support for custom offset manager retention durations
-   ([#602](https://github.com/Shopify/sarama/pull/602)).
- - Publish low-level mocks to enable testing of third-party producer/consumer
-   implementations ([#570](https://github.com/Shopify/sarama/pull/570)).
- - Declare support for Golang 1.6
-   ([#611](https://github.com/Shopify/sarama/pull/611)).
- - Support for SASL plain-text auth
-   ([#648](https://github.com/Shopify/sarama/pull/648)).
-
-Improvements:
- - Simplified broker locking scheme slightly
-   ([#604](https://github.com/Shopify/sarama/pull/604)).
- - Documentation cleanup
-   ([#605](https://github.com/Shopify/sarama/pull/605),
-    [#621](https://github.com/Shopify/sarama/pull/621),
-    [#654](https://github.com/Shopify/sarama/pull/654)).
-
-Bug Fixes:
- - Fix race condition shutting down the OffsetManager
-   ([#658](https://github.com/Shopify/sarama/pull/658)).
-
-#### Version 1.8.0 (2016-02-01)
-
-New Features:
- - Full support for Kafka 0.9:
-   - All protocol messages and fields
-   ([#586](https://github.com/Shopify/sarama/pull/586),
-   [#588](https://github.com/Shopify/sarama/pull/588),
-   [#590](https://github.com/Shopify/sarama/pull/590)).
-   - Verified that TLS support works
-   ([#581](https://github.com/Shopify/sarama/pull/581)).
-   - Fixed the OffsetManager compatibility
-   ([#585](https://github.com/Shopify/sarama/pull/585)).
-
-Improvements:
- - Optimize for fewer system calls when reading from the network
-   ([#584](https://github.com/Shopify/sarama/pull/584)).
- - Automatically retry `InvalidMessage` errors to match upstream behaviour
-   ([#589](https://github.com/Shopify/sarama/pull/589)).
-
-#### Version 1.7.0 (2015-12-11)
-
-New Features:
- - Preliminary support for Kafka 0.9
-   ([#572](https://github.com/Shopify/sarama/pull/572)). This comes with several
-   caveats:
-   - Protocol-layer support is mostly in place
-     ([#577](https://github.com/Shopify/sarama/pull/577)), however Kafka 0.9
-     renamed some messages and fields, which we did not in order to preserve API
-     compatibility.
-   - The producer and consumer work against 0.9, but the offset manager does
-     not ([#573](https://github.com/Shopify/sarama/pull/573)).
-   - TLS support may or may not work
-     ([#581](https://github.com/Shopify/sarama/pull/581)).
-
-Improvements:
- - Don't wait for request timeouts on dead brokers, greatly speeding recovery
-   when the TCP connection is left hanging
-   ([#548](https://github.com/Shopify/sarama/pull/548)).
- - Refactored part of the producer. The new version provides a much more elegant
-   solution to [#449](https://github.com/Shopify/sarama/pull/449). It is also
-   slightly more efficient, and much more precise in calculating batch sizes
-   when compression is used
-   ([#549](https://github.com/Shopify/sarama/pull/549),
-   [#550](https://github.com/Shopify/sarama/pull/550),
-   [#551](https://github.com/Shopify/sarama/pull/551)).
-
-Bug Fixes:
- - Fix race condition in consumer test mock
-   ([#553](https://github.com/Shopify/sarama/pull/553)).
-
-#### Version 1.6.1 (2015-09-25)
-
-Bug Fixes:
- - Fix panic that could occur if a user-supplied message value failed to encode
-   ([#449](https://github.com/Shopify/sarama/pull/449)).
-
-#### Version 1.6.0 (2015-09-04)
-
-New Features:
- - Implementation of a consumer offset manager using the APIs introduced in
-   Kafka 0.8.2. The API is designed mainly for integration into a future
-   high-level consumer, not for direct use, although it is *possible* to use it
-   directly.
-   ([#461](https://github.com/Shopify/sarama/pull/461)).
-
-Improvements:
- - CRC32 calculation is much faster on machines with SSE4.2 instructions,
-   removing a major hotspot from most profiles
-   ([#255](https://github.com/Shopify/sarama/pull/255)).
-
-Bug Fixes:
- - Make protocol decoding more robust against some malformed packets generated
-   by go-fuzz ([#523](https://github.com/Shopify/sarama/pull/523),
-   [#525](https://github.com/Shopify/sarama/pull/525)) or found in other ways
-   ([#528](https://github.com/Shopify/sarama/pull/528)).
- - Fix a potential race condition panic in the consumer on shutdown
-   ([#529](https://github.com/Shopify/sarama/pull/529)).
-
-#### Version 1.5.0 (2015-08-17)
-
-New Features:
- - TLS-encrypted network connections are now supported. This feature is subject
-   to change when Kafka releases built-in TLS support, but for now this is
-   enough to work with TLS-terminating proxies
-   ([#154](https://github.com/Shopify/sarama/pull/154)).
-
-Improvements:
- - The consumer will not block if a single partition is not drained by the user;
-   all other partitions will continue to consume normally
-   ([#485](https://github.com/Shopify/sarama/pull/485)).
- - Formatting of error strings has been much improved
-   ([#495](https://github.com/Shopify/sarama/pull/495)).
- - Internal refactoring of the producer for code cleanliness and to enable
-   future work ([#300](https://github.com/Shopify/sarama/pull/300)).
-
-Bug Fixes:
- - Fix a potential deadlock in the consumer on shutdown
-   ([#475](https://github.com/Shopify/sarama/pull/475)).
-
-#### Version 1.4.3 (2015-07-21)
-
-Bug Fixes:
- - Don't include the partitioner in the producer's "fetch partitions"
-   circuit-breaker ([#466](https://github.com/Shopify/sarama/pull/466)).
- - Don't retry messages until the broker is closed when abandoning a broker in
-   the producer ([#468](https://github.com/Shopify/sarama/pull/468)).
- - Update the import path for snappy-go, it has moved again and the API has
-   changed slightly ([#486](https://github.com/Shopify/sarama/pull/486)).
-
-#### Version 1.4.2 (2015-05-27)
-
-Bug Fixes:
- - Update the import path for snappy-go, it has moved from google code to github
-   ([#456](https://github.com/Shopify/sarama/pull/456)).
-
-#### Version 1.4.1 (2015-05-25)
-
-Improvements:
- - Optimizations when decoding snappy messages, thanks to John Potocny
-   ([#446](https://github.com/Shopify/sarama/pull/446)).
-
-Bug Fixes:
- - Fix hypothetical race conditions on producer shutdown
-   ([#450](https://github.com/Shopify/sarama/pull/450),
-   [#451](https://github.com/Shopify/sarama/pull/451)).
-
-#### Version 1.4.0 (2015-05-01)
-
-New Features:
- - The consumer now implements `Topics()` and `Partitions()` methods to enable
-   users to dynamically choose what topics/partitions to consume without
-   instantiating a full client
-   ([#431](https://github.com/Shopify/sarama/pull/431)).
- - The partition-consumer now exposes the high water mark offset value returned
-   by the broker via the `HighWaterMarkOffset()` method ([#339](https://github.com/Shopify/sarama/pull/339)).
- - Added a `kafka-console-consumer` tool capable of handling multiple
-   partitions, and deprecated the now-obsolete `kafka-console-partitionConsumer`
-   ([#439](https://github.com/Shopify/sarama/pull/439),
-   [#442](https://github.com/Shopify/sarama/pull/442)).
-
-Improvements:
- - The producer's logging during retry scenarios is more consistent, more
-   useful, and slightly less verbose
-   ([#429](https://github.com/Shopify/sarama/pull/429)).
- - The client now shuffles its initial list of seed brokers in order to prevent
-   thundering herd on the first broker in the list
-   ([#441](https://github.com/Shopify/sarama/pull/441)).
-
-Bug Fixes:
- - The producer now correctly manages its state if retries occur when it is
-   shutting down, fixing several instances of confusing behaviour and at least
-   one potential deadlock ([#419](https://github.com/Shopify/sarama/pull/419)).
- - The consumer now handles messages for different partitions asynchronously,
-   making it much more resilient to specific user code ordering
-   ([#325](https://github.com/Shopify/sarama/pull/325)).
-
-#### Version 1.3.0 (2015-04-16)
-
-New Features:
- - The client now tracks consumer group coordinators using
-   ConsumerMetadataRequests similar to how it tracks partition leadership using
-   regular MetadataRequests ([#411](https://github.com/Shopify/sarama/pull/411)).
-   This adds two methods to the client API:
-   - `Coordinator(consumerGroup string) (*Broker, error)`
-   - `RefreshCoordinator(consumerGroup string) error`
-
-Improvements:
- - ConsumerMetadataResponses now automatically create a Broker object out of the
-   ID/address/port combination for the Coordinator; accessing the fields
-   individually has been deprecated
-   ([#413](https://github.com/Shopify/sarama/pull/413)).
- - Much improved handling of `OffsetOutOfRange` errors in the consumer.
-   Consumers will fail to start if the provided offset is out of range
-   ([#418](https://github.com/Shopify/sarama/pull/418))
-   and they will automatically shut down if the offset falls out of range
-   ([#424](https://github.com/Shopify/sarama/pull/424)).
- - Small performance improvement in encoding and decoding protocol messages
-   ([#427](https://github.com/Shopify/sarama/pull/427)).
-
-Bug Fixes:
- - Fix a rare race condition in the client's background metadata refresher if
-   it happens to be activated while the client is being closed
-   ([#422](https://github.com/Shopify/sarama/pull/422)).
-
-#### Version 1.2.0 (2015-04-07)
-
-Improvements:
- - The producer's behaviour when `Flush.Frequency` is set is now more intuitive
-   ([#389](https://github.com/Shopify/sarama/pull/389)).
- - The producer is now somewhat more memory-efficient during and after retrying
-   messages due to an improved queue implementation
-   ([#396](https://github.com/Shopify/sarama/pull/396)).
- - The consumer produces much more useful logging output when leadership
-   changes ([#385](https://github.com/Shopify/sarama/pull/385)).
- - The client's `GetOffset` method will now automatically refresh metadata and
-   retry once in the event of stale information or similar
-   ([#394](https://github.com/Shopify/sarama/pull/394)).
- - Broker connections now have support for using TCP keepalives
-   ([#407](https://github.com/Shopify/sarama/issues/407)).
-
-Bug Fixes:
- - The OffsetCommitRequest message now correctly implements all three possible
-   API versions ([#390](https://github.com/Shopify/sarama/pull/390),
-   [#400](https://github.com/Shopify/sarama/pull/400)).
-
-#### Version 1.1.0 (2015-03-20)
-
-Improvements:
- - Wrap the producer's partitioner call in a circuit-breaker so that repeatedly
-   broken topics don't choke throughput
-   ([#373](https://github.com/Shopify/sarama/pull/373)).
-
-Bug Fixes:
- - Fix the producer's internal reference counting in certain unusual scenarios
-   ([#367](https://github.com/Shopify/sarama/pull/367)).
- - Fix the consumer's internal reference counting in certain unusual scenarios
-   ([#369](https://github.com/Shopify/sarama/pull/369)).
- - Fix a condition where the producer's internal control messages could have
-   gotten stuck ([#368](https://github.com/Shopify/sarama/pull/368)).
- - Fix an issue where invalid partition lists would be cached when asking for
-   metadata for a non-existant topic ([#372](https://github.com/Shopify/sarama/pull/372)).
-
-
-#### Version 1.0.0 (2015-03-17)
-
-Version 1.0.0 is the first tagged version, and is almost a complete rewrite. The primary differences with previous untagged versions are:
-
-- The producer has been rewritten; there is now a `SyncProducer` with a blocking API, and an `AsyncProducer` that is non-blocking.
-- The consumer has been rewritten to only open one connection per broker instead of one connection per partition.
-- The main types of Sarama are now interfaces to make depedency injection easy; mock implementations for `Consumer`, `SyncProducer` and `AsyncProducer` are provided in the `github.com/Shopify/sarama/mocks` package.
-- For most uses cases, it is no longer necessary to open a `Client`; this will be done for you.
-- All the configuration values have been unified in the `Config` struct.
-- Much improved test suite.
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/LICENSE b/vendor/gopkg.in/Shopify/sarama.v1/LICENSE
deleted file mode 100644
index d2bf435..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/LICENSE
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2013 Shopify
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/Makefile b/vendor/gopkg.in/Shopify/sarama.v1/Makefile
deleted file mode 100644
index 09f743c..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/Makefile
+++ /dev/null
@@ -1,32 +0,0 @@
-export GO111MODULE=on
-
-default: fmt vet errcheck test
-
-# Taken from https://github.com/codecov/example-go#caveat-multiple-files
-test:
-	echo "" > coverage.txt
-	for d in `go list ./... | grep -v vendor`; do \
-		go test -p 1 -v -timeout 240s -race -coverprofile=profile.out -covermode=atomic $$d || exit 1; \
-		if [ -f profile.out ]; then \
-			cat profile.out >> coverage.txt; \
-			rm profile.out; \
-		fi \
-	done
-
-vet:
-	go vet ./...
-
-# See https://github.com/kisielk/errcheck/pull/141 for details on ignorepkg
-errcheck:
-	errcheck -ignorepkg fmt github.com/Shopify/sarama/...
-
-fmt:
-	@if [ -n "$$(go fmt ./...)" ]; then echo 'Please run go fmt on your code.' && exit 1; fi
-
-install_dependencies: install_errcheck get
-
-install_errcheck:
-	go get github.com/kisielk/errcheck
-
-get:
-	go get -t
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/README.md b/vendor/gopkg.in/Shopify/sarama.v1/README.md
deleted file mode 100644
index f241b89..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/README.md
+++ /dev/null
@@ -1,39 +0,0 @@
-sarama
-======
-
-[![GoDoc](https://godoc.org/github.com/Shopify/sarama?status.svg)](https://godoc.org/github.com/Shopify/sarama)
-[![Build Status](https://travis-ci.org/Shopify/sarama.svg?branch=master)](https://travis-ci.org/Shopify/sarama)
-[![Coverage](https://codecov.io/gh/Shopify/sarama/branch/master/graph/badge.svg)](https://codecov.io/gh/Shopify/sarama)
-
-Sarama is an MIT-licensed Go client library for [Apache Kafka](https://kafka.apache.org/) version 0.8 (and later).
-
-### Getting started
-
-- API documentation and examples are available via [godoc](https://godoc.org/github.com/Shopify/sarama).
-- Mocks for testing are available in the [mocks](./mocks) subpackage.
-- The [examples](./examples) directory contains more elaborate example applications.
-- The [tools](./tools) directory contains command line tools that can be useful for testing, diagnostics, and instrumentation.
-
-You might also want to look at the [Frequently Asked Questions](https://github.com/Shopify/sarama/wiki/Frequently-Asked-Questions).
-
-### Compatibility and API stability
-
-Sarama provides a "2 releases + 2 months" compatibility guarantee: we support
-the two latest stable releases of Kafka and Go, and we provide a two month
-grace period for older releases. This means we currently officially support
-Go 1.8 through 1.11, and Kafka 1.0 through 2.0, although older releases are
-still likely to work.
-
-Sarama follows semantic versioning and provides API stability via the gopkg.in service.
-You can import a version with a guaranteed stable API via http://gopkg.in/Shopify/sarama.v1.
-A changelog is available [here](CHANGELOG.md).
-
-### Contributing
-
-* Get started by checking our [contribution guidelines](https://github.com/Shopify/sarama/blob/master/.github/CONTRIBUTING.md).
-* Read the [Sarama wiki](https://github.com/Shopify/sarama/wiki) for more
-  technical and design details.
-* The [Kafka Protocol Specification](https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol)
-  contains a wealth of useful information.
-* For more general issues, there is [a google group](https://groups.google.com/forum/#!forum/kafka-clients) for Kafka client developers.
-* If you have any questions, just ask!
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/Vagrantfile b/vendor/gopkg.in/Shopify/sarama.v1/Vagrantfile
deleted file mode 100644
index f4b848a..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/Vagrantfile
+++ /dev/null
@@ -1,20 +0,0 @@
-# -*- mode: ruby -*-
-# vi: set ft=ruby :
-
-# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
-VAGRANTFILE_API_VERSION = "2"
-
-# We have 5 * 192MB ZK processes and 5 * 320MB Kafka processes => 2560MB
-MEMORY = 3072
-
-Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
-  config.vm.box = "ubuntu/trusty64"
-
-  config.vm.provision :shell, path: "vagrant/provision.sh"
-
-  config.vm.network "private_network", ip: "192.168.100.67"
-
-  config.vm.provider "virtualbox" do |v|
-    v.memory = MEMORY
-  end
-end
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/acl_bindings.go b/vendor/gopkg.in/Shopify/sarama.v1/acl_bindings.go
deleted file mode 100644
index b91c282..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/acl_bindings.go
+++ /dev/null
@@ -1,135 +0,0 @@
-package sarama
-
-type Resource struct {
-	ResourceType       AclResourceType
-	ResourceName       string
-	ResoucePatternType AclResourcePatternType
-}
-
-func (r *Resource) encode(pe packetEncoder, version int16) error {
-	pe.putInt8(int8(r.ResourceType))
-
-	if err := pe.putString(r.ResourceName); err != nil {
-		return err
-	}
-
-	if version == 1 {
-		if r.ResoucePatternType == AclPatternUnknown {
-			Logger.Print("Cannot encode an unknown resource pattern type, using Literal instead")
-			r.ResoucePatternType = AclPatternLiteral
-		}
-		pe.putInt8(int8(r.ResoucePatternType))
-	}
-
-	return nil
-}
-
-func (r *Resource) decode(pd packetDecoder, version int16) (err error) {
-	resourceType, err := pd.getInt8()
-	if err != nil {
-		return err
-	}
-	r.ResourceType = AclResourceType(resourceType)
-
-	if r.ResourceName, err = pd.getString(); err != nil {
-		return err
-	}
-	if version == 1 {
-		pattern, err := pd.getInt8()
-		if err != nil {
-			return err
-		}
-		r.ResoucePatternType = AclResourcePatternType(pattern)
-	}
-
-	return nil
-}
-
-type Acl struct {
-	Principal      string
-	Host           string
-	Operation      AclOperation
-	PermissionType AclPermissionType
-}
-
-func (a *Acl) encode(pe packetEncoder) error {
-	if err := pe.putString(a.Principal); err != nil {
-		return err
-	}
-
-	if err := pe.putString(a.Host); err != nil {
-		return err
-	}
-
-	pe.putInt8(int8(a.Operation))
-	pe.putInt8(int8(a.PermissionType))
-
-	return nil
-}
-
-func (a *Acl) decode(pd packetDecoder, version int16) (err error) {
-	if a.Principal, err = pd.getString(); err != nil {
-		return err
-	}
-
-	if a.Host, err = pd.getString(); err != nil {
-		return err
-	}
-
-	operation, err := pd.getInt8()
-	if err != nil {
-		return err
-	}
-	a.Operation = AclOperation(operation)
-
-	permissionType, err := pd.getInt8()
-	if err != nil {
-		return err
-	}
-	a.PermissionType = AclPermissionType(permissionType)
-
-	return nil
-}
-
-type ResourceAcls struct {
-	Resource
-	Acls []*Acl
-}
-
-func (r *ResourceAcls) encode(pe packetEncoder, version int16) error {
-	if err := r.Resource.encode(pe, version); err != nil {
-		return err
-	}
-
-	if err := pe.putArrayLength(len(r.Acls)); err != nil {
-		return err
-	}
-	for _, acl := range r.Acls {
-		if err := acl.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *ResourceAcls) decode(pd packetDecoder, version int16) error {
-	if err := r.Resource.decode(pd, version); err != nil {
-		return err
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Acls = make([]*Acl, n)
-	for i := 0; i < n; i++ {
-		r.Acls[i] = new(Acl)
-		if err := r.Acls[i].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/acl_create_request.go b/vendor/gopkg.in/Shopify/sarama.v1/acl_create_request.go
deleted file mode 100644
index d3d5ad8..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/acl_create_request.go
+++ /dev/null
@@ -1,83 +0,0 @@
-package sarama
-
-type CreateAclsRequest struct {
-	Version      int16
-	AclCreations []*AclCreation
-}
-
-func (c *CreateAclsRequest) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(c.AclCreations)); err != nil {
-		return err
-	}
-
-	for _, aclCreation := range c.AclCreations {
-		if err := aclCreation.encode(pe, c.Version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (c *CreateAclsRequest) decode(pd packetDecoder, version int16) (err error) {
-	c.Version = version
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	c.AclCreations = make([]*AclCreation, n)
-
-	for i := 0; i < n; i++ {
-		c.AclCreations[i] = new(AclCreation)
-		if err := c.AclCreations[i].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (d *CreateAclsRequest) key() int16 {
-	return 30
-}
-
-func (d *CreateAclsRequest) version() int16 {
-	return d.Version
-}
-
-func (d *CreateAclsRequest) requiredVersion() KafkaVersion {
-	switch d.Version {
-	case 1:
-		return V2_0_0_0
-	default:
-		return V0_11_0_0
-	}
-}
-
-type AclCreation struct {
-	Resource
-	Acl
-}
-
-func (a *AclCreation) encode(pe packetEncoder, version int16) error {
-	if err := a.Resource.encode(pe, version); err != nil {
-		return err
-	}
-	if err := a.Acl.encode(pe); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (a *AclCreation) decode(pd packetDecoder, version int16) (err error) {
-	if err := a.Resource.decode(pd, version); err != nil {
-		return err
-	}
-	if err := a.Acl.decode(pd, version); err != nil {
-		return err
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/acl_create_response.go b/vendor/gopkg.in/Shopify/sarama.v1/acl_create_response.go
deleted file mode 100644
index 8a56f35..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/acl_create_response.go
+++ /dev/null
@@ -1,88 +0,0 @@
-package sarama
-
-import "time"
-
-type CreateAclsResponse struct {
-	ThrottleTime         time.Duration
-	AclCreationResponses []*AclCreationResponse
-}
-
-func (c *CreateAclsResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(c.ThrottleTime / time.Millisecond))
-
-	if err := pe.putArrayLength(len(c.AclCreationResponses)); err != nil {
-		return err
-	}
-
-	for _, aclCreationResponse := range c.AclCreationResponses {
-		if err := aclCreationResponse.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (c *CreateAclsResponse) decode(pd packetDecoder, version int16) (err error) {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	c.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	c.AclCreationResponses = make([]*AclCreationResponse, n)
-	for i := 0; i < n; i++ {
-		c.AclCreationResponses[i] = new(AclCreationResponse)
-		if err := c.AclCreationResponses[i].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (d *CreateAclsResponse) key() int16 {
-	return 30
-}
-
-func (d *CreateAclsResponse) version() int16 {
-	return 0
-}
-
-func (d *CreateAclsResponse) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
-
-type AclCreationResponse struct {
-	Err    KError
-	ErrMsg *string
-}
-
-func (a *AclCreationResponse) encode(pe packetEncoder) error {
-	pe.putInt16(int16(a.Err))
-
-	if err := pe.putNullableString(a.ErrMsg); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (a *AclCreationResponse) decode(pd packetDecoder, version int16) (err error) {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	a.Err = KError(kerr)
-
-	if a.ErrMsg, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/acl_delete_request.go b/vendor/gopkg.in/Shopify/sarama.v1/acl_delete_request.go
deleted file mode 100644
index 5e94ad7..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/acl_delete_request.go
+++ /dev/null
@@ -1,57 +0,0 @@
-package sarama
-
-type DeleteAclsRequest struct {
-	Version int
-	Filters []*AclFilter
-}
-
-func (d *DeleteAclsRequest) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(d.Filters)); err != nil {
-		return err
-	}
-
-	for _, filter := range d.Filters {
-		filter.Version = d.Version
-		if err := filter.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (d *DeleteAclsRequest) decode(pd packetDecoder, version int16) (err error) {
-	d.Version = int(version)
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	d.Filters = make([]*AclFilter, n)
-	for i := 0; i < n; i++ {
-		d.Filters[i] = new(AclFilter)
-		d.Filters[i].Version = int(version)
-		if err := d.Filters[i].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (d *DeleteAclsRequest) key() int16 {
-	return 31
-}
-
-func (d *DeleteAclsRequest) version() int16 {
-	return int16(d.Version)
-}
-
-func (d *DeleteAclsRequest) requiredVersion() KafkaVersion {
-	switch d.Version {
-	case 1:
-		return V2_0_0_0
-	default:
-		return V0_11_0_0
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/acl_delete_response.go b/vendor/gopkg.in/Shopify/sarama.v1/acl_delete_response.go
deleted file mode 100644
index a885fe5..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/acl_delete_response.go
+++ /dev/null
@@ -1,156 +0,0 @@
-package sarama
-
-import "time"
-
-type DeleteAclsResponse struct {
-	Version         int16
-	ThrottleTime    time.Duration
-	FilterResponses []*FilterResponse
-}
-
-func (a *DeleteAclsResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(a.ThrottleTime / time.Millisecond))
-
-	if err := pe.putArrayLength(len(a.FilterResponses)); err != nil {
-		return err
-	}
-
-	for _, filterResponse := range a.FilterResponses {
-		if err := filterResponse.encode(pe, a.Version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (a *DeleteAclsResponse) decode(pd packetDecoder, version int16) (err error) {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	a.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	a.FilterResponses = make([]*FilterResponse, n)
-
-	for i := 0; i < n; i++ {
-		a.FilterResponses[i] = new(FilterResponse)
-		if err := a.FilterResponses[i].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (d *DeleteAclsResponse) key() int16 {
-	return 31
-}
-
-func (d *DeleteAclsResponse) version() int16 {
-	return int16(d.Version)
-}
-
-func (d *DeleteAclsResponse) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
-
-type FilterResponse struct {
-	Err          KError
-	ErrMsg       *string
-	MatchingAcls []*MatchingAcl
-}
-
-func (f *FilterResponse) encode(pe packetEncoder, version int16) error {
-	pe.putInt16(int16(f.Err))
-	if err := pe.putNullableString(f.ErrMsg); err != nil {
-		return err
-	}
-
-	if err := pe.putArrayLength(len(f.MatchingAcls)); err != nil {
-		return err
-	}
-	for _, matchingAcl := range f.MatchingAcls {
-		if err := matchingAcl.encode(pe, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (f *FilterResponse) decode(pd packetDecoder, version int16) (err error) {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	f.Err = KError(kerr)
-
-	if f.ErrMsg, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	f.MatchingAcls = make([]*MatchingAcl, n)
-	for i := 0; i < n; i++ {
-		f.MatchingAcls[i] = new(MatchingAcl)
-		if err := f.MatchingAcls[i].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-type MatchingAcl struct {
-	Err    KError
-	ErrMsg *string
-	Resource
-	Acl
-}
-
-func (m *MatchingAcl) encode(pe packetEncoder, version int16) error {
-	pe.putInt16(int16(m.Err))
-	if err := pe.putNullableString(m.ErrMsg); err != nil {
-		return err
-	}
-
-	if err := m.Resource.encode(pe, version); err != nil {
-		return err
-	}
-
-	if err := m.Acl.encode(pe); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (m *MatchingAcl) decode(pd packetDecoder, version int16) (err error) {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	m.Err = KError(kerr)
-
-	if m.ErrMsg, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	if err := m.Resource.decode(pd, version); err != nil {
-		return err
-	}
-
-	if err := m.Acl.decode(pd, version); err != nil {
-		return err
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/acl_describe_request.go b/vendor/gopkg.in/Shopify/sarama.v1/acl_describe_request.go
deleted file mode 100644
index 3c95320..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/acl_describe_request.go
+++ /dev/null
@@ -1,34 +0,0 @@
-package sarama
-
-type DescribeAclsRequest struct {
-	Version int
-	AclFilter
-}
-
-func (d *DescribeAclsRequest) encode(pe packetEncoder) error {
-	d.AclFilter.Version = d.Version
-	return d.AclFilter.encode(pe)
-}
-
-func (d *DescribeAclsRequest) decode(pd packetDecoder, version int16) (err error) {
-	d.Version = int(version)
-	d.AclFilter.Version = int(version)
-	return d.AclFilter.decode(pd, version)
-}
-
-func (d *DescribeAclsRequest) key() int16 {
-	return 29
-}
-
-func (d *DescribeAclsRequest) version() int16 {
-	return int16(d.Version)
-}
-
-func (d *DescribeAclsRequest) requiredVersion() KafkaVersion {
-	switch d.Version {
-	case 1:
-		return V2_0_0_0
-	default:
-		return V0_11_0_0
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/acl_describe_response.go b/vendor/gopkg.in/Shopify/sarama.v1/acl_describe_response.go
deleted file mode 100644
index db3a88c..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/acl_describe_response.go
+++ /dev/null
@@ -1,86 +0,0 @@
-package sarama
-
-import "time"
-
-type DescribeAclsResponse struct {
-	Version      int16
-	ThrottleTime time.Duration
-	Err          KError
-	ErrMsg       *string
-	ResourceAcls []*ResourceAcls
-}
-
-func (d *DescribeAclsResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(d.ThrottleTime / time.Millisecond))
-	pe.putInt16(int16(d.Err))
-
-	if err := pe.putNullableString(d.ErrMsg); err != nil {
-		return err
-	}
-
-	if err := pe.putArrayLength(len(d.ResourceAcls)); err != nil {
-		return err
-	}
-
-	for _, resourceAcl := range d.ResourceAcls {
-		if err := resourceAcl.encode(pe, d.Version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (d *DescribeAclsResponse) decode(pd packetDecoder, version int16) (err error) {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	d.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	d.Err = KError(kerr)
-
-	errmsg, err := pd.getString()
-	if err != nil {
-		return err
-	}
-	if errmsg != "" {
-		d.ErrMsg = &errmsg
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	d.ResourceAcls = make([]*ResourceAcls, n)
-
-	for i := 0; i < n; i++ {
-		d.ResourceAcls[i] = new(ResourceAcls)
-		if err := d.ResourceAcls[i].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (d *DescribeAclsResponse) key() int16 {
-	return 29
-}
-
-func (d *DescribeAclsResponse) version() int16 {
-	return int16(d.Version)
-}
-
-func (d *DescribeAclsResponse) requiredVersion() KafkaVersion {
-	switch d.Version {
-	case 1:
-		return V2_0_0_0
-	default:
-		return V0_11_0_0
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/acl_filter.go b/vendor/gopkg.in/Shopify/sarama.v1/acl_filter.go
deleted file mode 100644
index fad5558..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/acl_filter.go
+++ /dev/null
@@ -1,78 +0,0 @@
-package sarama
-
-type AclFilter struct {
-	Version                   int
-	ResourceType              AclResourceType
-	ResourceName              *string
-	ResourcePatternTypeFilter AclResourcePatternType
-	Principal                 *string
-	Host                      *string
-	Operation                 AclOperation
-	PermissionType            AclPermissionType
-}
-
-func (a *AclFilter) encode(pe packetEncoder) error {
-	pe.putInt8(int8(a.ResourceType))
-	if err := pe.putNullableString(a.ResourceName); err != nil {
-		return err
-	}
-
-	if a.Version == 1 {
-		pe.putInt8(int8(a.ResourcePatternTypeFilter))
-	}
-
-	if err := pe.putNullableString(a.Principal); err != nil {
-		return err
-	}
-	if err := pe.putNullableString(a.Host); err != nil {
-		return err
-	}
-	pe.putInt8(int8(a.Operation))
-	pe.putInt8(int8(a.PermissionType))
-
-	return nil
-}
-
-func (a *AclFilter) decode(pd packetDecoder, version int16) (err error) {
-	resourceType, err := pd.getInt8()
-	if err != nil {
-		return err
-	}
-	a.ResourceType = AclResourceType(resourceType)
-
-	if a.ResourceName, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	if a.Version == 1 {
-		pattern, err := pd.getInt8()
-
-		if err != nil {
-			return err
-		}
-
-		a.ResourcePatternTypeFilter = AclResourcePatternType(pattern)
-	}
-
-	if a.Principal, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	if a.Host, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	operation, err := pd.getInt8()
-	if err != nil {
-		return err
-	}
-	a.Operation = AclOperation(operation)
-
-	permissionType, err := pd.getInt8()
-	if err != nil {
-		return err
-	}
-	a.PermissionType = AclPermissionType(permissionType)
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/acl_types.go b/vendor/gopkg.in/Shopify/sarama.v1/acl_types.go
deleted file mode 100644
index 72b7985..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/acl_types.go
+++ /dev/null
@@ -1,54 +0,0 @@
-package sarama
-
-type AclOperation int
-
-// ref: https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/acl/AclOperation.java
-const (
-	AclOperationUnknown         AclOperation = 0
-	AclOperationAny             AclOperation = 1
-	AclOperationAll             AclOperation = 2
-	AclOperationRead            AclOperation = 3
-	AclOperationWrite           AclOperation = 4
-	AclOperationCreate          AclOperation = 5
-	AclOperationDelete          AclOperation = 6
-	AclOperationAlter           AclOperation = 7
-	AclOperationDescribe        AclOperation = 8
-	AclOperationClusterAction   AclOperation = 9
-	AclOperationDescribeConfigs AclOperation = 10
-	AclOperationAlterConfigs    AclOperation = 11
-	AclOperationIdempotentWrite AclOperation = 12
-)
-
-type AclPermissionType int
-
-// ref: https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/acl/AclPermissionType.java
-const (
-	AclPermissionUnknown AclPermissionType = 0
-	AclPermissionAny     AclPermissionType = 1
-	AclPermissionDeny    AclPermissionType = 2
-	AclPermissionAllow   AclPermissionType = 3
-)
-
-type AclResourceType int
-
-// ref: https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/resource/ResourceType.java
-const (
-	AclResourceUnknown         AclResourceType = 0
-	AclResourceAny             AclResourceType = 1
-	AclResourceTopic           AclResourceType = 2
-	AclResourceGroup           AclResourceType = 3
-	AclResourceCluster         AclResourceType = 4
-	AclResourceTransactionalID AclResourceType = 5
-)
-
-type AclResourcePatternType int
-
-// ref: https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/resource/PatternType.java
-
-const (
-	AclPatternUnknown AclResourcePatternType = iota
-	AclPatternAny
-	AclPatternMatch
-	AclPatternLiteral
-	AclPatternPrefixed
-)
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/add_offsets_to_txn_request.go b/vendor/gopkg.in/Shopify/sarama.v1/add_offsets_to_txn_request.go
deleted file mode 100644
index 6da166c..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/add_offsets_to_txn_request.go
+++ /dev/null
@@ -1,52 +0,0 @@
-package sarama
-
-type AddOffsetsToTxnRequest struct {
-	TransactionalID string
-	ProducerID      int64
-	ProducerEpoch   int16
-	GroupID         string
-}
-
-func (a *AddOffsetsToTxnRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(a.TransactionalID); err != nil {
-		return err
-	}
-
-	pe.putInt64(a.ProducerID)
-
-	pe.putInt16(a.ProducerEpoch)
-
-	if err := pe.putString(a.GroupID); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (a *AddOffsetsToTxnRequest) decode(pd packetDecoder, version int16) (err error) {
-	if a.TransactionalID, err = pd.getString(); err != nil {
-		return err
-	}
-	if a.ProducerID, err = pd.getInt64(); err != nil {
-		return err
-	}
-	if a.ProducerEpoch, err = pd.getInt16(); err != nil {
-		return err
-	}
-	if a.GroupID, err = pd.getString(); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (a *AddOffsetsToTxnRequest) key() int16 {
-	return 25
-}
-
-func (a *AddOffsetsToTxnRequest) version() int16 {
-	return 0
-}
-
-func (a *AddOffsetsToTxnRequest) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/add_offsets_to_txn_response.go b/vendor/gopkg.in/Shopify/sarama.v1/add_offsets_to_txn_response.go
deleted file mode 100644
index 3a46151..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/add_offsets_to_txn_response.go
+++ /dev/null
@@ -1,44 +0,0 @@
-package sarama
-
-import (
-	"time"
-)
-
-type AddOffsetsToTxnResponse struct {
-	ThrottleTime time.Duration
-	Err          KError
-}
-
-func (a *AddOffsetsToTxnResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(a.ThrottleTime / time.Millisecond))
-	pe.putInt16(int16(a.Err))
-	return nil
-}
-
-func (a *AddOffsetsToTxnResponse) decode(pd packetDecoder, version int16) (err error) {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	a.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	a.Err = KError(kerr)
-
-	return nil
-}
-
-func (a *AddOffsetsToTxnResponse) key() int16 {
-	return 25
-}
-
-func (a *AddOffsetsToTxnResponse) version() int16 {
-	return 0
-}
-
-func (a *AddOffsetsToTxnResponse) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/add_partitions_to_txn_request.go b/vendor/gopkg.in/Shopify/sarama.v1/add_partitions_to_txn_request.go
deleted file mode 100644
index a8a5922..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/add_partitions_to_txn_request.go
+++ /dev/null
@@ -1,76 +0,0 @@
-package sarama
-
-type AddPartitionsToTxnRequest struct {
-	TransactionalID string
-	ProducerID      int64
-	ProducerEpoch   int16
-	TopicPartitions map[string][]int32
-}
-
-func (a *AddPartitionsToTxnRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(a.TransactionalID); err != nil {
-		return err
-	}
-	pe.putInt64(a.ProducerID)
-	pe.putInt16(a.ProducerEpoch)
-
-	if err := pe.putArrayLength(len(a.TopicPartitions)); err != nil {
-		return err
-	}
-	for topic, partitions := range a.TopicPartitions {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := pe.putInt32Array(partitions); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (a *AddPartitionsToTxnRequest) decode(pd packetDecoder, version int16) (err error) {
-	if a.TransactionalID, err = pd.getString(); err != nil {
-		return err
-	}
-	if a.ProducerID, err = pd.getInt64(); err != nil {
-		return err
-	}
-	if a.ProducerEpoch, err = pd.getInt16(); err != nil {
-		return err
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	a.TopicPartitions = make(map[string][]int32)
-	for i := 0; i < n; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		partitions, err := pd.getInt32Array()
-		if err != nil {
-			return err
-		}
-
-		a.TopicPartitions[topic] = partitions
-	}
-
-	return nil
-}
-
-func (a *AddPartitionsToTxnRequest) key() int16 {
-	return 24
-}
-
-func (a *AddPartitionsToTxnRequest) version() int16 {
-	return 0
-}
-
-func (a *AddPartitionsToTxnRequest) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/add_partitions_to_txn_response.go b/vendor/gopkg.in/Shopify/sarama.v1/add_partitions_to_txn_response.go
deleted file mode 100644
index 581c556..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/add_partitions_to_txn_response.go
+++ /dev/null
@@ -1,108 +0,0 @@
-package sarama
-
-import (
-	"time"
-)
-
-type AddPartitionsToTxnResponse struct {
-	ThrottleTime time.Duration
-	Errors       map[string][]*PartitionError
-}
-
-func (a *AddPartitionsToTxnResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(a.ThrottleTime / time.Millisecond))
-	if err := pe.putArrayLength(len(a.Errors)); err != nil {
-		return err
-	}
-
-	for topic, e := range a.Errors {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := pe.putArrayLength(len(e)); err != nil {
-			return err
-		}
-		for _, partitionError := range e {
-			if err := partitionError.encode(pe); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-func (a *AddPartitionsToTxnResponse) decode(pd packetDecoder, version int16) (err error) {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	a.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	a.Errors = make(map[string][]*PartitionError)
-
-	for i := 0; i < n; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		m, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-
-		a.Errors[topic] = make([]*PartitionError, m)
-
-		for j := 0; j < m; j++ {
-			a.Errors[topic][j] = new(PartitionError)
-			if err := a.Errors[topic][j].decode(pd, version); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-func (a *AddPartitionsToTxnResponse) key() int16 {
-	return 24
-}
-
-func (a *AddPartitionsToTxnResponse) version() int16 {
-	return 0
-}
-
-func (a *AddPartitionsToTxnResponse) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
-
-type PartitionError struct {
-	Partition int32
-	Err       KError
-}
-
-func (p *PartitionError) encode(pe packetEncoder) error {
-	pe.putInt32(p.Partition)
-	pe.putInt16(int16(p.Err))
-	return nil
-}
-
-func (p *PartitionError) decode(pd packetDecoder, version int16) (err error) {
-	if p.Partition, err = pd.getInt32(); err != nil {
-		return err
-	}
-
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	p.Err = KError(kerr)
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/admin.go b/vendor/gopkg.in/Shopify/sarama.v1/admin.go
deleted file mode 100644
index 18b055a..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/admin.go
+++ /dev/null
@@ -1,614 +0,0 @@
-package sarama
-
-import (
-	"errors"
-	"math/rand"
-	"sync"
-)
-
-// ClusterAdmin is the administrative client for Kafka, which supports managing and inspecting topics,
-// brokers, configurations and ACLs. The minimum broker version required is 0.10.0.0.
-// Methods with stricter requirements will specify the minimum broker version required.
-// You MUST call Close() on a client to avoid leaks
-type ClusterAdmin interface {
-	// Creates a new topic. This operation is supported by brokers with version 0.10.1.0 or higher.
-	// It may take several seconds after CreateTopic returns success for all the brokers
-	// to become aware that the topic has been created. During this time, listTopics
-	// may not return information about the new topic.The validateOnly option is supported from version 0.10.2.0.
-	CreateTopic(topic string, detail *TopicDetail, validateOnly bool) error
-
-	// List the topics available in the cluster with the default options.
-	ListTopics() (map[string]TopicDetail, error)
-
-	// Describe some topics in the cluster
-	DescribeTopics(topics []string) (metadata []*TopicMetadata, err error)
-
-	// Delete a topic. It may take several seconds after the DeleteTopic to returns success
-	// and for all the brokers to become aware that the topics are gone.
-	// During this time, listTopics  may continue to return information about the deleted topic.
-	// If delete.topic.enable is false on the brokers, deleteTopic will mark
-	// the topic for deletion, but not actually delete them.
-	// This operation is supported by brokers with version 0.10.1.0 or higher.
-	DeleteTopic(topic string) error
-
-	// Increase the number of partitions of the topics  according to the corresponding values.
-	// If partitions are increased for a topic that has a key, the partition logic or ordering of
-	// the messages will be affected. It may take several seconds after this method returns
-	// success for all the brokers to become aware that the partitions have been created.
-	// During this time, ClusterAdmin#describeTopics may not return information about the
-	// new partitions. This operation is supported by brokers with version 1.0.0 or higher.
-	CreatePartitions(topic string, count int32, assignment [][]int32, validateOnly bool) error
-
-	// Delete records whose offset is smaller than the given offset of the corresponding partition.
-	// This operation is supported by brokers with version 0.11.0.0 or higher.
-	DeleteRecords(topic string, partitionOffsets map[int32]int64) error
-
-	// Get the configuration for the specified resources.
-	// The returned configuration includes default values and the Default is true
-	// can be used to distinguish them from user supplied values.
-	// Config entries where ReadOnly is true cannot be updated.
-	// The value of config entries where Sensitive is true is always nil so
-	// sensitive information is not disclosed.
-	// This operation is supported by brokers with version 0.11.0.0 or higher.
-	DescribeConfig(resource ConfigResource) ([]ConfigEntry, error)
-
-	// Update the configuration for the specified resources with the default options.
-	// This operation is supported by brokers with version 0.11.0.0 or higher.
-	// The resources with their configs (topic is the only resource type with configs
-	// that can be updated currently Updates are not transactional so they may succeed
-	// for some resources while fail for others. The configs for a particular resource are updated automatically.
-	AlterConfig(resourceType ConfigResourceType, name string, entries map[string]*string, validateOnly bool) error
-
-	// Creates access control lists (ACLs) which are bound to specific resources.
-	// This operation is not transactional so it may succeed for some ACLs while fail for others.
-	// If you attempt to add an ACL that duplicates an existing ACL, no error will be raised, but
-	// no changes will be made. This operation is supported by brokers with version 0.11.0.0 or higher.
-	CreateACL(resource Resource, acl Acl) error
-
-	// Lists access control lists (ACLs) according to the supplied filter.
-	// it may take some time for changes made by createAcls or deleteAcls to be reflected in the output of ListAcls
-	// This operation is supported by brokers with version 0.11.0.0 or higher.
-	ListAcls(filter AclFilter) ([]ResourceAcls, error)
-
-	// Deletes access control lists (ACLs) according to the supplied filters.
-	// This operation is not transactional so it may succeed for some ACLs while fail for others.
-	// This operation is supported by brokers with version 0.11.0.0 or higher.
-	DeleteACL(filter AclFilter, validateOnly bool) ([]MatchingAcl, error)
-
-	// List the consumer groups available in the cluster.
-	ListConsumerGroups() (map[string]string, error)
-
-	// Describe the given consumer group
-	DescribeConsumerGroups(groups []string) ([]*GroupDescription, error)
-
-	// List the consumer group offsets available in the cluster.
-	ListConsumerGroupOffsets(group string, topicPartitions map[string][]int32) (*OffsetFetchResponse, error)
-
-	// Get information about the nodes in the cluster
-	DescribeCluster() (brokers []*Broker, controllerID int32, err error)
-
-	// Close shuts down the admin and closes underlying client.
-	Close() error
-}
-
-type clusterAdmin struct {
-	client Client
-	conf   *Config
-}
-
-// NewClusterAdmin creates a new ClusterAdmin using the given broker addresses and configuration.
-func NewClusterAdmin(addrs []string, conf *Config) (ClusterAdmin, error) {
-	client, err := NewClient(addrs, conf)
-	if err != nil {
-		return nil, err
-	}
-
-	//make sure we can retrieve the controller
-	_, err = client.Controller()
-	if err != nil {
-		return nil, err
-	}
-
-	ca := &clusterAdmin{
-		client: client,
-		conf:   client.Config(),
-	}
-	return ca, nil
-}
-
-func (ca *clusterAdmin) Close() error {
-	return ca.client.Close()
-}
-
-func (ca *clusterAdmin) Controller() (*Broker, error) {
-	return ca.client.Controller()
-}
-
-func (ca *clusterAdmin) CreateTopic(topic string, detail *TopicDetail, validateOnly bool) error {
-
-	if topic == "" {
-		return ErrInvalidTopic
-	}
-
-	if detail == nil {
-		return errors.New("You must specify topic details")
-	}
-
-	topicDetails := make(map[string]*TopicDetail)
-	topicDetails[topic] = detail
-
-	request := &CreateTopicsRequest{
-		TopicDetails: topicDetails,
-		ValidateOnly: validateOnly,
-		Timeout:      ca.conf.Admin.Timeout,
-	}
-
-	if ca.conf.Version.IsAtLeast(V0_11_0_0) {
-		request.Version = 1
-	}
-	if ca.conf.Version.IsAtLeast(V1_0_0_0) {
-		request.Version = 2
-	}
-
-	b, err := ca.Controller()
-	if err != nil {
-		return err
-	}
-
-	rsp, err := b.CreateTopics(request)
-	if err != nil {
-		return err
-	}
-
-	topicErr, ok := rsp.TopicErrors[topic]
-	if !ok {
-		return ErrIncompleteResponse
-	}
-
-	if topicErr.Err != ErrNoError {
-		return topicErr.Err
-	}
-
-	return nil
-}
-
-func (ca *clusterAdmin) DescribeTopics(topics []string) (metadata []*TopicMetadata, err error) {
-	controller, err := ca.Controller()
-	if err != nil {
-		return nil, err
-	}
-
-	request := &MetadataRequest{
-		Topics:                 topics,
-		AllowAutoTopicCreation: false,
-	}
-
-	if ca.conf.Version.IsAtLeast(V0_11_0_0) {
-		request.Version = 4
-	}
-
-	response, err := controller.GetMetadata(request)
-	if err != nil {
-		return nil, err
-	}
-	return response.Topics, nil
-}
-
-func (ca *clusterAdmin) DescribeCluster() (brokers []*Broker, controllerID int32, err error) {
-	controller, err := ca.Controller()
-	if err != nil {
-		return nil, int32(0), err
-	}
-
-	request := &MetadataRequest{
-		Topics: []string{},
-	}
-
-	response, err := controller.GetMetadata(request)
-	if err != nil {
-		return nil, int32(0), err
-	}
-
-	return response.Brokers, response.ControllerID, nil
-}
-
-func (ca *clusterAdmin) findAnyBroker() (*Broker, error) {
-	brokers := ca.client.Brokers()
-	if len(brokers) > 0 {
-		index := rand.Intn(len(brokers))
-		return brokers[index], nil
-	}
-	return nil, errors.New("no available broker")
-}
-
-func (ca *clusterAdmin) ListTopics() (map[string]TopicDetail, error) {
-	// In order to build TopicDetails we need to first get the list of all
-	// topics using a MetadataRequest and then get their configs using a
-	// DescribeConfigsRequest request. To avoid sending many requests to the
-	// broker, we use a single DescribeConfigsRequest.
-
-	// Send the all-topic MetadataRequest
-	b, err := ca.findAnyBroker()
-	if err != nil {
-		return nil, err
-	}
-	_ = b.Open(ca.client.Config())
-
-	metadataReq := &MetadataRequest{}
-	metadataResp, err := b.GetMetadata(metadataReq)
-	if err != nil {
-		return nil, err
-	}
-
-	topicsDetailsMap := make(map[string]TopicDetail)
-
-	var describeConfigsResources []*ConfigResource
-
-	for _, topic := range metadataResp.Topics {
-		topicDetails := TopicDetail{
-			NumPartitions: int32(len(topic.Partitions)),
-		}
-		if len(topic.Partitions) > 0 {
-			topicDetails.ReplicaAssignment = map[int32][]int32{}
-			for _, partition := range topic.Partitions {
-				topicDetails.ReplicaAssignment[partition.ID] = partition.Replicas
-			}
-			topicDetails.ReplicationFactor = int16(len(topic.Partitions[0].Replicas))
-		}
-		topicsDetailsMap[topic.Name] = topicDetails
-
-		// we populate the resources we want to describe from the MetadataResponse
-		topicResource := ConfigResource{
-			Type: TopicResource,
-			Name: topic.Name,
-		}
-		describeConfigsResources = append(describeConfigsResources, &topicResource)
-	}
-
-	// Send the DescribeConfigsRequest
-	describeConfigsReq := &DescribeConfigsRequest{
-		Resources: describeConfigsResources,
-	}
-	describeConfigsResp, err := b.DescribeConfigs(describeConfigsReq)
-	if err != nil {
-		return nil, err
-	}
-
-	for _, resource := range describeConfigsResp.Resources {
-		topicDetails := topicsDetailsMap[resource.Name]
-		topicDetails.ConfigEntries = make(map[string]*string)
-
-		for _, entry := range resource.Configs {
-			// only include non-default non-sensitive config
-			// (don't actually think topic config will ever be sensitive)
-			if entry.Default || entry.Sensitive {
-				continue
-			}
-			topicDetails.ConfigEntries[entry.Name] = &entry.Value
-		}
-
-		topicsDetailsMap[resource.Name] = topicDetails
-	}
-
-	return topicsDetailsMap, nil
-}
-
-func (ca *clusterAdmin) DeleteTopic(topic string) error {
-
-	if topic == "" {
-		return ErrInvalidTopic
-	}
-
-	request := &DeleteTopicsRequest{
-		Topics:  []string{topic},
-		Timeout: ca.conf.Admin.Timeout,
-	}
-
-	if ca.conf.Version.IsAtLeast(V0_11_0_0) {
-		request.Version = 1
-	}
-
-	b, err := ca.Controller()
-	if err != nil {
-		return err
-	}
-
-	rsp, err := b.DeleteTopics(request)
-	if err != nil {
-		return err
-	}
-
-	topicErr, ok := rsp.TopicErrorCodes[topic]
-	if !ok {
-		return ErrIncompleteResponse
-	}
-
-	if topicErr != ErrNoError {
-		return topicErr
-	}
-	return nil
-}
-
-func (ca *clusterAdmin) CreatePartitions(topic string, count int32, assignment [][]int32, validateOnly bool) error {
-	if topic == "" {
-		return ErrInvalidTopic
-	}
-
-	topicPartitions := make(map[string]*TopicPartition)
-	topicPartitions[topic] = &TopicPartition{Count: count, Assignment: assignment}
-
-	request := &CreatePartitionsRequest{
-		TopicPartitions: topicPartitions,
-		Timeout:         ca.conf.Admin.Timeout,
-	}
-
-	b, err := ca.Controller()
-	if err != nil {
-		return err
-	}
-
-	rsp, err := b.CreatePartitions(request)
-	if err != nil {
-		return err
-	}
-
-	topicErr, ok := rsp.TopicPartitionErrors[topic]
-	if !ok {
-		return ErrIncompleteResponse
-	}
-
-	if topicErr.Err != ErrNoError {
-		return topicErr.Err
-	}
-
-	return nil
-}
-
-func (ca *clusterAdmin) DeleteRecords(topic string, partitionOffsets map[int32]int64) error {
-
-	if topic == "" {
-		return ErrInvalidTopic
-	}
-
-	topics := make(map[string]*DeleteRecordsRequestTopic)
-	topics[topic] = &DeleteRecordsRequestTopic{PartitionOffsets: partitionOffsets}
-	request := &DeleteRecordsRequest{
-		Topics:  topics,
-		Timeout: ca.conf.Admin.Timeout,
-	}
-
-	b, err := ca.Controller()
-	if err != nil {
-		return err
-	}
-
-	rsp, err := b.DeleteRecords(request)
-	if err != nil {
-		return err
-	}
-
-	_, ok := rsp.Topics[topic]
-	if !ok {
-		return ErrIncompleteResponse
-	}
-
-	//todo since we are dealing with couple of partitions it would be good if we return slice of errors
-	//for each partition instead of one error
-	return nil
-}
-
-func (ca *clusterAdmin) DescribeConfig(resource ConfigResource) ([]ConfigEntry, error) {
-
-	var entries []ConfigEntry
-	var resources []*ConfigResource
-	resources = append(resources, &resource)
-
-	request := &DescribeConfigsRequest{
-		Resources: resources,
-	}
-
-	b, err := ca.Controller()
-	if err != nil {
-		return nil, err
-	}
-
-	rsp, err := b.DescribeConfigs(request)
-	if err != nil {
-		return nil, err
-	}
-
-	for _, rspResource := range rsp.Resources {
-		if rspResource.Name == resource.Name {
-			if rspResource.ErrorMsg != "" {
-				return nil, errors.New(rspResource.ErrorMsg)
-			}
-			for _, cfgEntry := range rspResource.Configs {
-				entries = append(entries, *cfgEntry)
-			}
-		}
-	}
-	return entries, nil
-}
-
-func (ca *clusterAdmin) AlterConfig(resourceType ConfigResourceType, name string, entries map[string]*string, validateOnly bool) error {
-
-	var resources []*AlterConfigsResource
-	resources = append(resources, &AlterConfigsResource{
-		Type:          resourceType,
-		Name:          name,
-		ConfigEntries: entries,
-	})
-
-	request := &AlterConfigsRequest{
-		Resources:    resources,
-		ValidateOnly: validateOnly,
-	}
-
-	b, err := ca.Controller()
-	if err != nil {
-		return err
-	}
-
-	rsp, err := b.AlterConfigs(request)
-	if err != nil {
-		return err
-	}
-
-	for _, rspResource := range rsp.Resources {
-		if rspResource.Name == name {
-			if rspResource.ErrorMsg != "" {
-				return errors.New(rspResource.ErrorMsg)
-			}
-		}
-	}
-	return nil
-}
-
-func (ca *clusterAdmin) CreateACL(resource Resource, acl Acl) error {
-	var acls []*AclCreation
-	acls = append(acls, &AclCreation{resource, acl})
-	request := &CreateAclsRequest{AclCreations: acls}
-
-	b, err := ca.Controller()
-	if err != nil {
-		return err
-	}
-
-	_, err = b.CreateAcls(request)
-	return err
-}
-
-func (ca *clusterAdmin) ListAcls(filter AclFilter) ([]ResourceAcls, error) {
-
-	request := &DescribeAclsRequest{AclFilter: filter}
-
-	b, err := ca.Controller()
-	if err != nil {
-		return nil, err
-	}
-
-	rsp, err := b.DescribeAcls(request)
-	if err != nil {
-		return nil, err
-	}
-
-	var lAcls []ResourceAcls
-	for _, rAcl := range rsp.ResourceAcls {
-		lAcls = append(lAcls, *rAcl)
-	}
-	return lAcls, nil
-}
-
-func (ca *clusterAdmin) DeleteACL(filter AclFilter, validateOnly bool) ([]MatchingAcl, error) {
-	var filters []*AclFilter
-	filters = append(filters, &filter)
-	request := &DeleteAclsRequest{Filters: filters}
-
-	b, err := ca.Controller()
-	if err != nil {
-		return nil, err
-	}
-
-	rsp, err := b.DeleteAcls(request)
-	if err != nil {
-		return nil, err
-	}
-
-	var mAcls []MatchingAcl
-	for _, fr := range rsp.FilterResponses {
-		for _, mACL := range fr.MatchingAcls {
-			mAcls = append(mAcls, *mACL)
-		}
-
-	}
-	return mAcls, nil
-}
-
-func (ca *clusterAdmin) DescribeConsumerGroups(groups []string) (result []*GroupDescription, err error) {
-	groupsPerBroker := make(map[*Broker][]string)
-
-	for _, group := range groups {
-		controller, err := ca.client.Coordinator(group)
-		if err != nil {
-			return nil, err
-		}
-		groupsPerBroker[controller] = append(groupsPerBroker[controller], group)
-
-	}
-
-	for broker, brokerGroups := range groupsPerBroker {
-		response, err := broker.DescribeGroups(&DescribeGroupsRequest{
-			Groups: brokerGroups,
-		})
-		if err != nil {
-			return nil, err
-		}
-
-		result = append(result, response.Groups...)
-	}
-	return result, nil
-}
-
-func (ca *clusterAdmin) ListConsumerGroups() (allGroups map[string]string, err error) {
-	allGroups = make(map[string]string)
-
-	// Query brokers in parallel, since we have to query *all* brokers
-	brokers := ca.client.Brokers()
-	groupMaps := make(chan map[string]string, len(brokers))
-	errors := make(chan error, len(brokers))
-	wg := sync.WaitGroup{}
-
-	for _, b := range brokers {
-		wg.Add(1)
-		go func(b *Broker, conf *Config) {
-			defer wg.Done()
-			_ = b.Open(conf) // Ensure that broker is opened
-
-			response, err := b.ListGroups(&ListGroupsRequest{})
-			if err != nil {
-				errors <- err
-				return
-			}
-
-			groups := make(map[string]string)
-			for group, typ := range response.Groups {
-				groups[group] = typ
-			}
-
-			groupMaps <- groups
-
-		}(b, ca.conf)
-	}
-
-	wg.Wait()
-	close(groupMaps)
-	close(errors)
-
-	for groupMap := range groupMaps {
-		for group, protocolType := range groupMap {
-			allGroups[group] = protocolType
-		}
-	}
-
-	// Intentionally return only the first error for simplicity
-	err = <-errors
-	return
-}
-
-func (ca *clusterAdmin) ListConsumerGroupOffsets(group string, topicPartitions map[string][]int32) (*OffsetFetchResponse, error) {
-	coordinator, err := ca.client.Coordinator(group)
-	if err != nil {
-		return nil, err
-	}
-
-	request := &OffsetFetchRequest{
-		ConsumerGroup: group,
-		partitions:    topicPartitions,
-	}
-
-	if ca.conf.Version.IsAtLeast(V0_8_2_2) {
-		request.Version = 1
-	}
-
-	return coordinator.FetchOffset(request)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/alter_configs_request.go b/vendor/gopkg.in/Shopify/sarama.v1/alter_configs_request.go
deleted file mode 100644
index 48c44ea..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/alter_configs_request.go
+++ /dev/null
@@ -1,120 +0,0 @@
-package sarama
-
-type AlterConfigsRequest struct {
-	Resources    []*AlterConfigsResource
-	ValidateOnly bool
-}
-
-type AlterConfigsResource struct {
-	Type          ConfigResourceType
-	Name          string
-	ConfigEntries map[string]*string
-}
-
-func (acr *AlterConfigsRequest) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(acr.Resources)); err != nil {
-		return err
-	}
-
-	for _, r := range acr.Resources {
-		if err := r.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	pe.putBool(acr.ValidateOnly)
-	return nil
-}
-
-func (acr *AlterConfigsRequest) decode(pd packetDecoder, version int16) error {
-	resourceCount, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	acr.Resources = make([]*AlterConfigsResource, resourceCount)
-	for i := range acr.Resources {
-		r := &AlterConfigsResource{}
-		err = r.decode(pd, version)
-		if err != nil {
-			return err
-		}
-		acr.Resources[i] = r
-	}
-
-	validateOnly, err := pd.getBool()
-	if err != nil {
-		return err
-	}
-
-	acr.ValidateOnly = validateOnly
-
-	return nil
-}
-
-func (ac *AlterConfigsResource) encode(pe packetEncoder) error {
-	pe.putInt8(int8(ac.Type))
-
-	if err := pe.putString(ac.Name); err != nil {
-		return err
-	}
-
-	if err := pe.putArrayLength(len(ac.ConfigEntries)); err != nil {
-		return err
-	}
-	for configKey, configValue := range ac.ConfigEntries {
-		if err := pe.putString(configKey); err != nil {
-			return err
-		}
-		if err := pe.putNullableString(configValue); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (ac *AlterConfigsResource) decode(pd packetDecoder, version int16) error {
-	t, err := pd.getInt8()
-	if err != nil {
-		return err
-	}
-	ac.Type = ConfigResourceType(t)
-
-	name, err := pd.getString()
-	if err != nil {
-		return err
-	}
-	ac.Name = name
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	if n > 0 {
-		ac.ConfigEntries = make(map[string]*string, n)
-		for i := 0; i < n; i++ {
-			configKey, err := pd.getString()
-			if err != nil {
-				return err
-			}
-			if ac.ConfigEntries[configKey], err = pd.getNullableString(); err != nil {
-				return err
-			}
-		}
-	}
-	return err
-}
-
-func (acr *AlterConfigsRequest) key() int16 {
-	return 33
-}
-
-func (acr *AlterConfigsRequest) version() int16 {
-	return 0
-}
-
-func (acr *AlterConfigsRequest) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/alter_configs_response.go b/vendor/gopkg.in/Shopify/sarama.v1/alter_configs_response.go
deleted file mode 100644
index 29b09e1..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/alter_configs_response.go
+++ /dev/null
@@ -1,95 +0,0 @@
-package sarama
-
-import "time"
-
-type AlterConfigsResponse struct {
-	ThrottleTime time.Duration
-	Resources    []*AlterConfigsResourceResponse
-}
-
-type AlterConfigsResourceResponse struct {
-	ErrorCode int16
-	ErrorMsg  string
-	Type      ConfigResourceType
-	Name      string
-}
-
-func (ct *AlterConfigsResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(ct.ThrottleTime / time.Millisecond))
-
-	if err := pe.putArrayLength(len(ct.Resources)); err != nil {
-		return err
-	}
-
-	for i := range ct.Resources {
-		pe.putInt16(ct.Resources[i].ErrorCode)
-		err := pe.putString(ct.Resources[i].ErrorMsg)
-		if err != nil {
-			return nil
-		}
-		pe.putInt8(int8(ct.Resources[i].Type))
-		err = pe.putString(ct.Resources[i].Name)
-		if err != nil {
-			return nil
-		}
-	}
-
-	return nil
-}
-
-func (acr *AlterConfigsResponse) decode(pd packetDecoder, version int16) error {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	acr.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	responseCount, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	acr.Resources = make([]*AlterConfigsResourceResponse, responseCount)
-
-	for i := range acr.Resources {
-		acr.Resources[i] = new(AlterConfigsResourceResponse)
-
-		errCode, err := pd.getInt16()
-		if err != nil {
-			return err
-		}
-		acr.Resources[i].ErrorCode = errCode
-
-		e, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		acr.Resources[i].ErrorMsg = e
-
-		t, err := pd.getInt8()
-		if err != nil {
-			return err
-		}
-		acr.Resources[i].Type = ConfigResourceType(t)
-
-		name, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		acr.Resources[i].Name = name
-	}
-
-	return nil
-}
-
-func (r *AlterConfigsResponse) key() int16 {
-	return 32
-}
-
-func (r *AlterConfigsResponse) version() int16 {
-	return 0
-}
-
-func (r *AlterConfigsResponse) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/api_versions_request.go b/vendor/gopkg.in/Shopify/sarama.v1/api_versions_request.go
deleted file mode 100644
index ab65f01..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/api_versions_request.go
+++ /dev/null
@@ -1,24 +0,0 @@
-package sarama
-
-type ApiVersionsRequest struct {
-}
-
-func (r *ApiVersionsRequest) encode(pe packetEncoder) error {
-	return nil
-}
-
-func (r *ApiVersionsRequest) decode(pd packetDecoder, version int16) (err error) {
-	return nil
-}
-
-func (r *ApiVersionsRequest) key() int16 {
-	return 18
-}
-
-func (r *ApiVersionsRequest) version() int16 {
-	return 0
-}
-
-func (r *ApiVersionsRequest) requiredVersion() KafkaVersion {
-	return V0_10_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/api_versions_response.go b/vendor/gopkg.in/Shopify/sarama.v1/api_versions_response.go
deleted file mode 100644
index 23bc326..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/api_versions_response.go
+++ /dev/null
@@ -1,87 +0,0 @@
-package sarama
-
-type ApiVersionsResponseBlock struct {
-	ApiKey     int16
-	MinVersion int16
-	MaxVersion int16
-}
-
-func (b *ApiVersionsResponseBlock) encode(pe packetEncoder) error {
-	pe.putInt16(b.ApiKey)
-	pe.putInt16(b.MinVersion)
-	pe.putInt16(b.MaxVersion)
-	return nil
-}
-
-func (b *ApiVersionsResponseBlock) decode(pd packetDecoder) error {
-	var err error
-
-	if b.ApiKey, err = pd.getInt16(); err != nil {
-		return err
-	}
-
-	if b.MinVersion, err = pd.getInt16(); err != nil {
-		return err
-	}
-
-	if b.MaxVersion, err = pd.getInt16(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-type ApiVersionsResponse struct {
-	Err         KError
-	ApiVersions []*ApiVersionsResponseBlock
-}
-
-func (r *ApiVersionsResponse) encode(pe packetEncoder) error {
-	pe.putInt16(int16(r.Err))
-	if err := pe.putArrayLength(len(r.ApiVersions)); err != nil {
-		return err
-	}
-	for _, apiVersion := range r.ApiVersions {
-		if err := apiVersion.encode(pe); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (r *ApiVersionsResponse) decode(pd packetDecoder, version int16) error {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-
-	r.Err = KError(kerr)
-
-	numBlocks, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.ApiVersions = make([]*ApiVersionsResponseBlock, numBlocks)
-	for i := 0; i < numBlocks; i++ {
-		block := new(ApiVersionsResponseBlock)
-		if err := block.decode(pd); err != nil {
-			return err
-		}
-		r.ApiVersions[i] = block
-	}
-
-	return nil
-}
-
-func (r *ApiVersionsResponse) key() int16 {
-	return 18
-}
-
-func (r *ApiVersionsResponse) version() int16 {
-	return 0
-}
-
-func (r *ApiVersionsResponse) requiredVersion() KafkaVersion {
-	return V0_10_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/async_producer.go b/vendor/gopkg.in/Shopify/sarama.v1/async_producer.go
deleted file mode 100644
index 5174a35..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/async_producer.go
+++ /dev/null
@@ -1,1099 +0,0 @@
-package sarama
-
-import (
-	"encoding/binary"
-	"fmt"
-	"sync"
-	"time"
-
-	"github.com/eapache/go-resiliency/breaker"
-	"github.com/eapache/queue"
-)
-
-// AsyncProducer publishes Kafka messages using a non-blocking API. It routes messages
-// to the correct broker for the provided topic-partition, refreshing metadata as appropriate,
-// and parses responses for errors. You must read from the Errors() channel or the
-// producer will deadlock. You must call Close() or AsyncClose() on a producer to avoid
-// leaks: it will not be garbage-collected automatically when it passes out of
-// scope.
-type AsyncProducer interface {
-
-	// AsyncClose triggers a shutdown of the producer. The shutdown has completed
-	// when both the Errors and Successes channels have been closed. When calling
-	// AsyncClose, you *must* continue to read from those channels in order to
-	// drain the results of any messages in flight.
-	AsyncClose()
-
-	// Close shuts down the producer and waits for any buffered messages to be
-	// flushed. You must call this function before a producer object passes out of
-	// scope, as it may otherwise leak memory. You must call this before calling
-	// Close on the underlying client.
-	Close() error
-
-	// Input is the input channel for the user to write messages to that they
-	// wish to send.
-	Input() chan<- *ProducerMessage
-
-	// Successes is the success output channel back to the user when Return.Successes is
-	// enabled. If Return.Successes is true, you MUST read from this channel or the
-	// Producer will deadlock. It is suggested that you send and read messages
-	// together in a single select statement.
-	Successes() <-chan *ProducerMessage
-
-	// Errors is the error output channel back to the user. You MUST read from this
-	// channel or the Producer will deadlock when the channel is full. Alternatively,
-	// you can set Producer.Return.Errors in your config to false, which prevents
-	// errors to be returned.
-	Errors() <-chan *ProducerError
-}
-
-// transactionManager keeps the state necessary to ensure idempotent production
-type transactionManager struct {
-	producerID      int64
-	producerEpoch   int16
-	sequenceNumbers map[string]int32
-	mutex           sync.Mutex
-}
-
-const (
-	noProducerID    = -1
-	noProducerEpoch = -1
-)
-
-func (t *transactionManager) getAndIncrementSequenceNumber(topic string, partition int32) int32 {
-	key := fmt.Sprintf("%s-%d", topic, partition)
-	t.mutex.Lock()
-	defer t.mutex.Unlock()
-	sequence := t.sequenceNumbers[key]
-	t.sequenceNumbers[key] = sequence + 1
-	return sequence
-}
-
-func newTransactionManager(conf *Config, client Client) (*transactionManager, error) {
-	txnmgr := &transactionManager{
-		producerID:    noProducerID,
-		producerEpoch: noProducerEpoch,
-	}
-
-	if conf.Producer.Idempotent {
-		initProducerIDResponse, err := client.InitProducerID()
-		if err != nil {
-			return nil, err
-		}
-		txnmgr.producerID = initProducerIDResponse.ProducerID
-		txnmgr.producerEpoch = initProducerIDResponse.ProducerEpoch
-		txnmgr.sequenceNumbers = make(map[string]int32)
-		txnmgr.mutex = sync.Mutex{}
-
-		Logger.Printf("Obtained a ProducerId: %d and ProducerEpoch: %d\n", txnmgr.producerID, txnmgr.producerEpoch)
-	}
-
-	return txnmgr, nil
-}
-
-type asyncProducer struct {
-	client    Client
-	conf      *Config
-	ownClient bool
-
-	errors                    chan *ProducerError
-	input, successes, retries chan *ProducerMessage
-	inFlight                  sync.WaitGroup
-
-	brokers    map[*Broker]*brokerProducer
-	brokerRefs map[*brokerProducer]int
-	brokerLock sync.Mutex
-
-	txnmgr *transactionManager
-}
-
-// NewAsyncProducer creates a new AsyncProducer using the given broker addresses and configuration.
-func NewAsyncProducer(addrs []string, conf *Config) (AsyncProducer, error) {
-	client, err := NewClient(addrs, conf)
-	if err != nil {
-		return nil, err
-	}
-
-	p, err := NewAsyncProducerFromClient(client)
-	if err != nil {
-		return nil, err
-	}
-	p.(*asyncProducer).ownClient = true
-	return p, nil
-}
-
-// NewAsyncProducerFromClient creates a new Producer using the given client. It is still
-// necessary to call Close() on the underlying client when shutting down this producer.
-func NewAsyncProducerFromClient(client Client) (AsyncProducer, error) {
-	// Check that we are not dealing with a closed Client before processing any other arguments
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	txnmgr, err := newTransactionManager(client.Config(), client)
-	if err != nil {
-		return nil, err
-	}
-
-	p := &asyncProducer{
-		client:     client,
-		conf:       client.Config(),
-		errors:     make(chan *ProducerError),
-		input:      make(chan *ProducerMessage),
-		successes:  make(chan *ProducerMessage),
-		retries:    make(chan *ProducerMessage),
-		brokers:    make(map[*Broker]*brokerProducer),
-		brokerRefs: make(map[*brokerProducer]int),
-		txnmgr:     txnmgr,
-	}
-
-	// launch our singleton dispatchers
-	go withRecover(p.dispatcher)
-	go withRecover(p.retryHandler)
-
-	return p, nil
-}
-
-type flagSet int8
-
-const (
-	syn      flagSet = 1 << iota // first message from partitionProducer to brokerProducer
-	fin                          // final message from partitionProducer to brokerProducer and back
-	shutdown                     // start the shutdown process
-)
-
-// ProducerMessage is the collection of elements passed to the Producer in order to send a message.
-type ProducerMessage struct {
-	Topic string // The Kafka topic for this message.
-	// The partitioning key for this message. Pre-existing Encoders include
-	// StringEncoder and ByteEncoder.
-	Key Encoder
-	// The actual message to store in Kafka. Pre-existing Encoders include
-	// StringEncoder and ByteEncoder.
-	Value Encoder
-
-	// The headers are key-value pairs that are transparently passed
-	// by Kafka between producers and consumers.
-	Headers []RecordHeader
-
-	// This field is used to hold arbitrary data you wish to include so it
-	// will be available when receiving on the Successes and Errors channels.
-	// Sarama completely ignores this field and is only to be used for
-	// pass-through data.
-	Metadata interface{}
-
-	// Below this point are filled in by the producer as the message is processed
-
-	// Offset is the offset of the message stored on the broker. This is only
-	// guaranteed to be defined if the message was successfully delivered and
-	// RequiredAcks is not NoResponse.
-	Offset int64
-	// Partition is the partition that the message was sent to. This is only
-	// guaranteed to be defined if the message was successfully delivered.
-	Partition int32
-	// Timestamp is the timestamp assigned to the message by the broker. This
-	// is only guaranteed to be defined if the message was successfully
-	// delivered, RequiredAcks is not NoResponse, and the Kafka broker is at
-	// least version 0.10.0.
-	Timestamp time.Time
-
-	retries        int
-	flags          flagSet
-	expectation    chan *ProducerError
-	sequenceNumber int32
-}
-
-const producerMessageOverhead = 26 // the metadata overhead of CRC, flags, etc.
-
-func (m *ProducerMessage) byteSize(version int) int {
-	var size int
-	if version >= 2 {
-		size = maximumRecordOverhead
-		for _, h := range m.Headers {
-			size += len(h.Key) + len(h.Value) + 2*binary.MaxVarintLen32
-		}
-	} else {
-		size = producerMessageOverhead
-	}
-	if m.Key != nil {
-		size += m.Key.Length()
-	}
-	if m.Value != nil {
-		size += m.Value.Length()
-	}
-	return size
-}
-
-func (m *ProducerMessage) clear() {
-	m.flags = 0
-	m.retries = 0
-}
-
-// ProducerError is the type of error generated when the producer fails to deliver a message.
-// It contains the original ProducerMessage as well as the actual error value.
-type ProducerError struct {
-	Msg *ProducerMessage
-	Err error
-}
-
-func (pe ProducerError) Error() string {
-	return fmt.Sprintf("kafka: Failed to produce message to topic %s: %s", pe.Msg.Topic, pe.Err)
-}
-
-// ProducerErrors is a type that wraps a batch of "ProducerError"s and implements the Error interface.
-// It can be returned from the Producer's Close method to avoid the need to manually drain the Errors channel
-// when closing a producer.
-type ProducerErrors []*ProducerError
-
-func (pe ProducerErrors) Error() string {
-	return fmt.Sprintf("kafka: Failed to deliver %d messages.", len(pe))
-}
-
-func (p *asyncProducer) Errors() <-chan *ProducerError {
-	return p.errors
-}
-
-func (p *asyncProducer) Successes() <-chan *ProducerMessage {
-	return p.successes
-}
-
-func (p *asyncProducer) Input() chan<- *ProducerMessage {
-	return p.input
-}
-
-func (p *asyncProducer) Close() error {
-	p.AsyncClose()
-
-	if p.conf.Producer.Return.Successes {
-		go withRecover(func() {
-			for range p.successes {
-			}
-		})
-	}
-
-	var errors ProducerErrors
-	if p.conf.Producer.Return.Errors {
-		for event := range p.errors {
-			errors = append(errors, event)
-		}
-	} else {
-		<-p.errors
-	}
-
-	if len(errors) > 0 {
-		return errors
-	}
-	return nil
-}
-
-func (p *asyncProducer) AsyncClose() {
-	go withRecover(p.shutdown)
-}
-
-// singleton
-// dispatches messages by topic
-func (p *asyncProducer) dispatcher() {
-	handlers := make(map[string]chan<- *ProducerMessage)
-	shuttingDown := false
-
-	for msg := range p.input {
-		if msg == nil {
-			Logger.Println("Something tried to send a nil message, it was ignored.")
-			continue
-		}
-
-		if msg.flags&shutdown != 0 {
-			shuttingDown = true
-			p.inFlight.Done()
-			continue
-		} else if msg.retries == 0 {
-			if shuttingDown {
-				// we can't just call returnError here because that decrements the wait group,
-				// which hasn't been incremented yet for this message, and shouldn't be
-				pErr := &ProducerError{Msg: msg, Err: ErrShuttingDown}
-				if p.conf.Producer.Return.Errors {
-					p.errors <- pErr
-				} else {
-					Logger.Println(pErr)
-				}
-				continue
-			}
-			p.inFlight.Add(1)
-		}
-
-		version := 1
-		if p.conf.Version.IsAtLeast(V0_11_0_0) {
-			version = 2
-		} else if msg.Headers != nil {
-			p.returnError(msg, ConfigurationError("Producing headers requires Kafka at least v0.11"))
-			continue
-		}
-		if msg.byteSize(version) > p.conf.Producer.MaxMessageBytes {
-			p.returnError(msg, ErrMessageSizeTooLarge)
-			continue
-		}
-
-		handler := handlers[msg.Topic]
-		if handler == nil {
-			handler = p.newTopicProducer(msg.Topic)
-			handlers[msg.Topic] = handler
-		}
-
-		handler <- msg
-	}
-
-	for _, handler := range handlers {
-		close(handler)
-	}
-}
-
-// one per topic
-// partitions messages, then dispatches them by partition
-type topicProducer struct {
-	parent *asyncProducer
-	topic  string
-	input  <-chan *ProducerMessage
-
-	breaker     *breaker.Breaker
-	handlers    map[int32]chan<- *ProducerMessage
-	partitioner Partitioner
-}
-
-func (p *asyncProducer) newTopicProducer(topic string) chan<- *ProducerMessage {
-	input := make(chan *ProducerMessage, p.conf.ChannelBufferSize)
-	tp := &topicProducer{
-		parent:      p,
-		topic:       topic,
-		input:       input,
-		breaker:     breaker.New(3, 1, 10*time.Second),
-		handlers:    make(map[int32]chan<- *ProducerMessage),
-		partitioner: p.conf.Producer.Partitioner(topic),
-	}
-	go withRecover(tp.dispatch)
-	return input
-}
-
-func (tp *topicProducer) dispatch() {
-	for msg := range tp.input {
-		if msg.retries == 0 {
-			if err := tp.partitionMessage(msg); err != nil {
-				tp.parent.returnError(msg, err)
-				continue
-			}
-		}
-		// All messages being retried (sent or not) have already had their retry count updated
-		if tp.parent.conf.Producer.Idempotent && msg.retries == 0 {
-			msg.sequenceNumber = tp.parent.txnmgr.getAndIncrementSequenceNumber(msg.Topic, msg.Partition)
-		}
-
-		handler := tp.handlers[msg.Partition]
-		if handler == nil {
-			handler = tp.parent.newPartitionProducer(msg.Topic, msg.Partition)
-			tp.handlers[msg.Partition] = handler
-		}
-
-		handler <- msg
-	}
-
-	for _, handler := range tp.handlers {
-		close(handler)
-	}
-}
-
-func (tp *topicProducer) partitionMessage(msg *ProducerMessage) error {
-	var partitions []int32
-
-	err := tp.breaker.Run(func() (err error) {
-		var requiresConsistency = false
-		if ep, ok := tp.partitioner.(DynamicConsistencyPartitioner); ok {
-			requiresConsistency = ep.MessageRequiresConsistency(msg)
-		} else {
-			requiresConsistency = tp.partitioner.RequiresConsistency()
-		}
-
-		if requiresConsistency {
-			partitions, err = tp.parent.client.Partitions(msg.Topic)
-		} else {
-			partitions, err = tp.parent.client.WritablePartitions(msg.Topic)
-		}
-		return
-	})
-
-	if err != nil {
-		return err
-	}
-
-	numPartitions := int32(len(partitions))
-
-	if numPartitions == 0 {
-		return ErrLeaderNotAvailable
-	}
-
-	choice, err := tp.partitioner.Partition(msg, numPartitions)
-
-	if err != nil {
-		return err
-	} else if choice < 0 || choice >= numPartitions {
-		return ErrInvalidPartition
-	}
-
-	msg.Partition = partitions[choice]
-
-	return nil
-}
-
-// one per partition per topic
-// dispatches messages to the appropriate broker
-// also responsible for maintaining message order during retries
-type partitionProducer struct {
-	parent    *asyncProducer
-	topic     string
-	partition int32
-	input     <-chan *ProducerMessage
-
-	leader         *Broker
-	breaker        *breaker.Breaker
-	brokerProducer *brokerProducer
-
-	// highWatermark tracks the "current" retry level, which is the only one where we actually let messages through,
-	// all other messages get buffered in retryState[msg.retries].buf to preserve ordering
-	// retryState[msg.retries].expectChaser simply tracks whether we've seen a fin message for a given level (and
-	// therefore whether our buffer is complete and safe to flush)
-	highWatermark int
-	retryState    []partitionRetryState
-}
-
-type partitionRetryState struct {
-	buf          []*ProducerMessage
-	expectChaser bool
-}
-
-func (p *asyncProducer) newPartitionProducer(topic string, partition int32) chan<- *ProducerMessage {
-	input := make(chan *ProducerMessage, p.conf.ChannelBufferSize)
-	pp := &partitionProducer{
-		parent:    p,
-		topic:     topic,
-		partition: partition,
-		input:     input,
-
-		breaker:    breaker.New(3, 1, 10*time.Second),
-		retryState: make([]partitionRetryState, p.conf.Producer.Retry.Max+1),
-	}
-	go withRecover(pp.dispatch)
-	return input
-}
-
-func (pp *partitionProducer) backoff(retries int) {
-	var backoff time.Duration
-	if pp.parent.conf.Producer.Retry.BackoffFunc != nil {
-		maxRetries := pp.parent.conf.Producer.Retry.Max
-		backoff = pp.parent.conf.Producer.Retry.BackoffFunc(retries, maxRetries)
-	} else {
-		backoff = pp.parent.conf.Producer.Retry.Backoff
-	}
-	if backoff > 0 {
-		time.Sleep(backoff)
-	}
-}
-
-func (pp *partitionProducer) dispatch() {
-	// try to prefetch the leader; if this doesn't work, we'll do a proper call to `updateLeader`
-	// on the first message
-	pp.leader, _ = pp.parent.client.Leader(pp.topic, pp.partition)
-	if pp.leader != nil {
-		pp.brokerProducer = pp.parent.getBrokerProducer(pp.leader)
-		pp.parent.inFlight.Add(1) // we're generating a syn message; track it so we don't shut down while it's still inflight
-		pp.brokerProducer.input <- &ProducerMessage{Topic: pp.topic, Partition: pp.partition, flags: syn}
-	}
-
-	defer func() {
-		if pp.brokerProducer != nil {
-			pp.parent.unrefBrokerProducer(pp.leader, pp.brokerProducer)
-		}
-	}()
-
-	for msg := range pp.input {
-
-		if pp.brokerProducer != nil && pp.brokerProducer.abandoned != nil {
-			select {
-			case <-pp.brokerProducer.abandoned:
-				// a message on the abandoned channel means that our current broker selection is out of date
-				Logger.Printf("producer/leader/%s/%d abandoning broker %d\n", pp.topic, pp.partition, pp.leader.ID())
-				pp.parent.unrefBrokerProducer(pp.leader, pp.brokerProducer)
-				pp.brokerProducer = nil
-				time.Sleep(pp.parent.conf.Producer.Retry.Backoff)
-			default:
-				// producer connection is still open.
-			}
-		}
-
-		if msg.retries > pp.highWatermark {
-			// a new, higher, retry level; handle it and then back off
-			pp.newHighWatermark(msg.retries)
-			pp.backoff(msg.retries)
-		} else if pp.highWatermark > 0 {
-			// we are retrying something (else highWatermark would be 0) but this message is not a *new* retry level
-			if msg.retries < pp.highWatermark {
-				// in fact this message is not even the current retry level, so buffer it for now (unless it's a just a fin)
-				if msg.flags&fin == fin {
-					pp.retryState[msg.retries].expectChaser = false
-					pp.parent.inFlight.Done() // this fin is now handled and will be garbage collected
-				} else {
-					pp.retryState[msg.retries].buf = append(pp.retryState[msg.retries].buf, msg)
-				}
-				continue
-			} else if msg.flags&fin == fin {
-				// this message is of the current retry level (msg.retries == highWatermark) and the fin flag is set,
-				// meaning this retry level is done and we can go down (at least) one level and flush that
-				pp.retryState[pp.highWatermark].expectChaser = false
-				pp.flushRetryBuffers()
-				pp.parent.inFlight.Done() // this fin is now handled and will be garbage collected
-				continue
-			}
-		}
-
-		// if we made it this far then the current msg contains real data, and can be sent to the next goroutine
-		// without breaking any of our ordering guarantees
-
-		if pp.brokerProducer == nil {
-			if err := pp.updateLeader(); err != nil {
-				pp.parent.returnError(msg, err)
-				pp.backoff(msg.retries)
-				continue
-			}
-			Logger.Printf("producer/leader/%s/%d selected broker %d\n", pp.topic, pp.partition, pp.leader.ID())
-		}
-
-		pp.brokerProducer.input <- msg
-	}
-}
-
-func (pp *partitionProducer) newHighWatermark(hwm int) {
-	Logger.Printf("producer/leader/%s/%d state change to [retrying-%d]\n", pp.topic, pp.partition, hwm)
-	pp.highWatermark = hwm
-
-	// send off a fin so that we know when everything "in between" has made it
-	// back to us and we can safely flush the backlog (otherwise we risk re-ordering messages)
-	pp.retryState[pp.highWatermark].expectChaser = true
-	pp.parent.inFlight.Add(1) // we're generating a fin message; track it so we don't shut down while it's still inflight
-	pp.brokerProducer.input <- &ProducerMessage{Topic: pp.topic, Partition: pp.partition, flags: fin, retries: pp.highWatermark - 1}
-
-	// a new HWM means that our current broker selection is out of date
-	Logger.Printf("producer/leader/%s/%d abandoning broker %d\n", pp.topic, pp.partition, pp.leader.ID())
-	pp.parent.unrefBrokerProducer(pp.leader, pp.brokerProducer)
-	pp.brokerProducer = nil
-}
-
-func (pp *partitionProducer) flushRetryBuffers() {
-	Logger.Printf("producer/leader/%s/%d state change to [flushing-%d]\n", pp.topic, pp.partition, pp.highWatermark)
-	for {
-		pp.highWatermark--
-
-		if pp.brokerProducer == nil {
-			if err := pp.updateLeader(); err != nil {
-				pp.parent.returnErrors(pp.retryState[pp.highWatermark].buf, err)
-				goto flushDone
-			}
-			Logger.Printf("producer/leader/%s/%d selected broker %d\n", pp.topic, pp.partition, pp.leader.ID())
-		}
-
-		for _, msg := range pp.retryState[pp.highWatermark].buf {
-			pp.brokerProducer.input <- msg
-		}
-
-	flushDone:
-		pp.retryState[pp.highWatermark].buf = nil
-		if pp.retryState[pp.highWatermark].expectChaser {
-			Logger.Printf("producer/leader/%s/%d state change to [retrying-%d]\n", pp.topic, pp.partition, pp.highWatermark)
-			break
-		} else if pp.highWatermark == 0 {
-			Logger.Printf("producer/leader/%s/%d state change to [normal]\n", pp.topic, pp.partition)
-			break
-		}
-	}
-}
-
-func (pp *partitionProducer) updateLeader() error {
-	return pp.breaker.Run(func() (err error) {
-		if err = pp.parent.client.RefreshMetadata(pp.topic); err != nil {
-			return err
-		}
-
-		if pp.leader, err = pp.parent.client.Leader(pp.topic, pp.partition); err != nil {
-			return err
-		}
-
-		pp.brokerProducer = pp.parent.getBrokerProducer(pp.leader)
-		pp.parent.inFlight.Add(1) // we're generating a syn message; track it so we don't shut down while it's still inflight
-		pp.brokerProducer.input <- &ProducerMessage{Topic: pp.topic, Partition: pp.partition, flags: syn}
-
-		return nil
-	})
-}
-
-// one per broker; also constructs an associated flusher
-func (p *asyncProducer) newBrokerProducer(broker *Broker) *brokerProducer {
-	var (
-		input     = make(chan *ProducerMessage)
-		bridge    = make(chan *produceSet)
-		responses = make(chan *brokerProducerResponse)
-	)
-
-	bp := &brokerProducer{
-		parent:         p,
-		broker:         broker,
-		input:          input,
-		output:         bridge,
-		responses:      responses,
-		buffer:         newProduceSet(p),
-		currentRetries: make(map[string]map[int32]error),
-	}
-	go withRecover(bp.run)
-
-	// minimal bridge to make the network response `select`able
-	go withRecover(func() {
-		for set := range bridge {
-			request := set.buildRequest()
-
-			response, err := broker.Produce(request)
-
-			responses <- &brokerProducerResponse{
-				set: set,
-				err: err,
-				res: response,
-			}
-		}
-		close(responses)
-	})
-
-	if p.conf.Producer.Retry.Max <= 0 {
-		bp.abandoned = make(chan struct{})
-	}
-
-	return bp
-}
-
-type brokerProducerResponse struct {
-	set *produceSet
-	err error
-	res *ProduceResponse
-}
-
-// groups messages together into appropriately-sized batches for sending to the broker
-// handles state related to retries etc
-type brokerProducer struct {
-	parent *asyncProducer
-	broker *Broker
-
-	input     chan *ProducerMessage
-	output    chan<- *produceSet
-	responses <-chan *brokerProducerResponse
-	abandoned chan struct{}
-
-	buffer     *produceSet
-	timer      <-chan time.Time
-	timerFired bool
-
-	closing        error
-	currentRetries map[string]map[int32]error
-}
-
-func (bp *brokerProducer) run() {
-	var output chan<- *produceSet
-	Logger.Printf("producer/broker/%d starting up\n", bp.broker.ID())
-
-	for {
-		select {
-		case msg := <-bp.input:
-			if msg == nil {
-				bp.shutdown()
-				return
-			}
-
-			if msg.flags&syn == syn {
-				Logger.Printf("producer/broker/%d state change to [open] on %s/%d\n",
-					bp.broker.ID(), msg.Topic, msg.Partition)
-				if bp.currentRetries[msg.Topic] == nil {
-					bp.currentRetries[msg.Topic] = make(map[int32]error)
-				}
-				bp.currentRetries[msg.Topic][msg.Partition] = nil
-				bp.parent.inFlight.Done()
-				continue
-			}
-
-			if reason := bp.needsRetry(msg); reason != nil {
-				bp.parent.retryMessage(msg, reason)
-
-				if bp.closing == nil && msg.flags&fin == fin {
-					// we were retrying this partition but we can start processing again
-					delete(bp.currentRetries[msg.Topic], msg.Partition)
-					Logger.Printf("producer/broker/%d state change to [closed] on %s/%d\n",
-						bp.broker.ID(), msg.Topic, msg.Partition)
-				}
-
-				continue
-			}
-
-			if bp.buffer.wouldOverflow(msg) {
-				if err := bp.waitForSpace(msg); err != nil {
-					bp.parent.retryMessage(msg, err)
-					continue
-				}
-			}
-
-			if err := bp.buffer.add(msg); err != nil {
-				bp.parent.returnError(msg, err)
-				continue
-			}
-
-			if bp.parent.conf.Producer.Flush.Frequency > 0 && bp.timer == nil {
-				bp.timer = time.After(bp.parent.conf.Producer.Flush.Frequency)
-			}
-		case <-bp.timer:
-			bp.timerFired = true
-		case output <- bp.buffer:
-			bp.rollOver()
-		case response := <-bp.responses:
-			bp.handleResponse(response)
-		}
-
-		if bp.timerFired || bp.buffer.readyToFlush() {
-			output = bp.output
-		} else {
-			output = nil
-		}
-	}
-}
-
-func (bp *brokerProducer) shutdown() {
-	for !bp.buffer.empty() {
-		select {
-		case response := <-bp.responses:
-			bp.handleResponse(response)
-		case bp.output <- bp.buffer:
-			bp.rollOver()
-		}
-	}
-	close(bp.output)
-	for response := range bp.responses {
-		bp.handleResponse(response)
-	}
-
-	Logger.Printf("producer/broker/%d shut down\n", bp.broker.ID())
-}
-
-func (bp *brokerProducer) needsRetry(msg *ProducerMessage) error {
-	if bp.closing != nil {
-		return bp.closing
-	}
-
-	return bp.currentRetries[msg.Topic][msg.Partition]
-}
-
-func (bp *brokerProducer) waitForSpace(msg *ProducerMessage) error {
-	Logger.Printf("producer/broker/%d maximum request accumulated, waiting for space\n", bp.broker.ID())
-
-	for {
-		select {
-		case response := <-bp.responses:
-			bp.handleResponse(response)
-			// handling a response can change our state, so re-check some things
-			if reason := bp.needsRetry(msg); reason != nil {
-				return reason
-			} else if !bp.buffer.wouldOverflow(msg) {
-				return nil
-			}
-		case bp.output <- bp.buffer:
-			bp.rollOver()
-			return nil
-		}
-	}
-}
-
-func (bp *brokerProducer) rollOver() {
-	bp.timer = nil
-	bp.timerFired = false
-	bp.buffer = newProduceSet(bp.parent)
-}
-
-func (bp *brokerProducer) handleResponse(response *brokerProducerResponse) {
-	if response.err != nil {
-		bp.handleError(response.set, response.err)
-	} else {
-		bp.handleSuccess(response.set, response.res)
-	}
-
-	if bp.buffer.empty() {
-		bp.rollOver() // this can happen if the response invalidated our buffer
-	}
-}
-
-func (bp *brokerProducer) handleSuccess(sent *produceSet, response *ProduceResponse) {
-	// we iterate through the blocks in the request set, not the response, so that we notice
-	// if the response is missing a block completely
-	var retryTopics []string
-	sent.eachPartition(func(topic string, partition int32, pSet *partitionSet) {
-		if response == nil {
-			// this only happens when RequiredAcks is NoResponse, so we have to assume success
-			bp.parent.returnSuccesses(pSet.msgs)
-			return
-		}
-
-		block := response.GetBlock(topic, partition)
-		if block == nil {
-			bp.parent.returnErrors(pSet.msgs, ErrIncompleteResponse)
-			return
-		}
-
-		switch block.Err {
-		// Success
-		case ErrNoError:
-			if bp.parent.conf.Version.IsAtLeast(V0_10_0_0) && !block.Timestamp.IsZero() {
-				for _, msg := range pSet.msgs {
-					msg.Timestamp = block.Timestamp
-				}
-			}
-			for i, msg := range pSet.msgs {
-				msg.Offset = block.Offset + int64(i)
-			}
-			bp.parent.returnSuccesses(pSet.msgs)
-		// Duplicate
-		case ErrDuplicateSequenceNumber:
-			bp.parent.returnSuccesses(pSet.msgs)
-		// Retriable errors
-		case ErrInvalidMessage, ErrUnknownTopicOrPartition, ErrLeaderNotAvailable, ErrNotLeaderForPartition,
-			ErrRequestTimedOut, ErrNotEnoughReplicas, ErrNotEnoughReplicasAfterAppend:
-			if bp.parent.conf.Producer.Retry.Max <= 0 {
-				bp.parent.abandonBrokerConnection(bp.broker)
-				bp.parent.returnErrors(pSet.msgs, block.Err)
-			} else {
-				retryTopics = append(retryTopics, topic)
-			}
-		// Other non-retriable errors
-		default:
-			if bp.parent.conf.Producer.Retry.Max <= 0 {
-				bp.parent.abandonBrokerConnection(bp.broker)
-			}
-			bp.parent.returnErrors(pSet.msgs, block.Err)
-		}
-	})
-
-	if len(retryTopics) > 0 {
-		if bp.parent.conf.Producer.Idempotent {
-			err := bp.parent.client.RefreshMetadata(retryTopics...)
-			if err != nil {
-				Logger.Printf("Failed refreshing metadata because of %v\n", err)
-			}
-		}
-
-		sent.eachPartition(func(topic string, partition int32, pSet *partitionSet) {
-			block := response.GetBlock(topic, partition)
-			if block == nil {
-				// handled in the previous "eachPartition" loop
-				return
-			}
-
-			switch block.Err {
-			case ErrInvalidMessage, ErrUnknownTopicOrPartition, ErrLeaderNotAvailable, ErrNotLeaderForPartition,
-				ErrRequestTimedOut, ErrNotEnoughReplicas, ErrNotEnoughReplicasAfterAppend:
-				Logger.Printf("producer/broker/%d state change to [retrying] on %s/%d because %v\n",
-					bp.broker.ID(), topic, partition, block.Err)
-				if bp.currentRetries[topic] == nil {
-					bp.currentRetries[topic] = make(map[int32]error)
-				}
-				bp.currentRetries[topic][partition] = block.Err
-				if bp.parent.conf.Producer.Idempotent {
-					go bp.parent.retryBatch(topic, partition, pSet, block.Err)
-				} else {
-					bp.parent.retryMessages(pSet.msgs, block.Err)
-				}
-				// dropping the following messages has the side effect of incrementing their retry count
-				bp.parent.retryMessages(bp.buffer.dropPartition(topic, partition), block.Err)
-			}
-		})
-	}
-}
-
-func (p *asyncProducer) retryBatch(topic string, partition int32, pSet *partitionSet, kerr KError) {
-	Logger.Printf("Retrying batch for %v-%d because of %s\n", topic, partition, kerr)
-	produceSet := newProduceSet(p)
-	produceSet.msgs[topic] = make(map[int32]*partitionSet)
-	produceSet.msgs[topic][partition] = pSet
-	produceSet.bufferBytes += pSet.bufferBytes
-	produceSet.bufferCount += len(pSet.msgs)
-	for _, msg := range pSet.msgs {
-		if msg.retries >= p.conf.Producer.Retry.Max {
-			p.returnError(msg, kerr)
-			return
-		}
-		msg.retries++
-	}
-
-	// it's expected that a metadata refresh has been requested prior to calling retryBatch
-	leader, err := p.client.Leader(topic, partition)
-	if err != nil {
-		Logger.Printf("Failed retrying batch for %v-%d because of %v while looking up for new leader\n", topic, partition, err)
-		for _, msg := range pSet.msgs {
-			p.returnError(msg, kerr)
-		}
-		return
-	}
-	bp := p.getBrokerProducer(leader)
-	bp.output <- produceSet
-}
-
-func (bp *brokerProducer) handleError(sent *produceSet, err error) {
-	switch err.(type) {
-	case PacketEncodingError:
-		sent.eachPartition(func(topic string, partition int32, pSet *partitionSet) {
-			bp.parent.returnErrors(pSet.msgs, err)
-		})
-	default:
-		Logger.Printf("producer/broker/%d state change to [closing] because %s\n", bp.broker.ID(), err)
-		bp.parent.abandonBrokerConnection(bp.broker)
-		_ = bp.broker.Close()
-		bp.closing = err
-		sent.eachPartition(func(topic string, partition int32, pSet *partitionSet) {
-			bp.parent.retryMessages(pSet.msgs, err)
-		})
-		bp.buffer.eachPartition(func(topic string, partition int32, pSet *partitionSet) {
-			bp.parent.retryMessages(pSet.msgs, err)
-		})
-		bp.rollOver()
-	}
-}
-
-// singleton
-// effectively a "bridge" between the flushers and the dispatcher in order to avoid deadlock
-// based on https://godoc.org/github.com/eapache/channels#InfiniteChannel
-func (p *asyncProducer) retryHandler() {
-	var msg *ProducerMessage
-	buf := queue.New()
-
-	for {
-		if buf.Length() == 0 {
-			msg = <-p.retries
-		} else {
-			select {
-			case msg = <-p.retries:
-			case p.input <- buf.Peek().(*ProducerMessage):
-				buf.Remove()
-				continue
-			}
-		}
-
-		if msg == nil {
-			return
-		}
-
-		buf.Add(msg)
-	}
-}
-
-// utility functions
-
-func (p *asyncProducer) shutdown() {
-	Logger.Println("Producer shutting down.")
-	p.inFlight.Add(1)
-	p.input <- &ProducerMessage{flags: shutdown}
-
-	p.inFlight.Wait()
-
-	if p.ownClient {
-		err := p.client.Close()
-		if err != nil {
-			Logger.Println("producer/shutdown failed to close the embedded client:", err)
-		}
-	}
-
-	close(p.input)
-	close(p.retries)
-	close(p.errors)
-	close(p.successes)
-}
-
-func (p *asyncProducer) returnError(msg *ProducerMessage, err error) {
-	msg.clear()
-	pErr := &ProducerError{Msg: msg, Err: err}
-	if p.conf.Producer.Return.Errors {
-		p.errors <- pErr
-	} else {
-		Logger.Println(pErr)
-	}
-	p.inFlight.Done()
-}
-
-func (p *asyncProducer) returnErrors(batch []*ProducerMessage, err error) {
-	for _, msg := range batch {
-		p.returnError(msg, err)
-	}
-}
-
-func (p *asyncProducer) returnSuccesses(batch []*ProducerMessage) {
-	for _, msg := range batch {
-		if p.conf.Producer.Return.Successes {
-			msg.clear()
-			p.successes <- msg
-		}
-		p.inFlight.Done()
-	}
-}
-
-func (p *asyncProducer) retryMessage(msg *ProducerMessage, err error) {
-	if msg.retries >= p.conf.Producer.Retry.Max {
-		p.returnError(msg, err)
-	} else {
-		msg.retries++
-		p.retries <- msg
-	}
-}
-
-func (p *asyncProducer) retryMessages(batch []*ProducerMessage, err error) {
-	for _, msg := range batch {
-		p.retryMessage(msg, err)
-	}
-}
-
-func (p *asyncProducer) getBrokerProducer(broker *Broker) *brokerProducer {
-	p.brokerLock.Lock()
-	defer p.brokerLock.Unlock()
-
-	bp := p.brokers[broker]
-
-	if bp == nil {
-		bp = p.newBrokerProducer(broker)
-		p.brokers[broker] = bp
-		p.brokerRefs[bp] = 0
-	}
-
-	p.brokerRefs[bp]++
-
-	return bp
-}
-
-func (p *asyncProducer) unrefBrokerProducer(broker *Broker, bp *brokerProducer) {
-	p.brokerLock.Lock()
-	defer p.brokerLock.Unlock()
-
-	p.brokerRefs[bp]--
-	if p.brokerRefs[bp] == 0 {
-		close(bp.input)
-		delete(p.brokerRefs, bp)
-
-		if p.brokers[broker] == bp {
-			delete(p.brokers, broker)
-		}
-	}
-}
-
-func (p *asyncProducer) abandonBrokerConnection(broker *Broker) {
-	p.brokerLock.Lock()
-	defer p.brokerLock.Unlock()
-
-	bc, ok := p.brokers[broker]
-	if ok && bc.abandoned != nil {
-		close(bc.abandoned)
-	}
-
-	delete(p.brokers, broker)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/balance_strategy.go b/vendor/gopkg.in/Shopify/sarama.v1/balance_strategy.go
deleted file mode 100644
index e78988d..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/balance_strategy.go
+++ /dev/null
@@ -1,129 +0,0 @@
-package sarama
-
-import (
-	"math"
-	"sort"
-)
-
-// BalanceStrategyPlan is the results of any BalanceStrategy.Plan attempt.
-// It contains an allocation of topic/partitions by memberID in the form of
-// a `memberID -> topic -> partitions` map.
-type BalanceStrategyPlan map[string]map[string][]int32
-
-// Add assigns a topic with a number partitions to a member.
-func (p BalanceStrategyPlan) Add(memberID, topic string, partitions ...int32) {
-	if len(partitions) == 0 {
-		return
-	}
-	if _, ok := p[memberID]; !ok {
-		p[memberID] = make(map[string][]int32, 1)
-	}
-	p[memberID][topic] = append(p[memberID][topic], partitions...)
-}
-
-// --------------------------------------------------------------------
-
-// BalanceStrategy is used to balance topics and partitions
-// across memebers of a consumer group
-type BalanceStrategy interface {
-	// Name uniquely identifies the strategy.
-	Name() string
-
-	// Plan accepts a map of `memberID -> metadata` and a map of `topic -> partitions`
-	// and returns a distribution plan.
-	Plan(members map[string]ConsumerGroupMemberMetadata, topics map[string][]int32) (BalanceStrategyPlan, error)
-}
-
-// --------------------------------------------------------------------
-
-// BalanceStrategyRange is the default and assigns partitions as ranges to consumer group members.
-// Example with one topic T with six partitions (0..5) and two members (M1, M2):
-//   M1: {T: [0, 1, 2]}
-//   M2: {T: [3, 4, 5]}
-var BalanceStrategyRange = &balanceStrategy{
-	name: "range",
-	coreFn: func(plan BalanceStrategyPlan, memberIDs []string, topic string, partitions []int32) {
-		step := float64(len(partitions)) / float64(len(memberIDs))
-
-		for i, memberID := range memberIDs {
-			pos := float64(i)
-			min := int(math.Floor(pos*step + 0.5))
-			max := int(math.Floor((pos+1)*step + 0.5))
-			plan.Add(memberID, topic, partitions[min:max]...)
-		}
-	},
-}
-
-// BalanceStrategyRoundRobin assigns partitions to members in alternating order.
-// Example with topic T with six partitions (0..5) and two members (M1, M2):
-//   M1: {T: [0, 2, 4]}
-//   M2: {T: [1, 3, 5]}
-var BalanceStrategyRoundRobin = &balanceStrategy{
-	name: "roundrobin",
-	coreFn: func(plan BalanceStrategyPlan, memberIDs []string, topic string, partitions []int32) {
-		for i, part := range partitions {
-			memberID := memberIDs[i%len(memberIDs)]
-			plan.Add(memberID, topic, part)
-		}
-	},
-}
-
-// --------------------------------------------------------------------
-
-type balanceStrategy struct {
-	name   string
-	coreFn func(plan BalanceStrategyPlan, memberIDs []string, topic string, partitions []int32)
-}
-
-// Name implements BalanceStrategy.
-func (s *balanceStrategy) Name() string { return s.name }
-
-// Balance implements BalanceStrategy.
-func (s *balanceStrategy) Plan(members map[string]ConsumerGroupMemberMetadata, topics map[string][]int32) (BalanceStrategyPlan, error) {
-	// Build members by topic map
-	mbt := make(map[string][]string)
-	for memberID, meta := range members {
-		for _, topic := range meta.Topics {
-			mbt[topic] = append(mbt[topic], memberID)
-		}
-	}
-
-	// Sort members for each topic
-	for topic, memberIDs := range mbt {
-		sort.Sort(&balanceStrategySortable{
-			topic:     topic,
-			memberIDs: memberIDs,
-		})
-	}
-
-	// Assemble plan
-	plan := make(BalanceStrategyPlan, len(members))
-	for topic, memberIDs := range mbt {
-		s.coreFn(plan, memberIDs, topic, topics[topic])
-	}
-	return plan, nil
-}
-
-type balanceStrategySortable struct {
-	topic     string
-	memberIDs []string
-}
-
-func (p balanceStrategySortable) Len() int { return len(p.memberIDs) }
-func (p balanceStrategySortable) Swap(i, j int) {
-	p.memberIDs[i], p.memberIDs[j] = p.memberIDs[j], p.memberIDs[i]
-}
-func (p balanceStrategySortable) Less(i, j int) bool {
-	return balanceStrategyHashValue(p.topic, p.memberIDs[i]) < balanceStrategyHashValue(p.topic, p.memberIDs[j])
-}
-
-func balanceStrategyHashValue(vv ...string) uint32 {
-	h := uint32(2166136261)
-	for _, s := range vv {
-		for _, c := range s {
-			h ^= uint32(c)
-			h *= 16777619
-		}
-	}
-	return h
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/broker.go b/vendor/gopkg.in/Shopify/sarama.v1/broker.go
deleted file mode 100644
index 9129089..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/broker.go
+++ /dev/null
@@ -1,1102 +0,0 @@
-package sarama
-
-import (
-	"crypto/tls"
-	"encoding/binary"
-	"fmt"
-	"io"
-	"net"
-	"sort"
-	"strconv"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/rcrowley/go-metrics"
-)
-
-// Broker represents a single Kafka broker connection. All operations on this object are entirely concurrency-safe.
-type Broker struct {
-	id   int32
-	addr string
-	rack *string
-
-	conf          *Config
-	correlationID int32
-	conn          net.Conn
-	connErr       error
-	lock          sync.Mutex
-	opened        int32
-
-	responses chan responsePromise
-	done      chan bool
-
-	incomingByteRate       metrics.Meter
-	requestRate            metrics.Meter
-	requestSize            metrics.Histogram
-	requestLatency         metrics.Histogram
-	outgoingByteRate       metrics.Meter
-	responseRate           metrics.Meter
-	responseSize           metrics.Histogram
-	brokerIncomingByteRate metrics.Meter
-	brokerRequestRate      metrics.Meter
-	brokerRequestSize      metrics.Histogram
-	brokerRequestLatency   metrics.Histogram
-	brokerOutgoingByteRate metrics.Meter
-	brokerResponseRate     metrics.Meter
-	brokerResponseSize     metrics.Histogram
-}
-
-// SASLMechanism specifies the SASL mechanism the client uses to authenticate with the broker
-type SASLMechanism string
-
-const (
-	// SASLTypeOAuth represents the SASL/OAUTHBEARER mechanism (Kafka 2.0.0+)
-	SASLTypeOAuth = "OAUTHBEARER"
-	// SASLTypePlaintext represents the SASL/PLAIN mechanism
-	SASLTypePlaintext = "PLAIN"
-	// SASLHandshakeV0 is v0 of the Kafka SASL handshake protocol. Client and
-	// server negotiate SASL auth using opaque packets.
-	SASLHandshakeV0 = int16(0)
-	// SASLHandshakeV1 is v1 of the Kafka SASL handshake protocol. Client and
-	// server negotiate SASL by wrapping tokens with Kafka protocol headers.
-	SASLHandshakeV1 = int16(1)
-	// SASLExtKeyAuth is the reserved extension key name sent as part of the
-	// SASL/OAUTHBEARER intial client response
-	SASLExtKeyAuth = "auth"
-)
-
-// AccessToken contains an access token used to authenticate a
-// SASL/OAUTHBEARER client along with associated metadata.
-type AccessToken struct {
-	// Token is the access token payload.
-	Token string
-	// Extensions is a optional map of arbitrary key-value pairs that can be
-	// sent with the SASL/OAUTHBEARER initial client response. These values are
-	// ignored by the SASL server if they are unexpected. This feature is only
-	// supported by Kafka >= 2.1.0.
-	Extensions map[string]string
-}
-
-// AccessTokenProvider is the interface that encapsulates how implementors
-// can generate access tokens for Kafka broker authentication.
-type AccessTokenProvider interface {
-	// Token returns an access token. The implementation should ensure token
-	// reuse so that multiple calls at connect time do not create multiple
-	// tokens. The implementation should also periodically refresh the token in
-	// order to guarantee that each call returns an unexpired token.  This
-	// method should not block indefinitely--a timeout error should be returned
-	// after a short period of inactivity so that the broker connection logic
-	// can log debugging information and retry.
-	Token() (*AccessToken, error)
-}
-
-type responsePromise struct {
-	requestTime   time.Time
-	correlationID int32
-	packets       chan []byte
-	errors        chan error
-}
-
-// NewBroker creates and returns a Broker targeting the given host:port address.
-// This does not attempt to actually connect, you have to call Open() for that.
-func NewBroker(addr string) *Broker {
-	return &Broker{id: -1, addr: addr}
-}
-
-// Open tries to connect to the Broker if it is not already connected or connecting, but does not block
-// waiting for the connection to complete. This means that any subsequent operations on the broker will
-// block waiting for the connection to succeed or fail. To get the effect of a fully synchronous Open call,
-// follow it by a call to Connected(). The only errors Open will return directly are ConfigurationError or
-// AlreadyConnected. If conf is nil, the result of NewConfig() is used.
-func (b *Broker) Open(conf *Config) error {
-	if !atomic.CompareAndSwapInt32(&b.opened, 0, 1) {
-		return ErrAlreadyConnected
-	}
-
-	if conf == nil {
-		conf = NewConfig()
-	}
-
-	err := conf.Validate()
-	if err != nil {
-		return err
-	}
-
-	b.lock.Lock()
-
-	go withRecover(func() {
-		defer b.lock.Unlock()
-
-		dialer := net.Dialer{
-			Timeout:   conf.Net.DialTimeout,
-			KeepAlive: conf.Net.KeepAlive,
-			LocalAddr: conf.Net.LocalAddr,
-		}
-
-		if conf.Net.TLS.Enable {
-			b.conn, b.connErr = tls.DialWithDialer(&dialer, "tcp", b.addr, conf.Net.TLS.Config)
-		} else {
-			b.conn, b.connErr = dialer.Dial("tcp", b.addr)
-		}
-		if b.connErr != nil {
-			Logger.Printf("Failed to connect to broker %s: %s\n", b.addr, b.connErr)
-			b.conn = nil
-			atomic.StoreInt32(&b.opened, 0)
-			return
-		}
-		b.conn = newBufConn(b.conn)
-
-		b.conf = conf
-
-		// Create or reuse the global metrics shared between brokers
-		b.incomingByteRate = metrics.GetOrRegisterMeter("incoming-byte-rate", conf.MetricRegistry)
-		b.requestRate = metrics.GetOrRegisterMeter("request-rate", conf.MetricRegistry)
-		b.requestSize = getOrRegisterHistogram("request-size", conf.MetricRegistry)
-		b.requestLatency = getOrRegisterHistogram("request-latency-in-ms", conf.MetricRegistry)
-		b.outgoingByteRate = metrics.GetOrRegisterMeter("outgoing-byte-rate", conf.MetricRegistry)
-		b.responseRate = metrics.GetOrRegisterMeter("response-rate", conf.MetricRegistry)
-		b.responseSize = getOrRegisterHistogram("response-size", conf.MetricRegistry)
-		// Do not gather metrics for seeded broker (only used during bootstrap) because they share
-		// the same id (-1) and are already exposed through the global metrics above
-		if b.id >= 0 {
-			b.brokerIncomingByteRate = getOrRegisterBrokerMeter("incoming-byte-rate", b, conf.MetricRegistry)
-			b.brokerRequestRate = getOrRegisterBrokerMeter("request-rate", b, conf.MetricRegistry)
-			b.brokerRequestSize = getOrRegisterBrokerHistogram("request-size", b, conf.MetricRegistry)
-			b.brokerRequestLatency = getOrRegisterBrokerHistogram("request-latency-in-ms", b, conf.MetricRegistry)
-			b.brokerOutgoingByteRate = getOrRegisterBrokerMeter("outgoing-byte-rate", b, conf.MetricRegistry)
-			b.brokerResponseRate = getOrRegisterBrokerMeter("response-rate", b, conf.MetricRegistry)
-			b.brokerResponseSize = getOrRegisterBrokerHistogram("response-size", b, conf.MetricRegistry)
-		}
-
-		if conf.Net.SASL.Enable {
-
-			b.connErr = b.authenticateViaSASL()
-
-			if b.connErr != nil {
-				err = b.conn.Close()
-				if err == nil {
-					Logger.Printf("Closed connection to broker %s\n", b.addr)
-				} else {
-					Logger.Printf("Error while closing connection to broker %s: %s\n", b.addr, err)
-				}
-				b.conn = nil
-				atomic.StoreInt32(&b.opened, 0)
-				return
-			}
-		}
-
-		b.done = make(chan bool)
-		b.responses = make(chan responsePromise, b.conf.Net.MaxOpenRequests-1)
-
-		if b.id >= 0 {
-			Logger.Printf("Connected to broker at %s (registered as #%d)\n", b.addr, b.id)
-		} else {
-			Logger.Printf("Connected to broker at %s (unregistered)\n", b.addr)
-		}
-		go withRecover(b.responseReceiver)
-	})
-
-	return nil
-}
-
-// Connected returns true if the broker is connected and false otherwise. If the broker is not
-// connected but it had tried to connect, the error from that connection attempt is also returned.
-func (b *Broker) Connected() (bool, error) {
-	b.lock.Lock()
-	defer b.lock.Unlock()
-
-	return b.conn != nil, b.connErr
-}
-
-func (b *Broker) Close() error {
-	b.lock.Lock()
-	defer b.lock.Unlock()
-
-	if b.conn == nil {
-		return ErrNotConnected
-	}
-
-	close(b.responses)
-	<-b.done
-
-	err := b.conn.Close()
-
-	b.conn = nil
-	b.connErr = nil
-	b.done = nil
-	b.responses = nil
-
-	if b.id >= 0 {
-		b.conf.MetricRegistry.Unregister(getMetricNameForBroker("incoming-byte-rate", b))
-		b.conf.MetricRegistry.Unregister(getMetricNameForBroker("request-rate", b))
-		b.conf.MetricRegistry.Unregister(getMetricNameForBroker("outgoing-byte-rate", b))
-		b.conf.MetricRegistry.Unregister(getMetricNameForBroker("response-rate", b))
-	}
-
-	if err == nil {
-		Logger.Printf("Closed connection to broker %s\n", b.addr)
-	} else {
-		Logger.Printf("Error while closing connection to broker %s: %s\n", b.addr, err)
-	}
-
-	atomic.StoreInt32(&b.opened, 0)
-
-	return err
-}
-
-// ID returns the broker ID retrieved from Kafka's metadata, or -1 if that is not known.
-func (b *Broker) ID() int32 {
-	return b.id
-}
-
-// Addr returns the broker address as either retrieved from Kafka's metadata or passed to NewBroker.
-func (b *Broker) Addr() string {
-	return b.addr
-}
-
-// Rack returns the broker's rack as retrieved from Kafka's metadata or the
-// empty string if it is not known.  The returned value corresponds to the
-// broker's broker.rack configuration setting.  Requires protocol version to be
-// at least v0.10.0.0.
-func (b *Broker) Rack() string {
-	if b.rack == nil {
-		return ""
-	}
-	return *b.rack
-}
-
-func (b *Broker) GetMetadata(request *MetadataRequest) (*MetadataResponse, error) {
-	response := new(MetadataResponse)
-
-	err := b.sendAndReceive(request, response)
-
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) GetConsumerMetadata(request *ConsumerMetadataRequest) (*ConsumerMetadataResponse, error) {
-	response := new(ConsumerMetadataResponse)
-
-	err := b.sendAndReceive(request, response)
-
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) FindCoordinator(request *FindCoordinatorRequest) (*FindCoordinatorResponse, error) {
-	response := new(FindCoordinatorResponse)
-
-	err := b.sendAndReceive(request, response)
-
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) GetAvailableOffsets(request *OffsetRequest) (*OffsetResponse, error) {
-	response := new(OffsetResponse)
-
-	err := b.sendAndReceive(request, response)
-
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) Produce(request *ProduceRequest) (*ProduceResponse, error) {
-	var response *ProduceResponse
-	var err error
-
-	if request.RequiredAcks == NoResponse {
-		err = b.sendAndReceive(request, nil)
-	} else {
-		response = new(ProduceResponse)
-		err = b.sendAndReceive(request, response)
-	}
-
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) Fetch(request *FetchRequest) (*FetchResponse, error) {
-	response := new(FetchResponse)
-
-	err := b.sendAndReceive(request, response)
-
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) CommitOffset(request *OffsetCommitRequest) (*OffsetCommitResponse, error) {
-	response := new(OffsetCommitResponse)
-
-	err := b.sendAndReceive(request, response)
-
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) FetchOffset(request *OffsetFetchRequest) (*OffsetFetchResponse, error) {
-	response := new(OffsetFetchResponse)
-
-	err := b.sendAndReceive(request, response)
-
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) JoinGroup(request *JoinGroupRequest) (*JoinGroupResponse, error) {
-	response := new(JoinGroupResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) SyncGroup(request *SyncGroupRequest) (*SyncGroupResponse, error) {
-	response := new(SyncGroupResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) LeaveGroup(request *LeaveGroupRequest) (*LeaveGroupResponse, error) {
-	response := new(LeaveGroupResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) Heartbeat(request *HeartbeatRequest) (*HeartbeatResponse, error) {
-	response := new(HeartbeatResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) ListGroups(request *ListGroupsRequest) (*ListGroupsResponse, error) {
-	response := new(ListGroupsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) DescribeGroups(request *DescribeGroupsRequest) (*DescribeGroupsResponse, error) {
-	response := new(DescribeGroupsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) ApiVersions(request *ApiVersionsRequest) (*ApiVersionsResponse, error) {
-	response := new(ApiVersionsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) CreateTopics(request *CreateTopicsRequest) (*CreateTopicsResponse, error) {
-	response := new(CreateTopicsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) DeleteTopics(request *DeleteTopicsRequest) (*DeleteTopicsResponse, error) {
-	response := new(DeleteTopicsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) CreatePartitions(request *CreatePartitionsRequest) (*CreatePartitionsResponse, error) {
-	response := new(CreatePartitionsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) DeleteRecords(request *DeleteRecordsRequest) (*DeleteRecordsResponse, error) {
-	response := new(DeleteRecordsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) DescribeAcls(request *DescribeAclsRequest) (*DescribeAclsResponse, error) {
-	response := new(DescribeAclsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) CreateAcls(request *CreateAclsRequest) (*CreateAclsResponse, error) {
-	response := new(CreateAclsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) DeleteAcls(request *DeleteAclsRequest) (*DeleteAclsResponse, error) {
-	response := new(DeleteAclsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) InitProducerID(request *InitProducerIDRequest) (*InitProducerIDResponse, error) {
-	response := new(InitProducerIDResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) AddPartitionsToTxn(request *AddPartitionsToTxnRequest) (*AddPartitionsToTxnResponse, error) {
-	response := new(AddPartitionsToTxnResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) AddOffsetsToTxn(request *AddOffsetsToTxnRequest) (*AddOffsetsToTxnResponse, error) {
-	response := new(AddOffsetsToTxnResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) EndTxn(request *EndTxnRequest) (*EndTxnResponse, error) {
-	response := new(EndTxnResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) TxnOffsetCommit(request *TxnOffsetCommitRequest) (*TxnOffsetCommitResponse, error) {
-	response := new(TxnOffsetCommitResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) DescribeConfigs(request *DescribeConfigsRequest) (*DescribeConfigsResponse, error) {
-	response := new(DescribeConfigsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) AlterConfigs(request *AlterConfigsRequest) (*AlterConfigsResponse, error) {
-	response := new(AlterConfigsResponse)
-
-	err := b.sendAndReceive(request, response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) DeleteGroups(request *DeleteGroupsRequest) (*DeleteGroupsResponse, error) {
-	response := new(DeleteGroupsResponse)
-
-	if err := b.sendAndReceive(request, response); err != nil {
-		return nil, err
-	}
-
-	return response, nil
-}
-
-func (b *Broker) send(rb protocolBody, promiseResponse bool) (*responsePromise, error) {
-	b.lock.Lock()
-	defer b.lock.Unlock()
-
-	if b.conn == nil {
-		if b.connErr != nil {
-			return nil, b.connErr
-		}
-		return nil, ErrNotConnected
-	}
-
-	if !b.conf.Version.IsAtLeast(rb.requiredVersion()) {
-		return nil, ErrUnsupportedVersion
-	}
-
-	req := &request{correlationID: b.correlationID, clientID: b.conf.ClientID, body: rb}
-	buf, err := encode(req, b.conf.MetricRegistry)
-	if err != nil {
-		return nil, err
-	}
-
-	err = b.conn.SetWriteDeadline(time.Now().Add(b.conf.Net.WriteTimeout))
-	if err != nil {
-		return nil, err
-	}
-
-	requestTime := time.Now()
-	bytes, err := b.conn.Write(buf)
-	b.updateOutgoingCommunicationMetrics(bytes)
-	if err != nil {
-		return nil, err
-	}
-	b.correlationID++
-
-	if !promiseResponse {
-		// Record request latency without the response
-		b.updateRequestLatencyMetrics(time.Since(requestTime))
-		return nil, nil
-	}
-
-	promise := responsePromise{requestTime, req.correlationID, make(chan []byte), make(chan error)}
-	b.responses <- promise
-
-	return &promise, nil
-}
-
-func (b *Broker) sendAndReceive(req protocolBody, res versionedDecoder) error {
-	promise, err := b.send(req, res != nil)
-
-	if err != nil {
-		return err
-	}
-
-	if promise == nil {
-		return nil
-	}
-
-	select {
-	case buf := <-promise.packets:
-		return versionedDecode(buf, res, req.version())
-	case err = <-promise.errors:
-		return err
-	}
-}
-
-func (b *Broker) decode(pd packetDecoder, version int16) (err error) {
-	b.id, err = pd.getInt32()
-	if err != nil {
-		return err
-	}
-
-	host, err := pd.getString()
-	if err != nil {
-		return err
-	}
-
-	port, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-
-	if version >= 1 {
-		b.rack, err = pd.getNullableString()
-		if err != nil {
-			return err
-		}
-	}
-
-	b.addr = net.JoinHostPort(host, fmt.Sprint(port))
-	if _, _, err := net.SplitHostPort(b.addr); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (b *Broker) encode(pe packetEncoder, version int16) (err error) {
-
-	host, portstr, err := net.SplitHostPort(b.addr)
-	if err != nil {
-		return err
-	}
-	port, err := strconv.Atoi(portstr)
-	if err != nil {
-		return err
-	}
-
-	pe.putInt32(b.id)
-
-	err = pe.putString(host)
-	if err != nil {
-		return err
-	}
-
-	pe.putInt32(int32(port))
-
-	if version >= 1 {
-		err = pe.putNullableString(b.rack)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (b *Broker) responseReceiver() {
-	var dead error
-	header := make([]byte, 8)
-	for response := range b.responses {
-		if dead != nil {
-			response.errors <- dead
-			continue
-		}
-
-		err := b.conn.SetReadDeadline(time.Now().Add(b.conf.Net.ReadTimeout))
-		if err != nil {
-			dead = err
-			response.errors <- err
-			continue
-		}
-
-		bytesReadHeader, err := io.ReadFull(b.conn, header)
-		requestLatency := time.Since(response.requestTime)
-		if err != nil {
-			b.updateIncomingCommunicationMetrics(bytesReadHeader, requestLatency)
-			dead = err
-			response.errors <- err
-			continue
-		}
-
-		decodedHeader := responseHeader{}
-		err = decode(header, &decodedHeader)
-		if err != nil {
-			b.updateIncomingCommunicationMetrics(bytesReadHeader, requestLatency)
-			dead = err
-			response.errors <- err
-			continue
-		}
-		if decodedHeader.correlationID != response.correlationID {
-			b.updateIncomingCommunicationMetrics(bytesReadHeader, requestLatency)
-			// TODO if decoded ID < cur ID, discard until we catch up
-			// TODO if decoded ID > cur ID, save it so when cur ID catches up we have a response
-			dead = PacketDecodingError{fmt.Sprintf("correlation ID didn't match, wanted %d, got %d", response.correlationID, decodedHeader.correlationID)}
-			response.errors <- dead
-			continue
-		}
-
-		buf := make([]byte, decodedHeader.length-4)
-		bytesReadBody, err := io.ReadFull(b.conn, buf)
-		b.updateIncomingCommunicationMetrics(bytesReadHeader+bytesReadBody, requestLatency)
-		if err != nil {
-			dead = err
-			response.errors <- err
-			continue
-		}
-
-		response.packets <- buf
-	}
-	close(b.done)
-}
-
-func (b *Broker) authenticateViaSASL() error {
-	if b.conf.Net.SASL.Mechanism == SASLTypeOAuth {
-		return b.sendAndReceiveSASLOAuth(b.conf.Net.SASL.TokenProvider)
-	}
-	return b.sendAndReceiveSASLPlainAuth()
-}
-
-func (b *Broker) sendAndReceiveSASLHandshake(saslType string, version int16) error {
-	rb := &SaslHandshakeRequest{Mechanism: saslType, Version: version}
-
-	req := &request{correlationID: b.correlationID, clientID: b.conf.ClientID, body: rb}
-	buf, err := encode(req, b.conf.MetricRegistry)
-	if err != nil {
-		return err
-	}
-
-	err = b.conn.SetWriteDeadline(time.Now().Add(b.conf.Net.WriteTimeout))
-	if err != nil {
-		return err
-	}
-
-	requestTime := time.Now()
-	bytes, err := b.conn.Write(buf)
-	b.updateOutgoingCommunicationMetrics(bytes)
-	if err != nil {
-		Logger.Printf("Failed to send SASL handshake %s: %s\n", b.addr, err.Error())
-		return err
-	}
-	b.correlationID++
-	//wait for the response
-	header := make([]byte, 8) // response header
-	_, err = io.ReadFull(b.conn, header)
-	if err != nil {
-		Logger.Printf("Failed to read SASL handshake header : %s\n", err.Error())
-		return err
-	}
-	length := binary.BigEndian.Uint32(header[:4])
-	payload := make([]byte, length-4)
-	n, err := io.ReadFull(b.conn, payload)
-	if err != nil {
-		Logger.Printf("Failed to read SASL handshake payload : %s\n", err.Error())
-		return err
-	}
-	b.updateIncomingCommunicationMetrics(n+8, time.Since(requestTime))
-	res := &SaslHandshakeResponse{}
-	err = versionedDecode(payload, res, 0)
-	if err != nil {
-		Logger.Printf("Failed to parse SASL handshake : %s\n", err.Error())
-		return err
-	}
-	if res.Err != ErrNoError {
-		Logger.Printf("Invalid SASL Mechanism : %s\n", res.Err.Error())
-		return res.Err
-	}
-	Logger.Print("Successful SASL handshake")
-	return nil
-}
-
-// Kafka 0.10.0 plans to support SASL Plain and Kerberos as per PR #812 (KIP-43)/(JIRA KAFKA-3149)
-// Some hosted kafka services such as IBM Message Hub already offer SASL/PLAIN auth with Kafka 0.9
-//
-// In SASL Plain, Kafka expects the auth header to be in the following format
-// Message format (from https://tools.ietf.org/html/rfc4616):
-//
-//   message   = [authzid] UTF8NUL authcid UTF8NUL passwd
-//   authcid   = 1*SAFE ; MUST accept up to 255 octets
-//   authzid   = 1*SAFE ; MUST accept up to 255 octets
-//   passwd    = 1*SAFE ; MUST accept up to 255 octets
-//   UTF8NUL   = %x00 ; UTF-8 encoded NUL character
-//
-//   SAFE      = UTF1 / UTF2 / UTF3 / UTF4
-//                  ;; any UTF-8 encoded Unicode character except NUL
-//
-// When credentials are valid, Kafka returns a 4 byte array of null characters.
-// When credentials are invalid, Kafka closes the connection. This does not seem to be the ideal way
-// of responding to bad credentials but thats how its being done today.
-func (b *Broker) sendAndReceiveSASLPlainAuth() error {
-	if b.conf.Net.SASL.Handshake {
-		handshakeErr := b.sendAndReceiveSASLHandshake(SASLTypePlaintext, SASLHandshakeV0)
-		if handshakeErr != nil {
-			Logger.Printf("Error while performing SASL handshake %s\n", b.addr)
-			return handshakeErr
-		}
-	}
-	length := 1 + len(b.conf.Net.SASL.User) + 1 + len(b.conf.Net.SASL.Password)
-	authBytes := make([]byte, length+4) //4 byte length header + auth data
-	binary.BigEndian.PutUint32(authBytes, uint32(length))
-	copy(authBytes[4:], []byte("\x00"+b.conf.Net.SASL.User+"\x00"+b.conf.Net.SASL.Password))
-
-	err := b.conn.SetWriteDeadline(time.Now().Add(b.conf.Net.WriteTimeout))
-	if err != nil {
-		Logger.Printf("Failed to set write deadline when doing SASL auth with broker %s: %s\n", b.addr, err.Error())
-		return err
-	}
-
-	requestTime := time.Now()
-	bytesWritten, err := b.conn.Write(authBytes)
-	b.updateOutgoingCommunicationMetrics(bytesWritten)
-	if err != nil {
-		Logger.Printf("Failed to write SASL auth header to broker %s: %s\n", b.addr, err.Error())
-		return err
-	}
-
-	header := make([]byte, 4)
-	n, err := io.ReadFull(b.conn, header)
-	b.updateIncomingCommunicationMetrics(n, time.Since(requestTime))
-	// If the credentials are valid, we would get a 4 byte response filled with null characters.
-	// Otherwise, the broker closes the connection and we get an EOF
-	if err != nil {
-		Logger.Printf("Failed to read response while authenticating with SASL to broker %s: %s\n", b.addr, err.Error())
-		return err
-	}
-
-	Logger.Printf("SASL authentication successful with broker %s:%v - %v\n", b.addr, n, header)
-	return nil
-}
-
-// sendAndReceiveSASLOAuth performs the authentication flow as described by KIP-255
-// https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=75968876
-func (b *Broker) sendAndReceiveSASLOAuth(provider AccessTokenProvider) error {
-
-	if err := b.sendAndReceiveSASLHandshake(SASLTypeOAuth, SASLHandshakeV1); err != nil {
-		return err
-	}
-
-	token, err := provider.Token()
-
-	if err != nil {
-		return err
-	}
-
-	requestTime := time.Now()
-
-	correlationID := b.correlationID
-
-	bytesWritten, err := b.sendSASLOAuthBearerClientResponse(token, correlationID)
-
-	if err != nil {
-		return err
-	}
-
-	b.updateOutgoingCommunicationMetrics(bytesWritten)
-
-	b.correlationID++
-
-	bytesRead, err := b.receiveSASLOAuthBearerServerResponse(correlationID)
-
-	if err != nil {
-		return err
-	}
-
-	requestLatency := time.Since(requestTime)
-	b.updateIncomingCommunicationMetrics(bytesRead, requestLatency)
-
-	return nil
-}
-
-// Build SASL/OAUTHBEARER initial client response as described by RFC-7628
-// https://tools.ietf.org/html/rfc7628
-func buildClientInitialResponse(token *AccessToken) ([]byte, error) {
-
-	var ext string
-
-	if token.Extensions != nil && len(token.Extensions) > 0 {
-		if _, ok := token.Extensions[SASLExtKeyAuth]; ok {
-			return []byte{}, fmt.Errorf("The extension `%s` is invalid", SASLExtKeyAuth)
-		}
-		ext = "\x01" + mapToString(token.Extensions, "=", "\x01")
-	}
-
-	resp := []byte(fmt.Sprintf("n,,\x01auth=Bearer %s%s\x01\x01", token.Token, ext))
-
-	return resp, nil
-}
-
-// mapToString returns a list of key-value pairs ordered by key.
-// keyValSep separates the key from the value. elemSep separates each pair.
-func mapToString(extensions map[string]string, keyValSep string, elemSep string) string {
-
-	buf := make([]string, 0, len(extensions))
-
-	for k, v := range extensions {
-		buf = append(buf, k+keyValSep+v)
-	}
-
-	sort.Strings(buf)
-
-	return strings.Join(buf, elemSep)
-}
-
-func (b *Broker) sendSASLOAuthBearerClientResponse(token *AccessToken, correlationID int32) (int, error) {
-
-	initialResp, err := buildClientInitialResponse(token)
-
-	if err != nil {
-		return 0, err
-	}
-
-	rb := &SaslAuthenticateRequest{initialResp}
-
-	req := &request{correlationID: correlationID, clientID: b.conf.ClientID, body: rb}
-
-	buf, err := encode(req, b.conf.MetricRegistry)
-
-	if err != nil {
-		return 0, err
-	}
-
-	if err := b.conn.SetWriteDeadline(time.Now().Add(b.conf.Net.WriteTimeout)); err != nil {
-		return 0, err
-	}
-
-	return b.conn.Write(buf)
-}
-
-func (b *Broker) receiveSASLOAuthBearerServerResponse(correlationID int32) (int, error) {
-
-	buf := make([]byte, 8)
-
-	bytesRead, err := io.ReadFull(b.conn, buf)
-
-	if err != nil {
-		return bytesRead, err
-	}
-
-	header := responseHeader{}
-
-	err = decode(buf, &header)
-
-	if err != nil {
-		return bytesRead, err
-	}
-
-	if header.correlationID != correlationID {
-		return bytesRead, fmt.Errorf("correlation ID didn't match, wanted %d, got %d", b.correlationID, header.correlationID)
-	}
-
-	buf = make([]byte, header.length-4)
-
-	c, err := io.ReadFull(b.conn, buf)
-
-	bytesRead += c
-
-	if err != nil {
-		return bytesRead, err
-	}
-
-	res := &SaslAuthenticateResponse{}
-
-	if err := versionedDecode(buf, res, 0); err != nil {
-		return bytesRead, err
-	}
-
-	if err != nil {
-		return bytesRead, err
-	}
-
-	if res.Err != ErrNoError {
-		return bytesRead, res.Err
-	}
-
-	if len(res.SaslAuthBytes) > 0 {
-		Logger.Printf("Received SASL auth response: %s", res.SaslAuthBytes)
-	}
-
-	return bytesRead, nil
-}
-
-func (b *Broker) updateIncomingCommunicationMetrics(bytes int, requestLatency time.Duration) {
-	b.updateRequestLatencyMetrics(requestLatency)
-	b.responseRate.Mark(1)
-	if b.brokerResponseRate != nil {
-		b.brokerResponseRate.Mark(1)
-	}
-	responseSize := int64(bytes)
-	b.incomingByteRate.Mark(responseSize)
-	if b.brokerIncomingByteRate != nil {
-		b.brokerIncomingByteRate.Mark(responseSize)
-	}
-	b.responseSize.Update(responseSize)
-	if b.brokerResponseSize != nil {
-		b.brokerResponseSize.Update(responseSize)
-	}
-}
-
-func (b *Broker) updateRequestLatencyMetrics(requestLatency time.Duration) {
-	requestLatencyInMs := int64(requestLatency / time.Millisecond)
-	b.requestLatency.Update(requestLatencyInMs)
-	if b.brokerRequestLatency != nil {
-		b.brokerRequestLatency.Update(requestLatencyInMs)
-	}
-}
-
-func (b *Broker) updateOutgoingCommunicationMetrics(bytes int) {
-	b.requestRate.Mark(1)
-	if b.brokerRequestRate != nil {
-		b.brokerRequestRate.Mark(1)
-	}
-	requestSize := int64(bytes)
-	b.outgoingByteRate.Mark(requestSize)
-	if b.brokerOutgoingByteRate != nil {
-		b.brokerOutgoingByteRate.Mark(requestSize)
-	}
-	b.requestSize.Update(requestSize)
-	if b.brokerRequestSize != nil {
-		b.brokerRequestSize.Update(requestSize)
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/client.go b/vendor/gopkg.in/Shopify/sarama.v1/client.go
deleted file mode 100644
index 0016f8f..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/client.go
+++ /dev/null
@@ -1,913 +0,0 @@
-package sarama
-
-import (
-	"math/rand"
-	"sort"
-	"sync"
-	"time"
-)
-
-// Client is a generic Kafka client. It manages connections to one or more Kafka brokers.
-// You MUST call Close() on a client to avoid leaks, it will not be garbage-collected
-// automatically when it passes out of scope. It is safe to share a client amongst many
-// users, however Kafka will process requests from a single client strictly in serial,
-// so it is generally more efficient to use the default one client per producer/consumer.
-type Client interface {
-	// Config returns the Config struct of the client. This struct should not be
-	// altered after it has been created.
-	Config() *Config
-
-	// Controller returns the cluster controller broker. Requires Kafka 0.10 or higher.
-	Controller() (*Broker, error)
-
-	// Brokers returns the current set of active brokers as retrieved from cluster metadata.
-	Brokers() []*Broker
-
-	// Topics returns the set of available topics as retrieved from cluster metadata.
-	Topics() ([]string, error)
-
-	// Partitions returns the sorted list of all partition IDs for the given topic.
-	Partitions(topic string) ([]int32, error)
-
-	// WritablePartitions returns the sorted list of all writable partition IDs for
-	// the given topic, where "writable" means "having a valid leader accepting
-	// writes".
-	WritablePartitions(topic string) ([]int32, error)
-
-	// Leader returns the broker object that is the leader of the current
-	// topic/partition, as determined by querying the cluster metadata.
-	Leader(topic string, partitionID int32) (*Broker, error)
-
-	// Replicas returns the set of all replica IDs for the given partition.
-	Replicas(topic string, partitionID int32) ([]int32, error)
-
-	// InSyncReplicas returns the set of all in-sync replica IDs for the given
-	// partition. In-sync replicas are replicas which are fully caught up with
-	// the partition leader.
-	InSyncReplicas(topic string, partitionID int32) ([]int32, error)
-
-	// RefreshMetadata takes a list of topics and queries the cluster to refresh the
-	// available metadata for those topics. If no topics are provided, it will refresh
-	// metadata for all topics.
-	RefreshMetadata(topics ...string) error
-
-	// GetOffset queries the cluster to get the most recent available offset at the
-	// given time (in milliseconds) on the topic/partition combination.
-	// Time should be OffsetOldest for the earliest available offset,
-	// OffsetNewest for the offset of the message that will be produced next, or a time.
-	GetOffset(topic string, partitionID int32, time int64) (int64, error)
-
-	// Coordinator returns the coordinating broker for a consumer group. It will
-	// return a locally cached value if it's available. You can call
-	// RefreshCoordinator to update the cached value. This function only works on
-	// Kafka 0.8.2 and higher.
-	Coordinator(consumerGroup string) (*Broker, error)
-
-	// RefreshCoordinator retrieves the coordinator for a consumer group and stores it
-	// in local cache. This function only works on Kafka 0.8.2 and higher.
-	RefreshCoordinator(consumerGroup string) error
-
-	// InitProducerID retrieves information required for Idempotent Producer
-	InitProducerID() (*InitProducerIDResponse, error)
-
-	// Close shuts down all broker connections managed by this client. It is required
-	// to call this function before a client object passes out of scope, as it will
-	// otherwise leak memory. You must close any Producers or Consumers using a client
-	// before you close the client.
-	Close() error
-
-	// Closed returns true if the client has already had Close called on it
-	Closed() bool
-}
-
-const (
-	// OffsetNewest stands for the log head offset, i.e. the offset that will be
-	// assigned to the next message that will be produced to the partition. You
-	// can send this to a client's GetOffset method to get this offset, or when
-	// calling ConsumePartition to start consuming new messages.
-	OffsetNewest int64 = -1
-	// OffsetOldest stands for the oldest offset available on the broker for a
-	// partition. You can send this to a client's GetOffset method to get this
-	// offset, or when calling ConsumePartition to start consuming from the
-	// oldest offset that is still available on the broker.
-	OffsetOldest int64 = -2
-)
-
-type client struct {
-	conf           *Config
-	closer, closed chan none // for shutting down background metadata updater
-
-	// the broker addresses given to us through the constructor are not guaranteed to be returned in
-	// the cluster metadata (I *think* it only returns brokers who are currently leading partitions?)
-	// so we store them separately
-	seedBrokers []*Broker
-	deadSeeds   []*Broker
-
-	controllerID   int32                                   // cluster controller broker id
-	brokers        map[int32]*Broker                       // maps broker ids to brokers
-	metadata       map[string]map[int32]*PartitionMetadata // maps topics to partition ids to metadata
-	metadataTopics map[string]none                         // topics that need to collect metadata
-	coordinators   map[string]int32                        // Maps consumer group names to coordinating broker IDs
-
-	// If the number of partitions is large, we can get some churn calling cachedPartitions,
-	// so the result is cached.  It is important to update this value whenever metadata is changed
-	cachedPartitionsResults map[string][maxPartitionIndex][]int32
-
-	lock sync.RWMutex // protects access to the maps that hold cluster state.
-}
-
-// NewClient creates a new Client. It connects to one of the given broker addresses
-// and uses that broker to automatically fetch metadata on the rest of the kafka cluster. If metadata cannot
-// be retrieved from any of the given broker addresses, the client is not created.
-func NewClient(addrs []string, conf *Config) (Client, error) {
-	Logger.Println("Initializing new client")
-
-	if conf == nil {
-		conf = NewConfig()
-	}
-
-	if err := conf.Validate(); err != nil {
-		return nil, err
-	}
-
-	if len(addrs) < 1 {
-		return nil, ConfigurationError("You must provide at least one broker address")
-	}
-
-	client := &client{
-		conf:                    conf,
-		closer:                  make(chan none),
-		closed:                  make(chan none),
-		brokers:                 make(map[int32]*Broker),
-		metadata:                make(map[string]map[int32]*PartitionMetadata),
-		metadataTopics:          make(map[string]none),
-		cachedPartitionsResults: make(map[string][maxPartitionIndex][]int32),
-		coordinators:            make(map[string]int32),
-	}
-
-	random := rand.New(rand.NewSource(time.Now().UnixNano()))
-	for _, index := range random.Perm(len(addrs)) {
-		client.seedBrokers = append(client.seedBrokers, NewBroker(addrs[index]))
-	}
-
-	if conf.Metadata.Full {
-		// do an initial fetch of all cluster metadata by specifying an empty list of topics
-		err := client.RefreshMetadata()
-		switch err {
-		case nil:
-			break
-		case ErrLeaderNotAvailable, ErrReplicaNotAvailable, ErrTopicAuthorizationFailed, ErrClusterAuthorizationFailed:
-			// indicates that maybe part of the cluster is down, but is not fatal to creating the client
-			Logger.Println(err)
-		default:
-			close(client.closed) // we haven't started the background updater yet, so we have to do this manually
-			_ = client.Close()
-			return nil, err
-		}
-	}
-	go withRecover(client.backgroundMetadataUpdater)
-
-	Logger.Println("Successfully initialized new client")
-
-	return client, nil
-}
-
-func (client *client) Config() *Config {
-	return client.conf
-}
-
-func (client *client) Brokers() []*Broker {
-	client.lock.RLock()
-	defer client.lock.RUnlock()
-	brokers := make([]*Broker, 0, len(client.brokers))
-	for _, broker := range client.brokers {
-		brokers = append(brokers, broker)
-	}
-	return brokers
-}
-
-func (client *client) InitProducerID() (*InitProducerIDResponse, error) {
-	var err error
-	for broker := client.any(); broker != nil; broker = client.any() {
-
-		req := &InitProducerIDRequest{}
-
-		response, err := broker.InitProducerID(req)
-		switch err.(type) {
-		case nil:
-			return response, nil
-		default:
-			// some error, remove that broker and try again
-			Logger.Printf("Client got error from broker %d when issuing InitProducerID : %v\n", broker.ID(), err)
-			_ = broker.Close()
-			client.deregisterBroker(broker)
-		}
-	}
-	return nil, err
-}
-
-func (client *client) Close() error {
-	if client.Closed() {
-		// Chances are this is being called from a defer() and the error will go unobserved
-		// so we go ahead and log the event in this case.
-		Logger.Printf("Close() called on already closed client")
-		return ErrClosedClient
-	}
-
-	// shutdown and wait for the background thread before we take the lock, to avoid races
-	close(client.closer)
-	<-client.closed
-
-	client.lock.Lock()
-	defer client.lock.Unlock()
-	Logger.Println("Closing Client")
-
-	for _, broker := range client.brokers {
-		safeAsyncClose(broker)
-	}
-
-	for _, broker := range client.seedBrokers {
-		safeAsyncClose(broker)
-	}
-
-	client.brokers = nil
-	client.metadata = nil
-	client.metadataTopics = nil
-
-	return nil
-}
-
-func (client *client) Closed() bool {
-	return client.brokers == nil
-}
-
-func (client *client) Topics() ([]string, error) {
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	client.lock.RLock()
-	defer client.lock.RUnlock()
-
-	ret := make([]string, 0, len(client.metadata))
-	for topic := range client.metadata {
-		ret = append(ret, topic)
-	}
-
-	return ret, nil
-}
-
-func (client *client) MetadataTopics() ([]string, error) {
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	client.lock.RLock()
-	defer client.lock.RUnlock()
-
-	ret := make([]string, 0, len(client.metadataTopics))
-	for topic := range client.metadataTopics {
-		ret = append(ret, topic)
-	}
-
-	return ret, nil
-}
-
-func (client *client) Partitions(topic string) ([]int32, error) {
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	partitions := client.cachedPartitions(topic, allPartitions)
-
-	if len(partitions) == 0 {
-		err := client.RefreshMetadata(topic)
-		if err != nil {
-			return nil, err
-		}
-		partitions = client.cachedPartitions(topic, allPartitions)
-	}
-
-	if partitions == nil {
-		return nil, ErrUnknownTopicOrPartition
-	}
-
-	return partitions, nil
-}
-
-func (client *client) WritablePartitions(topic string) ([]int32, error) {
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	partitions := client.cachedPartitions(topic, writablePartitions)
-
-	// len==0 catches when it's nil (no such topic) and the odd case when every single
-	// partition is undergoing leader election simultaneously. Callers have to be able to handle
-	// this function returning an empty slice (which is a valid return value) but catching it
-	// here the first time (note we *don't* catch it below where we return ErrUnknownTopicOrPartition) triggers
-	// a metadata refresh as a nicety so callers can just try again and don't have to manually
-	// trigger a refresh (otherwise they'd just keep getting a stale cached copy).
-	if len(partitions) == 0 {
-		err := client.RefreshMetadata(topic)
-		if err != nil {
-			return nil, err
-		}
-		partitions = client.cachedPartitions(topic, writablePartitions)
-	}
-
-	if partitions == nil {
-		return nil, ErrUnknownTopicOrPartition
-	}
-
-	return partitions, nil
-}
-
-func (client *client) Replicas(topic string, partitionID int32) ([]int32, error) {
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	metadata := client.cachedMetadata(topic, partitionID)
-
-	if metadata == nil {
-		err := client.RefreshMetadata(topic)
-		if err != nil {
-			return nil, err
-		}
-		metadata = client.cachedMetadata(topic, partitionID)
-	}
-
-	if metadata == nil {
-		return nil, ErrUnknownTopicOrPartition
-	}
-
-	if metadata.Err == ErrReplicaNotAvailable {
-		return dupInt32Slice(metadata.Replicas), metadata.Err
-	}
-	return dupInt32Slice(metadata.Replicas), nil
-}
-
-func (client *client) InSyncReplicas(topic string, partitionID int32) ([]int32, error) {
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	metadata := client.cachedMetadata(topic, partitionID)
-
-	if metadata == nil {
-		err := client.RefreshMetadata(topic)
-		if err != nil {
-			return nil, err
-		}
-		metadata = client.cachedMetadata(topic, partitionID)
-	}
-
-	if metadata == nil {
-		return nil, ErrUnknownTopicOrPartition
-	}
-
-	if metadata.Err == ErrReplicaNotAvailable {
-		return dupInt32Slice(metadata.Isr), metadata.Err
-	}
-	return dupInt32Slice(metadata.Isr), nil
-}
-
-func (client *client) Leader(topic string, partitionID int32) (*Broker, error) {
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	leader, err := client.cachedLeader(topic, partitionID)
-
-	if leader == nil {
-		err = client.RefreshMetadata(topic)
-		if err != nil {
-			return nil, err
-		}
-		leader, err = client.cachedLeader(topic, partitionID)
-	}
-
-	return leader, err
-}
-
-func (client *client) RefreshMetadata(topics ...string) error {
-	if client.Closed() {
-		return ErrClosedClient
-	}
-
-	// Prior to 0.8.2, Kafka will throw exceptions on an empty topic and not return a proper
-	// error. This handles the case by returning an error instead of sending it
-	// off to Kafka. See: https://github.com/Shopify/sarama/pull/38#issuecomment-26362310
-	for _, topic := range topics {
-		if len(topic) == 0 {
-			return ErrInvalidTopic // this is the error that 0.8.2 and later correctly return
-		}
-	}
-
-	return client.tryRefreshMetadata(topics, client.conf.Metadata.Retry.Max)
-}
-
-func (client *client) GetOffset(topic string, partitionID int32, time int64) (int64, error) {
-	if client.Closed() {
-		return -1, ErrClosedClient
-	}
-
-	offset, err := client.getOffset(topic, partitionID, time)
-
-	if err != nil {
-		if err := client.RefreshMetadata(topic); err != nil {
-			return -1, err
-		}
-		return client.getOffset(topic, partitionID, time)
-	}
-
-	return offset, err
-}
-
-func (client *client) Controller() (*Broker, error) {
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	if !client.conf.Version.IsAtLeast(V0_10_0_0) {
-		return nil, ErrUnsupportedVersion
-	}
-
-	controller := client.cachedController()
-	if controller == nil {
-		if err := client.refreshMetadata(); err != nil {
-			return nil, err
-		}
-		controller = client.cachedController()
-	}
-
-	if controller == nil {
-		return nil, ErrControllerNotAvailable
-	}
-
-	_ = controller.Open(client.conf)
-	return controller, nil
-}
-
-func (client *client) Coordinator(consumerGroup string) (*Broker, error) {
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	coordinator := client.cachedCoordinator(consumerGroup)
-
-	if coordinator == nil {
-		if err := client.RefreshCoordinator(consumerGroup); err != nil {
-			return nil, err
-		}
-		coordinator = client.cachedCoordinator(consumerGroup)
-	}
-
-	if coordinator == nil {
-		return nil, ErrConsumerCoordinatorNotAvailable
-	}
-
-	_ = coordinator.Open(client.conf)
-	return coordinator, nil
-}
-
-func (client *client) RefreshCoordinator(consumerGroup string) error {
-	if client.Closed() {
-		return ErrClosedClient
-	}
-
-	response, err := client.getConsumerMetadata(consumerGroup, client.conf.Metadata.Retry.Max)
-	if err != nil {
-		return err
-	}
-
-	client.lock.Lock()
-	defer client.lock.Unlock()
-	client.registerBroker(response.Coordinator)
-	client.coordinators[consumerGroup] = response.Coordinator.ID()
-	return nil
-}
-
-// private broker management helpers
-
-// registerBroker makes sure a broker received by a Metadata or Coordinator request is registered
-// in the brokers map. It returns the broker that is registered, which may be the provided broker,
-// or a previously registered Broker instance. You must hold the write lock before calling this function.
-func (client *client) registerBroker(broker *Broker) {
-	if client.brokers[broker.ID()] == nil {
-		client.brokers[broker.ID()] = broker
-		Logger.Printf("client/brokers registered new broker #%d at %s", broker.ID(), broker.Addr())
-	} else if broker.Addr() != client.brokers[broker.ID()].Addr() {
-		safeAsyncClose(client.brokers[broker.ID()])
-		client.brokers[broker.ID()] = broker
-		Logger.Printf("client/brokers replaced registered broker #%d with %s", broker.ID(), broker.Addr())
-	}
-}
-
-// deregisterBroker removes a broker from the seedsBroker list, and if it's
-// not the seedbroker, removes it from brokers map completely.
-func (client *client) deregisterBroker(broker *Broker) {
-	client.lock.Lock()
-	defer client.lock.Unlock()
-
-	if len(client.seedBrokers) > 0 && broker == client.seedBrokers[0] {
-		client.deadSeeds = append(client.deadSeeds, broker)
-		client.seedBrokers = client.seedBrokers[1:]
-	} else {
-		// we do this so that our loop in `tryRefreshMetadata` doesn't go on forever,
-		// but we really shouldn't have to; once that loop is made better this case can be
-		// removed, and the function generally can be renamed from `deregisterBroker` to
-		// `nextSeedBroker` or something
-		Logger.Printf("client/brokers deregistered broker #%d at %s", broker.ID(), broker.Addr())
-		delete(client.brokers, broker.ID())
-	}
-}
-
-func (client *client) resurrectDeadBrokers() {
-	client.lock.Lock()
-	defer client.lock.Unlock()
-
-	Logger.Printf("client/brokers resurrecting %d dead seed brokers", len(client.deadSeeds))
-	client.seedBrokers = append(client.seedBrokers, client.deadSeeds...)
-	client.deadSeeds = nil
-}
-
-func (client *client) any() *Broker {
-	client.lock.RLock()
-	defer client.lock.RUnlock()
-
-	if len(client.seedBrokers) > 0 {
-		_ = client.seedBrokers[0].Open(client.conf)
-		return client.seedBrokers[0]
-	}
-
-	// not guaranteed to be random *or* deterministic
-	for _, broker := range client.brokers {
-		_ = broker.Open(client.conf)
-		return broker
-	}
-
-	return nil
-}
-
-// private caching/lazy metadata helpers
-
-type partitionType int
-
-const (
-	allPartitions partitionType = iota
-	writablePartitions
-	// If you add any more types, update the partition cache in update()
-
-	// Ensure this is the last partition type value
-	maxPartitionIndex
-)
-
-func (client *client) cachedMetadata(topic string, partitionID int32) *PartitionMetadata {
-	client.lock.RLock()
-	defer client.lock.RUnlock()
-
-	partitions := client.metadata[topic]
-	if partitions != nil {
-		return partitions[partitionID]
-	}
-
-	return nil
-}
-
-func (client *client) cachedPartitions(topic string, partitionSet partitionType) []int32 {
-	client.lock.RLock()
-	defer client.lock.RUnlock()
-
-	partitions, exists := client.cachedPartitionsResults[topic]
-
-	if !exists {
-		return nil
-	}
-	return partitions[partitionSet]
-}
-
-func (client *client) setPartitionCache(topic string, partitionSet partitionType) []int32 {
-	partitions := client.metadata[topic]
-
-	if partitions == nil {
-		return nil
-	}
-
-	ret := make([]int32, 0, len(partitions))
-	for _, partition := range partitions {
-		if partitionSet == writablePartitions && partition.Err == ErrLeaderNotAvailable {
-			continue
-		}
-		ret = append(ret, partition.ID)
-	}
-
-	sort.Sort(int32Slice(ret))
-	return ret
-}
-
-func (client *client) cachedLeader(topic string, partitionID int32) (*Broker, error) {
-	client.lock.RLock()
-	defer client.lock.RUnlock()
-
-	partitions := client.metadata[topic]
-	if partitions != nil {
-		metadata, ok := partitions[partitionID]
-		if ok {
-			if metadata.Err == ErrLeaderNotAvailable {
-				return nil, ErrLeaderNotAvailable
-			}
-			b := client.brokers[metadata.Leader]
-			if b == nil {
-				return nil, ErrLeaderNotAvailable
-			}
-			_ = b.Open(client.conf)
-			return b, nil
-		}
-	}
-
-	return nil, ErrUnknownTopicOrPartition
-}
-
-func (client *client) getOffset(topic string, partitionID int32, time int64) (int64, error) {
-	broker, err := client.Leader(topic, partitionID)
-	if err != nil {
-		return -1, err
-	}
-
-	request := &OffsetRequest{}
-	if client.conf.Version.IsAtLeast(V0_10_1_0) {
-		request.Version = 1
-	}
-	request.AddBlock(topic, partitionID, time, 1)
-
-	response, err := broker.GetAvailableOffsets(request)
-	if err != nil {
-		_ = broker.Close()
-		return -1, err
-	}
-
-	block := response.GetBlock(topic, partitionID)
-	if block == nil {
-		_ = broker.Close()
-		return -1, ErrIncompleteResponse
-	}
-	if block.Err != ErrNoError {
-		return -1, block.Err
-	}
-	if len(block.Offsets) != 1 {
-		return -1, ErrOffsetOutOfRange
-	}
-
-	return block.Offsets[0], nil
-}
-
-// core metadata update logic
-
-func (client *client) backgroundMetadataUpdater() {
-	defer close(client.closed)
-
-	if client.conf.Metadata.RefreshFrequency == time.Duration(0) {
-		return
-	}
-
-	ticker := time.NewTicker(client.conf.Metadata.RefreshFrequency)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-ticker.C:
-			if err := client.refreshMetadata(); err != nil {
-				Logger.Println("Client background metadata update:", err)
-			}
-		case <-client.closer:
-			return
-		}
-	}
-}
-
-func (client *client) refreshMetadata() error {
-	topics := []string{}
-
-	if !client.conf.Metadata.Full {
-		if specificTopics, err := client.MetadataTopics(); err != nil {
-			return err
-		} else if len(specificTopics) == 0 {
-			return ErrNoTopicsToUpdateMetadata
-		} else {
-			topics = specificTopics
-		}
-	}
-
-	if err := client.RefreshMetadata(topics...); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (client *client) tryRefreshMetadata(topics []string, attemptsRemaining int) error {
-	retry := func(err error) error {
-		if attemptsRemaining > 0 {
-			backoff := client.computeBackoff(attemptsRemaining)
-			Logger.Printf("client/metadata retrying after %dms... (%d attempts remaining)\n", client.conf.Metadata.Retry.Backoff/time.Millisecond, attemptsRemaining)
-			if backoff > 0 {
-				time.Sleep(backoff)
-			}
-			return client.tryRefreshMetadata(topics, attemptsRemaining-1)
-		}
-		return err
-	}
-
-	for broker := client.any(); broker != nil; broker = client.any() {
-		if len(topics) > 0 {
-			Logger.Printf("client/metadata fetching metadata for %v from broker %s\n", topics, broker.addr)
-		} else {
-			Logger.Printf("client/metadata fetching metadata for all topics from broker %s\n", broker.addr)
-		}
-
-		req := &MetadataRequest{Topics: topics}
-		if client.conf.Version.IsAtLeast(V0_10_0_0) {
-			req.Version = 1
-		}
-		response, err := broker.GetMetadata(req)
-
-		switch err.(type) {
-		case nil:
-			allKnownMetaData := len(topics) == 0
-			// valid response, use it
-			shouldRetry, err := client.updateMetadata(response, allKnownMetaData)
-			if shouldRetry {
-				Logger.Println("client/metadata found some partitions to be leaderless")
-				return retry(err) // note: err can be nil
-			}
-			return err
-
-		case PacketEncodingError:
-			// didn't even send, return the error
-			return err
-		default:
-			// some other error, remove that broker and try again
-			Logger.Printf("client/metadata got error from broker %d while fetching metadata: %v\n", broker.ID(), err)
-			_ = broker.Close()
-			client.deregisterBroker(broker)
-		}
-	}
-
-	Logger.Println("client/metadata no available broker to send metadata request to")
-	client.resurrectDeadBrokers()
-	return retry(ErrOutOfBrokers)
-}
-
-// if no fatal error, returns a list of topics that need retrying due to ErrLeaderNotAvailable
-func (client *client) updateMetadata(data *MetadataResponse, allKnownMetaData bool) (retry bool, err error) {
-	client.lock.Lock()
-	defer client.lock.Unlock()
-
-	// For all the brokers we received:
-	// - if it is a new ID, save it
-	// - if it is an existing ID, but the address we have is stale, discard the old one and save it
-	// - otherwise ignore it, replacing our existing one would just bounce the connection
-	for _, broker := range data.Brokers {
-		client.registerBroker(broker)
-	}
-
-	client.controllerID = data.ControllerID
-
-	if allKnownMetaData {
-		client.metadata = make(map[string]map[int32]*PartitionMetadata)
-		client.metadataTopics = make(map[string]none)
-		client.cachedPartitionsResults = make(map[string][maxPartitionIndex][]int32)
-	}
-	for _, topic := range data.Topics {
-		// topics must be added firstly to `metadataTopics` to guarantee that all
-		// requested topics must be recorded to keep them trackable for periodically
-		// metadata refresh.
-		if _, exists := client.metadataTopics[topic.Name]; !exists {
-			client.metadataTopics[topic.Name] = none{}
-		}
-		delete(client.metadata, topic.Name)
-		delete(client.cachedPartitionsResults, topic.Name)
-
-		switch topic.Err {
-		case ErrNoError:
-			break
-		case ErrInvalidTopic, ErrTopicAuthorizationFailed: // don't retry, don't store partial results
-			err = topic.Err
-			continue
-		case ErrUnknownTopicOrPartition: // retry, do not store partial partition results
-			err = topic.Err
-			retry = true
-			continue
-		case ErrLeaderNotAvailable: // retry, but store partial partition results
-			retry = true
-			break
-		default: // don't retry, don't store partial results
-			Logger.Printf("Unexpected topic-level metadata error: %s", topic.Err)
-			err = topic.Err
-			continue
-		}
-
-		client.metadata[topic.Name] = make(map[int32]*PartitionMetadata, len(topic.Partitions))
-		for _, partition := range topic.Partitions {
-			client.metadata[topic.Name][partition.ID] = partition
-			if partition.Err == ErrLeaderNotAvailable {
-				retry = true
-			}
-		}
-
-		var partitionCache [maxPartitionIndex][]int32
-		partitionCache[allPartitions] = client.setPartitionCache(topic.Name, allPartitions)
-		partitionCache[writablePartitions] = client.setPartitionCache(topic.Name, writablePartitions)
-		client.cachedPartitionsResults[topic.Name] = partitionCache
-	}
-
-	return
-}
-
-func (client *client) cachedCoordinator(consumerGroup string) *Broker {
-	client.lock.RLock()
-	defer client.lock.RUnlock()
-	if coordinatorID, ok := client.coordinators[consumerGroup]; ok {
-		return client.brokers[coordinatorID]
-	}
-	return nil
-}
-
-func (client *client) cachedController() *Broker {
-	client.lock.RLock()
-	defer client.lock.RUnlock()
-
-	return client.brokers[client.controllerID]
-}
-
-func (client *client) computeBackoff(attemptsRemaining int) time.Duration {
-	if client.conf.Metadata.Retry.BackoffFunc != nil {
-		maxRetries := client.conf.Metadata.Retry.Max
-		retries := maxRetries - attemptsRemaining
-		return client.conf.Metadata.Retry.BackoffFunc(retries, maxRetries)
-	} else {
-		return client.conf.Metadata.Retry.Backoff
-	}
-}
-
-func (client *client) getConsumerMetadata(consumerGroup string, attemptsRemaining int) (*FindCoordinatorResponse, error) {
-	retry := func(err error) (*FindCoordinatorResponse, error) {
-		if attemptsRemaining > 0 {
-			backoff := client.computeBackoff(attemptsRemaining)
-			Logger.Printf("client/coordinator retrying after %dms... (%d attempts remaining)\n", backoff/time.Millisecond, attemptsRemaining)
-			time.Sleep(backoff)
-			return client.getConsumerMetadata(consumerGroup, attemptsRemaining-1)
-		}
-		return nil, err
-	}
-
-	for broker := client.any(); broker != nil; broker = client.any() {
-		Logger.Printf("client/coordinator requesting coordinator for consumergroup %s from %s\n", consumerGroup, broker.Addr())
-
-		request := new(FindCoordinatorRequest)
-		request.CoordinatorKey = consumerGroup
-		request.CoordinatorType = CoordinatorGroup
-
-		response, err := broker.FindCoordinator(request)
-
-		if err != nil {
-			Logger.Printf("client/coordinator request to broker %s failed: %s\n", broker.Addr(), err)
-
-			switch err.(type) {
-			case PacketEncodingError:
-				return nil, err
-			default:
-				_ = broker.Close()
-				client.deregisterBroker(broker)
-				continue
-			}
-		}
-
-		switch response.Err {
-		case ErrNoError:
-			Logger.Printf("client/coordinator coordinator for consumergroup %s is #%d (%s)\n", consumerGroup, response.Coordinator.ID(), response.Coordinator.Addr())
-			return response, nil
-
-		case ErrConsumerCoordinatorNotAvailable:
-			Logger.Printf("client/coordinator coordinator for consumer group %s is not available\n", consumerGroup)
-
-			// This is very ugly, but this scenario will only happen once per cluster.
-			// The __consumer_offsets topic only has to be created one time.
-			// The number of partitions not configurable, but partition 0 should always exist.
-			if _, err := client.Leader("__consumer_offsets", 0); err != nil {
-				Logger.Printf("client/coordinator the __consumer_offsets topic is not initialized completely yet. Waiting 2 seconds...\n")
-				time.Sleep(2 * time.Second)
-			}
-
-			return retry(ErrConsumerCoordinatorNotAvailable)
-		default:
-			return nil, response.Err
-		}
-	}
-
-	Logger.Println("client/coordinator no available broker to send consumer metadata request to")
-	client.resurrectDeadBrokers()
-	return retry(ErrOutOfBrokers)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/compress.go b/vendor/gopkg.in/Shopify/sarama.v1/compress.go
deleted file mode 100644
index 94b716e..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/compress.go
+++ /dev/null
@@ -1,75 +0,0 @@
-package sarama
-
-import (
-	"bytes"
-	"compress/gzip"
-	"fmt"
-	"sync"
-
-	"github.com/eapache/go-xerial-snappy"
-	"github.com/pierrec/lz4"
-)
-
-var (
-	lz4WriterPool = sync.Pool{
-		New: func() interface{} {
-			return lz4.NewWriter(nil)
-		},
-	}
-
-	gzipWriterPool = sync.Pool{
-		New: func() interface{} {
-			return gzip.NewWriter(nil)
-		},
-	}
-)
-
-func compress(cc CompressionCodec, level int, data []byte) ([]byte, error) {
-	switch cc {
-	case CompressionNone:
-		return data, nil
-	case CompressionGZIP:
-		var (
-			err    error
-			buf    bytes.Buffer
-			writer *gzip.Writer
-		)
-		if level != CompressionLevelDefault {
-			writer, err = gzip.NewWriterLevel(&buf, level)
-			if err != nil {
-				return nil, err
-			}
-		} else {
-			writer = gzipWriterPool.Get().(*gzip.Writer)
-			defer gzipWriterPool.Put(writer)
-			writer.Reset(&buf)
-		}
-		if _, err := writer.Write(data); err != nil {
-			return nil, err
-		}
-		if err := writer.Close(); err != nil {
-			return nil, err
-		}
-		return buf.Bytes(), nil
-	case CompressionSnappy:
-		return snappy.Encode(data), nil
-	case CompressionLZ4:
-		writer := lz4WriterPool.Get().(*lz4.Writer)
-		defer lz4WriterPool.Put(writer)
-
-		var buf bytes.Buffer
-		writer.Reset(&buf)
-
-		if _, err := writer.Write(data); err != nil {
-			return nil, err
-		}
-		if err := writer.Close(); err != nil {
-			return nil, err
-		}
-		return buf.Bytes(), nil
-	case CompressionZSTD:
-		return zstdCompressLevel(nil, data, level)
-	default:
-		return nil, PacketEncodingError{fmt.Sprintf("unsupported compression codec (%d)", cc)}
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/config.go b/vendor/gopkg.in/Shopify/sarama.v1/config.go
deleted file mode 100644
index 9495b7f..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/config.go
+++ /dev/null
@@ -1,616 +0,0 @@
-package sarama
-
-import (
-	"compress/gzip"
-	"crypto/tls"
-	"fmt"
-	"io/ioutil"
-	"net"
-	"regexp"
-	"time"
-
-	"github.com/rcrowley/go-metrics"
-)
-
-const defaultClientID = "sarama"
-
-var validID = regexp.MustCompile(`\A[A-Za-z0-9._-]+\z`)
-
-// Config is used to pass multiple configuration options to Sarama's constructors.
-type Config struct {
-	// Admin is the namespace for ClusterAdmin properties used by the administrative Kafka client.
-	Admin struct {
-		// The maximum duration the administrative Kafka client will wait for ClusterAdmin operations,
-		// including topics, brokers, configurations and ACLs (defaults to 3 seconds).
-		Timeout time.Duration
-	}
-
-	// Net is the namespace for network-level properties used by the Broker, and
-	// shared by the Client/Producer/Consumer.
-	Net struct {
-		// How many outstanding requests a connection is allowed to have before
-		// sending on it blocks (default 5).
-		MaxOpenRequests int
-
-		// All three of the below configurations are similar to the
-		// `socket.timeout.ms` setting in JVM kafka. All of them default
-		// to 30 seconds.
-		DialTimeout  time.Duration // How long to wait for the initial connection.
-		ReadTimeout  time.Duration // How long to wait for a response.
-		WriteTimeout time.Duration // How long to wait for a transmit.
-
-		TLS struct {
-			// Whether or not to use TLS when connecting to the broker
-			// (defaults to false).
-			Enable bool
-			// The TLS configuration to use for secure connections if
-			// enabled (defaults to nil).
-			Config *tls.Config
-		}
-
-		// SASL based authentication with broker. While there are multiple SASL authentication methods
-		// the current implementation is limited to plaintext (SASL/PLAIN) authentication
-		SASL struct {
-			// Whether or not to use SASL authentication when connecting to the broker
-			// (defaults to false).
-			Enable bool
-			// SASLMechanism is the name of the enabled SASL mechanism.
-			// Possible values: OAUTHBEARER, PLAIN (defaults to PLAIN).
-			Mechanism SASLMechanism
-			// Whether or not to send the Kafka SASL handshake first if enabled
-			// (defaults to true). You should only set this to false if you're using
-			// a non-Kafka SASL proxy.
-			Handshake bool
-			//username and password for SASL/PLAIN authentication
-			User     string
-			Password string
-			// TokenProvider is a user-defined callback for generating
-			// access tokens for SASL/OAUTHBEARER auth. See the
-			// AccessTokenProvider interface docs for proper implementation
-			// guidelines.
-			TokenProvider AccessTokenProvider
-		}
-
-		// KeepAlive specifies the keep-alive period for an active network connection.
-		// If zero, keep-alives are disabled. (default is 0: disabled).
-		KeepAlive time.Duration
-
-		// LocalAddr is the local address to use when dialing an
-		// address. The address must be of a compatible type for the
-		// network being dialed.
-		// If nil, a local address is automatically chosen.
-		LocalAddr net.Addr
-	}
-
-	// Metadata is the namespace for metadata management properties used by the
-	// Client, and shared by the Producer/Consumer.
-	Metadata struct {
-		Retry struct {
-			// The total number of times to retry a metadata request when the
-			// cluster is in the middle of a leader election (default 3).
-			Max int
-			// How long to wait for leader election to occur before retrying
-			// (default 250ms). Similar to the JVM's `retry.backoff.ms`.
-			Backoff time.Duration
-			// Called to compute backoff time dynamically. Useful for implementing
-			// more sophisticated backoff strategies. This takes precedence over
-			// `Backoff` if set.
-			BackoffFunc func(retries, maxRetries int) time.Duration
-		}
-		// How frequently to refresh the cluster metadata in the background.
-		// Defaults to 10 minutes. Set to 0 to disable. Similar to
-		// `topic.metadata.refresh.interval.ms` in the JVM version.
-		RefreshFrequency time.Duration
-
-		// Whether to maintain a full set of metadata for all topics, or just
-		// the minimal set that has been necessary so far. The full set is simpler
-		// and usually more convenient, but can take up a substantial amount of
-		// memory if you have many topics and partitions. Defaults to true.
-		Full bool
-	}
-
-	// Producer is the namespace for configuration related to producing messages,
-	// used by the Producer.
-	Producer struct {
-		// The maximum permitted size of a message (defaults to 1000000). Should be
-		// set equal to or smaller than the broker's `message.max.bytes`.
-		MaxMessageBytes int
-		// The level of acknowledgement reliability needed from the broker (defaults
-		// to WaitForLocal). Equivalent to the `request.required.acks` setting of the
-		// JVM producer.
-		RequiredAcks RequiredAcks
-		// The maximum duration the broker will wait the receipt of the number of
-		// RequiredAcks (defaults to 10 seconds). This is only relevant when
-		// RequiredAcks is set to WaitForAll or a number > 1. Only supports
-		// millisecond resolution, nanoseconds will be truncated. Equivalent to
-		// the JVM producer's `request.timeout.ms` setting.
-		Timeout time.Duration
-		// The type of compression to use on messages (defaults to no compression).
-		// Similar to `compression.codec` setting of the JVM producer.
-		Compression CompressionCodec
-		// The level of compression to use on messages. The meaning depends
-		// on the actual compression type used and defaults to default compression
-		// level for the codec.
-		CompressionLevel int
-		// Generates partitioners for choosing the partition to send messages to
-		// (defaults to hashing the message key). Similar to the `partitioner.class`
-		// setting for the JVM producer.
-		Partitioner PartitionerConstructor
-		// If enabled, the producer will ensure that exactly one copy of each message is
-		// written.
-		Idempotent bool
-
-		// Return specifies what channels will be populated. If they are set to true,
-		// you must read from the respective channels to prevent deadlock. If,
-		// however, this config is used to create a `SyncProducer`, both must be set
-		// to true and you shall not read from the channels since the producer does
-		// this internally.
-		Return struct {
-			// If enabled, successfully delivered messages will be returned on the
-			// Successes channel (default disabled).
-			Successes bool
-
-			// If enabled, messages that failed to deliver will be returned on the
-			// Errors channel, including error (default enabled).
-			Errors bool
-		}
-
-		// The following config options control how often messages are batched up and
-		// sent to the broker. By default, messages are sent as fast as possible, and
-		// all messages received while the current batch is in-flight are placed
-		// into the subsequent batch.
-		Flush struct {
-			// The best-effort number of bytes needed to trigger a flush. Use the
-			// global sarama.MaxRequestSize to set a hard upper limit.
-			Bytes int
-			// The best-effort number of messages needed to trigger a flush. Use
-			// `MaxMessages` to set a hard upper limit.
-			Messages int
-			// The best-effort frequency of flushes. Equivalent to
-			// `queue.buffering.max.ms` setting of JVM producer.
-			Frequency time.Duration
-			// The maximum number of messages the producer will send in a single
-			// broker request. Defaults to 0 for unlimited. Similar to
-			// `queue.buffering.max.messages` in the JVM producer.
-			MaxMessages int
-		}
-
-		Retry struct {
-			// The total number of times to retry sending a message (default 3).
-			// Similar to the `message.send.max.retries` setting of the JVM producer.
-			Max int
-			// How long to wait for the cluster to settle between retries
-			// (default 100ms). Similar to the `retry.backoff.ms` setting of the
-			// JVM producer.
-			Backoff time.Duration
-			// Called to compute backoff time dynamically. Useful for implementing
-			// more sophisticated backoff strategies. This takes precedence over
-			// `Backoff` if set.
-			BackoffFunc func(retries, maxRetries int) time.Duration
-		}
-	}
-
-	// Consumer is the namespace for configuration related to consuming messages,
-	// used by the Consumer.
-	Consumer struct {
-
-		// Group is the namespace for configuring consumer group.
-		Group struct {
-			Session struct {
-				// The timeout used to detect consumer failures when using Kafka's group management facility.
-				// The consumer sends periodic heartbeats to indicate its liveness to the broker.
-				// If no heartbeats are received by the broker before the expiration of this session timeout,
-				// then the broker will remove this consumer from the group and initiate a rebalance.
-				// Note that the value must be in the allowable range as configured in the broker configuration
-				// by `group.min.session.timeout.ms` and `group.max.session.timeout.ms` (default 10s)
-				Timeout time.Duration
-			}
-			Heartbeat struct {
-				// The expected time between heartbeats to the consumer coordinator when using Kafka's group
-				// management facilities. Heartbeats are used to ensure that the consumer's session stays active and
-				// to facilitate rebalancing when new consumers join or leave the group.
-				// The value must be set lower than Consumer.Group.Session.Timeout, but typically should be set no
-				// higher than 1/3 of that value.
-				// It can be adjusted even lower to control the expected time for normal rebalances (default 3s)
-				Interval time.Duration
-			}
-			Rebalance struct {
-				// Strategy for allocating topic partitions to members (default BalanceStrategyRange)
-				Strategy BalanceStrategy
-				// The maximum allowed time for each worker to join the group once a rebalance has begun.
-				// This is basically a limit on the amount of time needed for all tasks to flush any pending
-				// data and commit offsets. If the timeout is exceeded, then the worker will be removed from
-				// the group, which will cause offset commit failures (default 60s).
-				Timeout time.Duration
-
-				Retry struct {
-					// When a new consumer joins a consumer group the set of consumers attempt to "rebalance"
-					// the load to assign partitions to each consumer. If the set of consumers changes while
-					// this assignment is taking place the rebalance will fail and retry. This setting controls
-					// the maximum number of attempts before giving up (default 4).
-					Max int
-					// Backoff time between retries during rebalance (default 2s)
-					Backoff time.Duration
-				}
-			}
-			Member struct {
-				// Custom metadata to include when joining the group. The user data for all joined members
-				// can be retrieved by sending a DescribeGroupRequest to the broker that is the
-				// coordinator for the group.
-				UserData []byte
-			}
-		}
-
-		Retry struct {
-			// How long to wait after a failing to read from a partition before
-			// trying again (default 2s).
-			Backoff time.Duration
-			// Called to compute backoff time dynamically. Useful for implementing
-			// more sophisticated backoff strategies. This takes precedence over
-			// `Backoff` if set.
-			BackoffFunc func(retries int) time.Duration
-		}
-
-		// Fetch is the namespace for controlling how many bytes are retrieved by any
-		// given request.
-		Fetch struct {
-			// The minimum number of message bytes to fetch in a request - the broker
-			// will wait until at least this many are available. The default is 1,
-			// as 0 causes the consumer to spin when no messages are available.
-			// Equivalent to the JVM's `fetch.min.bytes`.
-			Min int32
-			// The default number of message bytes to fetch from the broker in each
-			// request (default 1MB). This should be larger than the majority of
-			// your messages, or else the consumer will spend a lot of time
-			// negotiating sizes and not actually consuming. Similar to the JVM's
-			// `fetch.message.max.bytes`.
-			Default int32
-			// The maximum number of message bytes to fetch from the broker in a
-			// single request. Messages larger than this will return
-			// ErrMessageTooLarge and will not be consumable, so you must be sure
-			// this is at least as large as your largest message. Defaults to 0
-			// (no limit). Similar to the JVM's `fetch.message.max.bytes`. The
-			// global `sarama.MaxResponseSize` still applies.
-			Max int32
-		}
-		// The maximum amount of time the broker will wait for Consumer.Fetch.Min
-		// bytes to become available before it returns fewer than that anyways. The
-		// default is 250ms, since 0 causes the consumer to spin when no events are
-		// available. 100-500ms is a reasonable range for most cases. Kafka only
-		// supports precision up to milliseconds; nanoseconds will be truncated.
-		// Equivalent to the JVM's `fetch.wait.max.ms`.
-		MaxWaitTime time.Duration
-
-		// The maximum amount of time the consumer expects a message takes to
-		// process for the user. If writing to the Messages channel takes longer
-		// than this, that partition will stop fetching more messages until it
-		// can proceed again.
-		// Note that, since the Messages channel is buffered, the actual grace time is
-		// (MaxProcessingTime * ChanneBufferSize). Defaults to 100ms.
-		// If a message is not written to the Messages channel between two ticks
-		// of the expiryTicker then a timeout is detected.
-		// Using a ticker instead of a timer to detect timeouts should typically
-		// result in many fewer calls to Timer functions which may result in a
-		// significant performance improvement if many messages are being sent
-		// and timeouts are infrequent.
-		// The disadvantage of using a ticker instead of a timer is that
-		// timeouts will be less accurate. That is, the effective timeout could
-		// be between `MaxProcessingTime` and `2 * MaxProcessingTime`. For
-		// example, if `MaxProcessingTime` is 100ms then a delay of 180ms
-		// between two messages being sent may not be recognized as a timeout.
-		MaxProcessingTime time.Duration
-
-		// Return specifies what channels will be populated. If they are set to true,
-		// you must read from them to prevent deadlock.
-		Return struct {
-			// If enabled, any errors that occurred while consuming are returned on
-			// the Errors channel (default disabled).
-			Errors bool
-		}
-
-		// Offsets specifies configuration for how and when to commit consumed
-		// offsets. This currently requires the manual use of an OffsetManager
-		// but will eventually be automated.
-		Offsets struct {
-			// How frequently to commit updated offsets. Defaults to 1s.
-			CommitInterval time.Duration
-
-			// The initial offset to use if no offset was previously committed.
-			// Should be OffsetNewest or OffsetOldest. Defaults to OffsetNewest.
-			Initial int64
-
-			// The retention duration for committed offsets. If zero, disabled
-			// (in which case the `offsets.retention.minutes` option on the
-			// broker will be used).  Kafka only supports precision up to
-			// milliseconds; nanoseconds will be truncated. Requires Kafka
-			// broker version 0.9.0 or later.
-			// (default is 0: disabled).
-			Retention time.Duration
-
-			Retry struct {
-				// The total number of times to retry failing commit
-				// requests during OffsetManager shutdown (default 3).
-				Max int
-			}
-		}
-	}
-
-	// A user-provided string sent with every request to the brokers for logging,
-	// debugging, and auditing purposes. Defaults to "sarama", but you should
-	// probably set it to something specific to your application.
-	ClientID string
-	// The number of events to buffer in internal and external channels. This
-	// permits the producer and consumer to continue processing some messages
-	// in the background while user code is working, greatly improving throughput.
-	// Defaults to 256.
-	ChannelBufferSize int
-	// The version of Kafka that Sarama will assume it is running against.
-	// Defaults to the oldest supported stable version. Since Kafka provides
-	// backwards-compatibility, setting it to a version older than you have
-	// will not break anything, although it may prevent you from using the
-	// latest features. Setting it to a version greater than you are actually
-	// running may lead to random breakage.
-	Version KafkaVersion
-	// The registry to define metrics into.
-	// Defaults to a local registry.
-	// If you want to disable metrics gathering, set "metrics.UseNilMetrics" to "true"
-	// prior to starting Sarama.
-	// See Examples on how to use the metrics registry
-	MetricRegistry metrics.Registry
-}
-
-// NewConfig returns a new configuration instance with sane defaults.
-func NewConfig() *Config {
-	c := &Config{}
-
-	c.Admin.Timeout = 3 * time.Second
-
-	c.Net.MaxOpenRequests = 5
-	c.Net.DialTimeout = 30 * time.Second
-	c.Net.ReadTimeout = 30 * time.Second
-	c.Net.WriteTimeout = 30 * time.Second
-	c.Net.SASL.Handshake = true
-
-	c.Metadata.Retry.Max = 3
-	c.Metadata.Retry.Backoff = 250 * time.Millisecond
-	c.Metadata.RefreshFrequency = 10 * time.Minute
-	c.Metadata.Full = true
-
-	c.Producer.MaxMessageBytes = 1000000
-	c.Producer.RequiredAcks = WaitForLocal
-	c.Producer.Timeout = 10 * time.Second
-	c.Producer.Partitioner = NewHashPartitioner
-	c.Producer.Retry.Max = 3
-	c.Producer.Retry.Backoff = 100 * time.Millisecond
-	c.Producer.Return.Errors = true
-	c.Producer.CompressionLevel = CompressionLevelDefault
-
-	c.Consumer.Fetch.Min = 1
-	c.Consumer.Fetch.Default = 1024 * 1024
-	c.Consumer.Retry.Backoff = 2 * time.Second
-	c.Consumer.MaxWaitTime = 250 * time.Millisecond
-	c.Consumer.MaxProcessingTime = 100 * time.Millisecond
-	c.Consumer.Return.Errors = false
-	c.Consumer.Offsets.CommitInterval = 1 * time.Second
-	c.Consumer.Offsets.Initial = OffsetNewest
-	c.Consumer.Offsets.Retry.Max = 3
-
-	c.Consumer.Group.Session.Timeout = 10 * time.Second
-	c.Consumer.Group.Heartbeat.Interval = 3 * time.Second
-	c.Consumer.Group.Rebalance.Strategy = BalanceStrategyRange
-	c.Consumer.Group.Rebalance.Timeout = 60 * time.Second
-	c.Consumer.Group.Rebalance.Retry.Max = 4
-	c.Consumer.Group.Rebalance.Retry.Backoff = 2 * time.Second
-
-	c.ClientID = defaultClientID
-	c.ChannelBufferSize = 256
-	c.Version = MinVersion
-	c.MetricRegistry = metrics.NewRegistry()
-
-	return c
-}
-
-// Validate checks a Config instance. It will return a
-// ConfigurationError if the specified values don't make sense.
-func (c *Config) Validate() error {
-	// some configuration values should be warned on but not fail completely, do those first
-	if c.Net.TLS.Enable == false && c.Net.TLS.Config != nil {
-		Logger.Println("Net.TLS is disabled but a non-nil configuration was provided.")
-	}
-	if c.Net.SASL.Enable == false {
-		if c.Net.SASL.User != "" {
-			Logger.Println("Net.SASL is disabled but a non-empty username was provided.")
-		}
-		if c.Net.SASL.Password != "" {
-			Logger.Println("Net.SASL is disabled but a non-empty password was provided.")
-		}
-	}
-	if c.Producer.RequiredAcks > 1 {
-		Logger.Println("Producer.RequiredAcks > 1 is deprecated and will raise an exception with kafka >= 0.8.2.0.")
-	}
-	if c.Producer.MaxMessageBytes >= int(MaxRequestSize) {
-		Logger.Println("Producer.MaxMessageBytes must be smaller than MaxRequestSize; it will be ignored.")
-	}
-	if c.Producer.Flush.Bytes >= int(MaxRequestSize) {
-		Logger.Println("Producer.Flush.Bytes must be smaller than MaxRequestSize; it will be ignored.")
-	}
-	if (c.Producer.Flush.Bytes > 0 || c.Producer.Flush.Messages > 0) && c.Producer.Flush.Frequency == 0 {
-		Logger.Println("Producer.Flush: Bytes or Messages are set, but Frequency is not; messages may not get flushed.")
-	}
-	if c.Producer.Timeout%time.Millisecond != 0 {
-		Logger.Println("Producer.Timeout only supports millisecond resolution; nanoseconds will be truncated.")
-	}
-	if c.Consumer.MaxWaitTime < 100*time.Millisecond {
-		Logger.Println("Consumer.MaxWaitTime is very low, which can cause high CPU and network usage. See documentation for details.")
-	}
-	if c.Consumer.MaxWaitTime%time.Millisecond != 0 {
-		Logger.Println("Consumer.MaxWaitTime only supports millisecond precision; nanoseconds will be truncated.")
-	}
-	if c.Consumer.Offsets.Retention%time.Millisecond != 0 {
-		Logger.Println("Consumer.Offsets.Retention only supports millisecond precision; nanoseconds will be truncated.")
-	}
-	if c.Consumer.Group.Session.Timeout%time.Millisecond != 0 {
-		Logger.Println("Consumer.Group.Session.Timeout only supports millisecond precision; nanoseconds will be truncated.")
-	}
-	if c.Consumer.Group.Heartbeat.Interval%time.Millisecond != 0 {
-		Logger.Println("Consumer.Group.Heartbeat.Interval only supports millisecond precision; nanoseconds will be truncated.")
-	}
-	if c.Consumer.Group.Rebalance.Timeout%time.Millisecond != 0 {
-		Logger.Println("Consumer.Group.Rebalance.Timeout only supports millisecond precision; nanoseconds will be truncated.")
-	}
-	if c.ClientID == defaultClientID {
-		Logger.Println("ClientID is the default of 'sarama', you should consider setting it to something application-specific.")
-	}
-
-	// validate Net values
-	switch {
-	case c.Net.MaxOpenRequests <= 0:
-		return ConfigurationError("Net.MaxOpenRequests must be > 0")
-	case c.Net.DialTimeout <= 0:
-		return ConfigurationError("Net.DialTimeout must be > 0")
-	case c.Net.ReadTimeout <= 0:
-		return ConfigurationError("Net.ReadTimeout must be > 0")
-	case c.Net.WriteTimeout <= 0:
-		return ConfigurationError("Net.WriteTimeout must be > 0")
-	case c.Net.KeepAlive < 0:
-		return ConfigurationError("Net.KeepAlive must be >= 0")
-	case c.Net.SASL.Enable:
-		// For backwards compatibility, empty mechanism value defaults to PLAIN
-		isSASLPlain := len(c.Net.SASL.Mechanism) == 0 || c.Net.SASL.Mechanism == SASLTypePlaintext
-		if isSASLPlain {
-			if c.Net.SASL.User == "" {
-				return ConfigurationError("Net.SASL.User must not be empty when SASL is enabled")
-			}
-			if c.Net.SASL.Password == "" {
-				return ConfigurationError("Net.SASL.Password must not be empty when SASL is enabled")
-			}
-		} else if c.Net.SASL.Mechanism == SASLTypeOAuth {
-			if c.Net.SASL.TokenProvider == nil {
-				return ConfigurationError("An AccessTokenProvider instance must be provided to Net.SASL.User.TokenProvider")
-			}
-		} else {
-			msg := fmt.Sprintf("The SASL mechanism configuration is invalid. Possible values are `%s` and `%s`",
-				SASLTypeOAuth, SASLTypePlaintext)
-			return ConfigurationError(msg)
-		}
-	}
-
-	// validate the Admin values
-	switch {
-	case c.Admin.Timeout <= 0:
-		return ConfigurationError("Admin.Timeout must be > 0")
-	}
-
-	// validate the Metadata values
-	switch {
-	case c.Metadata.Retry.Max < 0:
-		return ConfigurationError("Metadata.Retry.Max must be >= 0")
-	case c.Metadata.Retry.Backoff < 0:
-		return ConfigurationError("Metadata.Retry.Backoff must be >= 0")
-	case c.Metadata.RefreshFrequency < 0:
-		return ConfigurationError("Metadata.RefreshFrequency must be >= 0")
-	}
-
-	// validate the Producer values
-	switch {
-	case c.Producer.MaxMessageBytes <= 0:
-		return ConfigurationError("Producer.MaxMessageBytes must be > 0")
-	case c.Producer.RequiredAcks < -1:
-		return ConfigurationError("Producer.RequiredAcks must be >= -1")
-	case c.Producer.Timeout <= 0:
-		return ConfigurationError("Producer.Timeout must be > 0")
-	case c.Producer.Partitioner == nil:
-		return ConfigurationError("Producer.Partitioner must not be nil")
-	case c.Producer.Flush.Bytes < 0:
-		return ConfigurationError("Producer.Flush.Bytes must be >= 0")
-	case c.Producer.Flush.Messages < 0:
-		return ConfigurationError("Producer.Flush.Messages must be >= 0")
-	case c.Producer.Flush.Frequency < 0:
-		return ConfigurationError("Producer.Flush.Frequency must be >= 0")
-	case c.Producer.Flush.MaxMessages < 0:
-		return ConfigurationError("Producer.Flush.MaxMessages must be >= 0")
-	case c.Producer.Flush.MaxMessages > 0 && c.Producer.Flush.MaxMessages < c.Producer.Flush.Messages:
-		return ConfigurationError("Producer.Flush.MaxMessages must be >= Producer.Flush.Messages when set")
-	case c.Producer.Retry.Max < 0:
-		return ConfigurationError("Producer.Retry.Max must be >= 0")
-	case c.Producer.Retry.Backoff < 0:
-		return ConfigurationError("Producer.Retry.Backoff must be >= 0")
-	}
-
-	if c.Producer.Compression == CompressionLZ4 && !c.Version.IsAtLeast(V0_10_0_0) {
-		return ConfigurationError("lz4 compression requires Version >= V0_10_0_0")
-	}
-
-	if c.Producer.Compression == CompressionGZIP {
-		if c.Producer.CompressionLevel != CompressionLevelDefault {
-			if _, err := gzip.NewWriterLevel(ioutil.Discard, c.Producer.CompressionLevel); err != nil {
-				return ConfigurationError(fmt.Sprintf("gzip compression does not work with level %d: %v", c.Producer.CompressionLevel, err))
-			}
-		}
-	}
-
-	if c.Producer.Idempotent {
-		if !c.Version.IsAtLeast(V0_11_0_0) {
-			return ConfigurationError("Idempotent producer requires Version >= V0_11_0_0")
-		}
-		if c.Producer.Retry.Max == 0 {
-			return ConfigurationError("Idempotent producer requires Producer.Retry.Max >= 1")
-		}
-		if c.Producer.RequiredAcks != WaitForAll {
-			return ConfigurationError("Idempotent producer requires Producer.RequiredAcks to be WaitForAll")
-		}
-		if c.Net.MaxOpenRequests > 1 {
-			return ConfigurationError("Idempotent producer requires Net.MaxOpenRequests to be 1")
-		}
-	}
-
-	// validate the Consumer values
-	switch {
-	case c.Consumer.Fetch.Min <= 0:
-		return ConfigurationError("Consumer.Fetch.Min must be > 0")
-	case c.Consumer.Fetch.Default <= 0:
-		return ConfigurationError("Consumer.Fetch.Default must be > 0")
-	case c.Consumer.Fetch.Max < 0:
-		return ConfigurationError("Consumer.Fetch.Max must be >= 0")
-	case c.Consumer.MaxWaitTime < 1*time.Millisecond:
-		return ConfigurationError("Consumer.MaxWaitTime must be >= 1ms")
-	case c.Consumer.MaxProcessingTime <= 0:
-		return ConfigurationError("Consumer.MaxProcessingTime must be > 0")
-	case c.Consumer.Retry.Backoff < 0:
-		return ConfigurationError("Consumer.Retry.Backoff must be >= 0")
-	case c.Consumer.Offsets.CommitInterval <= 0:
-		return ConfigurationError("Consumer.Offsets.CommitInterval must be > 0")
-	case c.Consumer.Offsets.Initial != OffsetOldest && c.Consumer.Offsets.Initial != OffsetNewest:
-		return ConfigurationError("Consumer.Offsets.Initial must be OffsetOldest or OffsetNewest")
-	case c.Consumer.Offsets.Retry.Max < 0:
-		return ConfigurationError("Consumer.Offsets.Retry.Max must be >= 0")
-	}
-
-	// validate the Consumer Group values
-	switch {
-	case c.Consumer.Group.Session.Timeout <= 2*time.Millisecond:
-		return ConfigurationError("Consumer.Group.Session.Timeout must be >= 2ms")
-	case c.Consumer.Group.Heartbeat.Interval < 1*time.Millisecond:
-		return ConfigurationError("Consumer.Group.Heartbeat.Interval must be >= 1ms")
-	case c.Consumer.Group.Heartbeat.Interval >= c.Consumer.Group.Session.Timeout:
-		return ConfigurationError("Consumer.Group.Heartbeat.Interval must be < Consumer.Group.Session.Timeout")
-	case c.Consumer.Group.Rebalance.Strategy == nil:
-		return ConfigurationError("Consumer.Group.Rebalance.Strategy must not be empty")
-	case c.Consumer.Group.Rebalance.Timeout <= time.Millisecond:
-		return ConfigurationError("Consumer.Group.Rebalance.Timeout must be >= 1ms")
-	case c.Consumer.Group.Rebalance.Retry.Max < 0:
-		return ConfigurationError("Consumer.Group.Rebalance.Retry.Max must be >= 0")
-	case c.Consumer.Group.Rebalance.Retry.Backoff < 0:
-		return ConfigurationError("Consumer.Group.Rebalance.Retry.Backoff must be >= 0")
-	}
-
-	// validate misc shared values
-	switch {
-	case c.ChannelBufferSize < 0:
-		return ConfigurationError("ChannelBufferSize must be >= 0")
-	case !validID.MatchString(c.ClientID):
-		return ConfigurationError("ClientID is invalid")
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/config_resource_type.go b/vendor/gopkg.in/Shopify/sarama.v1/config_resource_type.go
deleted file mode 100644
index 848cc9c..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/config_resource_type.go
+++ /dev/null
@@ -1,15 +0,0 @@
-package sarama
-
-type ConfigResourceType int8
-
-// Taken from :
-// https://cwiki.apache.org/confluence/display/KAFKA/KIP-133%3A+Describe+and+Alter+Configs+Admin+APIs#KIP-133:DescribeandAlterConfigsAdminAPIs-WireFormattypes
-
-const (
-	UnknownResource ConfigResourceType = 0
-	AnyResource     ConfigResourceType = 1
-	TopicResource   ConfigResourceType = 2
-	GroupResource   ConfigResourceType = 3
-	ClusterResource ConfigResourceType = 4
-	BrokerResource  ConfigResourceType = 5
-)
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/consumer.go b/vendor/gopkg.in/Shopify/sarama.v1/consumer.go
deleted file mode 100644
index ce72ff1..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/consumer.go
+++ /dev/null
@@ -1,833 +0,0 @@
-package sarama
-
-import (
-	"errors"
-	"fmt"
-	"sync"
-	"sync/atomic"
-	"time"
-)
-
-// ConsumerMessage encapsulates a Kafka message returned by the consumer.
-type ConsumerMessage struct {
-	Key, Value     []byte
-	Topic          string
-	Partition      int32
-	Offset         int64
-	Timestamp      time.Time       // only set if kafka is version 0.10+, inner message timestamp
-	BlockTimestamp time.Time       // only set if kafka is version 0.10+, outer (compressed) block timestamp
-	Headers        []*RecordHeader // only set if kafka is version 0.11+
-}
-
-// ConsumerError is what is provided to the user when an error occurs.
-// It wraps an error and includes the topic and partition.
-type ConsumerError struct {
-	Topic     string
-	Partition int32
-	Err       error
-}
-
-func (ce ConsumerError) Error() string {
-	return fmt.Sprintf("kafka: error while consuming %s/%d: %s", ce.Topic, ce.Partition, ce.Err)
-}
-
-// ConsumerErrors is a type that wraps a batch of errors and implements the Error interface.
-// It can be returned from the PartitionConsumer's Close methods to avoid the need to manually drain errors
-// when stopping.
-type ConsumerErrors []*ConsumerError
-
-func (ce ConsumerErrors) Error() string {
-	return fmt.Sprintf("kafka: %d errors while consuming", len(ce))
-}
-
-// Consumer manages PartitionConsumers which process Kafka messages from brokers. You MUST call Close()
-// on a consumer to avoid leaks, it will not be garbage-collected automatically when it passes out of
-// scope.
-//
-// Sarama's Consumer type does not currently support automatic consumer-group rebalancing and offset tracking.
-// For Zookeeper-based tracking (Kafka 0.8.2 and earlier), the https://github.com/wvanbergen/kafka library
-// builds on Sarama to add this support. For Kafka-based tracking (Kafka 0.9 and later), the
-// https://github.com/bsm/sarama-cluster library builds on Sarama to add this support.
-type Consumer interface {
-
-	// Topics returns the set of available topics as retrieved from the cluster
-	// metadata. This method is the same as Client.Topics(), and is provided for
-	// convenience.
-	Topics() ([]string, error)
-
-	// Partitions returns the sorted list of all partition IDs for the given topic.
-	// This method is the same as Client.Partitions(), and is provided for convenience.
-	Partitions(topic string) ([]int32, error)
-
-	// ConsumePartition creates a PartitionConsumer on the given topic/partition with
-	// the given offset. It will return an error if this Consumer is already consuming
-	// on the given topic/partition. Offset can be a literal offset, or OffsetNewest
-	// or OffsetOldest
-	ConsumePartition(topic string, partition int32, offset int64) (PartitionConsumer, error)
-
-	// HighWaterMarks returns the current high water marks for each topic and partition.
-	// Consistency between partitions is not guaranteed since high water marks are updated separately.
-	HighWaterMarks() map[string]map[int32]int64
-
-	// Close shuts down the consumer. It must be called after all child
-	// PartitionConsumers have already been closed.
-	Close() error
-}
-
-type consumer struct {
-	client    Client
-	conf      *Config
-	ownClient bool
-
-	lock            sync.Mutex
-	children        map[string]map[int32]*partitionConsumer
-	brokerConsumers map[*Broker]*brokerConsumer
-}
-
-// NewConsumer creates a new consumer using the given broker addresses and configuration.
-func NewConsumer(addrs []string, config *Config) (Consumer, error) {
-	client, err := NewClient(addrs, config)
-	if err != nil {
-		return nil, err
-	}
-
-	c, err := NewConsumerFromClient(client)
-	if err != nil {
-		return nil, err
-	}
-	c.(*consumer).ownClient = true
-	return c, nil
-}
-
-// NewConsumerFromClient creates a new consumer using the given client. It is still
-// necessary to call Close() on the underlying client when shutting down this consumer.
-func NewConsumerFromClient(client Client) (Consumer, error) {
-	// Check that we are not dealing with a closed Client before processing any other arguments
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	c := &consumer{
-		client:          client,
-		conf:            client.Config(),
-		children:        make(map[string]map[int32]*partitionConsumer),
-		brokerConsumers: make(map[*Broker]*brokerConsumer),
-	}
-
-	return c, nil
-}
-
-func (c *consumer) Close() error {
-	if c.ownClient {
-		return c.client.Close()
-	}
-	return nil
-}
-
-func (c *consumer) Topics() ([]string, error) {
-	return c.client.Topics()
-}
-
-func (c *consumer) Partitions(topic string) ([]int32, error) {
-	return c.client.Partitions(topic)
-}
-
-func (c *consumer) ConsumePartition(topic string, partition int32, offset int64) (PartitionConsumer, error) {
-	child := &partitionConsumer{
-		consumer:  c,
-		conf:      c.conf,
-		topic:     topic,
-		partition: partition,
-		messages:  make(chan *ConsumerMessage, c.conf.ChannelBufferSize),
-		errors:    make(chan *ConsumerError, c.conf.ChannelBufferSize),
-		feeder:    make(chan *FetchResponse, 1),
-		trigger:   make(chan none, 1),
-		dying:     make(chan none),
-		fetchSize: c.conf.Consumer.Fetch.Default,
-	}
-
-	if err := child.chooseStartingOffset(offset); err != nil {
-		return nil, err
-	}
-
-	var leader *Broker
-	var err error
-	if leader, err = c.client.Leader(child.topic, child.partition); err != nil {
-		return nil, err
-	}
-
-	if err := c.addChild(child); err != nil {
-		return nil, err
-	}
-
-	go withRecover(child.dispatcher)
-	go withRecover(child.responseFeeder)
-
-	child.broker = c.refBrokerConsumer(leader)
-	child.broker.input <- child
-
-	return child, nil
-}
-
-func (c *consumer) HighWaterMarks() map[string]map[int32]int64 {
-	c.lock.Lock()
-	defer c.lock.Unlock()
-
-	hwms := make(map[string]map[int32]int64)
-	for topic, p := range c.children {
-		hwm := make(map[int32]int64, len(p))
-		for partition, pc := range p {
-			hwm[partition] = pc.HighWaterMarkOffset()
-		}
-		hwms[topic] = hwm
-	}
-
-	return hwms
-}
-
-func (c *consumer) addChild(child *partitionConsumer) error {
-	c.lock.Lock()
-	defer c.lock.Unlock()
-
-	topicChildren := c.children[child.topic]
-	if topicChildren == nil {
-		topicChildren = make(map[int32]*partitionConsumer)
-		c.children[child.topic] = topicChildren
-	}
-
-	if topicChildren[child.partition] != nil {
-		return ConfigurationError("That topic/partition is already being consumed")
-	}
-
-	topicChildren[child.partition] = child
-	return nil
-}
-
-func (c *consumer) removeChild(child *partitionConsumer) {
-	c.lock.Lock()
-	defer c.lock.Unlock()
-
-	delete(c.children[child.topic], child.partition)
-}
-
-func (c *consumer) refBrokerConsumer(broker *Broker) *brokerConsumer {
-	c.lock.Lock()
-	defer c.lock.Unlock()
-
-	bc := c.brokerConsumers[broker]
-	if bc == nil {
-		bc = c.newBrokerConsumer(broker)
-		c.brokerConsumers[broker] = bc
-	}
-
-	bc.refs++
-
-	return bc
-}
-
-func (c *consumer) unrefBrokerConsumer(brokerWorker *brokerConsumer) {
-	c.lock.Lock()
-	defer c.lock.Unlock()
-
-	brokerWorker.refs--
-
-	if brokerWorker.refs == 0 {
-		close(brokerWorker.input)
-		if c.brokerConsumers[brokerWorker.broker] == brokerWorker {
-			delete(c.brokerConsumers, brokerWorker.broker)
-		}
-	}
-}
-
-func (c *consumer) abandonBrokerConsumer(brokerWorker *brokerConsumer) {
-	c.lock.Lock()
-	defer c.lock.Unlock()
-
-	delete(c.brokerConsumers, brokerWorker.broker)
-}
-
-// PartitionConsumer
-
-// PartitionConsumer processes Kafka messages from a given topic and partition. You MUST call one of Close() or
-// AsyncClose() on a PartitionConsumer to avoid leaks; it will not be garbage-collected automatically when it passes out
-// of scope.
-//
-// The simplest way of using a PartitionConsumer is to loop over its Messages channel using a for/range
-// loop. The PartitionConsumer will only stop itself in one case: when the offset being consumed is reported
-// as out of range by the brokers. In this case you should decide what you want to do (try a different offset,
-// notify a human, etc) and handle it appropriately. For all other error cases, it will just keep retrying.
-// By default, it logs these errors to sarama.Logger; if you want to be notified directly of all errors, set
-// your config's Consumer.Return.Errors to true and read from the Errors channel, using a select statement
-// or a separate goroutine. Check out the Consumer examples to see implementations of these different approaches.
-//
-// To terminate such a for/range loop while the loop is executing, call AsyncClose. This will kick off the process of
-// consumer tear-down & return imediately. Continue to loop, servicing the Messages channel until the teardown process
-// AsyncClose initiated closes it (thus terminating the for/range loop). If you've already ceased reading Messages, call
-// Close; this will signal the PartitionConsumer's goroutines to begin shutting down (just like AsyncClose), but will
-// also drain the Messages channel, harvest all errors & return them once cleanup has completed.
-type PartitionConsumer interface {
-
-	// AsyncClose initiates a shutdown of the PartitionConsumer. This method will return immediately, after which you
-	// should continue to service the 'Messages' and 'Errors' channels until they are empty. It is required to call this
-	// function, or Close before a consumer object passes out of scope, as it will otherwise leak memory. You must call
-	// this before calling Close on the underlying client.
-	AsyncClose()
-
-	// Close stops the PartitionConsumer from fetching messages. It will initiate a shutdown just like AsyncClose, drain
-	// the Messages channel, harvest any errors & return them to the caller. Note that if you are continuing to service
-	// the Messages channel when this function is called, you will be competing with Close for messages; consider
-	// calling AsyncClose, instead. It is required to call this function (or AsyncClose) before a consumer object passes
-	// out of scope, as it will otherwise leak memory. You must call this before calling Close on the underlying client.
-	Close() error
-
-	// Messages returns the read channel for the messages that are returned by
-	// the broker.
-	Messages() <-chan *ConsumerMessage
-
-	// Errors returns a read channel of errors that occurred during consuming, if
-	// enabled. By default, errors are logged and not returned over this channel.
-	// If you want to implement any custom error handling, set your config's
-	// Consumer.Return.Errors setting to true, and read from this channel.
-	Errors() <-chan *ConsumerError
-
-	// HighWaterMarkOffset returns the high water mark offset of the partition,
-	// i.e. the offset that will be used for the next message that will be produced.
-	// You can use this to determine how far behind the processing is.
-	HighWaterMarkOffset() int64
-}
-
-type partitionConsumer struct {
-	highWaterMarkOffset int64 // must be at the top of the struct because https://golang.org/pkg/sync/atomic/#pkg-note-BUG
-	consumer            *consumer
-	conf                *Config
-	topic               string
-	partition           int32
-
-	broker   *brokerConsumer
-	messages chan *ConsumerMessage
-	errors   chan *ConsumerError
-	feeder   chan *FetchResponse
-
-	trigger, dying chan none
-	responseResult error
-	closeOnce      sync.Once
-
-	fetchSize int32
-	offset    int64
-
-	retries int32
-}
-
-var errTimedOut = errors.New("timed out feeding messages to the user") // not user-facing
-
-func (child *partitionConsumer) sendError(err error) {
-	cErr := &ConsumerError{
-		Topic:     child.topic,
-		Partition: child.partition,
-		Err:       err,
-	}
-
-	if child.conf.Consumer.Return.Errors {
-		child.errors <- cErr
-	} else {
-		Logger.Println(cErr)
-	}
-}
-
-func (child *partitionConsumer) computeBackoff() time.Duration {
-	if child.conf.Consumer.Retry.BackoffFunc != nil {
-		retries := atomic.AddInt32(&child.retries, 1)
-		return child.conf.Consumer.Retry.BackoffFunc(int(retries))
-	} else {
-		return child.conf.Consumer.Retry.Backoff
-	}
-}
-
-func (child *partitionConsumer) dispatcher() {
-	for range child.trigger {
-		select {
-		case <-child.dying:
-			close(child.trigger)
-		case <-time.After(child.computeBackoff()):
-			if child.broker != nil {
-				child.consumer.unrefBrokerConsumer(child.broker)
-				child.broker = nil
-			}
-
-			Logger.Printf("consumer/%s/%d finding new broker\n", child.topic, child.partition)
-			if err := child.dispatch(); err != nil {
-				child.sendError(err)
-				child.trigger <- none{}
-			}
-		}
-	}
-
-	if child.broker != nil {
-		child.consumer.unrefBrokerConsumer(child.broker)
-	}
-	child.consumer.removeChild(child)
-	close(child.feeder)
-}
-
-func (child *partitionConsumer) dispatch() error {
-	if err := child.consumer.client.RefreshMetadata(child.topic); err != nil {
-		return err
-	}
-
-	var leader *Broker
-	var err error
-	if leader, err = child.consumer.client.Leader(child.topic, child.partition); err != nil {
-		return err
-	}
-
-	child.broker = child.consumer.refBrokerConsumer(leader)
-
-	child.broker.input <- child
-
-	return nil
-}
-
-func (child *partitionConsumer) chooseStartingOffset(offset int64) error {
-	newestOffset, err := child.consumer.client.GetOffset(child.topic, child.partition, OffsetNewest)
-	if err != nil {
-		return err
-	}
-	oldestOffset, err := child.consumer.client.GetOffset(child.topic, child.partition, OffsetOldest)
-	if err != nil {
-		return err
-	}
-
-	switch {
-	case offset == OffsetNewest:
-		child.offset = newestOffset
-	case offset == OffsetOldest:
-		child.offset = oldestOffset
-	case offset >= oldestOffset && offset <= newestOffset:
-		child.offset = offset
-	default:
-		return ErrOffsetOutOfRange
-	}
-
-	return nil
-}
-
-func (child *partitionConsumer) Messages() <-chan *ConsumerMessage {
-	return child.messages
-}
-
-func (child *partitionConsumer) Errors() <-chan *ConsumerError {
-	return child.errors
-}
-
-func (child *partitionConsumer) AsyncClose() {
-	// this triggers whatever broker owns this child to abandon it and close its trigger channel, which causes
-	// the dispatcher to exit its loop, which removes it from the consumer then closes its 'messages' and
-	// 'errors' channel (alternatively, if the child is already at the dispatcher for some reason, that will
-	// also just close itself)
-	child.closeOnce.Do(func() {
-		close(child.dying)
-	})
-}
-
-func (child *partitionConsumer) Close() error {
-	child.AsyncClose()
-
-	go withRecover(func() {
-		for range child.messages {
-			// drain
-		}
-	})
-
-	var errors ConsumerErrors
-	for err := range child.errors {
-		errors = append(errors, err)
-	}
-
-	if len(errors) > 0 {
-		return errors
-	}
-	return nil
-}
-
-func (child *partitionConsumer) HighWaterMarkOffset() int64 {
-	return atomic.LoadInt64(&child.highWaterMarkOffset)
-}
-
-func (child *partitionConsumer) responseFeeder() {
-	var msgs []*ConsumerMessage
-	expiryTicker := time.NewTicker(child.conf.Consumer.MaxProcessingTime)
-	firstAttempt := true
-
-feederLoop:
-	for response := range child.feeder {
-		msgs, child.responseResult = child.parseResponse(response)
-
-		if child.responseResult == nil {
-			atomic.StoreInt32(&child.retries, 0)
-		}
-
-		for i, msg := range msgs {
-		messageSelect:
-			select {
-			case child.messages <- msg:
-				firstAttempt = true
-			case <-expiryTicker.C:
-				if !firstAttempt {
-					child.responseResult = errTimedOut
-					child.broker.acks.Done()
-					for _, msg = range msgs[i:] {
-						child.messages <- msg
-					}
-					child.broker.input <- child
-					continue feederLoop
-				} else {
-					// current message has not been sent, return to select
-					// statement
-					firstAttempt = false
-					goto messageSelect
-				}
-			}
-		}
-
-		child.broker.acks.Done()
-	}
-
-	expiryTicker.Stop()
-	close(child.messages)
-	close(child.errors)
-}
-
-func (child *partitionConsumer) parseMessages(msgSet *MessageSet) ([]*ConsumerMessage, error) {
-	var messages []*ConsumerMessage
-	for _, msgBlock := range msgSet.Messages {
-		for _, msg := range msgBlock.Messages() {
-			offset := msg.Offset
-			timestamp := msg.Msg.Timestamp
-			if msg.Msg.Version >= 1 {
-				baseOffset := msgBlock.Offset - msgBlock.Messages()[len(msgBlock.Messages())-1].Offset
-				offset += baseOffset
-				if msg.Msg.LogAppendTime {
-					timestamp = msgBlock.Msg.Timestamp
-				}
-			}
-			if offset < child.offset {
-				continue
-			}
-			messages = append(messages, &ConsumerMessage{
-				Topic:          child.topic,
-				Partition:      child.partition,
-				Key:            msg.Msg.Key,
-				Value:          msg.Msg.Value,
-				Offset:         offset,
-				Timestamp:      timestamp,
-				BlockTimestamp: msgBlock.Msg.Timestamp,
-			})
-			child.offset = offset + 1
-		}
-	}
-	if len(messages) == 0 {
-		child.offset++
-	}
-	return messages, nil
-}
-
-func (child *partitionConsumer) parseRecords(batch *RecordBatch) ([]*ConsumerMessage, error) {
-	var messages []*ConsumerMessage
-	for _, rec := range batch.Records {
-		offset := batch.FirstOffset + rec.OffsetDelta
-		if offset < child.offset {
-			continue
-		}
-		timestamp := batch.FirstTimestamp.Add(rec.TimestampDelta)
-		if batch.LogAppendTime {
-			timestamp = batch.MaxTimestamp
-		}
-		messages = append(messages, &ConsumerMessage{
-			Topic:     child.topic,
-			Partition: child.partition,
-			Key:       rec.Key,
-			Value:     rec.Value,
-			Offset:    offset,
-			Timestamp: timestamp,
-			Headers:   rec.Headers,
-		})
-		child.offset = offset + 1
-	}
-	if len(messages) == 0 {
-		child.offset++
-	}
-	return messages, nil
-}
-
-func (child *partitionConsumer) parseResponse(response *FetchResponse) ([]*ConsumerMessage, error) {
-	block := response.GetBlock(child.topic, child.partition)
-	if block == nil {
-		return nil, ErrIncompleteResponse
-	}
-
-	if block.Err != ErrNoError {
-		return nil, block.Err
-	}
-
-	nRecs, err := block.numRecords()
-	if err != nil {
-		return nil, err
-	}
-	if nRecs == 0 {
-		partialTrailingMessage, err := block.isPartial()
-		if err != nil {
-			return nil, err
-		}
-		// We got no messages. If we got a trailing one then we need to ask for more data.
-		// Otherwise we just poll again and wait for one to be produced...
-		if partialTrailingMessage {
-			if child.conf.Consumer.Fetch.Max > 0 && child.fetchSize == child.conf.Consumer.Fetch.Max {
-				// we can't ask for more data, we've hit the configured limit
-				child.sendError(ErrMessageTooLarge)
-				child.offset++ // skip this one so we can keep processing future messages
-			} else {
-				child.fetchSize *= 2
-				if child.conf.Consumer.Fetch.Max > 0 && child.fetchSize > child.conf.Consumer.Fetch.Max {
-					child.fetchSize = child.conf.Consumer.Fetch.Max
-				}
-			}
-		}
-
-		return nil, nil
-	}
-
-	// we got messages, reset our fetch size in case it was increased for a previous request
-	child.fetchSize = child.conf.Consumer.Fetch.Default
-	atomic.StoreInt64(&child.highWaterMarkOffset, block.HighWaterMarkOffset)
-
-	messages := []*ConsumerMessage{}
-	for _, records := range block.RecordsSet {
-		switch records.recordsType {
-		case legacyRecords:
-			messageSetMessages, err := child.parseMessages(records.MsgSet)
-			if err != nil {
-				return nil, err
-			}
-
-			messages = append(messages, messageSetMessages...)
-		case defaultRecords:
-			recordBatchMessages, err := child.parseRecords(records.RecordBatch)
-			if err != nil {
-				return nil, err
-			}
-			if control, err := records.isControl(); err != nil || control {
-				continue
-			}
-
-			messages = append(messages, recordBatchMessages...)
-		default:
-			return nil, fmt.Errorf("unknown records type: %v", records.recordsType)
-		}
-	}
-
-	return messages, nil
-}
-
-// brokerConsumer
-
-type brokerConsumer struct {
-	consumer         *consumer
-	broker           *Broker
-	input            chan *partitionConsumer
-	newSubscriptions chan []*partitionConsumer
-	wait             chan none
-	subscriptions    map[*partitionConsumer]none
-	acks             sync.WaitGroup
-	refs             int
-}
-
-func (c *consumer) newBrokerConsumer(broker *Broker) *brokerConsumer {
-	bc := &brokerConsumer{
-		consumer:         c,
-		broker:           broker,
-		input:            make(chan *partitionConsumer),
-		newSubscriptions: make(chan []*partitionConsumer),
-		wait:             make(chan none),
-		subscriptions:    make(map[*partitionConsumer]none),
-		refs:             0,
-	}
-
-	go withRecover(bc.subscriptionManager)
-	go withRecover(bc.subscriptionConsumer)
-
-	return bc
-}
-
-func (bc *brokerConsumer) subscriptionManager() {
-	var buffer []*partitionConsumer
-
-	// The subscriptionManager constantly accepts new subscriptions on `input` (even when the main subscriptionConsumer
-	// goroutine is in the middle of a network request) and batches it up. The main worker goroutine picks
-	// up a batch of new subscriptions between every network request by reading from `newSubscriptions`, so we give
-	// it nil if no new subscriptions are available. We also write to `wait` only when new subscriptions is available,
-	// so the main goroutine can block waiting for work if it has none.
-	for {
-		if len(buffer) > 0 {
-			select {
-			case event, ok := <-bc.input:
-				if !ok {
-					goto done
-				}
-				buffer = append(buffer, event)
-			case bc.newSubscriptions <- buffer:
-				buffer = nil
-			case bc.wait <- none{}:
-			}
-		} else {
-			select {
-			case event, ok := <-bc.input:
-				if !ok {
-					goto done
-				}
-				buffer = append(buffer, event)
-			case bc.newSubscriptions <- nil:
-			}
-		}
-	}
-
-done:
-	close(bc.wait)
-	if len(buffer) > 0 {
-		bc.newSubscriptions <- buffer
-	}
-	close(bc.newSubscriptions)
-}
-
-func (bc *brokerConsumer) subscriptionConsumer() {
-	<-bc.wait // wait for our first piece of work
-
-	// the subscriptionConsumer ensures we will get nil right away if no new subscriptions is available
-	for newSubscriptions := range bc.newSubscriptions {
-		bc.updateSubscriptions(newSubscriptions)
-
-		if len(bc.subscriptions) == 0 {
-			// We're about to be shut down or we're about to receive more subscriptions.
-			// Either way, the signal just hasn't propagated to our goroutine yet.
-			<-bc.wait
-			continue
-		}
-
-		response, err := bc.fetchNewMessages()
-
-		if err != nil {
-			Logger.Printf("consumer/broker/%d disconnecting due to error processing FetchRequest: %s\n", bc.broker.ID(), err)
-			bc.abort(err)
-			return
-		}
-
-		bc.acks.Add(len(bc.subscriptions))
-		for child := range bc.subscriptions {
-			child.feeder <- response
-		}
-		bc.acks.Wait()
-		bc.handleResponses()
-	}
-}
-
-func (bc *brokerConsumer) updateSubscriptions(newSubscriptions []*partitionConsumer) {
-	for _, child := range newSubscriptions {
-		bc.subscriptions[child] = none{}
-		Logger.Printf("consumer/broker/%d added subscription to %s/%d\n", bc.broker.ID(), child.topic, child.partition)
-	}
-
-	for child := range bc.subscriptions {
-		select {
-		case <-child.dying:
-			Logger.Printf("consumer/broker/%d closed dead subscription to %s/%d\n", bc.broker.ID(), child.topic, child.partition)
-			close(child.trigger)
-			delete(bc.subscriptions, child)
-		default:
-			break
-		}
-	}
-}
-
-func (bc *brokerConsumer) handleResponses() {
-	// handles the response codes left for us by our subscriptions, and abandons ones that have been closed
-	for child := range bc.subscriptions {
-		result := child.responseResult
-		child.responseResult = nil
-
-		switch result {
-		case nil:
-			break
-		case errTimedOut:
-			Logger.Printf("consumer/broker/%d abandoned subscription to %s/%d because consuming was taking too long\n",
-				bc.broker.ID(), child.topic, child.partition)
-			delete(bc.subscriptions, child)
-		case ErrOffsetOutOfRange:
-			// there's no point in retrying this it will just fail the same way again
-			// shut it down and force the user to choose what to do
-			child.sendError(result)
-			Logger.Printf("consumer/%s/%d shutting down because %s\n", child.topic, child.partition, result)
-			close(child.trigger)
-			delete(bc.subscriptions, child)
-		case ErrUnknownTopicOrPartition, ErrNotLeaderForPartition, ErrLeaderNotAvailable, ErrReplicaNotAvailable:
-			// not an error, but does need redispatching
-			Logger.Printf("consumer/broker/%d abandoned subscription to %s/%d because %s\n",
-				bc.broker.ID(), child.topic, child.partition, result)
-			child.trigger <- none{}
-			delete(bc.subscriptions, child)
-		default:
-			// dunno, tell the user and try redispatching
-			child.sendError(result)
-			Logger.Printf("consumer/broker/%d abandoned subscription to %s/%d because %s\n",
-				bc.broker.ID(), child.topic, child.partition, result)
-			child.trigger <- none{}
-			delete(bc.subscriptions, child)
-		}
-	}
-}
-
-func (bc *brokerConsumer) abort(err error) {
-	bc.consumer.abandonBrokerConsumer(bc)
-	_ = bc.broker.Close() // we don't care about the error this might return, we already have one
-
-	for child := range bc.subscriptions {
-		child.sendError(err)
-		child.trigger <- none{}
-	}
-
-	for newSubscriptions := range bc.newSubscriptions {
-		if len(newSubscriptions) == 0 {
-			<-bc.wait
-			continue
-		}
-		for _, child := range newSubscriptions {
-			child.sendError(err)
-			child.trigger <- none{}
-		}
-	}
-}
-
-func (bc *brokerConsumer) fetchNewMessages() (*FetchResponse, error) {
-	request := &FetchRequest{
-		MinBytes:    bc.consumer.conf.Consumer.Fetch.Min,
-		MaxWaitTime: int32(bc.consumer.conf.Consumer.MaxWaitTime / time.Millisecond),
-	}
-	if bc.consumer.conf.Version.IsAtLeast(V0_9_0_0) {
-		request.Version = 1
-	}
-	if bc.consumer.conf.Version.IsAtLeast(V0_10_0_0) {
-		request.Version = 2
-	}
-	if bc.consumer.conf.Version.IsAtLeast(V0_10_1_0) {
-		request.Version = 3
-		request.MaxBytes = MaxResponseSize
-	}
-	if bc.consumer.conf.Version.IsAtLeast(V0_11_0_0) {
-		request.Version = 4
-		request.Isolation = ReadUncommitted // We don't support yet transactions.
-	}
-
-	for child := range bc.subscriptions {
-		request.AddBlock(child.topic, child.partition, child.offset, child.fetchSize)
-	}
-
-	return bc.broker.Fetch(request)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/consumer_group.go b/vendor/gopkg.in/Shopify/sarama.v1/consumer_group.go
deleted file mode 100644
index 8c8babc..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/consumer_group.go
+++ /dev/null
@@ -1,780 +0,0 @@
-package sarama
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"sort"
-	"sync"
-	"time"
-)
-
-// ErrClosedConsumerGroup is the error returned when a method is called on a consumer group that has been closed.
-var ErrClosedConsumerGroup = errors.New("kafka: tried to use a consumer group that was closed")
-
-// ConsumerGroup is responsible for dividing up processing of topics and partitions
-// over a collection of processes (the members of the consumer group).
-type ConsumerGroup interface {
-	// Consume joins a cluster of consumers for a given list of topics and
-	// starts a blocking ConsumerGroupSession through the ConsumerGroupHandler.
-	//
-	// The life-cycle of a session is represented by the following steps:
-	//
-	// 1. The consumers join the group (as explained in https://kafka.apache.org/documentation/#intro_consumers)
-	//    and is assigned their "fair share" of partitions, aka 'claims'.
-	// 2. Before processing starts, the handler's Setup() hook is called to notify the user
-	//    of the claims and allow any necessary preparation or alteration of state.
-	// 3. For each of the assigned claims the handler's ConsumeClaim() function is then called
-	//    in a separate goroutine which requires it to be thread-safe. Any state must be carefully protected
-	//    from concurrent reads/writes.
-	// 4. The session will persist until one of the ConsumeClaim() functions exits. This can be either when the
-	//    parent context is cancelled or when a server-side rebalance cycle is initiated.
-	// 5. Once all the ConsumeClaim() loops have exited, the handler's Cleanup() hook is called
-	//    to allow the user to perform any final tasks before a rebalance.
-	// 6. Finally, marked offsets are committed one last time before claims are released.
-	//
-	// Please note, that once a rebalance is triggered, sessions must be completed within
-	// Config.Consumer.Group.Rebalance.Timeout. This means that ConsumeClaim() functions must exit
-	// as quickly as possible to allow time for Cleanup() and the final offset commit. If the timeout
-	// is exceeded, the consumer will be removed from the group by Kafka, which will cause offset
-	// commit failures.
-	Consume(ctx context.Context, topics []string, handler ConsumerGroupHandler) error
-
-	// Errors returns a read channel of errors that occurred during the consumer life-cycle.
-	// By default, errors are logged and not returned over this channel.
-	// If you want to implement any custom error handling, set your config's
-	// Consumer.Return.Errors setting to true, and read from this channel.
-	Errors() <-chan error
-
-	// Close stops the ConsumerGroup and detaches any running sessions. It is required to call
-	// this function before the object passes out of scope, as it will otherwise leak memory.
-	Close() error
-}
-
-type consumerGroup struct {
-	client    Client
-	ownClient bool
-
-	config   *Config
-	consumer Consumer
-	groupID  string
-	memberID string
-	errors   chan error
-
-	lock      sync.Mutex
-	closed    chan none
-	closeOnce sync.Once
-}
-
-// NewConsumerGroup creates a new consumer group the given broker addresses and configuration.
-func NewConsumerGroup(addrs []string, groupID string, config *Config) (ConsumerGroup, error) {
-	client, err := NewClient(addrs, config)
-	if err != nil {
-		return nil, err
-	}
-
-	c, err := NewConsumerGroupFromClient(groupID, client)
-	if err != nil {
-		_ = client.Close()
-		return nil, err
-	}
-
-	c.(*consumerGroup).ownClient = true
-	return c, nil
-}
-
-// NewConsumerGroupFromClient creates a new consumer group using the given client. It is still
-// necessary to call Close() on the underlying client when shutting down this consumer.
-// PLEASE NOTE: consumer groups can only re-use but not share clients.
-func NewConsumerGroupFromClient(groupID string, client Client) (ConsumerGroup, error) {
-	config := client.Config()
-	if !config.Version.IsAtLeast(V0_10_2_0) {
-		return nil, ConfigurationError("consumer groups require Version to be >= V0_10_2_0")
-	}
-
-	consumer, err := NewConsumerFromClient(client)
-	if err != nil {
-		return nil, err
-	}
-
-	return &consumerGroup{
-		client:   client,
-		consumer: consumer,
-		config:   config,
-		groupID:  groupID,
-		errors:   make(chan error, config.ChannelBufferSize),
-		closed:   make(chan none),
-	}, nil
-}
-
-// Errors implements ConsumerGroup.
-func (c *consumerGroup) Errors() <-chan error { return c.errors }
-
-// Close implements ConsumerGroup.
-func (c *consumerGroup) Close() (err error) {
-	c.closeOnce.Do(func() {
-		close(c.closed)
-
-		c.lock.Lock()
-		defer c.lock.Unlock()
-
-		// leave group
-		if e := c.leave(); e != nil {
-			err = e
-		}
-
-		// drain errors
-		go func() {
-			close(c.errors)
-		}()
-		for e := range c.errors {
-			err = e
-		}
-
-		if c.ownClient {
-			if e := c.client.Close(); e != nil {
-				err = e
-			}
-		}
-	})
-	return
-}
-
-// Consume implements ConsumerGroup.
-func (c *consumerGroup) Consume(ctx context.Context, topics []string, handler ConsumerGroupHandler) error {
-	// Ensure group is not closed
-	select {
-	case <-c.closed:
-		return ErrClosedConsumerGroup
-	default:
-	}
-
-	c.lock.Lock()
-	defer c.lock.Unlock()
-
-	// Quick exit when no topics are provided
-	if len(topics) == 0 {
-		return fmt.Errorf("no topics provided")
-	}
-
-	// Refresh metadata for requested topics
-	if err := c.client.RefreshMetadata(topics...); err != nil {
-		return err
-	}
-
-	// Get coordinator
-	coordinator, err := c.client.Coordinator(c.groupID)
-	if err != nil {
-		return err
-	}
-
-	// Init session
-	sess, err := c.newSession(ctx, coordinator, topics, handler, c.config.Consumer.Group.Rebalance.Retry.Max)
-	if err == ErrClosedClient {
-		return ErrClosedConsumerGroup
-	} else if err != nil {
-		return err
-	}
-
-	// Wait for session exit signal
-	<-sess.ctx.Done()
-
-	// Gracefully release session claims
-	return sess.release(true)
-}
-
-func (c *consumerGroup) newSession(ctx context.Context, coordinator *Broker, topics []string, handler ConsumerGroupHandler, retries int) (*consumerGroupSession, error) {
-	// Join consumer group
-	join, err := c.joinGroupRequest(coordinator, topics)
-	if err != nil {
-		_ = coordinator.Close()
-		return nil, err
-	}
-	switch join.Err {
-	case ErrNoError:
-		c.memberID = join.MemberId
-	case ErrUnknownMemberId, ErrIllegalGeneration: // reset member ID and retry immediately
-		c.memberID = ""
-		return c.newSession(ctx, coordinator, topics, handler, retries)
-	case ErrRebalanceInProgress: // retry after backoff
-		if retries <= 0 {
-			return nil, join.Err
-		}
-
-		select {
-		case <-c.closed:
-			return nil, ErrClosedConsumerGroup
-		case <-time.After(c.config.Consumer.Group.Rebalance.Retry.Backoff):
-		}
-
-		return c.newSession(ctx, coordinator, topics, handler, retries-1)
-	default:
-		return nil, join.Err
-	}
-
-	// Prepare distribution plan if we joined as the leader
-	var plan BalanceStrategyPlan
-	if join.LeaderId == join.MemberId {
-		members, err := join.GetMembers()
-		if err != nil {
-			return nil, err
-		}
-
-		plan, err = c.balance(members)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	// Sync consumer group
-	sync, err := c.syncGroupRequest(coordinator, plan, join.GenerationId)
-	if err != nil {
-		_ = coordinator.Close()
-		return nil, err
-	}
-	switch sync.Err {
-	case ErrNoError:
-	case ErrUnknownMemberId, ErrIllegalGeneration: // reset member ID and retry immediately
-		c.memberID = ""
-		return c.newSession(ctx, coordinator, topics, handler, retries)
-	case ErrRebalanceInProgress: // retry after backoff
-		if retries <= 0 {
-			return nil, sync.Err
-		}
-
-		select {
-		case <-c.closed:
-			return nil, ErrClosedConsumerGroup
-		case <-time.After(c.config.Consumer.Group.Rebalance.Retry.Backoff):
-		}
-
-		return c.newSession(ctx, coordinator, topics, handler, retries-1)
-	default:
-		return nil, sync.Err
-	}
-
-	// Retrieve and sort claims
-	var claims map[string][]int32
-	if len(sync.MemberAssignment) > 0 {
-		members, err := sync.GetMemberAssignment()
-		if err != nil {
-			return nil, err
-		}
-		claims = members.Topics
-
-		for _, partitions := range claims {
-			sort.Sort(int32Slice(partitions))
-		}
-	}
-
-	return newConsumerGroupSession(ctx, c, claims, join.MemberId, join.GenerationId, handler)
-}
-
-func (c *consumerGroup) joinGroupRequest(coordinator *Broker, topics []string) (*JoinGroupResponse, error) {
-	req := &JoinGroupRequest{
-		GroupId:        c.groupID,
-		MemberId:       c.memberID,
-		SessionTimeout: int32(c.config.Consumer.Group.Session.Timeout / time.Millisecond),
-		ProtocolType:   "consumer",
-	}
-	if c.config.Version.IsAtLeast(V0_10_1_0) {
-		req.Version = 1
-		req.RebalanceTimeout = int32(c.config.Consumer.Group.Rebalance.Timeout / time.Millisecond)
-	}
-
-	meta := &ConsumerGroupMemberMetadata{
-		Topics:   topics,
-		UserData: c.config.Consumer.Group.Member.UserData,
-	}
-	strategy := c.config.Consumer.Group.Rebalance.Strategy
-	if err := req.AddGroupProtocolMetadata(strategy.Name(), meta); err != nil {
-		return nil, err
-	}
-
-	return coordinator.JoinGroup(req)
-}
-
-func (c *consumerGroup) syncGroupRequest(coordinator *Broker, plan BalanceStrategyPlan, generationID int32) (*SyncGroupResponse, error) {
-	req := &SyncGroupRequest{
-		GroupId:      c.groupID,
-		MemberId:     c.memberID,
-		GenerationId: generationID,
-	}
-	for memberID, topics := range plan {
-		err := req.AddGroupAssignmentMember(memberID, &ConsumerGroupMemberAssignment{
-			Topics: topics,
-		})
-		if err != nil {
-			return nil, err
-		}
-	}
-	return coordinator.SyncGroup(req)
-}
-
-func (c *consumerGroup) heartbeatRequest(coordinator *Broker, memberID string, generationID int32) (*HeartbeatResponse, error) {
-	req := &HeartbeatRequest{
-		GroupId:      c.groupID,
-		MemberId:     memberID,
-		GenerationId: generationID,
-	}
-
-	return coordinator.Heartbeat(req)
-}
-
-func (c *consumerGroup) balance(members map[string]ConsumerGroupMemberMetadata) (BalanceStrategyPlan, error) {
-	topics := make(map[string][]int32)
-	for _, meta := range members {
-		for _, topic := range meta.Topics {
-			topics[topic] = nil
-		}
-	}
-
-	for topic := range topics {
-		partitions, err := c.client.Partitions(topic)
-		if err != nil {
-			return nil, err
-		}
-		topics[topic] = partitions
-	}
-
-	strategy := c.config.Consumer.Group.Rebalance.Strategy
-	return strategy.Plan(members, topics)
-}
-
-// Leaves the cluster, called by Close, protected by lock.
-func (c *consumerGroup) leave() error {
-	if c.memberID == "" {
-		return nil
-	}
-
-	coordinator, err := c.client.Coordinator(c.groupID)
-	if err != nil {
-		return err
-	}
-
-	resp, err := coordinator.LeaveGroup(&LeaveGroupRequest{
-		GroupId:  c.groupID,
-		MemberId: c.memberID,
-	})
-	if err != nil {
-		_ = coordinator.Close()
-		return err
-	}
-
-	// Unset memberID
-	c.memberID = ""
-
-	// Check response
-	switch resp.Err {
-	case ErrRebalanceInProgress, ErrUnknownMemberId, ErrNoError:
-		return nil
-	default:
-		return resp.Err
-	}
-}
-
-func (c *consumerGroup) handleError(err error, topic string, partition int32) {
-	select {
-	case <-c.closed:
-		return
-	default:
-	}
-
-	if _, ok := err.(*ConsumerError); !ok && topic != "" && partition > -1 {
-		err = &ConsumerError{
-			Topic:     topic,
-			Partition: partition,
-			Err:       err,
-		}
-	}
-
-	if c.config.Consumer.Return.Errors {
-		select {
-		case c.errors <- err:
-		default:
-		}
-	} else {
-		Logger.Println(err)
-	}
-}
-
-// --------------------------------------------------------------------
-
-// ConsumerGroupSession represents a consumer group member session.
-type ConsumerGroupSession interface {
-	// Claims returns information about the claimed partitions by topic.
-	Claims() map[string][]int32
-
-	// MemberID returns the cluster member ID.
-	MemberID() string
-
-	// GenerationID returns the current generation ID.
-	GenerationID() int32
-
-	// MarkOffset marks the provided offset, alongside a metadata string
-	// that represents the state of the partition consumer at that point in time. The
-	// metadata string can be used by another consumer to restore that state, so it
-	// can resume consumption.
-	//
-	// To follow upstream conventions, you are expected to mark the offset of the
-	// next message to read, not the last message read. Thus, when calling `MarkOffset`
-	// you should typically add one to the offset of the last consumed message.
-	//
-	// Note: calling MarkOffset does not necessarily commit the offset to the backend
-	// store immediately for efficiency reasons, and it may never be committed if
-	// your application crashes. This means that you may end up processing the same
-	// message twice, and your processing should ideally be idempotent.
-	MarkOffset(topic string, partition int32, offset int64, metadata string)
-
-	// ResetOffset resets to the provided offset, alongside a metadata string that
-	// represents the state of the partition consumer at that point in time. Reset
-	// acts as a counterpart to MarkOffset, the difference being that it allows to
-	// reset an offset to an earlier or smaller value, where MarkOffset only
-	// allows incrementing the offset. cf MarkOffset for more details.
-	ResetOffset(topic string, partition int32, offset int64, metadata string)
-
-	// MarkMessage marks a message as consumed.
-	MarkMessage(msg *ConsumerMessage, metadata string)
-
-	// Context returns the session context.
-	Context() context.Context
-}
-
-type consumerGroupSession struct {
-	parent       *consumerGroup
-	memberID     string
-	generationID int32
-	handler      ConsumerGroupHandler
-
-	claims  map[string][]int32
-	offsets *offsetManager
-	ctx     context.Context
-	cancel  func()
-
-	waitGroup       sync.WaitGroup
-	releaseOnce     sync.Once
-	hbDying, hbDead chan none
-}
-
-func newConsumerGroupSession(ctx context.Context, parent *consumerGroup, claims map[string][]int32, memberID string, generationID int32, handler ConsumerGroupHandler) (*consumerGroupSession, error) {
-	// init offset manager
-	offsets, err := newOffsetManagerFromClient(parent.groupID, memberID, generationID, parent.client)
-	if err != nil {
-		return nil, err
-	}
-
-	// init context
-	ctx, cancel := context.WithCancel(ctx)
-
-	// init session
-	sess := &consumerGroupSession{
-		parent:       parent,
-		memberID:     memberID,
-		generationID: generationID,
-		handler:      handler,
-		offsets:      offsets,
-		claims:       claims,
-		ctx:          ctx,
-		cancel:       cancel,
-		hbDying:      make(chan none),
-		hbDead:       make(chan none),
-	}
-
-	// start heartbeat loop
-	go sess.heartbeatLoop()
-
-	// create a POM for each claim
-	for topic, partitions := range claims {
-		for _, partition := range partitions {
-			pom, err := offsets.ManagePartition(topic, partition)
-			if err != nil {
-				_ = sess.release(false)
-				return nil, err
-			}
-
-			// handle POM errors
-			go func(topic string, partition int32) {
-				for err := range pom.Errors() {
-					sess.parent.handleError(err, topic, partition)
-				}
-			}(topic, partition)
-		}
-	}
-
-	// perform setup
-	if err := handler.Setup(sess); err != nil {
-		_ = sess.release(true)
-		return nil, err
-	}
-
-	// start consuming
-	for topic, partitions := range claims {
-		for _, partition := range partitions {
-			sess.waitGroup.Add(1)
-
-			go func(topic string, partition int32) {
-				defer sess.waitGroup.Done()
-
-				// cancel the as session as soon as the first
-				// goroutine exits
-				defer sess.cancel()
-
-				// consume a single topic/partition, blocking
-				sess.consume(topic, partition)
-			}(topic, partition)
-		}
-	}
-	return sess, nil
-}
-
-func (s *consumerGroupSession) Claims() map[string][]int32 { return s.claims }
-func (s *consumerGroupSession) MemberID() string           { return s.memberID }
-func (s *consumerGroupSession) GenerationID() int32        { return s.generationID }
-
-func (s *consumerGroupSession) MarkOffset(topic string, partition int32, offset int64, metadata string) {
-	if pom := s.offsets.findPOM(topic, partition); pom != nil {
-		pom.MarkOffset(offset, metadata)
-	}
-}
-
-func (s *consumerGroupSession) ResetOffset(topic string, partition int32, offset int64, metadata string) {
-	if pom := s.offsets.findPOM(topic, partition); pom != nil {
-		pom.ResetOffset(offset, metadata)
-	}
-}
-
-func (s *consumerGroupSession) MarkMessage(msg *ConsumerMessage, metadata string) {
-	s.MarkOffset(msg.Topic, msg.Partition, msg.Offset+1, metadata)
-}
-
-func (s *consumerGroupSession) Context() context.Context {
-	return s.ctx
-}
-
-func (s *consumerGroupSession) consume(topic string, partition int32) {
-	// quick exit if rebalance is due
-	select {
-	case <-s.ctx.Done():
-		return
-	case <-s.parent.closed:
-		return
-	default:
-	}
-
-	// get next offset
-	offset := s.parent.config.Consumer.Offsets.Initial
-	if pom := s.offsets.findPOM(topic, partition); pom != nil {
-		offset, _ = pom.NextOffset()
-	}
-
-	// create new claim
-	claim, err := newConsumerGroupClaim(s, topic, partition, offset)
-	if err != nil {
-		s.parent.handleError(err, topic, partition)
-		return
-	}
-
-	// handle errors
-	go func() {
-		for err := range claim.Errors() {
-			s.parent.handleError(err, topic, partition)
-		}
-	}()
-
-	// trigger close when session is done
-	go func() {
-		select {
-		case <-s.ctx.Done():
-		case <-s.parent.closed:
-		}
-		claim.AsyncClose()
-	}()
-
-	// start processing
-	if err := s.handler.ConsumeClaim(s, claim); err != nil {
-		s.parent.handleError(err, topic, partition)
-	}
-
-	// ensure consumer is closed & drained
-	claim.AsyncClose()
-	for _, err := range claim.waitClosed() {
-		s.parent.handleError(err, topic, partition)
-	}
-}
-
-func (s *consumerGroupSession) release(withCleanup bool) (err error) {
-	// signal release, stop heartbeat
-	s.cancel()
-
-	// wait for consumers to exit
-	s.waitGroup.Wait()
-
-	// perform release
-	s.releaseOnce.Do(func() {
-		if withCleanup {
-			if e := s.handler.Cleanup(s); e != nil {
-				s.parent.handleError(err, "", -1)
-				err = e
-			}
-		}
-
-		if e := s.offsets.Close(); e != nil {
-			err = e
-		}
-
-		close(s.hbDying)
-		<-s.hbDead
-	})
-
-	return
-}
-
-func (s *consumerGroupSession) heartbeatLoop() {
-	defer close(s.hbDead)
-	defer s.cancel() // trigger the end of the session on exit
-
-	pause := time.NewTicker(s.parent.config.Consumer.Group.Heartbeat.Interval)
-	defer pause.Stop()
-
-	retries := s.parent.config.Metadata.Retry.Max
-	for {
-		coordinator, err := s.parent.client.Coordinator(s.parent.groupID)
-		if err != nil {
-			if retries <= 0 {
-				s.parent.handleError(err, "", -1)
-				return
-			}
-
-			select {
-			case <-s.hbDying:
-				return
-			case <-time.After(s.parent.config.Metadata.Retry.Backoff):
-				retries--
-			}
-			continue
-		}
-
-		resp, err := s.parent.heartbeatRequest(coordinator, s.memberID, s.generationID)
-		if err != nil {
-			_ = coordinator.Close()
-
-			if retries <= 0 {
-				s.parent.handleError(err, "", -1)
-				return
-			}
-
-			retries--
-			continue
-		}
-
-		switch resp.Err {
-		case ErrNoError:
-			retries = s.parent.config.Metadata.Retry.Max
-		case ErrRebalanceInProgress, ErrUnknownMemberId, ErrIllegalGeneration:
-			return
-		default:
-			s.parent.handleError(err, "", -1)
-			return
-		}
-
-		select {
-		case <-pause.C:
-		case <-s.hbDying:
-			return
-		}
-	}
-}
-
-// --------------------------------------------------------------------
-
-// ConsumerGroupHandler instances are used to handle individual topic/partition claims.
-// It also provides hooks for your consumer group session life-cycle and allow you to
-// trigger logic before or after the consume loop(s).
-//
-// PLEASE NOTE that handlers are likely be called from several goroutines concurrently,
-// ensure that all state is safely protected against race conditions.
-type ConsumerGroupHandler interface {
-	// Setup is run at the beginning of a new session, before ConsumeClaim.
-	Setup(ConsumerGroupSession) error
-
-	// Cleanup is run at the end of a session, once all ConsumeClaim goroutines have exited
-	// but before the offsets are committed for the very last time.
-	Cleanup(ConsumerGroupSession) error
-
-	// ConsumeClaim must start a consumer loop of ConsumerGroupClaim's Messages().
-	// Once the Messages() channel is closed, the Handler must finish its processing
-	// loop and exit.
-	ConsumeClaim(ConsumerGroupSession, ConsumerGroupClaim) error
-}
-
-// ConsumerGroupClaim processes Kafka messages from a given topic and partition within a consumer group.
-type ConsumerGroupClaim interface {
-	// Topic returns the consumed topic name.
-	Topic() string
-
-	// Partition returns the consumed partition.
-	Partition() int32
-
-	// InitialOffset returns the initial offset that was used as a starting point for this claim.
-	InitialOffset() int64
-
-	// HighWaterMarkOffset returns the high water mark offset of the partition,
-	// i.e. the offset that will be used for the next message that will be produced.
-	// You can use this to determine how far behind the processing is.
-	HighWaterMarkOffset() int64
-
-	// Messages returns the read channel for the messages that are returned by
-	// the broker. The messages channel will be closed when a new rebalance cycle
-	// is due. You must finish processing and mark offsets within
-	// Config.Consumer.Group.Session.Timeout before the topic/partition is eventually
-	// re-assigned to another group member.
-	Messages() <-chan *ConsumerMessage
-}
-
-type consumerGroupClaim struct {
-	topic     string
-	partition int32
-	offset    int64
-	PartitionConsumer
-}
-
-func newConsumerGroupClaim(sess *consumerGroupSession, topic string, partition int32, offset int64) (*consumerGroupClaim, error) {
-	pcm, err := sess.parent.consumer.ConsumePartition(topic, partition, offset)
-	if err == ErrOffsetOutOfRange {
-		offset = sess.parent.config.Consumer.Offsets.Initial
-		pcm, err = sess.parent.consumer.ConsumePartition(topic, partition, offset)
-	}
-	if err != nil {
-		return nil, err
-	}
-
-	go func() {
-		for err := range pcm.Errors() {
-			sess.parent.handleError(err, topic, partition)
-		}
-	}()
-
-	return &consumerGroupClaim{
-		topic:             topic,
-		partition:         partition,
-		offset:            offset,
-		PartitionConsumer: pcm,
-	}, nil
-}
-
-func (c *consumerGroupClaim) Topic() string        { return c.topic }
-func (c *consumerGroupClaim) Partition() int32     { return c.partition }
-func (c *consumerGroupClaim) InitialOffset() int64 { return c.offset }
-
-// Drains messages and errors, ensures the claim is fully closed.
-func (c *consumerGroupClaim) waitClosed() (errs ConsumerErrors) {
-	go func() {
-		for range c.Messages() {
-		}
-	}()
-
-	for err := range c.Errors() {
-		errs = append(errs, err)
-	}
-	return
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/consumer_group_members.go b/vendor/gopkg.in/Shopify/sarama.v1/consumer_group_members.go
deleted file mode 100644
index 2d02cc3..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/consumer_group_members.go
+++ /dev/null
@@ -1,96 +0,0 @@
-package sarama
-
-//ConsumerGroupMemberMetadata holds the metadata for consumer group
-type ConsumerGroupMemberMetadata struct {
-	Version  int16
-	Topics   []string
-	UserData []byte
-}
-
-func (m *ConsumerGroupMemberMetadata) encode(pe packetEncoder) error {
-	pe.putInt16(m.Version)
-
-	if err := pe.putStringArray(m.Topics); err != nil {
-		return err
-	}
-
-	if err := pe.putBytes(m.UserData); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (m *ConsumerGroupMemberMetadata) decode(pd packetDecoder) (err error) {
-	if m.Version, err = pd.getInt16(); err != nil {
-		return
-	}
-
-	if m.Topics, err = pd.getStringArray(); err != nil {
-		return
-	}
-
-	if m.UserData, err = pd.getBytes(); err != nil {
-		return
-	}
-
-	return nil
-}
-
-//ConsumerGroupMemberAssignment holds the member assignment for a consume group
-type ConsumerGroupMemberAssignment struct {
-	Version  int16
-	Topics   map[string][]int32
-	UserData []byte
-}
-
-func (m *ConsumerGroupMemberAssignment) encode(pe packetEncoder) error {
-	pe.putInt16(m.Version)
-
-	if err := pe.putArrayLength(len(m.Topics)); err != nil {
-		return err
-	}
-
-	for topic, partitions := range m.Topics {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := pe.putInt32Array(partitions); err != nil {
-			return err
-		}
-	}
-
-	if err := pe.putBytes(m.UserData); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (m *ConsumerGroupMemberAssignment) decode(pd packetDecoder) (err error) {
-	if m.Version, err = pd.getInt16(); err != nil {
-		return
-	}
-
-	var topicLen int
-	if topicLen, err = pd.getArrayLength(); err != nil {
-		return
-	}
-
-	m.Topics = make(map[string][]int32, topicLen)
-	for i := 0; i < topicLen; i++ {
-		var topic string
-		if topic, err = pd.getString(); err != nil {
-			return
-		}
-		if m.Topics[topic], err = pd.getInt32Array(); err != nil {
-			return
-		}
-	}
-
-	if m.UserData, err = pd.getBytes(); err != nil {
-		return
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/consumer_metadata_request.go b/vendor/gopkg.in/Shopify/sarama.v1/consumer_metadata_request.go
deleted file mode 100644
index a8dcaef..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/consumer_metadata_request.go
+++ /dev/null
@@ -1,34 +0,0 @@
-package sarama
-
-//ConsumerMetadataRequest is used for metadata requests
-type ConsumerMetadataRequest struct {
-	ConsumerGroup string
-}
-
-func (r *ConsumerMetadataRequest) encode(pe packetEncoder) error {
-	tmp := new(FindCoordinatorRequest)
-	tmp.CoordinatorKey = r.ConsumerGroup
-	tmp.CoordinatorType = CoordinatorGroup
-	return tmp.encode(pe)
-}
-
-func (r *ConsumerMetadataRequest) decode(pd packetDecoder, version int16) (err error) {
-	tmp := new(FindCoordinatorRequest)
-	if err := tmp.decode(pd, version); err != nil {
-		return err
-	}
-	r.ConsumerGroup = tmp.CoordinatorKey
-	return nil
-}
-
-func (r *ConsumerMetadataRequest) key() int16 {
-	return 10
-}
-
-func (r *ConsumerMetadataRequest) version() int16 {
-	return 0
-}
-
-func (r *ConsumerMetadataRequest) requiredVersion() KafkaVersion {
-	return V0_8_2_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/consumer_metadata_response.go b/vendor/gopkg.in/Shopify/sarama.v1/consumer_metadata_response.go
deleted file mode 100644
index f39a871..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/consumer_metadata_response.go
+++ /dev/null
@@ -1,78 +0,0 @@
-package sarama
-
-import (
-	"net"
-	"strconv"
-)
-
-//ConsumerMetadataResponse holds the response for a consumer group meta data requests
-type ConsumerMetadataResponse struct {
-	Err             KError
-	Coordinator     *Broker
-	CoordinatorID   int32  // deprecated: use Coordinator.ID()
-	CoordinatorHost string // deprecated: use Coordinator.Addr()
-	CoordinatorPort int32  // deprecated: use Coordinator.Addr()
-}
-
-func (r *ConsumerMetadataResponse) decode(pd packetDecoder, version int16) (err error) {
-	tmp := new(FindCoordinatorResponse)
-
-	if err := tmp.decode(pd, version); err != nil {
-		return err
-	}
-
-	r.Err = tmp.Err
-
-	r.Coordinator = tmp.Coordinator
-	if tmp.Coordinator == nil {
-		return nil
-	}
-
-	// this can all go away in 2.0, but we have to fill in deprecated fields to maintain
-	// backwards compatibility
-	host, portstr, err := net.SplitHostPort(r.Coordinator.Addr())
-	if err != nil {
-		return err
-	}
-	port, err := strconv.ParseInt(portstr, 10, 32)
-	if err != nil {
-		return err
-	}
-	r.CoordinatorID = r.Coordinator.ID()
-	r.CoordinatorHost = host
-	r.CoordinatorPort = int32(port)
-
-	return nil
-}
-
-func (r *ConsumerMetadataResponse) encode(pe packetEncoder) error {
-	if r.Coordinator == nil {
-		r.Coordinator = new(Broker)
-		r.Coordinator.id = r.CoordinatorID
-		r.Coordinator.addr = net.JoinHostPort(r.CoordinatorHost, strconv.Itoa(int(r.CoordinatorPort)))
-	}
-
-	tmp := &FindCoordinatorResponse{
-		Version:     0,
-		Err:         r.Err,
-		Coordinator: r.Coordinator,
-	}
-
-	if err := tmp.encode(pe); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (r *ConsumerMetadataResponse) key() int16 {
-	return 10
-}
-
-func (r *ConsumerMetadataResponse) version() int16 {
-	return 0
-}
-
-func (r *ConsumerMetadataResponse) requiredVersion() KafkaVersion {
-	return V0_8_2_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/crc32_field.go b/vendor/gopkg.in/Shopify/sarama.v1/crc32_field.go
deleted file mode 100644
index 1f14443..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/crc32_field.go
+++ /dev/null
@@ -1,69 +0,0 @@
-package sarama
-
-import (
-	"encoding/binary"
-	"fmt"
-	"hash/crc32"
-)
-
-type crcPolynomial int8
-
-const (
-	crcIEEE crcPolynomial = iota
-	crcCastagnoli
-)
-
-var castagnoliTable = crc32.MakeTable(crc32.Castagnoli)
-
-// crc32Field implements the pushEncoder and pushDecoder interfaces for calculating CRC32s.
-type crc32Field struct {
-	startOffset int
-	polynomial  crcPolynomial
-}
-
-func (c *crc32Field) saveOffset(in int) {
-	c.startOffset = in
-}
-
-func (c *crc32Field) reserveLength() int {
-	return 4
-}
-
-func newCRC32Field(polynomial crcPolynomial) *crc32Field {
-	return &crc32Field{polynomial: polynomial}
-}
-
-func (c *crc32Field) run(curOffset int, buf []byte) error {
-	crc, err := c.crc(curOffset, buf)
-	if err != nil {
-		return err
-	}
-	binary.BigEndian.PutUint32(buf[c.startOffset:], crc)
-	return nil
-}
-
-func (c *crc32Field) check(curOffset int, buf []byte) error {
-	crc, err := c.crc(curOffset, buf)
-	if err != nil {
-		return err
-	}
-
-	expected := binary.BigEndian.Uint32(buf[c.startOffset:])
-	if crc != expected {
-		return PacketDecodingError{fmt.Sprintf("CRC didn't match expected %#x got %#x", expected, crc)}
-	}
-
-	return nil
-}
-func (c *crc32Field) crc(curOffset int, buf []byte) (uint32, error) {
-	var tab *crc32.Table
-	switch c.polynomial {
-	case crcIEEE:
-		tab = crc32.IEEETable
-	case crcCastagnoli:
-		tab = castagnoliTable
-	default:
-		return 0, PacketDecodingError{"invalid CRC type"}
-	}
-	return crc32.Checksum(buf[c.startOffset+4:curOffset], tab), nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/create_partitions_request.go b/vendor/gopkg.in/Shopify/sarama.v1/create_partitions_request.go
deleted file mode 100644
index af321e9..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/create_partitions_request.go
+++ /dev/null
@@ -1,121 +0,0 @@
-package sarama
-
-import "time"
-
-type CreatePartitionsRequest struct {
-	TopicPartitions map[string]*TopicPartition
-	Timeout         time.Duration
-	ValidateOnly    bool
-}
-
-func (c *CreatePartitionsRequest) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(c.TopicPartitions)); err != nil {
-		return err
-	}
-
-	for topic, partition := range c.TopicPartitions {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := partition.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	pe.putInt32(int32(c.Timeout / time.Millisecond))
-
-	pe.putBool(c.ValidateOnly)
-
-	return nil
-}
-
-func (c *CreatePartitionsRequest) decode(pd packetDecoder, version int16) (err error) {
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	c.TopicPartitions = make(map[string]*TopicPartition, n)
-	for i := 0; i < n; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		c.TopicPartitions[topic] = new(TopicPartition)
-		if err := c.TopicPartitions[topic].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	timeout, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	c.Timeout = time.Duration(timeout) * time.Millisecond
-
-	if c.ValidateOnly, err = pd.getBool(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (r *CreatePartitionsRequest) key() int16 {
-	return 37
-}
-
-func (r *CreatePartitionsRequest) version() int16 {
-	return 0
-}
-
-func (r *CreatePartitionsRequest) requiredVersion() KafkaVersion {
-	return V1_0_0_0
-}
-
-type TopicPartition struct {
-	Count      int32
-	Assignment [][]int32
-}
-
-func (t *TopicPartition) encode(pe packetEncoder) error {
-	pe.putInt32(t.Count)
-
-	if len(t.Assignment) == 0 {
-		pe.putInt32(-1)
-		return nil
-	}
-
-	if err := pe.putArrayLength(len(t.Assignment)); err != nil {
-		return err
-	}
-
-	for _, assign := range t.Assignment {
-		if err := pe.putInt32Array(assign); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (t *TopicPartition) decode(pd packetDecoder, version int16) (err error) {
-	if t.Count, err = pd.getInt32(); err != nil {
-		return err
-	}
-
-	n, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	if n <= 0 {
-		return nil
-	}
-	t.Assignment = make([][]int32, n)
-
-	for i := 0; i < int(n); i++ {
-		if t.Assignment[i], err = pd.getInt32Array(); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/create_partitions_response.go b/vendor/gopkg.in/Shopify/sarama.v1/create_partitions_response.go
deleted file mode 100644
index abd621c..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/create_partitions_response.go
+++ /dev/null
@@ -1,94 +0,0 @@
-package sarama
-
-import "time"
-
-type CreatePartitionsResponse struct {
-	ThrottleTime         time.Duration
-	TopicPartitionErrors map[string]*TopicPartitionError
-}
-
-func (c *CreatePartitionsResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(c.ThrottleTime / time.Millisecond))
-	if err := pe.putArrayLength(len(c.TopicPartitionErrors)); err != nil {
-		return err
-	}
-
-	for topic, partitionError := range c.TopicPartitionErrors {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := partitionError.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (c *CreatePartitionsResponse) decode(pd packetDecoder, version int16) (err error) {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	c.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	c.TopicPartitionErrors = make(map[string]*TopicPartitionError, n)
-	for i := 0; i < n; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		c.TopicPartitionErrors[topic] = new(TopicPartitionError)
-		if err := c.TopicPartitionErrors[topic].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *CreatePartitionsResponse) key() int16 {
-	return 37
-}
-
-func (r *CreatePartitionsResponse) version() int16 {
-	return 0
-}
-
-func (r *CreatePartitionsResponse) requiredVersion() KafkaVersion {
-	return V1_0_0_0
-}
-
-type TopicPartitionError struct {
-	Err    KError
-	ErrMsg *string
-}
-
-func (t *TopicPartitionError) encode(pe packetEncoder) error {
-	pe.putInt16(int16(t.Err))
-
-	if err := pe.putNullableString(t.ErrMsg); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (t *TopicPartitionError) decode(pd packetDecoder, version int16) (err error) {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	t.Err = KError(kerr)
-
-	if t.ErrMsg, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/create_topics_request.go b/vendor/gopkg.in/Shopify/sarama.v1/create_topics_request.go
deleted file mode 100644
index 709c0a4..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/create_topics_request.go
+++ /dev/null
@@ -1,174 +0,0 @@
-package sarama
-
-import (
-	"time"
-)
-
-type CreateTopicsRequest struct {
-	Version int16
-
-	TopicDetails map[string]*TopicDetail
-	Timeout      time.Duration
-	ValidateOnly bool
-}
-
-func (c *CreateTopicsRequest) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(c.TopicDetails)); err != nil {
-		return err
-	}
-	for topic, detail := range c.TopicDetails {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := detail.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	pe.putInt32(int32(c.Timeout / time.Millisecond))
-
-	if c.Version >= 1 {
-		pe.putBool(c.ValidateOnly)
-	}
-
-	return nil
-}
-
-func (c *CreateTopicsRequest) decode(pd packetDecoder, version int16) (err error) {
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	c.TopicDetails = make(map[string]*TopicDetail, n)
-
-	for i := 0; i < n; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		c.TopicDetails[topic] = new(TopicDetail)
-		if err = c.TopicDetails[topic].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	timeout, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	c.Timeout = time.Duration(timeout) * time.Millisecond
-
-	if version >= 1 {
-		c.ValidateOnly, err = pd.getBool()
-		if err != nil {
-			return err
-		}
-
-		c.Version = version
-	}
-
-	return nil
-}
-
-func (c *CreateTopicsRequest) key() int16 {
-	return 19
-}
-
-func (c *CreateTopicsRequest) version() int16 {
-	return c.Version
-}
-
-func (c *CreateTopicsRequest) requiredVersion() KafkaVersion {
-	switch c.Version {
-	case 2:
-		return V1_0_0_0
-	case 1:
-		return V0_11_0_0
-	default:
-		return V0_10_1_0
-	}
-}
-
-type TopicDetail struct {
-	NumPartitions     int32
-	ReplicationFactor int16
-	ReplicaAssignment map[int32][]int32
-	ConfigEntries     map[string]*string
-}
-
-func (t *TopicDetail) encode(pe packetEncoder) error {
-	pe.putInt32(t.NumPartitions)
-	pe.putInt16(t.ReplicationFactor)
-
-	if err := pe.putArrayLength(len(t.ReplicaAssignment)); err != nil {
-		return err
-	}
-	for partition, assignment := range t.ReplicaAssignment {
-		pe.putInt32(partition)
-		if err := pe.putInt32Array(assignment); err != nil {
-			return err
-		}
-	}
-
-	if err := pe.putArrayLength(len(t.ConfigEntries)); err != nil {
-		return err
-	}
-	for configKey, configValue := range t.ConfigEntries {
-		if err := pe.putString(configKey); err != nil {
-			return err
-		}
-		if err := pe.putNullableString(configValue); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (t *TopicDetail) decode(pd packetDecoder, version int16) (err error) {
-	if t.NumPartitions, err = pd.getInt32(); err != nil {
-		return err
-	}
-	if t.ReplicationFactor, err = pd.getInt16(); err != nil {
-		return err
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	if n > 0 {
-		t.ReplicaAssignment = make(map[int32][]int32, n)
-		for i := 0; i < n; i++ {
-			replica, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-			if t.ReplicaAssignment[replica], err = pd.getInt32Array(); err != nil {
-				return err
-			}
-		}
-	}
-
-	n, err = pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	if n > 0 {
-		t.ConfigEntries = make(map[string]*string, n)
-		for i := 0; i < n; i++ {
-			configKey, err := pd.getString()
-			if err != nil {
-				return err
-			}
-			if t.ConfigEntries[configKey], err = pd.getNullableString(); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/create_topics_response.go b/vendor/gopkg.in/Shopify/sarama.v1/create_topics_response.go
deleted file mode 100644
index 66207e0..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/create_topics_response.go
+++ /dev/null
@@ -1,112 +0,0 @@
-package sarama
-
-import "time"
-
-type CreateTopicsResponse struct {
-	Version      int16
-	ThrottleTime time.Duration
-	TopicErrors  map[string]*TopicError
-}
-
-func (c *CreateTopicsResponse) encode(pe packetEncoder) error {
-	if c.Version >= 2 {
-		pe.putInt32(int32(c.ThrottleTime / time.Millisecond))
-	}
-
-	if err := pe.putArrayLength(len(c.TopicErrors)); err != nil {
-		return err
-	}
-	for topic, topicError := range c.TopicErrors {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := topicError.encode(pe, c.Version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (c *CreateTopicsResponse) decode(pd packetDecoder, version int16) (err error) {
-	c.Version = version
-
-	if version >= 2 {
-		throttleTime, err := pd.getInt32()
-		if err != nil {
-			return err
-		}
-		c.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	c.TopicErrors = make(map[string]*TopicError, n)
-	for i := 0; i < n; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		c.TopicErrors[topic] = new(TopicError)
-		if err := c.TopicErrors[topic].decode(pd, version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (c *CreateTopicsResponse) key() int16 {
-	return 19
-}
-
-func (c *CreateTopicsResponse) version() int16 {
-	return c.Version
-}
-
-func (c *CreateTopicsResponse) requiredVersion() KafkaVersion {
-	switch c.Version {
-	case 2:
-		return V1_0_0_0
-	case 1:
-		return V0_11_0_0
-	default:
-		return V0_10_1_0
-	}
-}
-
-type TopicError struct {
-	Err    KError
-	ErrMsg *string
-}
-
-func (t *TopicError) encode(pe packetEncoder, version int16) error {
-	pe.putInt16(int16(t.Err))
-
-	if version >= 1 {
-		if err := pe.putNullableString(t.ErrMsg); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (t *TopicError) decode(pd packetDecoder, version int16) (err error) {
-	kErr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	t.Err = KError(kErr)
-
-	if version >= 1 {
-		if t.ErrMsg, err = pd.getNullableString(); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/decompress.go b/vendor/gopkg.in/Shopify/sarama.v1/decompress.go
deleted file mode 100644
index eaccbfc..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/decompress.go
+++ /dev/null
@@ -1,63 +0,0 @@
-package sarama
-
-import (
-	"bytes"
-	"compress/gzip"
-	"fmt"
-	"io/ioutil"
-	"sync"
-
-	"github.com/eapache/go-xerial-snappy"
-	"github.com/pierrec/lz4"
-)
-
-var (
-	lz4ReaderPool = sync.Pool{
-		New: func() interface{} {
-			return lz4.NewReader(nil)
-		},
-	}
-
-	gzipReaderPool sync.Pool
-)
-
-func decompress(cc CompressionCodec, data []byte) ([]byte, error) {
-	switch cc {
-	case CompressionNone:
-		return data, nil
-	case CompressionGZIP:
-		var (
-			err        error
-			reader     *gzip.Reader
-			readerIntf = gzipReaderPool.Get()
-		)
-		if readerIntf != nil {
-			reader = readerIntf.(*gzip.Reader)
-		} else {
-			reader, err = gzip.NewReader(bytes.NewReader(data))
-			if err != nil {
-				return nil, err
-			}
-		}
-
-		defer gzipReaderPool.Put(reader)
-
-		if err := reader.Reset(bytes.NewReader(data)); err != nil {
-			return nil, err
-		}
-
-		return ioutil.ReadAll(reader)
-	case CompressionSnappy:
-		return snappy.Decode(data)
-	case CompressionLZ4:
-		reader := lz4ReaderPool.Get().(*lz4.Reader)
-		defer lz4ReaderPool.Put(reader)
-
-		reader.Reset(bytes.NewReader(data))
-		return ioutil.ReadAll(reader)
-	case CompressionZSTD:
-		return zstdDecompress(nil, data)
-	default:
-		return nil, PacketDecodingError{fmt.Sprintf("invalid compression specified (%d)", cc)}
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/delete_groups_request.go b/vendor/gopkg.in/Shopify/sarama.v1/delete_groups_request.go
deleted file mode 100644
index 305a324..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/delete_groups_request.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package sarama
-
-type DeleteGroupsRequest struct {
-	Groups []string
-}
-
-func (r *DeleteGroupsRequest) encode(pe packetEncoder) error {
-	return pe.putStringArray(r.Groups)
-}
-
-func (r *DeleteGroupsRequest) decode(pd packetDecoder, version int16) (err error) {
-	r.Groups, err = pd.getStringArray()
-	return
-}
-
-func (r *DeleteGroupsRequest) key() int16 {
-	return 42
-}
-
-func (r *DeleteGroupsRequest) version() int16 {
-	return 0
-}
-
-func (r *DeleteGroupsRequest) requiredVersion() KafkaVersion {
-	return V1_1_0_0
-}
-
-func (r *DeleteGroupsRequest) AddGroup(group string) {
-	r.Groups = append(r.Groups, group)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/delete_groups_response.go b/vendor/gopkg.in/Shopify/sarama.v1/delete_groups_response.go
deleted file mode 100644
index c067ebb..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/delete_groups_response.go
+++ /dev/null
@@ -1,70 +0,0 @@
-package sarama
-
-import (
-	"time"
-)
-
-type DeleteGroupsResponse struct {
-	ThrottleTime    time.Duration
-	GroupErrorCodes map[string]KError
-}
-
-func (r *DeleteGroupsResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(r.ThrottleTime / time.Millisecond))
-
-	if err := pe.putArrayLength(len(r.GroupErrorCodes)); err != nil {
-		return err
-	}
-	for groupID, errorCode := range r.GroupErrorCodes {
-		if err := pe.putString(groupID); err != nil {
-			return err
-		}
-		pe.putInt16(int16(errorCode))
-	}
-
-	return nil
-}
-
-func (r *DeleteGroupsResponse) decode(pd packetDecoder, version int16) error {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	r.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if n == 0 {
-		return nil
-	}
-
-	r.GroupErrorCodes = make(map[string]KError, n)
-	for i := 0; i < n; i++ {
-		groupID, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		errorCode, err := pd.getInt16()
-		if err != nil {
-			return err
-		}
-
-		r.GroupErrorCodes[groupID] = KError(errorCode)
-	}
-
-	return nil
-}
-
-func (r *DeleteGroupsResponse) key() int16 {
-	return 42
-}
-
-func (r *DeleteGroupsResponse) version() int16 {
-	return 0
-}
-
-func (r *DeleteGroupsResponse) requiredVersion() KafkaVersion {
-	return V1_1_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/delete_records_request.go b/vendor/gopkg.in/Shopify/sarama.v1/delete_records_request.go
deleted file mode 100644
index 93efafd..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/delete_records_request.go
+++ /dev/null
@@ -1,126 +0,0 @@
-package sarama
-
-import (
-	"sort"
-	"time"
-)
-
-// request message format is:
-// [topic] timeout(int32)
-// where topic is:
-//  name(string) [partition]
-// where partition is:
-//  id(int32) offset(int64)
-
-type DeleteRecordsRequest struct {
-	Topics  map[string]*DeleteRecordsRequestTopic
-	Timeout time.Duration
-}
-
-func (d *DeleteRecordsRequest) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(d.Topics)); err != nil {
-		return err
-	}
-	keys := make([]string, 0, len(d.Topics))
-	for topic := range d.Topics {
-		keys = append(keys, topic)
-	}
-	sort.Strings(keys)
-	for _, topic := range keys {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := d.Topics[topic].encode(pe); err != nil {
-			return err
-		}
-	}
-	pe.putInt32(int32(d.Timeout / time.Millisecond))
-
-	return nil
-}
-
-func (d *DeleteRecordsRequest) decode(pd packetDecoder, version int16) error {
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	if n > 0 {
-		d.Topics = make(map[string]*DeleteRecordsRequestTopic, n)
-		for i := 0; i < n; i++ {
-			topic, err := pd.getString()
-			if err != nil {
-				return err
-			}
-			details := new(DeleteRecordsRequestTopic)
-			if err = details.decode(pd, version); err != nil {
-				return err
-			}
-			d.Topics[topic] = details
-		}
-	}
-
-	timeout, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	d.Timeout = time.Duration(timeout) * time.Millisecond
-
-	return nil
-}
-
-func (d *DeleteRecordsRequest) key() int16 {
-	return 21
-}
-
-func (d *DeleteRecordsRequest) version() int16 {
-	return 0
-}
-
-func (d *DeleteRecordsRequest) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
-
-type DeleteRecordsRequestTopic struct {
-	PartitionOffsets map[int32]int64 // partition => offset
-}
-
-func (t *DeleteRecordsRequestTopic) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(t.PartitionOffsets)); err != nil {
-		return err
-	}
-	keys := make([]int32, 0, len(t.PartitionOffsets))
-	for partition := range t.PartitionOffsets {
-		keys = append(keys, partition)
-	}
-	sort.Slice(keys, func(i, j int) bool { return keys[i] < keys[j] })
-	for _, partition := range keys {
-		pe.putInt32(partition)
-		pe.putInt64(t.PartitionOffsets[partition])
-	}
-	return nil
-}
-
-func (t *DeleteRecordsRequestTopic) decode(pd packetDecoder, version int16) error {
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	if n > 0 {
-		t.PartitionOffsets = make(map[int32]int64, n)
-		for i := 0; i < n; i++ {
-			partition, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-			offset, err := pd.getInt64()
-			if err != nil {
-				return err
-			}
-			t.PartitionOffsets[partition] = offset
-		}
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/delete_records_response.go b/vendor/gopkg.in/Shopify/sarama.v1/delete_records_response.go
deleted file mode 100644
index 733a58b..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/delete_records_response.go
+++ /dev/null
@@ -1,158 +0,0 @@
-package sarama
-
-import (
-	"sort"
-	"time"
-)
-
-// response message format is:
-// throttleMs(int32) [topic]
-// where topic is:
-//  name(string) [partition]
-// where partition is:
-//  id(int32) low_watermark(int64) error_code(int16)
-
-type DeleteRecordsResponse struct {
-	Version      int16
-	ThrottleTime time.Duration
-	Topics       map[string]*DeleteRecordsResponseTopic
-}
-
-func (d *DeleteRecordsResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(d.ThrottleTime / time.Millisecond))
-
-	if err := pe.putArrayLength(len(d.Topics)); err != nil {
-		return err
-	}
-	keys := make([]string, 0, len(d.Topics))
-	for topic := range d.Topics {
-		keys = append(keys, topic)
-	}
-	sort.Strings(keys)
-	for _, topic := range keys {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := d.Topics[topic].encode(pe); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (d *DeleteRecordsResponse) decode(pd packetDecoder, version int16) error {
-	d.Version = version
-
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	d.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	if n > 0 {
-		d.Topics = make(map[string]*DeleteRecordsResponseTopic, n)
-		for i := 0; i < n; i++ {
-			topic, err := pd.getString()
-			if err != nil {
-				return err
-			}
-			details := new(DeleteRecordsResponseTopic)
-			if err = details.decode(pd, version); err != nil {
-				return err
-			}
-			d.Topics[topic] = details
-		}
-	}
-
-	return nil
-}
-
-func (d *DeleteRecordsResponse) key() int16 {
-	return 21
-}
-
-func (d *DeleteRecordsResponse) version() int16 {
-	return 0
-}
-
-func (d *DeleteRecordsResponse) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
-
-type DeleteRecordsResponseTopic struct {
-	Partitions map[int32]*DeleteRecordsResponsePartition
-}
-
-func (t *DeleteRecordsResponseTopic) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(t.Partitions)); err != nil {
-		return err
-	}
-	keys := make([]int32, 0, len(t.Partitions))
-	for partition := range t.Partitions {
-		keys = append(keys, partition)
-	}
-	sort.Slice(keys, func(i, j int) bool { return keys[i] < keys[j] })
-	for _, partition := range keys {
-		pe.putInt32(partition)
-		if err := t.Partitions[partition].encode(pe); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (t *DeleteRecordsResponseTopic) decode(pd packetDecoder, version int16) error {
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	if n > 0 {
-		t.Partitions = make(map[int32]*DeleteRecordsResponsePartition, n)
-		for i := 0; i < n; i++ {
-			partition, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-			details := new(DeleteRecordsResponsePartition)
-			if err = details.decode(pd, version); err != nil {
-				return err
-			}
-			t.Partitions[partition] = details
-		}
-	}
-
-	return nil
-}
-
-type DeleteRecordsResponsePartition struct {
-	LowWatermark int64
-	Err          KError
-}
-
-func (t *DeleteRecordsResponsePartition) encode(pe packetEncoder) error {
-	pe.putInt64(t.LowWatermark)
-	pe.putInt16(int16(t.Err))
-	return nil
-}
-
-func (t *DeleteRecordsResponsePartition) decode(pd packetDecoder, version int16) error {
-	lowWatermark, err := pd.getInt64()
-	if err != nil {
-		return err
-	}
-	t.LowWatermark = lowWatermark
-
-	kErr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	t.Err = KError(kErr)
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/delete_topics_request.go b/vendor/gopkg.in/Shopify/sarama.v1/delete_topics_request.go
deleted file mode 100644
index 911f67d..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/delete_topics_request.go
+++ /dev/null
@@ -1,48 +0,0 @@
-package sarama
-
-import "time"
-
-type DeleteTopicsRequest struct {
-	Version int16
-	Topics  []string
-	Timeout time.Duration
-}
-
-func (d *DeleteTopicsRequest) encode(pe packetEncoder) error {
-	if err := pe.putStringArray(d.Topics); err != nil {
-		return err
-	}
-	pe.putInt32(int32(d.Timeout / time.Millisecond))
-
-	return nil
-}
-
-func (d *DeleteTopicsRequest) decode(pd packetDecoder, version int16) (err error) {
-	if d.Topics, err = pd.getStringArray(); err != nil {
-		return err
-	}
-	timeout, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	d.Timeout = time.Duration(timeout) * time.Millisecond
-	d.Version = version
-	return nil
-}
-
-func (d *DeleteTopicsRequest) key() int16 {
-	return 20
-}
-
-func (d *DeleteTopicsRequest) version() int16 {
-	return d.Version
-}
-
-func (d *DeleteTopicsRequest) requiredVersion() KafkaVersion {
-	switch d.Version {
-	case 1:
-		return V0_11_0_0
-	default:
-		return V0_10_1_0
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/delete_topics_response.go b/vendor/gopkg.in/Shopify/sarama.v1/delete_topics_response.go
deleted file mode 100644
index 3422546..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/delete_topics_response.go
+++ /dev/null
@@ -1,78 +0,0 @@
-package sarama
-
-import "time"
-
-type DeleteTopicsResponse struct {
-	Version         int16
-	ThrottleTime    time.Duration
-	TopicErrorCodes map[string]KError
-}
-
-func (d *DeleteTopicsResponse) encode(pe packetEncoder) error {
-	if d.Version >= 1 {
-		pe.putInt32(int32(d.ThrottleTime / time.Millisecond))
-	}
-
-	if err := pe.putArrayLength(len(d.TopicErrorCodes)); err != nil {
-		return err
-	}
-	for topic, errorCode := range d.TopicErrorCodes {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		pe.putInt16(int16(errorCode))
-	}
-
-	return nil
-}
-
-func (d *DeleteTopicsResponse) decode(pd packetDecoder, version int16) (err error) {
-	if version >= 1 {
-		throttleTime, err := pd.getInt32()
-		if err != nil {
-			return err
-		}
-		d.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-		d.Version = version
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	d.TopicErrorCodes = make(map[string]KError, n)
-
-	for i := 0; i < n; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		errorCode, err := pd.getInt16()
-		if err != nil {
-			return err
-		}
-
-		d.TopicErrorCodes[topic] = KError(errorCode)
-	}
-
-	return nil
-}
-
-func (d *DeleteTopicsResponse) key() int16 {
-	return 20
-}
-
-func (d *DeleteTopicsResponse) version() int16 {
-	return d.Version
-}
-
-func (d *DeleteTopicsResponse) requiredVersion() KafkaVersion {
-	switch d.Version {
-	case 1:
-		return V0_11_0_0
-	default:
-		return V0_10_1_0
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/describe_configs_request.go b/vendor/gopkg.in/Shopify/sarama.v1/describe_configs_request.go
deleted file mode 100644
index ccb587b..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/describe_configs_request.go
+++ /dev/null
@@ -1,112 +0,0 @@
-package sarama
-
-type DescribeConfigsRequest struct {
-	Version         int16
-	Resources       []*ConfigResource
-	IncludeSynonyms bool
-}
-
-type ConfigResource struct {
-	Type        ConfigResourceType
-	Name        string
-	ConfigNames []string
-}
-
-func (r *DescribeConfigsRequest) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(r.Resources)); err != nil {
-		return err
-	}
-
-	for _, c := range r.Resources {
-		pe.putInt8(int8(c.Type))
-		if err := pe.putString(c.Name); err != nil {
-			return err
-		}
-
-		if len(c.ConfigNames) == 0 {
-			pe.putInt32(-1)
-			continue
-		}
-		if err := pe.putStringArray(c.ConfigNames); err != nil {
-			return err
-		}
-	}
-
-	if r.Version >= 1 {
-		pe.putBool(r.IncludeSynonyms)
-	}
-
-	return nil
-}
-
-func (r *DescribeConfigsRequest) decode(pd packetDecoder, version int16) (err error) {
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Resources = make([]*ConfigResource, n)
-
-	for i := 0; i < n; i++ {
-		r.Resources[i] = &ConfigResource{}
-		t, err := pd.getInt8()
-		if err != nil {
-			return err
-		}
-		r.Resources[i].Type = ConfigResourceType(t)
-		name, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		r.Resources[i].Name = name
-
-		confLength, err := pd.getArrayLength()
-
-		if err != nil {
-			return err
-		}
-
-		if confLength == -1 {
-			continue
-		}
-
-		cfnames := make([]string, confLength)
-		for i := 0; i < confLength; i++ {
-			s, err := pd.getString()
-			if err != nil {
-				return err
-			}
-			cfnames[i] = s
-		}
-		r.Resources[i].ConfigNames = cfnames
-	}
-	r.Version = version
-	if r.Version >= 1 {
-		b, err := pd.getBool()
-		if err != nil {
-			return err
-		}
-		r.IncludeSynonyms = b
-	}
-
-	return nil
-}
-
-func (r *DescribeConfigsRequest) key() int16 {
-	return 32
-}
-
-func (r *DescribeConfigsRequest) version() int16 {
-	return r.Version
-}
-
-func (r *DescribeConfigsRequest) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V1_1_0_0
-	case 2:
-		return V2_0_0_0
-	default:
-		return V0_11_0_0
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/describe_configs_response.go b/vendor/gopkg.in/Shopify/sarama.v1/describe_configs_response.go
deleted file mode 100644
index 63fb6ea..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/describe_configs_response.go
+++ /dev/null
@@ -1,320 +0,0 @@
-package sarama
-
-import (
-	"fmt"
-	"time"
-)
-
-type ConfigSource int8
-
-func (s ConfigSource) String() string {
-	switch s {
-	case SourceUnknown:
-		return "Unknown"
-	case SourceTopic:
-		return "Topic"
-	case SourceDynamicBroker:
-		return "DynamicBroker"
-	case SourceDynamicDefaultBroker:
-		return "DynamicDefaultBroker"
-	case SourceStaticBroker:
-		return "StaticBroker"
-	case SourceDefault:
-		return "Default"
-	}
-	return fmt.Sprintf("Source Invalid: %d", int(s))
-}
-
-const (
-	SourceUnknown              ConfigSource = 0
-	SourceTopic                ConfigSource = 1
-	SourceDynamicBroker        ConfigSource = 2
-	SourceDynamicDefaultBroker ConfigSource = 3
-	SourceStaticBroker         ConfigSource = 4
-	SourceDefault              ConfigSource = 5
-)
-
-type DescribeConfigsResponse struct {
-	Version      int16
-	ThrottleTime time.Duration
-	Resources    []*ResourceResponse
-}
-
-type ResourceResponse struct {
-	ErrorCode int16
-	ErrorMsg  string
-	Type      ConfigResourceType
-	Name      string
-	Configs   []*ConfigEntry
-}
-
-type ConfigEntry struct {
-	Name      string
-	Value     string
-	ReadOnly  bool
-	Default   bool
-	Source    ConfigSource
-	Sensitive bool
-	Synonyms  []*ConfigSynonym
-}
-
-type ConfigSynonym struct {
-	ConfigName  string
-	ConfigValue string
-	Source      ConfigSource
-}
-
-func (r *DescribeConfigsResponse) encode(pe packetEncoder) (err error) {
-	pe.putInt32(int32(r.ThrottleTime / time.Millisecond))
-	if err = pe.putArrayLength(len(r.Resources)); err != nil {
-		return err
-	}
-
-	for _, c := range r.Resources {
-		if err = c.encode(pe, r.Version); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *DescribeConfigsResponse) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	r.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Resources = make([]*ResourceResponse, n)
-	for i := 0; i < n; i++ {
-		rr := &ResourceResponse{}
-		if err := rr.decode(pd, version); err != nil {
-			return err
-		}
-		r.Resources[i] = rr
-	}
-
-	return nil
-}
-
-func (r *DescribeConfigsResponse) key() int16 {
-	return 32
-}
-
-func (r *DescribeConfigsResponse) version() int16 {
-	return r.Version
-}
-
-func (r *DescribeConfigsResponse) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V1_0_0_0
-	case 2:
-		return V2_0_0_0
-	default:
-		return V0_11_0_0
-	}
-}
-
-func (r *ResourceResponse) encode(pe packetEncoder, version int16) (err error) {
-	pe.putInt16(r.ErrorCode)
-
-	if err = pe.putString(r.ErrorMsg); err != nil {
-		return err
-	}
-
-	pe.putInt8(int8(r.Type))
-
-	if err = pe.putString(r.Name); err != nil {
-		return err
-	}
-
-	if err = pe.putArrayLength(len(r.Configs)); err != nil {
-		return err
-	}
-
-	for _, c := range r.Configs {
-		if err = c.encode(pe, version); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (r *ResourceResponse) decode(pd packetDecoder, version int16) (err error) {
-	ec, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	r.ErrorCode = ec
-
-	em, err := pd.getString()
-	if err != nil {
-		return err
-	}
-	r.ErrorMsg = em
-
-	t, err := pd.getInt8()
-	if err != nil {
-		return err
-	}
-	r.Type = ConfigResourceType(t)
-
-	name, err := pd.getString()
-	if err != nil {
-		return err
-	}
-	r.Name = name
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Configs = make([]*ConfigEntry, n)
-	for i := 0; i < n; i++ {
-		c := &ConfigEntry{}
-		if err := c.decode(pd, version); err != nil {
-			return err
-		}
-		r.Configs[i] = c
-	}
-	return nil
-}
-
-func (r *ConfigEntry) encode(pe packetEncoder, version int16) (err error) {
-	if err = pe.putString(r.Name); err != nil {
-		return err
-	}
-
-	if err = pe.putString(r.Value); err != nil {
-		return err
-	}
-
-	pe.putBool(r.ReadOnly)
-
-	if version <= 0 {
-		pe.putBool(r.Default)
-		pe.putBool(r.Sensitive)
-	} else {
-		pe.putInt8(int8(r.Source))
-		pe.putBool(r.Sensitive)
-
-		if err := pe.putArrayLength(len(r.Synonyms)); err != nil {
-			return err
-		}
-		for _, c := range r.Synonyms {
-			if err = c.encode(pe, version); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-//https://cwiki.apache.org/confluence/display/KAFKA/KIP-226+-+Dynamic+Broker+Configuration
-func (r *ConfigEntry) decode(pd packetDecoder, version int16) (err error) {
-	if version == 0 {
-		r.Source = SourceUnknown
-	}
-	name, err := pd.getString()
-	if err != nil {
-		return err
-	}
-	r.Name = name
-
-	value, err := pd.getString()
-	if err != nil {
-		return err
-	}
-	r.Value = value
-
-	read, err := pd.getBool()
-	if err != nil {
-		return err
-	}
-	r.ReadOnly = read
-
-	if version == 0 {
-		defaultB, err := pd.getBool()
-		if err != nil {
-			return err
-		}
-		r.Default = defaultB
-	} else {
-		source, err := pd.getInt8()
-		if err != nil {
-			return err
-		}
-		r.Source = ConfigSource(source)
-	}
-
-	sensitive, err := pd.getBool()
-	if err != nil {
-		return err
-	}
-	r.Sensitive = sensitive
-
-	if version > 0 {
-		n, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-		r.Synonyms = make([]*ConfigSynonym, n)
-
-		for i := 0; i < n; i++ {
-			s := &ConfigSynonym{}
-			if err := s.decode(pd, version); err != nil {
-				return err
-			}
-			r.Synonyms[i] = s
-		}
-
-	}
-	return nil
-}
-
-func (c *ConfigSynonym) encode(pe packetEncoder, version int16) (err error) {
-	err = pe.putString(c.ConfigName)
-	if err != nil {
-		return err
-	}
-
-	err = pe.putString(c.ConfigValue)
-	if err != nil {
-		return err
-	}
-
-	pe.putInt8(int8(c.Source))
-
-	return nil
-}
-
-func (c *ConfigSynonym) decode(pd packetDecoder, version int16) error {
-	name, err := pd.getString()
-	if err != nil {
-		return nil
-	}
-	c.ConfigName = name
-
-	value, err := pd.getString()
-	if err != nil {
-		return nil
-	}
-	c.ConfigValue = value
-
-	source, err := pd.getInt8()
-	if err != nil {
-		return nil
-	}
-	c.Source = ConfigSource(source)
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/describe_groups_request.go b/vendor/gopkg.in/Shopify/sarama.v1/describe_groups_request.go
deleted file mode 100644
index 1fb3567..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/describe_groups_request.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package sarama
-
-type DescribeGroupsRequest struct {
-	Groups []string
-}
-
-func (r *DescribeGroupsRequest) encode(pe packetEncoder) error {
-	return pe.putStringArray(r.Groups)
-}
-
-func (r *DescribeGroupsRequest) decode(pd packetDecoder, version int16) (err error) {
-	r.Groups, err = pd.getStringArray()
-	return
-}
-
-func (r *DescribeGroupsRequest) key() int16 {
-	return 15
-}
-
-func (r *DescribeGroupsRequest) version() int16 {
-	return 0
-}
-
-func (r *DescribeGroupsRequest) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
-
-func (r *DescribeGroupsRequest) AddGroup(group string) {
-	r.Groups = append(r.Groups, group)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/describe_groups_response.go b/vendor/gopkg.in/Shopify/sarama.v1/describe_groups_response.go
deleted file mode 100644
index 542b3a9..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/describe_groups_response.go
+++ /dev/null
@@ -1,187 +0,0 @@
-package sarama
-
-type DescribeGroupsResponse struct {
-	Groups []*GroupDescription
-}
-
-func (r *DescribeGroupsResponse) encode(pe packetEncoder) error {
-	if err := pe.putArrayLength(len(r.Groups)); err != nil {
-		return err
-	}
-
-	for _, groupDescription := range r.Groups {
-		if err := groupDescription.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *DescribeGroupsResponse) decode(pd packetDecoder, version int16) (err error) {
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Groups = make([]*GroupDescription, n)
-	for i := 0; i < n; i++ {
-		r.Groups[i] = new(GroupDescription)
-		if err := r.Groups[i].decode(pd); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *DescribeGroupsResponse) key() int16 {
-	return 15
-}
-
-func (r *DescribeGroupsResponse) version() int16 {
-	return 0
-}
-
-func (r *DescribeGroupsResponse) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
-
-type GroupDescription struct {
-	Err          KError
-	GroupId      string
-	State        string
-	ProtocolType string
-	Protocol     string
-	Members      map[string]*GroupMemberDescription
-}
-
-func (gd *GroupDescription) encode(pe packetEncoder) error {
-	pe.putInt16(int16(gd.Err))
-
-	if err := pe.putString(gd.GroupId); err != nil {
-		return err
-	}
-	if err := pe.putString(gd.State); err != nil {
-		return err
-	}
-	if err := pe.putString(gd.ProtocolType); err != nil {
-		return err
-	}
-	if err := pe.putString(gd.Protocol); err != nil {
-		return err
-	}
-
-	if err := pe.putArrayLength(len(gd.Members)); err != nil {
-		return err
-	}
-
-	for memberId, groupMemberDescription := range gd.Members {
-		if err := pe.putString(memberId); err != nil {
-			return err
-		}
-		if err := groupMemberDescription.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (gd *GroupDescription) decode(pd packetDecoder) (err error) {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-
-	gd.Err = KError(kerr)
-
-	if gd.GroupId, err = pd.getString(); err != nil {
-		return
-	}
-	if gd.State, err = pd.getString(); err != nil {
-		return
-	}
-	if gd.ProtocolType, err = pd.getString(); err != nil {
-		return
-	}
-	if gd.Protocol, err = pd.getString(); err != nil {
-		return
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if n == 0 {
-		return nil
-	}
-
-	gd.Members = make(map[string]*GroupMemberDescription)
-	for i := 0; i < n; i++ {
-		memberId, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		gd.Members[memberId] = new(GroupMemberDescription)
-		if err := gd.Members[memberId].decode(pd); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-type GroupMemberDescription struct {
-	ClientId         string
-	ClientHost       string
-	MemberMetadata   []byte
-	MemberAssignment []byte
-}
-
-func (gmd *GroupMemberDescription) encode(pe packetEncoder) error {
-	if err := pe.putString(gmd.ClientId); err != nil {
-		return err
-	}
-	if err := pe.putString(gmd.ClientHost); err != nil {
-		return err
-	}
-	if err := pe.putBytes(gmd.MemberMetadata); err != nil {
-		return err
-	}
-	if err := pe.putBytes(gmd.MemberAssignment); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (gmd *GroupMemberDescription) decode(pd packetDecoder) (err error) {
-	if gmd.ClientId, err = pd.getString(); err != nil {
-		return
-	}
-	if gmd.ClientHost, err = pd.getString(); err != nil {
-		return
-	}
-	if gmd.MemberMetadata, err = pd.getBytes(); err != nil {
-		return
-	}
-	if gmd.MemberAssignment, err = pd.getBytes(); err != nil {
-		return
-	}
-
-	return nil
-}
-
-func (gmd *GroupMemberDescription) GetMemberAssignment() (*ConsumerGroupMemberAssignment, error) {
-	assignment := new(ConsumerGroupMemberAssignment)
-	err := decode(gmd.MemberAssignment, assignment)
-	return assignment, err
-}
-
-func (gmd *GroupMemberDescription) GetMemberMetadata() (*ConsumerGroupMemberMetadata, error) {
-	metadata := new(ConsumerGroupMemberMetadata)
-	err := decode(gmd.MemberMetadata, metadata)
-	return metadata, err
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/dev.yml b/vendor/gopkg.in/Shopify/sarama.v1/dev.yml
deleted file mode 100644
index 97eed3a..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/dev.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-name: sarama
-
-up:
-  - go:
-      version: '1.11'
-
-commands:
-  test:
-    run: make test
-    desc: 'run unit tests'
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/encoder_decoder.go b/vendor/gopkg.in/Shopify/sarama.v1/encoder_decoder.go
deleted file mode 100644
index 7ce3bc0..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/encoder_decoder.go
+++ /dev/null
@@ -1,89 +0,0 @@
-package sarama
-
-import (
-	"fmt"
-
-	"github.com/rcrowley/go-metrics"
-)
-
-// Encoder is the interface that wraps the basic Encode method.
-// Anything implementing Encoder can be turned into bytes using Kafka's encoding rules.
-type encoder interface {
-	encode(pe packetEncoder) error
-}
-
-// Encode takes an Encoder and turns it into bytes while potentially recording metrics.
-func encode(e encoder, metricRegistry metrics.Registry) ([]byte, error) {
-	if e == nil {
-		return nil, nil
-	}
-
-	var prepEnc prepEncoder
-	var realEnc realEncoder
-
-	err := e.encode(&prepEnc)
-	if err != nil {
-		return nil, err
-	}
-
-	if prepEnc.length < 0 || prepEnc.length > int(MaxRequestSize) {
-		return nil, PacketEncodingError{fmt.Sprintf("invalid request size (%d)", prepEnc.length)}
-	}
-
-	realEnc.raw = make([]byte, prepEnc.length)
-	realEnc.registry = metricRegistry
-	err = e.encode(&realEnc)
-	if err != nil {
-		return nil, err
-	}
-
-	return realEnc.raw, nil
-}
-
-// Decoder is the interface that wraps the basic Decode method.
-// Anything implementing Decoder can be extracted from bytes using Kafka's encoding rules.
-type decoder interface {
-	decode(pd packetDecoder) error
-}
-
-type versionedDecoder interface {
-	decode(pd packetDecoder, version int16) error
-}
-
-// Decode takes bytes and a Decoder and fills the fields of the decoder from the bytes,
-// interpreted using Kafka's encoding rules.
-func decode(buf []byte, in decoder) error {
-	if buf == nil {
-		return nil
-	}
-
-	helper := realDecoder{raw: buf}
-	err := in.decode(&helper)
-	if err != nil {
-		return err
-	}
-
-	if helper.off != len(buf) {
-		return PacketDecodingError{"invalid length"}
-	}
-
-	return nil
-}
-
-func versionedDecode(buf []byte, in versionedDecoder, version int16) error {
-	if buf == nil {
-		return nil
-	}
-
-	helper := realDecoder{raw: buf}
-	err := in.decode(&helper, version)
-	if err != nil {
-		return err
-	}
-
-	if helper.off != len(buf) {
-		return PacketDecodingError{"invalid length"}
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/end_txn_request.go b/vendor/gopkg.in/Shopify/sarama.v1/end_txn_request.go
deleted file mode 100644
index 2cd9b50..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/end_txn_request.go
+++ /dev/null
@@ -1,50 +0,0 @@
-package sarama
-
-type EndTxnRequest struct {
-	TransactionalID   string
-	ProducerID        int64
-	ProducerEpoch     int16
-	TransactionResult bool
-}
-
-func (a *EndTxnRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(a.TransactionalID); err != nil {
-		return err
-	}
-
-	pe.putInt64(a.ProducerID)
-
-	pe.putInt16(a.ProducerEpoch)
-
-	pe.putBool(a.TransactionResult)
-
-	return nil
-}
-
-func (a *EndTxnRequest) decode(pd packetDecoder, version int16) (err error) {
-	if a.TransactionalID, err = pd.getString(); err != nil {
-		return err
-	}
-	if a.ProducerID, err = pd.getInt64(); err != nil {
-		return err
-	}
-	if a.ProducerEpoch, err = pd.getInt16(); err != nil {
-		return err
-	}
-	if a.TransactionResult, err = pd.getBool(); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (a *EndTxnRequest) key() int16 {
-	return 26
-}
-
-func (a *EndTxnRequest) version() int16 {
-	return 0
-}
-
-func (a *EndTxnRequest) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/end_txn_response.go b/vendor/gopkg.in/Shopify/sarama.v1/end_txn_response.go
deleted file mode 100644
index 33b27e3..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/end_txn_response.go
+++ /dev/null
@@ -1,44 +0,0 @@
-package sarama
-
-import (
-	"time"
-)
-
-type EndTxnResponse struct {
-	ThrottleTime time.Duration
-	Err          KError
-}
-
-func (e *EndTxnResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(e.ThrottleTime / time.Millisecond))
-	pe.putInt16(int16(e.Err))
-	return nil
-}
-
-func (e *EndTxnResponse) decode(pd packetDecoder, version int16) (err error) {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	e.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	e.Err = KError(kerr)
-
-	return nil
-}
-
-func (e *EndTxnResponse) key() int16 {
-	return 25
-}
-
-func (e *EndTxnResponse) version() int16 {
-	return 0
-}
-
-func (e *EndTxnResponse) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/errors.go b/vendor/gopkg.in/Shopify/sarama.v1/errors.go
deleted file mode 100644
index 87a4c61..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/errors.go
+++ /dev/null
@@ -1,329 +0,0 @@
-package sarama
-
-import (
-	"errors"
-	"fmt"
-)
-
-// ErrOutOfBrokers is the error returned when the client has run out of brokers to talk to because all of them errored
-// or otherwise failed to respond.
-var ErrOutOfBrokers = errors.New("kafka: client has run out of available brokers to talk to (Is your cluster reachable?)")
-
-// ErrClosedClient is the error returned when a method is called on a client that has been closed.
-var ErrClosedClient = errors.New("kafka: tried to use a client that was closed")
-
-// ErrIncompleteResponse is the error returned when the server returns a syntactically valid response, but it does
-// not contain the expected information.
-var ErrIncompleteResponse = errors.New("kafka: response did not contain all the expected topic/partition blocks")
-
-// ErrInvalidPartition is the error returned when a partitioner returns an invalid partition index
-// (meaning one outside of the range [0...numPartitions-1]).
-var ErrInvalidPartition = errors.New("kafka: partitioner returned an invalid partition index")
-
-// ErrAlreadyConnected is the error returned when calling Open() on a Broker that is already connected or connecting.
-var ErrAlreadyConnected = errors.New("kafka: broker connection already initiated")
-
-// ErrNotConnected is the error returned when trying to send or call Close() on a Broker that is not connected.
-var ErrNotConnected = errors.New("kafka: broker not connected")
-
-// ErrInsufficientData is returned when decoding and the packet is truncated. This can be expected
-// when requesting messages, since as an optimization the server is allowed to return a partial message at the end
-// of the message set.
-var ErrInsufficientData = errors.New("kafka: insufficient data to decode packet, more bytes expected")
-
-// ErrShuttingDown is returned when a producer receives a message during shutdown.
-var ErrShuttingDown = errors.New("kafka: message received by producer in process of shutting down")
-
-// ErrMessageTooLarge is returned when the next message to consume is larger than the configured Consumer.Fetch.Max
-var ErrMessageTooLarge = errors.New("kafka: message is larger than Consumer.Fetch.Max")
-
-// ErrConsumerOffsetNotAdvanced is returned when a partition consumer didn't advance its offset after parsing
-// a RecordBatch.
-var ErrConsumerOffsetNotAdvanced = errors.New("kafka: consumer offset was not advanced after a RecordBatch")
-
-// ErrControllerNotAvailable is returned when server didn't give correct controller id. May be kafka server's version
-// is lower than 0.10.0.0.
-var ErrControllerNotAvailable = errors.New("kafka: controller is not available")
-
-// ErrNoTopicsToUpdateMetadata is returned when Meta.Full is set to false but no specific topics were found to update
-// the metadata.
-var ErrNoTopicsToUpdateMetadata = errors.New("kafka: no specific topics to update metadata")
-
-// PacketEncodingError is returned from a failure while encoding a Kafka packet. This can happen, for example,
-// if you try to encode a string over 2^15 characters in length, since Kafka's encoding rules do not permit that.
-type PacketEncodingError struct {
-	Info string
-}
-
-func (err PacketEncodingError) Error() string {
-	return fmt.Sprintf("kafka: error encoding packet: %s", err.Info)
-}
-
-// PacketDecodingError is returned when there was an error (other than truncated data) decoding the Kafka broker's response.
-// This can be a bad CRC or length field, or any other invalid value.
-type PacketDecodingError struct {
-	Info string
-}
-
-func (err PacketDecodingError) Error() string {
-	return fmt.Sprintf("kafka: error decoding packet: %s", err.Info)
-}
-
-// ConfigurationError is the type of error returned from a constructor (e.g. NewClient, or NewConsumer)
-// when the specified configuration is invalid.
-type ConfigurationError string
-
-func (err ConfigurationError) Error() string {
-	return "kafka: invalid configuration (" + string(err) + ")"
-}
-
-// KError is the type of error that can be returned directly by the Kafka broker.
-// See https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol#AGuideToTheKafkaProtocol-ErrorCodes
-type KError int16
-
-// Numeric error codes returned by the Kafka server.
-const (
-	ErrNoError                            KError = 0
-	ErrUnknown                            KError = -1
-	ErrOffsetOutOfRange                   KError = 1
-	ErrInvalidMessage                     KError = 2
-	ErrUnknownTopicOrPartition            KError = 3
-	ErrInvalidMessageSize                 KError = 4
-	ErrLeaderNotAvailable                 KError = 5
-	ErrNotLeaderForPartition              KError = 6
-	ErrRequestTimedOut                    KError = 7
-	ErrBrokerNotAvailable                 KError = 8
-	ErrReplicaNotAvailable                KError = 9
-	ErrMessageSizeTooLarge                KError = 10
-	ErrStaleControllerEpochCode           KError = 11
-	ErrOffsetMetadataTooLarge             KError = 12
-	ErrNetworkException                   KError = 13
-	ErrOffsetsLoadInProgress              KError = 14
-	ErrConsumerCoordinatorNotAvailable    KError = 15
-	ErrNotCoordinatorForConsumer          KError = 16
-	ErrInvalidTopic                       KError = 17
-	ErrMessageSetSizeTooLarge             KError = 18
-	ErrNotEnoughReplicas                  KError = 19
-	ErrNotEnoughReplicasAfterAppend       KError = 20
-	ErrInvalidRequiredAcks                KError = 21
-	ErrIllegalGeneration                  KError = 22
-	ErrInconsistentGroupProtocol          KError = 23
-	ErrInvalidGroupId                     KError = 24
-	ErrUnknownMemberId                    KError = 25
-	ErrInvalidSessionTimeout              KError = 26
-	ErrRebalanceInProgress                KError = 27
-	ErrInvalidCommitOffsetSize            KError = 28
-	ErrTopicAuthorizationFailed           KError = 29
-	ErrGroupAuthorizationFailed           KError = 30
-	ErrClusterAuthorizationFailed         KError = 31
-	ErrInvalidTimestamp                   KError = 32
-	ErrUnsupportedSASLMechanism           KError = 33
-	ErrIllegalSASLState                   KError = 34
-	ErrUnsupportedVersion                 KError = 35
-	ErrTopicAlreadyExists                 KError = 36
-	ErrInvalidPartitions                  KError = 37
-	ErrInvalidReplicationFactor           KError = 38
-	ErrInvalidReplicaAssignment           KError = 39
-	ErrInvalidConfig                      KError = 40
-	ErrNotController                      KError = 41
-	ErrInvalidRequest                     KError = 42
-	ErrUnsupportedForMessageFormat        KError = 43
-	ErrPolicyViolation                    KError = 44
-	ErrOutOfOrderSequenceNumber           KError = 45
-	ErrDuplicateSequenceNumber            KError = 46
-	ErrInvalidProducerEpoch               KError = 47
-	ErrInvalidTxnState                    KError = 48
-	ErrInvalidProducerIDMapping           KError = 49
-	ErrInvalidTransactionTimeout          KError = 50
-	ErrConcurrentTransactions             KError = 51
-	ErrTransactionCoordinatorFenced       KError = 52
-	ErrTransactionalIDAuthorizationFailed KError = 53
-	ErrSecurityDisabled                   KError = 54
-	ErrOperationNotAttempted              KError = 55
-	ErrKafkaStorageError                  KError = 56
-	ErrLogDirNotFound                     KError = 57
-	ErrSASLAuthenticationFailed           KError = 58
-	ErrUnknownProducerID                  KError = 59
-	ErrReassignmentInProgress             KError = 60
-	ErrDelegationTokenAuthDisabled        KError = 61
-	ErrDelegationTokenNotFound            KError = 62
-	ErrDelegationTokenOwnerMismatch       KError = 63
-	ErrDelegationTokenRequestNotAllowed   KError = 64
-	ErrDelegationTokenAuthorizationFailed KError = 65
-	ErrDelegationTokenExpired             KError = 66
-	ErrInvalidPrincipalType               KError = 67
-	ErrNonEmptyGroup                      KError = 68
-	ErrGroupIDNotFound                    KError = 69
-	ErrFetchSessionIDNotFound             KError = 70
-	ErrInvalidFetchSessionEpoch           KError = 71
-	ErrListenerNotFound                   KError = 72
-	ErrTopicDeletionDisabled              KError = 73
-	ErrFencedLeaderEpoch                  KError = 74
-	ErrUnknownLeaderEpoch                 KError = 75
-	ErrUnsupportedCompressionType         KError = 76
-)
-
-func (err KError) Error() string {
-	// Error messages stolen/adapted from
-	// https://kafka.apache.org/protocol#protocol_error_codes
-	switch err {
-	case ErrNoError:
-		return "kafka server: Not an error, why are you printing me?"
-	case ErrUnknown:
-		return "kafka server: Unexpected (unknown?) server error."
-	case ErrOffsetOutOfRange:
-		return "kafka server: The requested offset is outside the range of offsets maintained by the server for the given topic/partition."
-	case ErrInvalidMessage:
-		return "kafka server: Message contents does not match its CRC."
-	case ErrUnknownTopicOrPartition:
-		return "kafka server: Request was for a topic or partition that does not exist on this broker."
-	case ErrInvalidMessageSize:
-		return "kafka server: The message has a negative size."
-	case ErrLeaderNotAvailable:
-		return "kafka server: In the middle of a leadership election, there is currently no leader for this partition and hence it is unavailable for writes."
-	case ErrNotLeaderForPartition:
-		return "kafka server: Tried to send a message to a replica that is not the leader for some partition. Your metadata is out of date."
-	case ErrRequestTimedOut:
-		return "kafka server: Request exceeded the user-specified time limit in the request."
-	case ErrBrokerNotAvailable:
-		return "kafka server: Broker not available. Not a client facing error, we should never receive this!!!"
-	case ErrReplicaNotAvailable:
-		return "kafka server: Replica information not available, one or more brokers are down."
-	case ErrMessageSizeTooLarge:
-		return "kafka server: Message was too large, server rejected it to avoid allocation error."
-	case ErrStaleControllerEpochCode:
-		return "kafka server: StaleControllerEpochCode (internal error code for broker-to-broker communication)."
-	case ErrOffsetMetadataTooLarge:
-		return "kafka server: Specified a string larger than the configured maximum for offset metadata."
-	case ErrNetworkException:
-		return "kafka server: The server disconnected before a response was received."
-	case ErrOffsetsLoadInProgress:
-		return "kafka server: The broker is still loading offsets after a leader change for that offset's topic partition."
-	case ErrConsumerCoordinatorNotAvailable:
-		return "kafka server: Offset's topic has not yet been created."
-	case ErrNotCoordinatorForConsumer:
-		return "kafka server: Request was for a consumer group that is not coordinated by this broker."
-	case ErrInvalidTopic:
-		return "kafka server: The request attempted to perform an operation on an invalid topic."
-	case ErrMessageSetSizeTooLarge:
-		return "kafka server: The request included message batch larger than the configured segment size on the server."
-	case ErrNotEnoughReplicas:
-		return "kafka server: Messages are rejected since there are fewer in-sync replicas than required."
-	case ErrNotEnoughReplicasAfterAppend:
-		return "kafka server: Messages are written to the log, but to fewer in-sync replicas than required."
-	case ErrInvalidRequiredAcks:
-		return "kafka server: The number of required acks is invalid (should be either -1, 0, or 1)."
-	case ErrIllegalGeneration:
-		return "kafka server: The provided generation id is not the current generation."
-	case ErrInconsistentGroupProtocol:
-		return "kafka server: The provider group protocol type is incompatible with the other members."
-	case ErrInvalidGroupId:
-		return "kafka server: The provided group id was empty."
-	case ErrUnknownMemberId:
-		return "kafka server: The provided member is not known in the current generation."
-	case ErrInvalidSessionTimeout:
-		return "kafka server: The provided session timeout is outside the allowed range."
-	case ErrRebalanceInProgress:
-		return "kafka server: A rebalance for the group is in progress. Please re-join the group."
-	case ErrInvalidCommitOffsetSize:
-		return "kafka server: The provided commit metadata was too large."
-	case ErrTopicAuthorizationFailed:
-		return "kafka server: The client is not authorized to access this topic."
-	case ErrGroupAuthorizationFailed:
-		return "kafka server: The client is not authorized to access this group."
-	case ErrClusterAuthorizationFailed:
-		return "kafka server: The client is not authorized to send this request type."
-	case ErrInvalidTimestamp:
-		return "kafka server: The timestamp of the message is out of acceptable range."
-	case ErrUnsupportedSASLMechanism:
-		return "kafka server: The broker does not support the requested SASL mechanism."
-	case ErrIllegalSASLState:
-		return "kafka server: Request is not valid given the current SASL state."
-	case ErrUnsupportedVersion:
-		return "kafka server: The version of API is not supported."
-	case ErrTopicAlreadyExists:
-		return "kafka server: Topic with this name already exists."
-	case ErrInvalidPartitions:
-		return "kafka server: Number of partitions is invalid."
-	case ErrInvalidReplicationFactor:
-		return "kafka server: Replication-factor is invalid."
-	case ErrInvalidReplicaAssignment:
-		return "kafka server: Replica assignment is invalid."
-	case ErrInvalidConfig:
-		return "kafka server: Configuration is invalid."
-	case ErrNotController:
-		return "kafka server: This is not the correct controller for this cluster."
-	case ErrInvalidRequest:
-		return "kafka server: This most likely occurs because of a request being malformed by the client library or the message was sent to an incompatible broker. See the broker logs for more details."
-	case ErrUnsupportedForMessageFormat:
-		return "kafka server: The requested operation is not supported by the message format version."
-	case ErrPolicyViolation:
-		return "kafka server: Request parameters do not satisfy the configured policy."
-	case ErrOutOfOrderSequenceNumber:
-		return "kafka server: The broker received an out of order sequence number."
-	case ErrDuplicateSequenceNumber:
-		return "kafka server: The broker received a duplicate sequence number."
-	case ErrInvalidProducerEpoch:
-		return "kafka server: Producer attempted an operation with an old epoch."
-	case ErrInvalidTxnState:
-		return "kafka server: The producer attempted a transactional operation in an invalid state."
-	case ErrInvalidProducerIDMapping:
-		return "kafka server: The producer attempted to use a producer id which is not currently assigned to its transactional id."
-	case ErrInvalidTransactionTimeout:
-		return "kafka server: The transaction timeout is larger than the maximum value allowed by the broker (as configured by max.transaction.timeout.ms)."
-	case ErrConcurrentTransactions:
-		return "kafka server: The producer attempted to update a transaction while another concurrent operation on the same transaction was ongoing."
-	case ErrTransactionCoordinatorFenced:
-		return "kafka server: The transaction coordinator sending a WriteTxnMarker is no longer the current coordinator for a given producer."
-	case ErrTransactionalIDAuthorizationFailed:
-		return "kafka server: Transactional ID authorization failed."
-	case ErrSecurityDisabled:
-		return "kafka server: Security features are disabled."
-	case ErrOperationNotAttempted:
-		return "kafka server: The broker did not attempt to execute this operation."
-	case ErrKafkaStorageError:
-		return "kafka server: Disk error when trying to access log file on the disk."
-	case ErrLogDirNotFound:
-		return "kafka server: The specified log directory is not found in the broker config."
-	case ErrSASLAuthenticationFailed:
-		return "kafka server: SASL Authentication failed."
-	case ErrUnknownProducerID:
-		return "kafka server: The broker could not locate the producer metadata associated with the Producer ID."
-	case ErrReassignmentInProgress:
-		return "kafka server: A partition reassignment is in progress."
-	case ErrDelegationTokenAuthDisabled:
-		return "kafka server: Delegation Token feature is not enabled."
-	case ErrDelegationTokenNotFound:
-		return "kafka server: Delegation Token is not found on server."
-	case ErrDelegationTokenOwnerMismatch:
-		return "kafka server: Specified Principal is not valid Owner/Renewer."
-	case ErrDelegationTokenRequestNotAllowed:
-		return "kafka server: Delegation Token requests are not allowed on PLAINTEXT/1-way SSL channels and on delegation token authenticated channels."
-	case ErrDelegationTokenAuthorizationFailed:
-		return "kafka server: Delegation Token authorization failed."
-	case ErrDelegationTokenExpired:
-		return "kafka server: Delegation Token is expired."
-	case ErrInvalidPrincipalType:
-		return "kafka server: Supplied principalType is not supported."
-	case ErrNonEmptyGroup:
-		return "kafka server: The group is not empty."
-	case ErrGroupIDNotFound:
-		return "kafka server: The group id does not exist."
-	case ErrFetchSessionIDNotFound:
-		return "kafka server: The fetch session ID was not found."
-	case ErrInvalidFetchSessionEpoch:
-		return "kafka server: The fetch session epoch is invalid."
-	case ErrListenerNotFound:
-		return "kafka server: There is no listener on the leader broker that matches the listener on which metadata request was processed."
-	case ErrTopicDeletionDisabled:
-		return "kafka server: Topic deletion is disabled."
-	case ErrFencedLeaderEpoch:
-		return "kafka server: The leader epoch in the request is older than the epoch on the broker."
-	case ErrUnknownLeaderEpoch:
-		return "kafka server: The leader epoch in the request is newer than the epoch on the broker."
-	case ErrUnsupportedCompressionType:
-		return "kafka server: The requesting client does not support the compression type of given partition."
-	}
-
-	return fmt.Sprintf("Unknown error, how did this happen? Error code = %d", err)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/fetch_request.go b/vendor/gopkg.in/Shopify/sarama.v1/fetch_request.go
deleted file mode 100644
index 462ab8a..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/fetch_request.go
+++ /dev/null
@@ -1,170 +0,0 @@
-package sarama
-
-type fetchRequestBlock struct {
-	fetchOffset int64
-	maxBytes    int32
-}
-
-func (b *fetchRequestBlock) encode(pe packetEncoder) error {
-	pe.putInt64(b.fetchOffset)
-	pe.putInt32(b.maxBytes)
-	return nil
-}
-
-func (b *fetchRequestBlock) decode(pd packetDecoder) (err error) {
-	if b.fetchOffset, err = pd.getInt64(); err != nil {
-		return err
-	}
-	if b.maxBytes, err = pd.getInt32(); err != nil {
-		return err
-	}
-	return nil
-}
-
-// FetchRequest (API key 1) will fetch Kafka messages. Version 3 introduced the MaxBytes field. See
-// https://issues.apache.org/jira/browse/KAFKA-2063 for a discussion of the issues leading up to that.  The KIP is at
-// https://cwiki.apache.org/confluence/display/KAFKA/KIP-74%3A+Add+Fetch+Response+Size+Limit+in+Bytes
-type FetchRequest struct {
-	MaxWaitTime int32
-	MinBytes    int32
-	MaxBytes    int32
-	Version     int16
-	Isolation   IsolationLevel
-	blocks      map[string]map[int32]*fetchRequestBlock
-}
-
-type IsolationLevel int8
-
-const (
-	ReadUncommitted IsolationLevel = 0
-	ReadCommitted   IsolationLevel = 1
-)
-
-func (r *FetchRequest) encode(pe packetEncoder) (err error) {
-	pe.putInt32(-1) // replica ID is always -1 for clients
-	pe.putInt32(r.MaxWaitTime)
-	pe.putInt32(r.MinBytes)
-	if r.Version >= 3 {
-		pe.putInt32(r.MaxBytes)
-	}
-	if r.Version >= 4 {
-		pe.putInt8(int8(r.Isolation))
-	}
-	err = pe.putArrayLength(len(r.blocks))
-	if err != nil {
-		return err
-	}
-	for topic, blocks := range r.blocks {
-		err = pe.putString(topic)
-		if err != nil {
-			return err
-		}
-		err = pe.putArrayLength(len(blocks))
-		if err != nil {
-			return err
-		}
-		for partition, block := range blocks {
-			pe.putInt32(partition)
-			err = block.encode(pe)
-			if err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func (r *FetchRequest) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-	if _, err = pd.getInt32(); err != nil {
-		return err
-	}
-	if r.MaxWaitTime, err = pd.getInt32(); err != nil {
-		return err
-	}
-	if r.MinBytes, err = pd.getInt32(); err != nil {
-		return err
-	}
-	if r.Version >= 3 {
-		if r.MaxBytes, err = pd.getInt32(); err != nil {
-			return err
-		}
-	}
-	if r.Version >= 4 {
-		isolation, err := pd.getInt8()
-		if err != nil {
-			return err
-		}
-		r.Isolation = IsolationLevel(isolation)
-	}
-	topicCount, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if topicCount == 0 {
-		return nil
-	}
-	r.blocks = make(map[string]map[int32]*fetchRequestBlock)
-	for i := 0; i < topicCount; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		partitionCount, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-		r.blocks[topic] = make(map[int32]*fetchRequestBlock)
-		for j := 0; j < partitionCount; j++ {
-			partition, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-			fetchBlock := &fetchRequestBlock{}
-			if err = fetchBlock.decode(pd); err != nil {
-				return err
-			}
-			r.blocks[topic][partition] = fetchBlock
-		}
-	}
-	return nil
-}
-
-func (r *FetchRequest) key() int16 {
-	return 1
-}
-
-func (r *FetchRequest) version() int16 {
-	return r.Version
-}
-
-func (r *FetchRequest) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_9_0_0
-	case 2:
-		return V0_10_0_0
-	case 3:
-		return V0_10_1_0
-	case 4:
-		return V0_11_0_0
-	default:
-		return MinVersion
-	}
-}
-
-func (r *FetchRequest) AddBlock(topic string, partitionID int32, fetchOffset int64, maxBytes int32) {
-	if r.blocks == nil {
-		r.blocks = make(map[string]map[int32]*fetchRequestBlock)
-	}
-
-	if r.blocks[topic] == nil {
-		r.blocks[topic] = make(map[int32]*fetchRequestBlock)
-	}
-
-	tmp := new(fetchRequestBlock)
-	tmp.maxBytes = maxBytes
-	tmp.fetchOffset = fetchOffset
-
-	r.blocks[topic][partitionID] = tmp
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/fetch_response.go b/vendor/gopkg.in/Shopify/sarama.v1/fetch_response.go
deleted file mode 100644
index 9df99c1..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/fetch_response.go
+++ /dev/null
@@ -1,409 +0,0 @@
-package sarama
-
-import (
-	"time"
-)
-
-type AbortedTransaction struct {
-	ProducerID  int64
-	FirstOffset int64
-}
-
-func (t *AbortedTransaction) decode(pd packetDecoder) (err error) {
-	if t.ProducerID, err = pd.getInt64(); err != nil {
-		return err
-	}
-
-	if t.FirstOffset, err = pd.getInt64(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (t *AbortedTransaction) encode(pe packetEncoder) (err error) {
-	pe.putInt64(t.ProducerID)
-	pe.putInt64(t.FirstOffset)
-
-	return nil
-}
-
-type FetchResponseBlock struct {
-	Err                 KError
-	HighWaterMarkOffset int64
-	LastStableOffset    int64
-	AbortedTransactions []*AbortedTransaction
-	Records             *Records // deprecated: use FetchResponseBlock.RecordsSet
-	RecordsSet          []*Records
-	Partial             bool
-}
-
-func (b *FetchResponseBlock) decode(pd packetDecoder, version int16) (err error) {
-	tmp, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	b.Err = KError(tmp)
-
-	b.HighWaterMarkOffset, err = pd.getInt64()
-	if err != nil {
-		return err
-	}
-
-	if version >= 4 {
-		b.LastStableOffset, err = pd.getInt64()
-		if err != nil {
-			return err
-		}
-
-		numTransact, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-
-		if numTransact >= 0 {
-			b.AbortedTransactions = make([]*AbortedTransaction, numTransact)
-		}
-
-		for i := 0; i < numTransact; i++ {
-			transact := new(AbortedTransaction)
-			if err = transact.decode(pd); err != nil {
-				return err
-			}
-			b.AbortedTransactions[i] = transact
-		}
-	}
-
-	recordsSize, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-
-	recordsDecoder, err := pd.getSubset(int(recordsSize))
-	if err != nil {
-		return err
-	}
-
-	b.RecordsSet = []*Records{}
-
-	for recordsDecoder.remaining() > 0 {
-		records := &Records{}
-		if err := records.decode(recordsDecoder); err != nil {
-			// If we have at least one decoded records, this is not an error
-			if err == ErrInsufficientData {
-				if len(b.RecordsSet) == 0 {
-					b.Partial = true
-				}
-				break
-			}
-			return err
-		}
-
-		partial, err := records.isPartial()
-		if err != nil {
-			return err
-		}
-
-		n, err := records.numRecords()
-		if err != nil {
-			return err
-		}
-
-		if n > 0 || (partial && len(b.RecordsSet) == 0) {
-			b.RecordsSet = append(b.RecordsSet, records)
-
-			if b.Records == nil {
-				b.Records = records
-			}
-		}
-
-		overflow, err := records.isOverflow()
-		if err != nil {
-			return err
-		}
-
-		if partial || overflow {
-			break
-		}
-	}
-
-	return nil
-}
-
-func (b *FetchResponseBlock) numRecords() (int, error) {
-	sum := 0
-
-	for _, records := range b.RecordsSet {
-		count, err := records.numRecords()
-		if err != nil {
-			return 0, err
-		}
-
-		sum += count
-	}
-
-	return sum, nil
-}
-
-func (b *FetchResponseBlock) isPartial() (bool, error) {
-	if b.Partial {
-		return true, nil
-	}
-
-	if len(b.RecordsSet) == 1 {
-		return b.RecordsSet[0].isPartial()
-	}
-
-	return false, nil
-}
-
-func (b *FetchResponseBlock) encode(pe packetEncoder, version int16) (err error) {
-	pe.putInt16(int16(b.Err))
-
-	pe.putInt64(b.HighWaterMarkOffset)
-
-	if version >= 4 {
-		pe.putInt64(b.LastStableOffset)
-
-		if err = pe.putArrayLength(len(b.AbortedTransactions)); err != nil {
-			return err
-		}
-		for _, transact := range b.AbortedTransactions {
-			if err = transact.encode(pe); err != nil {
-				return err
-			}
-		}
-	}
-
-	pe.push(&lengthField{})
-	for _, records := range b.RecordsSet {
-		err = records.encode(pe)
-		if err != nil {
-			return err
-		}
-	}
-	return pe.pop()
-}
-
-type FetchResponse struct {
-	Blocks        map[string]map[int32]*FetchResponseBlock
-	ThrottleTime  time.Duration
-	Version       int16 // v1 requires 0.9+, v2 requires 0.10+
-	LogAppendTime bool
-	Timestamp     time.Time
-}
-
-func (r *FetchResponse) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-
-	if r.Version >= 1 {
-		throttle, err := pd.getInt32()
-		if err != nil {
-			return err
-		}
-		r.ThrottleTime = time.Duration(throttle) * time.Millisecond
-	}
-
-	numTopics, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Blocks = make(map[string]map[int32]*FetchResponseBlock, numTopics)
-	for i := 0; i < numTopics; i++ {
-		name, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		numBlocks, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-
-		r.Blocks[name] = make(map[int32]*FetchResponseBlock, numBlocks)
-
-		for j := 0; j < numBlocks; j++ {
-			id, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-
-			block := new(FetchResponseBlock)
-			err = block.decode(pd, version)
-			if err != nil {
-				return err
-			}
-			r.Blocks[name][id] = block
-		}
-	}
-
-	return nil
-}
-
-func (r *FetchResponse) encode(pe packetEncoder) (err error) {
-	if r.Version >= 1 {
-		pe.putInt32(int32(r.ThrottleTime / time.Millisecond))
-	}
-
-	err = pe.putArrayLength(len(r.Blocks))
-	if err != nil {
-		return err
-	}
-
-	for topic, partitions := range r.Blocks {
-		err = pe.putString(topic)
-		if err != nil {
-			return err
-		}
-
-		err = pe.putArrayLength(len(partitions))
-		if err != nil {
-			return err
-		}
-
-		for id, block := range partitions {
-			pe.putInt32(id)
-			err = block.encode(pe, r.Version)
-			if err != nil {
-				return err
-			}
-		}
-
-	}
-	return nil
-}
-
-func (r *FetchResponse) key() int16 {
-	return 1
-}
-
-func (r *FetchResponse) version() int16 {
-	return r.Version
-}
-
-func (r *FetchResponse) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_9_0_0
-	case 2:
-		return V0_10_0_0
-	case 3:
-		return V0_10_1_0
-	case 4:
-		return V0_11_0_0
-	default:
-		return MinVersion
-	}
-}
-
-func (r *FetchResponse) GetBlock(topic string, partition int32) *FetchResponseBlock {
-	if r.Blocks == nil {
-		return nil
-	}
-
-	if r.Blocks[topic] == nil {
-		return nil
-	}
-
-	return r.Blocks[topic][partition]
-}
-
-func (r *FetchResponse) AddError(topic string, partition int32, err KError) {
-	if r.Blocks == nil {
-		r.Blocks = make(map[string]map[int32]*FetchResponseBlock)
-	}
-	partitions, ok := r.Blocks[topic]
-	if !ok {
-		partitions = make(map[int32]*FetchResponseBlock)
-		r.Blocks[topic] = partitions
-	}
-	frb, ok := partitions[partition]
-	if !ok {
-		frb = new(FetchResponseBlock)
-		partitions[partition] = frb
-	}
-	frb.Err = err
-}
-
-func (r *FetchResponse) getOrCreateBlock(topic string, partition int32) *FetchResponseBlock {
-	if r.Blocks == nil {
-		r.Blocks = make(map[string]map[int32]*FetchResponseBlock)
-	}
-	partitions, ok := r.Blocks[topic]
-	if !ok {
-		partitions = make(map[int32]*FetchResponseBlock)
-		r.Blocks[topic] = partitions
-	}
-	frb, ok := partitions[partition]
-	if !ok {
-		frb = new(FetchResponseBlock)
-		partitions[partition] = frb
-	}
-
-	return frb
-}
-
-func encodeKV(key, value Encoder) ([]byte, []byte) {
-	var kb []byte
-	var vb []byte
-	if key != nil {
-		kb, _ = key.Encode()
-	}
-	if value != nil {
-		vb, _ = value.Encode()
-	}
-
-	return kb, vb
-}
-
-func (r *FetchResponse) AddMessageWithTimestamp(topic string, partition int32, key, value Encoder, offset int64, timestamp time.Time, version int8) {
-	frb := r.getOrCreateBlock(topic, partition)
-	kb, vb := encodeKV(key, value)
-	if r.LogAppendTime {
-		timestamp = r.Timestamp
-	}
-	msg := &Message{Key: kb, Value: vb, LogAppendTime: r.LogAppendTime, Timestamp: timestamp, Version: version}
-	msgBlock := &MessageBlock{Msg: msg, Offset: offset}
-	if len(frb.RecordsSet) == 0 {
-		records := newLegacyRecords(&MessageSet{})
-		frb.RecordsSet = []*Records{&records}
-	}
-	set := frb.RecordsSet[0].MsgSet
-	set.Messages = append(set.Messages, msgBlock)
-}
-
-func (r *FetchResponse) AddRecordWithTimestamp(topic string, partition int32, key, value Encoder, offset int64, timestamp time.Time) {
-	frb := r.getOrCreateBlock(topic, partition)
-	kb, vb := encodeKV(key, value)
-	if len(frb.RecordsSet) == 0 {
-		records := newDefaultRecords(&RecordBatch{Version: 2, LogAppendTime: r.LogAppendTime, FirstTimestamp: timestamp, MaxTimestamp: r.Timestamp})
-		frb.RecordsSet = []*Records{&records}
-	}
-	batch := frb.RecordsSet[0].RecordBatch
-	rec := &Record{Key: kb, Value: vb, OffsetDelta: offset, TimestampDelta: timestamp.Sub(batch.FirstTimestamp)}
-	batch.addRecord(rec)
-}
-
-func (r *FetchResponse) AddMessage(topic string, partition int32, key, value Encoder, offset int64) {
-	r.AddMessageWithTimestamp(topic, partition, key, value, offset, time.Time{}, 0)
-}
-
-func (r *FetchResponse) AddRecord(topic string, partition int32, key, value Encoder, offset int64) {
-	r.AddRecordWithTimestamp(topic, partition, key, value, offset, time.Time{})
-}
-
-func (r *FetchResponse) SetLastOffsetDelta(topic string, partition int32, offset int32) {
-	frb := r.getOrCreateBlock(topic, partition)
-	if len(frb.RecordsSet) == 0 {
-		records := newDefaultRecords(&RecordBatch{Version: 2})
-		frb.RecordsSet = []*Records{&records}
-	}
-	batch := frb.RecordsSet[0].RecordBatch
-	batch.LastOffsetDelta = offset
-}
-
-func (r *FetchResponse) SetLastStableOffset(topic string, partition int32, offset int64) {
-	frb := r.getOrCreateBlock(topic, partition)
-	frb.LastStableOffset = offset
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/find_coordinator_request.go b/vendor/gopkg.in/Shopify/sarama.v1/find_coordinator_request.go
deleted file mode 100644
index 0ab5cb5..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/find_coordinator_request.go
+++ /dev/null
@@ -1,61 +0,0 @@
-package sarama
-
-type CoordinatorType int8
-
-const (
-	CoordinatorGroup       CoordinatorType = 0
-	CoordinatorTransaction CoordinatorType = 1
-)
-
-type FindCoordinatorRequest struct {
-	Version         int16
-	CoordinatorKey  string
-	CoordinatorType CoordinatorType
-}
-
-func (f *FindCoordinatorRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(f.CoordinatorKey); err != nil {
-		return err
-	}
-
-	if f.Version >= 1 {
-		pe.putInt8(int8(f.CoordinatorType))
-	}
-
-	return nil
-}
-
-func (f *FindCoordinatorRequest) decode(pd packetDecoder, version int16) (err error) {
-	if f.CoordinatorKey, err = pd.getString(); err != nil {
-		return err
-	}
-
-	if version >= 1 {
-		f.Version = version
-		coordinatorType, err := pd.getInt8()
-		if err != nil {
-			return err
-		}
-
-		f.CoordinatorType = CoordinatorType(coordinatorType)
-	}
-
-	return nil
-}
-
-func (f *FindCoordinatorRequest) key() int16 {
-	return 10
-}
-
-func (f *FindCoordinatorRequest) version() int16 {
-	return f.Version
-}
-
-func (f *FindCoordinatorRequest) requiredVersion() KafkaVersion {
-	switch f.Version {
-	case 1:
-		return V0_11_0_0
-	default:
-		return V0_8_2_0
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/find_coordinator_response.go b/vendor/gopkg.in/Shopify/sarama.v1/find_coordinator_response.go
deleted file mode 100644
index 9c900e8..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/find_coordinator_response.go
+++ /dev/null
@@ -1,92 +0,0 @@
-package sarama
-
-import (
-	"time"
-)
-
-var NoNode = &Broker{id: -1, addr: ":-1"}
-
-type FindCoordinatorResponse struct {
-	Version      int16
-	ThrottleTime time.Duration
-	Err          KError
-	ErrMsg       *string
-	Coordinator  *Broker
-}
-
-func (f *FindCoordinatorResponse) decode(pd packetDecoder, version int16) (err error) {
-	if version >= 1 {
-		f.Version = version
-
-		throttleTime, err := pd.getInt32()
-		if err != nil {
-			return err
-		}
-		f.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-	}
-
-	tmp, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	f.Err = KError(tmp)
-
-	if version >= 1 {
-		if f.ErrMsg, err = pd.getNullableString(); err != nil {
-			return err
-		}
-	}
-
-	coordinator := new(Broker)
-	// The version is hardcoded to 0, as version 1 of the Broker-decode
-	// contains the rack-field which is not present in the FindCoordinatorResponse.
-	if err := coordinator.decode(pd, 0); err != nil {
-		return err
-	}
-	if coordinator.addr == ":0" {
-		return nil
-	}
-	f.Coordinator = coordinator
-
-	return nil
-}
-
-func (f *FindCoordinatorResponse) encode(pe packetEncoder) error {
-	if f.Version >= 1 {
-		pe.putInt32(int32(f.ThrottleTime / time.Millisecond))
-	}
-
-	pe.putInt16(int16(f.Err))
-
-	if f.Version >= 1 {
-		if err := pe.putNullableString(f.ErrMsg); err != nil {
-			return err
-		}
-	}
-
-	coordinator := f.Coordinator
-	if coordinator == nil {
-		coordinator = NoNode
-	}
-	if err := coordinator.encode(pe, 0); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (f *FindCoordinatorResponse) key() int16 {
-	return 10
-}
-
-func (f *FindCoordinatorResponse) version() int16 {
-	return f.Version
-}
-
-func (f *FindCoordinatorResponse) requiredVersion() KafkaVersion {
-	switch f.Version {
-	case 1:
-		return V0_11_0_0
-	default:
-		return V0_8_2_0
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/go.mod b/vendor/gopkg.in/Shopify/sarama.v1/go.mod
deleted file mode 100644
index 3715129..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/go.mod
+++ /dev/null
@@ -1,13 +0,0 @@
-module github.com/Shopify/sarama
-
-require (
-	github.com/DataDog/zstd v1.3.5
-	github.com/Shopify/toxiproxy v2.1.4+incompatible
-	github.com/davecgh/go-spew v1.1.1
-	github.com/eapache/go-resiliency v1.1.0
-	github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21
-	github.com/eapache/queue v1.1.0
-	github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db // indirect
-	github.com/pierrec/lz4 v2.0.5+incompatible
-	github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a
-)
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/go.sum b/vendor/gopkg.in/Shopify/sarama.v1/go.sum
deleted file mode 100644
index 58e2e91..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/go.sum
+++ /dev/null
@@ -1,18 +0,0 @@
-github.com/DataDog/zstd v1.3.5 h1:DtpNbljikUepEPD16hD4LvIcmhnhdLTiW/5pHgbmp14=
-github.com/DataDog/zstd v1.3.5/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
-github.com/Shopify/toxiproxy v2.1.4+incompatible h1:TKdv8HiTLgE5wdJuEML90aBgNWsokNbMijUGhmcoBJc=
-github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/eapache/go-resiliency v1.1.0 h1:1NtRmCAqadE2FN4ZcN6g90TP3uk8cg9rn9eNK2197aU=
-github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
-github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21 h1:YEetp8/yCZMuEPMUDHG0CW/brkkEp8mzqk2+ODEitlw=
-github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1:+020luEh2TKB4/GOp8oxxtq0Daoen/Cii55CzbTV6DU=
-github.com/eapache/queue v1.1.0 h1:YOEu7KNc61ntiQlcEeUIoDTJ2o8mQznoNvUhiigpIqc=
-github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
-github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db h1:woRePGFeVFfLKN/pOkfl+p/TAqKOfFu+7KPlMVpok/w=
-github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
-github.com/pierrec/lz4 v2.0.5+incompatible h1:2xWsjqPFWcplujydGg4WmhC/6fZqK42wMM8aXeqhl0I=
-github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
-github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a h1:9ZKAASQSHhDYGoxY8uLVpewe1GDZ2vu2Tr/vTdVAkFQ=
-github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/heartbeat_request.go b/vendor/gopkg.in/Shopify/sarama.v1/heartbeat_request.go
deleted file mode 100644
index ce49c47..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/heartbeat_request.go
+++ /dev/null
@@ -1,47 +0,0 @@
-package sarama
-
-type HeartbeatRequest struct {
-	GroupId      string
-	GenerationId int32
-	MemberId     string
-}
-
-func (r *HeartbeatRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(r.GroupId); err != nil {
-		return err
-	}
-
-	pe.putInt32(r.GenerationId)
-
-	if err := pe.putString(r.MemberId); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (r *HeartbeatRequest) decode(pd packetDecoder, version int16) (err error) {
-	if r.GroupId, err = pd.getString(); err != nil {
-		return
-	}
-	if r.GenerationId, err = pd.getInt32(); err != nil {
-		return
-	}
-	if r.MemberId, err = pd.getString(); err != nil {
-		return
-	}
-
-	return nil
-}
-
-func (r *HeartbeatRequest) key() int16 {
-	return 12
-}
-
-func (r *HeartbeatRequest) version() int16 {
-	return 0
-}
-
-func (r *HeartbeatRequest) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/heartbeat_response.go b/vendor/gopkg.in/Shopify/sarama.v1/heartbeat_response.go
deleted file mode 100644
index 766f5fd..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/heartbeat_response.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package sarama
-
-type HeartbeatResponse struct {
-	Err KError
-}
-
-func (r *HeartbeatResponse) encode(pe packetEncoder) error {
-	pe.putInt16(int16(r.Err))
-	return nil
-}
-
-func (r *HeartbeatResponse) decode(pd packetDecoder, version int16) error {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	r.Err = KError(kerr)
-
-	return nil
-}
-
-func (r *HeartbeatResponse) key() int16 {
-	return 12
-}
-
-func (r *HeartbeatResponse) version() int16 {
-	return 0
-}
-
-func (r *HeartbeatResponse) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/init_producer_id_request.go b/vendor/gopkg.in/Shopify/sarama.v1/init_producer_id_request.go
deleted file mode 100644
index 8ceb6c2..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/init_producer_id_request.go
+++ /dev/null
@@ -1,43 +0,0 @@
-package sarama
-
-import "time"
-
-type InitProducerIDRequest struct {
-	TransactionalID    *string
-	TransactionTimeout time.Duration
-}
-
-func (i *InitProducerIDRequest) encode(pe packetEncoder) error {
-	if err := pe.putNullableString(i.TransactionalID); err != nil {
-		return err
-	}
-	pe.putInt32(int32(i.TransactionTimeout / time.Millisecond))
-
-	return nil
-}
-
-func (i *InitProducerIDRequest) decode(pd packetDecoder, version int16) (err error) {
-	if i.TransactionalID, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	timeout, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	i.TransactionTimeout = time.Duration(timeout) * time.Millisecond
-
-	return nil
-}
-
-func (i *InitProducerIDRequest) key() int16 {
-	return 22
-}
-
-func (i *InitProducerIDRequest) version() int16 {
-	return 0
-}
-
-func (i *InitProducerIDRequest) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/init_producer_id_response.go b/vendor/gopkg.in/Shopify/sarama.v1/init_producer_id_response.go
deleted file mode 100644
index 1b32eb0..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/init_producer_id_response.go
+++ /dev/null
@@ -1,55 +0,0 @@
-package sarama
-
-import "time"
-
-type InitProducerIDResponse struct {
-	ThrottleTime  time.Duration
-	Err           KError
-	ProducerID    int64
-	ProducerEpoch int16
-}
-
-func (i *InitProducerIDResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(i.ThrottleTime / time.Millisecond))
-	pe.putInt16(int16(i.Err))
-	pe.putInt64(i.ProducerID)
-	pe.putInt16(i.ProducerEpoch)
-
-	return nil
-}
-
-func (i *InitProducerIDResponse) decode(pd packetDecoder, version int16) (err error) {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	i.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	i.Err = KError(kerr)
-
-	if i.ProducerID, err = pd.getInt64(); err != nil {
-		return err
-	}
-
-	if i.ProducerEpoch, err = pd.getInt16(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (i *InitProducerIDResponse) key() int16 {
-	return 22
-}
-
-func (i *InitProducerIDResponse) version() int16 {
-	return 0
-}
-
-func (i *InitProducerIDResponse) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/join_group_request.go b/vendor/gopkg.in/Shopify/sarama.v1/join_group_request.go
deleted file mode 100644
index 97e9299..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/join_group_request.go
+++ /dev/null
@@ -1,163 +0,0 @@
-package sarama
-
-type GroupProtocol struct {
-	Name     string
-	Metadata []byte
-}
-
-func (p *GroupProtocol) decode(pd packetDecoder) (err error) {
-	p.Name, err = pd.getString()
-	if err != nil {
-		return err
-	}
-	p.Metadata, err = pd.getBytes()
-	return err
-}
-
-func (p *GroupProtocol) encode(pe packetEncoder) (err error) {
-	if err := pe.putString(p.Name); err != nil {
-		return err
-	}
-	if err := pe.putBytes(p.Metadata); err != nil {
-		return err
-	}
-	return nil
-}
-
-type JoinGroupRequest struct {
-	Version               int16
-	GroupId               string
-	SessionTimeout        int32
-	RebalanceTimeout      int32
-	MemberId              string
-	ProtocolType          string
-	GroupProtocols        map[string][]byte // deprecated; use OrderedGroupProtocols
-	OrderedGroupProtocols []*GroupProtocol
-}
-
-func (r *JoinGroupRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(r.GroupId); err != nil {
-		return err
-	}
-	pe.putInt32(r.SessionTimeout)
-	if r.Version >= 1 {
-		pe.putInt32(r.RebalanceTimeout)
-	}
-	if err := pe.putString(r.MemberId); err != nil {
-		return err
-	}
-	if err := pe.putString(r.ProtocolType); err != nil {
-		return err
-	}
-
-	if len(r.GroupProtocols) > 0 {
-		if len(r.OrderedGroupProtocols) > 0 {
-			return PacketDecodingError{"cannot specify both GroupProtocols and OrderedGroupProtocols on JoinGroupRequest"}
-		}
-
-		if err := pe.putArrayLength(len(r.GroupProtocols)); err != nil {
-			return err
-		}
-		for name, metadata := range r.GroupProtocols {
-			if err := pe.putString(name); err != nil {
-				return err
-			}
-			if err := pe.putBytes(metadata); err != nil {
-				return err
-			}
-		}
-	} else {
-		if err := pe.putArrayLength(len(r.OrderedGroupProtocols)); err != nil {
-			return err
-		}
-		for _, protocol := range r.OrderedGroupProtocols {
-			if err := protocol.encode(pe); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-func (r *JoinGroupRequest) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-
-	if r.GroupId, err = pd.getString(); err != nil {
-		return
-	}
-
-	if r.SessionTimeout, err = pd.getInt32(); err != nil {
-		return
-	}
-
-	if version >= 1 {
-		if r.RebalanceTimeout, err = pd.getInt32(); err != nil {
-			return err
-		}
-	}
-
-	if r.MemberId, err = pd.getString(); err != nil {
-		return
-	}
-
-	if r.ProtocolType, err = pd.getString(); err != nil {
-		return
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if n == 0 {
-		return nil
-	}
-
-	r.GroupProtocols = make(map[string][]byte)
-	for i := 0; i < n; i++ {
-		protocol := &GroupProtocol{}
-		if err := protocol.decode(pd); err != nil {
-			return err
-		}
-		r.GroupProtocols[protocol.Name] = protocol.Metadata
-		r.OrderedGroupProtocols = append(r.OrderedGroupProtocols, protocol)
-	}
-
-	return nil
-}
-
-func (r *JoinGroupRequest) key() int16 {
-	return 11
-}
-
-func (r *JoinGroupRequest) version() int16 {
-	return r.Version
-}
-
-func (r *JoinGroupRequest) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 2:
-		return V0_11_0_0
-	case 1:
-		return V0_10_1_0
-	default:
-		return V0_9_0_0
-	}
-}
-
-func (r *JoinGroupRequest) AddGroupProtocol(name string, metadata []byte) {
-	r.OrderedGroupProtocols = append(r.OrderedGroupProtocols, &GroupProtocol{
-		Name:     name,
-		Metadata: metadata,
-	})
-}
-
-func (r *JoinGroupRequest) AddGroupProtocolMetadata(name string, metadata *ConsumerGroupMemberMetadata) error {
-	bin, err := encode(metadata, nil)
-	if err != nil {
-		return err
-	}
-
-	r.AddGroupProtocol(name, bin)
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/join_group_response.go b/vendor/gopkg.in/Shopify/sarama.v1/join_group_response.go
deleted file mode 100644
index 5752acc..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/join_group_response.go
+++ /dev/null
@@ -1,135 +0,0 @@
-package sarama
-
-type JoinGroupResponse struct {
-	Version       int16
-	ThrottleTime  int32
-	Err           KError
-	GenerationId  int32
-	GroupProtocol string
-	LeaderId      string
-	MemberId      string
-	Members       map[string][]byte
-}
-
-func (r *JoinGroupResponse) GetMembers() (map[string]ConsumerGroupMemberMetadata, error) {
-	members := make(map[string]ConsumerGroupMemberMetadata, len(r.Members))
-	for id, bin := range r.Members {
-		meta := new(ConsumerGroupMemberMetadata)
-		if err := decode(bin, meta); err != nil {
-			return nil, err
-		}
-		members[id] = *meta
-	}
-	return members, nil
-}
-
-func (r *JoinGroupResponse) encode(pe packetEncoder) error {
-	if r.Version >= 2 {
-		pe.putInt32(r.ThrottleTime)
-	}
-	pe.putInt16(int16(r.Err))
-	pe.putInt32(r.GenerationId)
-
-	if err := pe.putString(r.GroupProtocol); err != nil {
-		return err
-	}
-	if err := pe.putString(r.LeaderId); err != nil {
-		return err
-	}
-	if err := pe.putString(r.MemberId); err != nil {
-		return err
-	}
-
-	if err := pe.putArrayLength(len(r.Members)); err != nil {
-		return err
-	}
-
-	for memberId, memberMetadata := range r.Members {
-		if err := pe.putString(memberId); err != nil {
-			return err
-		}
-
-		if err := pe.putBytes(memberMetadata); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *JoinGroupResponse) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-
-	if version >= 2 {
-		if r.ThrottleTime, err = pd.getInt32(); err != nil {
-			return
-		}
-	}
-
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-
-	r.Err = KError(kerr)
-
-	if r.GenerationId, err = pd.getInt32(); err != nil {
-		return
-	}
-
-	if r.GroupProtocol, err = pd.getString(); err != nil {
-		return
-	}
-
-	if r.LeaderId, err = pd.getString(); err != nil {
-		return
-	}
-
-	if r.MemberId, err = pd.getString(); err != nil {
-		return
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if n == 0 {
-		return nil
-	}
-
-	r.Members = make(map[string][]byte)
-	for i := 0; i < n; i++ {
-		memberId, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		memberMetadata, err := pd.getBytes()
-		if err != nil {
-			return err
-		}
-
-		r.Members[memberId] = memberMetadata
-	}
-
-	return nil
-}
-
-func (r *JoinGroupResponse) key() int16 {
-	return 11
-}
-
-func (r *JoinGroupResponse) version() int16 {
-	return r.Version
-}
-
-func (r *JoinGroupResponse) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 2:
-		return V0_11_0_0
-	case 1:
-		return V0_10_1_0
-	default:
-		return V0_9_0_0
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/leave_group_request.go b/vendor/gopkg.in/Shopify/sarama.v1/leave_group_request.go
deleted file mode 100644
index e177427..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/leave_group_request.go
+++ /dev/null
@@ -1,40 +0,0 @@
-package sarama
-
-type LeaveGroupRequest struct {
-	GroupId  string
-	MemberId string
-}
-
-func (r *LeaveGroupRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(r.GroupId); err != nil {
-		return err
-	}
-	if err := pe.putString(r.MemberId); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (r *LeaveGroupRequest) decode(pd packetDecoder, version int16) (err error) {
-	if r.GroupId, err = pd.getString(); err != nil {
-		return
-	}
-	if r.MemberId, err = pd.getString(); err != nil {
-		return
-	}
-
-	return nil
-}
-
-func (r *LeaveGroupRequest) key() int16 {
-	return 13
-}
-
-func (r *LeaveGroupRequest) version() int16 {
-	return 0
-}
-
-func (r *LeaveGroupRequest) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/leave_group_response.go b/vendor/gopkg.in/Shopify/sarama.v1/leave_group_response.go
deleted file mode 100644
index d60c626..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/leave_group_response.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package sarama
-
-type LeaveGroupResponse struct {
-	Err KError
-}
-
-func (r *LeaveGroupResponse) encode(pe packetEncoder) error {
-	pe.putInt16(int16(r.Err))
-	return nil
-}
-
-func (r *LeaveGroupResponse) decode(pd packetDecoder, version int16) (err error) {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	r.Err = KError(kerr)
-
-	return nil
-}
-
-func (r *LeaveGroupResponse) key() int16 {
-	return 13
-}
-
-func (r *LeaveGroupResponse) version() int16 {
-	return 0
-}
-
-func (r *LeaveGroupResponse) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/length_field.go b/vendor/gopkg.in/Shopify/sarama.v1/length_field.go
deleted file mode 100644
index da199a7..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/length_field.go
+++ /dev/null
@@ -1,82 +0,0 @@
-package sarama
-
-import "encoding/binary"
-
-// LengthField implements the PushEncoder and PushDecoder interfaces for calculating 4-byte lengths.
-type lengthField struct {
-	startOffset int
-	length      int32
-}
-
-func (l *lengthField) decode(pd packetDecoder) error {
-	var err error
-	l.length, err = pd.getInt32()
-	if err != nil {
-		return err
-	}
-	if l.length > int32(pd.remaining()) {
-		return ErrInsufficientData
-	}
-	return nil
-}
-
-func (l *lengthField) saveOffset(in int) {
-	l.startOffset = in
-}
-
-func (l *lengthField) reserveLength() int {
-	return 4
-}
-
-func (l *lengthField) run(curOffset int, buf []byte) error {
-	binary.BigEndian.PutUint32(buf[l.startOffset:], uint32(curOffset-l.startOffset-4))
-	return nil
-}
-
-func (l *lengthField) check(curOffset int, buf []byte) error {
-	if int32(curOffset-l.startOffset-4) != l.length {
-		return PacketDecodingError{"length field invalid"}
-	}
-
-	return nil
-}
-
-type varintLengthField struct {
-	startOffset int
-	length      int64
-}
-
-func (l *varintLengthField) decode(pd packetDecoder) error {
-	var err error
-	l.length, err = pd.getVarint()
-	return err
-}
-
-func (l *varintLengthField) saveOffset(in int) {
-	l.startOffset = in
-}
-
-func (l *varintLengthField) adjustLength(currOffset int) int {
-	oldFieldSize := l.reserveLength()
-	l.length = int64(currOffset - l.startOffset - oldFieldSize)
-
-	return l.reserveLength() - oldFieldSize
-}
-
-func (l *varintLengthField) reserveLength() int {
-	var tmp [binary.MaxVarintLen64]byte
-	return binary.PutVarint(tmp[:], l.length)
-}
-
-func (l *varintLengthField) run(curOffset int, buf []byte) error {
-	binary.PutVarint(buf[l.startOffset:], l.length)
-	return nil
-}
-
-func (l *varintLengthField) check(curOffset int, buf []byte) error {
-	if int64(curOffset-l.startOffset-l.reserveLength()) != l.length {
-		return PacketDecodingError{"length field invalid"}
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/list_groups_request.go b/vendor/gopkg.in/Shopify/sarama.v1/list_groups_request.go
deleted file mode 100644
index 3b16abf..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/list_groups_request.go
+++ /dev/null
@@ -1,24 +0,0 @@
-package sarama
-
-type ListGroupsRequest struct {
-}
-
-func (r *ListGroupsRequest) encode(pe packetEncoder) error {
-	return nil
-}
-
-func (r *ListGroupsRequest) decode(pd packetDecoder, version int16) (err error) {
-	return nil
-}
-
-func (r *ListGroupsRequest) key() int16 {
-	return 16
-}
-
-func (r *ListGroupsRequest) version() int16 {
-	return 0
-}
-
-func (r *ListGroupsRequest) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/list_groups_response.go b/vendor/gopkg.in/Shopify/sarama.v1/list_groups_response.go
deleted file mode 100644
index 56115d4..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/list_groups_response.go
+++ /dev/null
@@ -1,69 +0,0 @@
-package sarama
-
-type ListGroupsResponse struct {
-	Err    KError
-	Groups map[string]string
-}
-
-func (r *ListGroupsResponse) encode(pe packetEncoder) error {
-	pe.putInt16(int16(r.Err))
-
-	if err := pe.putArrayLength(len(r.Groups)); err != nil {
-		return err
-	}
-	for groupId, protocolType := range r.Groups {
-		if err := pe.putString(groupId); err != nil {
-			return err
-		}
-		if err := pe.putString(protocolType); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *ListGroupsResponse) decode(pd packetDecoder, version int16) error {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-
-	r.Err = KError(kerr)
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if n == 0 {
-		return nil
-	}
-
-	r.Groups = make(map[string]string)
-	for i := 0; i < n; i++ {
-		groupId, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		protocolType, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		r.Groups[groupId] = protocolType
-	}
-
-	return nil
-}
-
-func (r *ListGroupsResponse) key() int16 {
-	return 16
-}
-
-func (r *ListGroupsResponse) version() int16 {
-	return 0
-}
-
-func (r *ListGroupsResponse) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/message.go b/vendor/gopkg.in/Shopify/sarama.v1/message.go
deleted file mode 100644
index f64c79b..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/message.go
+++ /dev/null
@@ -1,165 +0,0 @@
-package sarama
-
-import (
-	"fmt"
-	"time"
-)
-
-// The lowest 3 bits contain the compression codec used for the message
-const compressionCodecMask int8 = 0x07
-
-// Bit 3 set for "LogAppend" timestamps
-const timestampTypeMask = 0x08
-
-// CompressionCodec represents the various compression codecs recognized by Kafka in messages.
-type CompressionCodec int8
-
-const (
-	CompressionNone   CompressionCodec = 0
-	CompressionGZIP   CompressionCodec = 1
-	CompressionSnappy CompressionCodec = 2
-	CompressionLZ4    CompressionCodec = 3
-	CompressionZSTD   CompressionCodec = 4
-)
-
-func (cc CompressionCodec) String() string {
-	return []string{
-		"none",
-		"gzip",
-		"snappy",
-		"lz4",
-	}[int(cc)]
-}
-
-// CompressionLevelDefault is the constant to use in CompressionLevel
-// to have the default compression level for any codec. The value is picked
-// that we don't use any existing compression levels.
-const CompressionLevelDefault = -1000
-
-type Message struct {
-	Codec            CompressionCodec // codec used to compress the message contents
-	CompressionLevel int              // compression level
-	LogAppendTime    bool             // the used timestamp is LogAppendTime
-	Key              []byte           // the message key, may be nil
-	Value            []byte           // the message contents
-	Set              *MessageSet      // the message set a message might wrap
-	Version          int8             // v1 requires Kafka 0.10
-	Timestamp        time.Time        // the timestamp of the message (version 1+ only)
-
-	compressedCache []byte
-	compressedSize  int // used for computing the compression ratio metrics
-}
-
-func (m *Message) encode(pe packetEncoder) error {
-	pe.push(newCRC32Field(crcIEEE))
-
-	pe.putInt8(m.Version)
-
-	attributes := int8(m.Codec) & compressionCodecMask
-	if m.LogAppendTime {
-		attributes |= timestampTypeMask
-	}
-	pe.putInt8(attributes)
-
-	if m.Version >= 1 {
-		if err := (Timestamp{&m.Timestamp}).encode(pe); err != nil {
-			return err
-		}
-	}
-
-	err := pe.putBytes(m.Key)
-	if err != nil {
-		return err
-	}
-
-	var payload []byte
-
-	if m.compressedCache != nil {
-		payload = m.compressedCache
-		m.compressedCache = nil
-	} else if m.Value != nil {
-
-		payload, err = compress(m.Codec, m.CompressionLevel, m.Value)
-		if err != nil {
-			return err
-		}
-		m.compressedCache = payload
-		// Keep in mind the compressed payload size for metric gathering
-		m.compressedSize = len(payload)
-	}
-
-	if err = pe.putBytes(payload); err != nil {
-		return err
-	}
-
-	return pe.pop()
-}
-
-func (m *Message) decode(pd packetDecoder) (err error) {
-	err = pd.push(newCRC32Field(crcIEEE))
-	if err != nil {
-		return err
-	}
-
-	m.Version, err = pd.getInt8()
-	if err != nil {
-		return err
-	}
-
-	if m.Version > 1 {
-		return PacketDecodingError{fmt.Sprintf("unknown magic byte (%v)", m.Version)}
-	}
-
-	attribute, err := pd.getInt8()
-	if err != nil {
-		return err
-	}
-	m.Codec = CompressionCodec(attribute & compressionCodecMask)
-	m.LogAppendTime = attribute&timestampTypeMask == timestampTypeMask
-
-	if m.Version == 1 {
-		if err := (Timestamp{&m.Timestamp}).decode(pd); err != nil {
-			return err
-		}
-	}
-
-	m.Key, err = pd.getBytes()
-	if err != nil {
-		return err
-	}
-
-	m.Value, err = pd.getBytes()
-	if err != nil {
-		return err
-	}
-
-	// Required for deep equal assertion during tests but might be useful
-	// for future metrics about the compression ratio in fetch requests
-	m.compressedSize = len(m.Value)
-
-	switch m.Codec {
-	case CompressionNone:
-		// nothing to do
-	default:
-		if m.Value == nil {
-			break
-		}
-
-		m.Value, err = decompress(m.Codec, m.Value)
-		if err != nil {
-			return err
-		}
-		if err := m.decodeSet(); err != nil {
-			return err
-		}
-	}
-
-	return pd.pop()
-}
-
-// decodes a message set from a previously encoded bulk-message
-func (m *Message) decodeSet() (err error) {
-	pd := realDecoder{raw: m.Value}
-	m.Set = &MessageSet{}
-	return m.Set.decode(&pd)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/message_set.go b/vendor/gopkg.in/Shopify/sarama.v1/message_set.go
deleted file mode 100644
index 600c7c4..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/message_set.go
+++ /dev/null
@@ -1,108 +0,0 @@
-package sarama
-
-type MessageBlock struct {
-	Offset int64
-	Msg    *Message
-}
-
-// Messages convenience helper which returns either all the
-// messages that are wrapped in this block
-func (msb *MessageBlock) Messages() []*MessageBlock {
-	if msb.Msg.Set != nil {
-		return msb.Msg.Set.Messages
-	}
-	return []*MessageBlock{msb}
-}
-
-func (msb *MessageBlock) encode(pe packetEncoder) error {
-	pe.putInt64(msb.Offset)
-	pe.push(&lengthField{})
-	err := msb.Msg.encode(pe)
-	if err != nil {
-		return err
-	}
-	return pe.pop()
-}
-
-func (msb *MessageBlock) decode(pd packetDecoder) (err error) {
-	if msb.Offset, err = pd.getInt64(); err != nil {
-		return err
-	}
-
-	if err = pd.push(&lengthField{}); err != nil {
-		return err
-	}
-
-	msb.Msg = new(Message)
-	if err = msb.Msg.decode(pd); err != nil {
-		return err
-	}
-
-	if err = pd.pop(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-type MessageSet struct {
-	PartialTrailingMessage bool // whether the set on the wire contained an incomplete trailing MessageBlock
-	OverflowMessage        bool // whether the set on the wire contained an overflow message
-	Messages               []*MessageBlock
-}
-
-func (ms *MessageSet) encode(pe packetEncoder) error {
-	for i := range ms.Messages {
-		err := ms.Messages[i].encode(pe)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (ms *MessageSet) decode(pd packetDecoder) (err error) {
-	ms.Messages = nil
-
-	for pd.remaining() > 0 {
-		magic, err := magicValue(pd)
-		if err != nil {
-			if err == ErrInsufficientData {
-				ms.PartialTrailingMessage = true
-				return nil
-			}
-			return err
-		}
-
-		if magic > 1 {
-			return nil
-		}
-
-		msb := new(MessageBlock)
-		err = msb.decode(pd)
-		switch err {
-		case nil:
-			ms.Messages = append(ms.Messages, msb)
-		case ErrInsufficientData:
-			// As an optimization the server is allowed to return a partial message at the
-			// end of the message set. Clients should handle this case. So we just ignore such things.
-			if msb.Offset == -1 {
-				// This is an overflow message caused by chunked down conversion
-				ms.OverflowMessage = true
-			} else {
-				ms.PartialTrailingMessage = true
-			}
-			return nil
-		default:
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (ms *MessageSet) addMessage(msg *Message) {
-	block := new(MessageBlock)
-	block.Msg = msg
-	ms.Messages = append(ms.Messages, block)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/metadata_request.go b/vendor/gopkg.in/Shopify/sarama.v1/metadata_request.go
deleted file mode 100644
index 17dc428..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/metadata_request.go
+++ /dev/null
@@ -1,88 +0,0 @@
-package sarama
-
-type MetadataRequest struct {
-	Version                int16
-	Topics                 []string
-	AllowAutoTopicCreation bool
-}
-
-func (r *MetadataRequest) encode(pe packetEncoder) error {
-	if r.Version < 0 || r.Version > 5 {
-		return PacketEncodingError{"invalid or unsupported MetadataRequest version field"}
-	}
-	if r.Version == 0 || len(r.Topics) > 0 {
-		err := pe.putArrayLength(len(r.Topics))
-		if err != nil {
-			return err
-		}
-
-		for i := range r.Topics {
-			err = pe.putString(r.Topics[i])
-			if err != nil {
-				return err
-			}
-		}
-	} else {
-		pe.putInt32(-1)
-	}
-	if r.Version > 3 {
-		pe.putBool(r.AllowAutoTopicCreation)
-	}
-	return nil
-}
-
-func (r *MetadataRequest) decode(pd packetDecoder, version int16) error {
-	r.Version = version
-	size, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	if size < 0 {
-		return nil
-	} else {
-		topicCount := size
-		if topicCount == 0 {
-			return nil
-		}
-
-		r.Topics = make([]string, topicCount)
-		for i := range r.Topics {
-			topic, err := pd.getString()
-			if err != nil {
-				return err
-			}
-			r.Topics[i] = topic
-		}
-	}
-	if r.Version > 3 {
-		autoCreation, err := pd.getBool()
-		if err != nil {
-			return err
-		}
-		r.AllowAutoTopicCreation = autoCreation
-	}
-	return nil
-}
-
-func (r *MetadataRequest) key() int16 {
-	return 3
-}
-
-func (r *MetadataRequest) version() int16 {
-	return r.Version
-}
-
-func (r *MetadataRequest) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_10_0_0
-	case 2:
-		return V0_10_1_0
-	case 3, 4:
-		return V0_11_0_0
-	case 5:
-		return V1_0_0_0
-	default:
-		return MinVersion
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/metadata_response.go b/vendor/gopkg.in/Shopify/sarama.v1/metadata_response.go
deleted file mode 100644
index c402d05..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/metadata_response.go
+++ /dev/null
@@ -1,321 +0,0 @@
-package sarama
-
-type PartitionMetadata struct {
-	Err             KError
-	ID              int32
-	Leader          int32
-	Replicas        []int32
-	Isr             []int32
-	OfflineReplicas []int32
-}
-
-func (pm *PartitionMetadata) decode(pd packetDecoder, version int16) (err error) {
-	tmp, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	pm.Err = KError(tmp)
-
-	pm.ID, err = pd.getInt32()
-	if err != nil {
-		return err
-	}
-
-	pm.Leader, err = pd.getInt32()
-	if err != nil {
-		return err
-	}
-
-	pm.Replicas, err = pd.getInt32Array()
-	if err != nil {
-		return err
-	}
-
-	pm.Isr, err = pd.getInt32Array()
-	if err != nil {
-		return err
-	}
-
-	if version >= 5 {
-		pm.OfflineReplicas, err = pd.getInt32Array()
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (pm *PartitionMetadata) encode(pe packetEncoder, version int16) (err error) {
-	pe.putInt16(int16(pm.Err))
-	pe.putInt32(pm.ID)
-	pe.putInt32(pm.Leader)
-
-	err = pe.putInt32Array(pm.Replicas)
-	if err != nil {
-		return err
-	}
-
-	err = pe.putInt32Array(pm.Isr)
-	if err != nil {
-		return err
-	}
-
-	if version >= 5 {
-		err = pe.putInt32Array(pm.OfflineReplicas)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-type TopicMetadata struct {
-	Err        KError
-	Name       string
-	IsInternal bool // Only valid for Version >= 1
-	Partitions []*PartitionMetadata
-}
-
-func (tm *TopicMetadata) decode(pd packetDecoder, version int16) (err error) {
-	tmp, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	tm.Err = KError(tmp)
-
-	tm.Name, err = pd.getString()
-	if err != nil {
-		return err
-	}
-
-	if version >= 1 {
-		tm.IsInternal, err = pd.getBool()
-		if err != nil {
-			return err
-		}
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	tm.Partitions = make([]*PartitionMetadata, n)
-	for i := 0; i < n; i++ {
-		tm.Partitions[i] = new(PartitionMetadata)
-		err = tm.Partitions[i].decode(pd, version)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (tm *TopicMetadata) encode(pe packetEncoder, version int16) (err error) {
-	pe.putInt16(int16(tm.Err))
-
-	err = pe.putString(tm.Name)
-	if err != nil {
-		return err
-	}
-
-	if version >= 1 {
-		pe.putBool(tm.IsInternal)
-	}
-
-	err = pe.putArrayLength(len(tm.Partitions))
-	if err != nil {
-		return err
-	}
-
-	for _, pm := range tm.Partitions {
-		err = pm.encode(pe, version)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-type MetadataResponse struct {
-	Version        int16
-	ThrottleTimeMs int32
-	Brokers        []*Broker
-	ClusterID      *string
-	ControllerID   int32
-	Topics         []*TopicMetadata
-}
-
-func (r *MetadataResponse) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-
-	if version >= 3 {
-		r.ThrottleTimeMs, err = pd.getInt32()
-		if err != nil {
-			return err
-		}
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Brokers = make([]*Broker, n)
-	for i := 0; i < n; i++ {
-		r.Brokers[i] = new(Broker)
-		err = r.Brokers[i].decode(pd, version)
-		if err != nil {
-			return err
-		}
-	}
-
-	if version >= 2 {
-		r.ClusterID, err = pd.getNullableString()
-		if err != nil {
-			return err
-		}
-	}
-
-	if version >= 1 {
-		r.ControllerID, err = pd.getInt32()
-		if err != nil {
-			return err
-		}
-	} else {
-		r.ControllerID = -1
-	}
-
-	n, err = pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Topics = make([]*TopicMetadata, n)
-	for i := 0; i < n; i++ {
-		r.Topics[i] = new(TopicMetadata)
-		err = r.Topics[i].decode(pd, version)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *MetadataResponse) encode(pe packetEncoder) error {
-	if r.Version >= 3 {
-		pe.putInt32(r.ThrottleTimeMs)
-	}
-
-	err := pe.putArrayLength(len(r.Brokers))
-	if err != nil {
-		return err
-	}
-	for _, broker := range r.Brokers {
-		err = broker.encode(pe, r.Version)
-		if err != nil {
-			return err
-		}
-	}
-
-	if r.Version >= 2 {
-		err := pe.putNullableString(r.ClusterID)
-		if err != nil {
-			return err
-		}
-	}
-
-	if r.Version >= 1 {
-		pe.putInt32(r.ControllerID)
-	}
-
-	err = pe.putArrayLength(len(r.Topics))
-	if err != nil {
-		return err
-	}
-	for _, tm := range r.Topics {
-		err = tm.encode(pe, r.Version)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *MetadataResponse) key() int16 {
-	return 3
-}
-
-func (r *MetadataResponse) version() int16 {
-	return r.Version
-}
-
-func (r *MetadataResponse) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_10_0_0
-	case 2:
-		return V0_10_1_0
-	case 3, 4:
-		return V0_11_0_0
-	case 5:
-		return V1_0_0_0
-	default:
-		return MinVersion
-	}
-}
-
-// testing API
-
-func (r *MetadataResponse) AddBroker(addr string, id int32) {
-	r.Brokers = append(r.Brokers, &Broker{id: id, addr: addr})
-}
-
-func (r *MetadataResponse) AddTopic(topic string, err KError) *TopicMetadata {
-	var tmatch *TopicMetadata
-
-	for _, tm := range r.Topics {
-		if tm.Name == topic {
-			tmatch = tm
-			goto foundTopic
-		}
-	}
-
-	tmatch = new(TopicMetadata)
-	tmatch.Name = topic
-	r.Topics = append(r.Topics, tmatch)
-
-foundTopic:
-
-	tmatch.Err = err
-	return tmatch
-}
-
-func (r *MetadataResponse) AddTopicPartition(topic string, partition, brokerID int32, replicas, isr []int32, err KError) {
-	tmatch := r.AddTopic(topic, ErrNoError)
-	var pmatch *PartitionMetadata
-
-	for _, pm := range tmatch.Partitions {
-		if pm.ID == partition {
-			pmatch = pm
-			goto foundPartition
-		}
-	}
-
-	pmatch = new(PartitionMetadata)
-	pmatch.ID = partition
-	tmatch.Partitions = append(tmatch.Partitions, pmatch)
-
-foundPartition:
-
-	pmatch.Leader = brokerID
-	pmatch.Replicas = replicas
-	pmatch.Isr = isr
-	pmatch.Err = err
-
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/metrics.go b/vendor/gopkg.in/Shopify/sarama.v1/metrics.go
deleted file mode 100644
index 4869708..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/metrics.go
+++ /dev/null
@@ -1,51 +0,0 @@
-package sarama
-
-import (
-	"fmt"
-	"strings"
-
-	"github.com/rcrowley/go-metrics"
-)
-
-// Use exponentially decaying reservoir for sampling histograms with the same defaults as the Java library:
-// 1028 elements, which offers a 99.9% confidence level with a 5% margin of error assuming a normal distribution,
-// and an alpha factor of 0.015, which heavily biases the reservoir to the past 5 minutes of measurements.
-// See https://github.com/dropwizard/metrics/blob/v3.1.0/metrics-core/src/main/java/com/codahale/metrics/ExponentiallyDecayingReservoir.java#L38
-const (
-	metricsReservoirSize = 1028
-	metricsAlphaFactor   = 0.015
-)
-
-func getOrRegisterHistogram(name string, r metrics.Registry) metrics.Histogram {
-	return r.GetOrRegister(name, func() metrics.Histogram {
-		return metrics.NewHistogram(metrics.NewExpDecaySample(metricsReservoirSize, metricsAlphaFactor))
-	}).(metrics.Histogram)
-}
-
-func getMetricNameForBroker(name string, broker *Broker) string {
-	// Use broker id like the Java client as it does not contain '.' or ':' characters that
-	// can be interpreted as special character by monitoring tool (e.g. Graphite)
-	return fmt.Sprintf(name+"-for-broker-%d", broker.ID())
-}
-
-func getOrRegisterBrokerMeter(name string, broker *Broker, r metrics.Registry) metrics.Meter {
-	return metrics.GetOrRegisterMeter(getMetricNameForBroker(name, broker), r)
-}
-
-func getOrRegisterBrokerHistogram(name string, broker *Broker, r metrics.Registry) metrics.Histogram {
-	return getOrRegisterHistogram(getMetricNameForBroker(name, broker), r)
-}
-
-func getMetricNameForTopic(name string, topic string) string {
-	// Convert dot to _ since reporters like Graphite typically use dot to represent hierarchy
-	// cf. KAFKA-1902 and KAFKA-2337
-	return fmt.Sprintf(name+"-for-topic-%s", strings.Replace(topic, ".", "_", -1))
-}
-
-func getOrRegisterTopicMeter(name string, topic string, r metrics.Registry) metrics.Meter {
-	return metrics.GetOrRegisterMeter(getMetricNameForTopic(name, topic), r)
-}
-
-func getOrRegisterTopicHistogram(name string, topic string, r metrics.Registry) metrics.Histogram {
-	return getOrRegisterHistogram(getMetricNameForTopic(name, topic), r)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/mockbroker.go b/vendor/gopkg.in/Shopify/sarama.v1/mockbroker.go
deleted file mode 100644
index 55ef1e2..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/mockbroker.go
+++ /dev/null
@@ -1,330 +0,0 @@
-package sarama
-
-import (
-	"bytes"
-	"encoding/binary"
-	"fmt"
-	"io"
-	"net"
-	"reflect"
-	"strconv"
-	"sync"
-	"time"
-
-	"github.com/davecgh/go-spew/spew"
-)
-
-const (
-	expectationTimeout = 500 * time.Millisecond
-)
-
-type requestHandlerFunc func(req *request) (res encoder)
-
-// RequestNotifierFunc is invoked when a mock broker processes a request successfully
-// and will provides the number of bytes read and written.
-type RequestNotifierFunc func(bytesRead, bytesWritten int)
-
-// MockBroker is a mock Kafka broker that is used in unit tests. It is exposed
-// to facilitate testing of higher level or specialized consumers and producers
-// built on top of Sarama. Note that it does not 'mimic' the Kafka API protocol,
-// but rather provides a facility to do that. It takes care of the TCP
-// transport, request unmarshaling, response marshaling, and makes it the test
-// writer responsibility to program correct according to the Kafka API protocol
-// MockBroker behaviour.
-//
-// MockBroker is implemented as a TCP server listening on a kernel-selected
-// localhost port that can accept many connections. It reads Kafka requests
-// from that connection and returns responses programmed by the SetHandlerByMap
-// function. If a MockBroker receives a request that it has no programmed
-// response for, then it returns nothing and the request times out.
-//
-// A set of MockRequest builders to define mappings used by MockBroker is
-// provided by Sarama. But users can develop MockRequests of their own and use
-// them along with or instead of the standard ones.
-//
-// When running tests with MockBroker it is strongly recommended to specify
-// a timeout to `go test` so that if the broker hangs waiting for a response,
-// the test panics.
-//
-// It is not necessary to prefix message length or correlation ID to your
-// response bytes, the server does that automatically as a convenience.
-type MockBroker struct {
-	brokerID     int32
-	port         int32
-	closing      chan none
-	stopper      chan none
-	expectations chan encoder
-	listener     net.Listener
-	t            TestReporter
-	latency      time.Duration
-	handler      requestHandlerFunc
-	notifier     RequestNotifierFunc
-	history      []RequestResponse
-	lock         sync.Mutex
-}
-
-// RequestResponse represents a Request/Response pair processed by MockBroker.
-type RequestResponse struct {
-	Request  protocolBody
-	Response encoder
-}
-
-// SetLatency makes broker pause for the specified period every time before
-// replying.
-func (b *MockBroker) SetLatency(latency time.Duration) {
-	b.latency = latency
-}
-
-// SetHandlerByMap defines mapping of Request types to MockResponses. When a
-// request is received by the broker, it looks up the request type in the map
-// and uses the found MockResponse instance to generate an appropriate reply.
-// If the request type is not found in the map then nothing is sent.
-func (b *MockBroker) SetHandlerByMap(handlerMap map[string]MockResponse) {
-	b.setHandler(func(req *request) (res encoder) {
-		reqTypeName := reflect.TypeOf(req.body).Elem().Name()
-		mockResponse := handlerMap[reqTypeName]
-		if mockResponse == nil {
-			return nil
-		}
-		return mockResponse.For(req.body)
-	})
-}
-
-// SetNotifier set a function that will get invoked whenever a request has been
-// processed successfully and will provide the number of bytes read and written
-func (b *MockBroker) SetNotifier(notifier RequestNotifierFunc) {
-	b.lock.Lock()
-	b.notifier = notifier
-	b.lock.Unlock()
-}
-
-// BrokerID returns broker ID assigned to the broker.
-func (b *MockBroker) BrokerID() int32 {
-	return b.brokerID
-}
-
-// History returns a slice of RequestResponse pairs in the order they were
-// processed by the broker. Note that in case of multiple connections to the
-// broker the order expected by a test can be different from the order recorded
-// in the history, unless some synchronization is implemented in the test.
-func (b *MockBroker) History() []RequestResponse {
-	b.lock.Lock()
-	history := make([]RequestResponse, len(b.history))
-	copy(history, b.history)
-	b.lock.Unlock()
-	return history
-}
-
-// Port returns the TCP port number the broker is listening for requests on.
-func (b *MockBroker) Port() int32 {
-	return b.port
-}
-
-// Addr returns the broker connection string in the form "<address>:<port>".
-func (b *MockBroker) Addr() string {
-	return b.listener.Addr().String()
-}
-
-// Close terminates the broker blocking until it stops internal goroutines and
-// releases all resources.
-func (b *MockBroker) Close() {
-	close(b.expectations)
-	if len(b.expectations) > 0 {
-		buf := bytes.NewBufferString(fmt.Sprintf("mockbroker/%d: not all expectations were satisfied! Still waiting on:\n", b.BrokerID()))
-		for e := range b.expectations {
-			_, _ = buf.WriteString(spew.Sdump(e))
-		}
-		b.t.Error(buf.String())
-	}
-	close(b.closing)
-	<-b.stopper
-}
-
-// setHandler sets the specified function as the request handler. Whenever
-// a mock broker reads a request from the wire it passes the request to the
-// function and sends back whatever the handler function returns.
-func (b *MockBroker) setHandler(handler requestHandlerFunc) {
-	b.lock.Lock()
-	b.handler = handler
-	b.lock.Unlock()
-}
-
-func (b *MockBroker) serverLoop() {
-	defer close(b.stopper)
-	var err error
-	var conn net.Conn
-
-	go func() {
-		<-b.closing
-		err := b.listener.Close()
-		if err != nil {
-			b.t.Error(err)
-		}
-	}()
-
-	wg := &sync.WaitGroup{}
-	i := 0
-	for conn, err = b.listener.Accept(); err == nil; conn, err = b.listener.Accept() {
-		wg.Add(1)
-		go b.handleRequests(conn, i, wg)
-		i++
-	}
-	wg.Wait()
-	Logger.Printf("*** mockbroker/%d: listener closed, err=%v", b.BrokerID(), err)
-}
-
-func (b *MockBroker) handleRequests(conn net.Conn, idx int, wg *sync.WaitGroup) {
-	defer wg.Done()
-	defer func() {
-		_ = conn.Close()
-	}()
-	Logger.Printf("*** mockbroker/%d/%d: connection opened", b.BrokerID(), idx)
-	var err error
-
-	abort := make(chan none)
-	defer close(abort)
-	go func() {
-		select {
-		case <-b.closing:
-			_ = conn.Close()
-		case <-abort:
-		}
-	}()
-
-	resHeader := make([]byte, 8)
-	for {
-		req, bytesRead, err := decodeRequest(conn)
-		if err != nil {
-			Logger.Printf("*** mockbroker/%d/%d: invalid request: err=%+v, %+v", b.brokerID, idx, err, spew.Sdump(req))
-			b.serverError(err)
-			break
-		}
-
-		if b.latency > 0 {
-			time.Sleep(b.latency)
-		}
-
-		b.lock.Lock()
-		res := b.handler(req)
-		b.history = append(b.history, RequestResponse{req.body, res})
-		b.lock.Unlock()
-
-		if res == nil {
-			Logger.Printf("*** mockbroker/%d/%d: ignored %v", b.brokerID, idx, spew.Sdump(req))
-			continue
-		}
-		Logger.Printf("*** mockbroker/%d/%d: served %v -> %v", b.brokerID, idx, req, res)
-
-		encodedRes, err := encode(res, nil)
-		if err != nil {
-			b.serverError(err)
-			break
-		}
-		if len(encodedRes) == 0 {
-			b.lock.Lock()
-			if b.notifier != nil {
-				b.notifier(bytesRead, 0)
-			}
-			b.lock.Unlock()
-			continue
-		}
-
-		binary.BigEndian.PutUint32(resHeader, uint32(len(encodedRes)+4))
-		binary.BigEndian.PutUint32(resHeader[4:], uint32(req.correlationID))
-		if _, err = conn.Write(resHeader); err != nil {
-			b.serverError(err)
-			break
-		}
-		if _, err = conn.Write(encodedRes); err != nil {
-			b.serverError(err)
-			break
-		}
-
-		b.lock.Lock()
-		if b.notifier != nil {
-			b.notifier(bytesRead, len(resHeader)+len(encodedRes))
-		}
-		b.lock.Unlock()
-	}
-	Logger.Printf("*** mockbroker/%d/%d: connection closed, err=%v", b.BrokerID(), idx, err)
-}
-
-func (b *MockBroker) defaultRequestHandler(req *request) (res encoder) {
-	select {
-	case res, ok := <-b.expectations:
-		if !ok {
-			return nil
-		}
-		return res
-	case <-time.After(expectationTimeout):
-		return nil
-	}
-}
-
-func (b *MockBroker) serverError(err error) {
-	isConnectionClosedError := false
-	if _, ok := err.(*net.OpError); ok {
-		isConnectionClosedError = true
-	} else if err == io.EOF {
-		isConnectionClosedError = true
-	} else if err.Error() == "use of closed network connection" {
-		isConnectionClosedError = true
-	}
-
-	if isConnectionClosedError {
-		return
-	}
-
-	b.t.Errorf(err.Error())
-}
-
-// NewMockBroker launches a fake Kafka broker. It takes a TestReporter as provided by the
-// test framework and a channel of responses to use.  If an error occurs it is
-// simply logged to the TestReporter and the broker exits.
-func NewMockBroker(t TestReporter, brokerID int32) *MockBroker {
-	return NewMockBrokerAddr(t, brokerID, "localhost:0")
-}
-
-// NewMockBrokerAddr behaves like newMockBroker but listens on the address you give
-// it rather than just some ephemeral port.
-func NewMockBrokerAddr(t TestReporter, brokerID int32, addr string) *MockBroker {
-	listener, err := net.Listen("tcp", addr)
-	if err != nil {
-		t.Fatal(err)
-	}
-	return NewMockBrokerListener(t, brokerID, listener)
-}
-
-// NewMockBrokerListener behaves like newMockBrokerAddr but accepts connections on the listener specified.
-func NewMockBrokerListener(t TestReporter, brokerID int32, listener net.Listener) *MockBroker {
-	var err error
-
-	broker := &MockBroker{
-		closing:      make(chan none),
-		stopper:      make(chan none),
-		t:            t,
-		brokerID:     brokerID,
-		expectations: make(chan encoder, 512),
-		listener:     listener,
-	}
-	broker.handler = broker.defaultRequestHandler
-
-	Logger.Printf("*** mockbroker/%d listening on %s\n", brokerID, broker.listener.Addr().String())
-	_, portStr, err := net.SplitHostPort(broker.listener.Addr().String())
-	if err != nil {
-		t.Fatal(err)
-	}
-	tmp, err := strconv.ParseInt(portStr, 10, 32)
-	if err != nil {
-		t.Fatal(err)
-	}
-	broker.port = int32(tmp)
-
-	go broker.serverLoop()
-
-	return broker
-}
-
-func (b *MockBroker) Returns(e encoder) {
-	b.expectations <- e
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/mockresponses.go b/vendor/gopkg.in/Shopify/sarama.v1/mockresponses.go
deleted file mode 100644
index 348c223..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/mockresponses.go
+++ /dev/null
@@ -1,868 +0,0 @@
-package sarama
-
-import (
-	"fmt"
-)
-
-// TestReporter has methods matching go's testing.T to avoid importing
-// `testing` in the main part of the library.
-type TestReporter interface {
-	Error(...interface{})
-	Errorf(string, ...interface{})
-	Fatal(...interface{})
-	Fatalf(string, ...interface{})
-}
-
-// MockResponse is a response builder interface it defines one method that
-// allows generating a response based on a request body. MockResponses are used
-// to program behavior of MockBroker in tests.
-type MockResponse interface {
-	For(reqBody versionedDecoder) (res encoder)
-}
-
-// MockWrapper is a mock response builder that returns a particular concrete
-// response regardless of the actual request passed to the `For` method.
-type MockWrapper struct {
-	res encoder
-}
-
-func (mw *MockWrapper) For(reqBody versionedDecoder) (res encoder) {
-	return mw.res
-}
-
-func NewMockWrapper(res encoder) *MockWrapper {
-	return &MockWrapper{res: res}
-}
-
-// MockSequence is a mock response builder that is created from a sequence of
-// concrete responses. Every time when a `MockBroker` calls its `For` method
-// the next response from the sequence is returned. When the end of the
-// sequence is reached the last element from the sequence is returned.
-type MockSequence struct {
-	responses []MockResponse
-}
-
-func NewMockSequence(responses ...interface{}) *MockSequence {
-	ms := &MockSequence{}
-	ms.responses = make([]MockResponse, len(responses))
-	for i, res := range responses {
-		switch res := res.(type) {
-		case MockResponse:
-			ms.responses[i] = res
-		case encoder:
-			ms.responses[i] = NewMockWrapper(res)
-		default:
-			panic(fmt.Sprintf("Unexpected response type: %T", res))
-		}
-	}
-	return ms
-}
-
-func (mc *MockSequence) For(reqBody versionedDecoder) (res encoder) {
-	res = mc.responses[0].For(reqBody)
-	if len(mc.responses) > 1 {
-		mc.responses = mc.responses[1:]
-	}
-	return res
-}
-
-type MockListGroupsResponse struct {
-	groups map[string]string
-	t      TestReporter
-}
-
-func NewMockListGroupsResponse(t TestReporter) *MockListGroupsResponse {
-	return &MockListGroupsResponse{
-		groups: make(map[string]string),
-		t:      t,
-	}
-}
-
-func (m *MockListGroupsResponse) For(reqBody versionedDecoder) encoder {
-	request := reqBody.(*ListGroupsRequest)
-	_ = request
-	response := &ListGroupsResponse{
-		Groups: m.groups,
-	}
-	return response
-}
-
-func (m *MockListGroupsResponse) AddGroup(groupID, protocolType string) *MockListGroupsResponse {
-	m.groups[groupID] = protocolType
-	return m
-}
-
-type MockDescribeGroupsResponse struct {
-	groups map[string]*GroupDescription
-	t      TestReporter
-}
-
-func NewMockDescribeGroupsResponse(t TestReporter) *MockDescribeGroupsResponse {
-	return &MockDescribeGroupsResponse{
-		t:      t,
-		groups: make(map[string]*GroupDescription),
-	}
-}
-
-func (m *MockDescribeGroupsResponse) AddGroupDescription(groupID string, description *GroupDescription) *MockDescribeGroupsResponse {
-	m.groups[groupID] = description
-	return m
-}
-
-func (m *MockDescribeGroupsResponse) For(reqBody versionedDecoder) encoder {
-	request := reqBody.(*DescribeGroupsRequest)
-
-	response := &DescribeGroupsResponse{}
-	for _, requestedGroup := range request.Groups {
-		if group, ok := m.groups[requestedGroup]; ok {
-			response.Groups = append(response.Groups, group)
-		} else {
-			// Mimic real kafka - if a group doesn't exist, return
-			// an entry with state "Dead"
-			response.Groups = append(response.Groups, &GroupDescription{
-				GroupId: requestedGroup,
-				State:   "Dead",
-			})
-		}
-	}
-
-	return response
-}
-
-// MockMetadataResponse is a `MetadataResponse` builder.
-type MockMetadataResponse struct {
-	controllerID int32
-	leaders      map[string]map[int32]int32
-	brokers      map[string]int32
-	t            TestReporter
-}
-
-func NewMockMetadataResponse(t TestReporter) *MockMetadataResponse {
-	return &MockMetadataResponse{
-		leaders: make(map[string]map[int32]int32),
-		brokers: make(map[string]int32),
-		t:       t,
-	}
-}
-
-func (mmr *MockMetadataResponse) SetLeader(topic string, partition, brokerID int32) *MockMetadataResponse {
-	partitions := mmr.leaders[topic]
-	if partitions == nil {
-		partitions = make(map[int32]int32)
-		mmr.leaders[topic] = partitions
-	}
-	partitions[partition] = brokerID
-	return mmr
-}
-
-func (mmr *MockMetadataResponse) SetBroker(addr string, brokerID int32) *MockMetadataResponse {
-	mmr.brokers[addr] = brokerID
-	return mmr
-}
-
-func (mmr *MockMetadataResponse) SetController(brokerID int32) *MockMetadataResponse {
-	mmr.controllerID = brokerID
-	return mmr
-}
-
-func (mmr *MockMetadataResponse) For(reqBody versionedDecoder) encoder {
-	metadataRequest := reqBody.(*MetadataRequest)
-	metadataResponse := &MetadataResponse{
-		Version:      metadataRequest.version(),
-		ControllerID: mmr.controllerID,
-	}
-	for addr, brokerID := range mmr.brokers {
-		metadataResponse.AddBroker(addr, brokerID)
-	}
-
-	// Generate set of replicas
-	replicas := []int32{}
-
-	for _, brokerID := range mmr.brokers {
-		replicas = append(replicas, brokerID)
-	}
-
-	if len(metadataRequest.Topics) == 0 {
-		for topic, partitions := range mmr.leaders {
-			for partition, brokerID := range partitions {
-				metadataResponse.AddTopicPartition(topic, partition, brokerID, replicas, replicas, ErrNoError)
-			}
-		}
-		return metadataResponse
-	}
-	for _, topic := range metadataRequest.Topics {
-		for partition, brokerID := range mmr.leaders[topic] {
-			metadataResponse.AddTopicPartition(topic, partition, brokerID, replicas, replicas, ErrNoError)
-		}
-	}
-	return metadataResponse
-}
-
-// MockOffsetResponse is an `OffsetResponse` builder.
-type MockOffsetResponse struct {
-	offsets map[string]map[int32]map[int64]int64
-	t       TestReporter
-	version int16
-}
-
-func NewMockOffsetResponse(t TestReporter) *MockOffsetResponse {
-	return &MockOffsetResponse{
-		offsets: make(map[string]map[int32]map[int64]int64),
-		t:       t,
-	}
-}
-
-func (mor *MockOffsetResponse) SetVersion(version int16) *MockOffsetResponse {
-	mor.version = version
-	return mor
-}
-
-func (mor *MockOffsetResponse) SetOffset(topic string, partition int32, time, offset int64) *MockOffsetResponse {
-	partitions := mor.offsets[topic]
-	if partitions == nil {
-		partitions = make(map[int32]map[int64]int64)
-		mor.offsets[topic] = partitions
-	}
-	times := partitions[partition]
-	if times == nil {
-		times = make(map[int64]int64)
-		partitions[partition] = times
-	}
-	times[time] = offset
-	return mor
-}
-
-func (mor *MockOffsetResponse) For(reqBody versionedDecoder) encoder {
-	offsetRequest := reqBody.(*OffsetRequest)
-	offsetResponse := &OffsetResponse{Version: mor.version}
-	for topic, partitions := range offsetRequest.blocks {
-		for partition, block := range partitions {
-			offset := mor.getOffset(topic, partition, block.time)
-			offsetResponse.AddTopicPartition(topic, partition, offset)
-		}
-	}
-	return offsetResponse
-}
-
-func (mor *MockOffsetResponse) getOffset(topic string, partition int32, time int64) int64 {
-	partitions := mor.offsets[topic]
-	if partitions == nil {
-		mor.t.Errorf("missing topic: %s", topic)
-	}
-	times := partitions[partition]
-	if times == nil {
-		mor.t.Errorf("missing partition: %d", partition)
-	}
-	offset, ok := times[time]
-	if !ok {
-		mor.t.Errorf("missing time: %d", time)
-	}
-	return offset
-}
-
-// MockFetchResponse is a `FetchResponse` builder.
-type MockFetchResponse struct {
-	messages       map[string]map[int32]map[int64]Encoder
-	highWaterMarks map[string]map[int32]int64
-	t              TestReporter
-	batchSize      int
-	version        int16
-}
-
-func NewMockFetchResponse(t TestReporter, batchSize int) *MockFetchResponse {
-	return &MockFetchResponse{
-		messages:       make(map[string]map[int32]map[int64]Encoder),
-		highWaterMarks: make(map[string]map[int32]int64),
-		t:              t,
-		batchSize:      batchSize,
-	}
-}
-
-func (mfr *MockFetchResponse) SetVersion(version int16) *MockFetchResponse {
-	mfr.version = version
-	return mfr
-}
-
-func (mfr *MockFetchResponse) SetMessage(topic string, partition int32, offset int64, msg Encoder) *MockFetchResponse {
-	partitions := mfr.messages[topic]
-	if partitions == nil {
-		partitions = make(map[int32]map[int64]Encoder)
-		mfr.messages[topic] = partitions
-	}
-	messages := partitions[partition]
-	if messages == nil {
-		messages = make(map[int64]Encoder)
-		partitions[partition] = messages
-	}
-	messages[offset] = msg
-	return mfr
-}
-
-func (mfr *MockFetchResponse) SetHighWaterMark(topic string, partition int32, offset int64) *MockFetchResponse {
-	partitions := mfr.highWaterMarks[topic]
-	if partitions == nil {
-		partitions = make(map[int32]int64)
-		mfr.highWaterMarks[topic] = partitions
-	}
-	partitions[partition] = offset
-	return mfr
-}
-
-func (mfr *MockFetchResponse) For(reqBody versionedDecoder) encoder {
-	fetchRequest := reqBody.(*FetchRequest)
-	res := &FetchResponse{
-		Version: mfr.version,
-	}
-	for topic, partitions := range fetchRequest.blocks {
-		for partition, block := range partitions {
-			initialOffset := block.fetchOffset
-			offset := initialOffset
-			maxOffset := initialOffset + int64(mfr.getMessageCount(topic, partition))
-			for i := 0; i < mfr.batchSize && offset < maxOffset; {
-				msg := mfr.getMessage(topic, partition, offset)
-				if msg != nil {
-					res.AddMessage(topic, partition, nil, msg, offset)
-					i++
-				}
-				offset++
-			}
-			fb := res.GetBlock(topic, partition)
-			if fb == nil {
-				res.AddError(topic, partition, ErrNoError)
-				fb = res.GetBlock(topic, partition)
-			}
-			fb.HighWaterMarkOffset = mfr.getHighWaterMark(topic, partition)
-		}
-	}
-	return res
-}
-
-func (mfr *MockFetchResponse) getMessage(topic string, partition int32, offset int64) Encoder {
-	partitions := mfr.messages[topic]
-	if partitions == nil {
-		return nil
-	}
-	messages := partitions[partition]
-	if messages == nil {
-		return nil
-	}
-	return messages[offset]
-}
-
-func (mfr *MockFetchResponse) getMessageCount(topic string, partition int32) int {
-	partitions := mfr.messages[topic]
-	if partitions == nil {
-		return 0
-	}
-	messages := partitions[partition]
-	if messages == nil {
-		return 0
-	}
-	return len(messages)
-}
-
-func (mfr *MockFetchResponse) getHighWaterMark(topic string, partition int32) int64 {
-	partitions := mfr.highWaterMarks[topic]
-	if partitions == nil {
-		return 0
-	}
-	return partitions[partition]
-}
-
-// MockConsumerMetadataResponse is a `ConsumerMetadataResponse` builder.
-type MockConsumerMetadataResponse struct {
-	coordinators map[string]interface{}
-	t            TestReporter
-}
-
-func NewMockConsumerMetadataResponse(t TestReporter) *MockConsumerMetadataResponse {
-	return &MockConsumerMetadataResponse{
-		coordinators: make(map[string]interface{}),
-		t:            t,
-	}
-}
-
-func (mr *MockConsumerMetadataResponse) SetCoordinator(group string, broker *MockBroker) *MockConsumerMetadataResponse {
-	mr.coordinators[group] = broker
-	return mr
-}
-
-func (mr *MockConsumerMetadataResponse) SetError(group string, kerror KError) *MockConsumerMetadataResponse {
-	mr.coordinators[group] = kerror
-	return mr
-}
-
-func (mr *MockConsumerMetadataResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*ConsumerMetadataRequest)
-	group := req.ConsumerGroup
-	res := &ConsumerMetadataResponse{}
-	v := mr.coordinators[group]
-	switch v := v.(type) {
-	case *MockBroker:
-		res.Coordinator = &Broker{id: v.BrokerID(), addr: v.Addr()}
-	case KError:
-		res.Err = v
-	}
-	return res
-}
-
-// MockFindCoordinatorResponse is a `FindCoordinatorResponse` builder.
-type MockFindCoordinatorResponse struct {
-	groupCoordinators map[string]interface{}
-	transCoordinators map[string]interface{}
-	t                 TestReporter
-}
-
-func NewMockFindCoordinatorResponse(t TestReporter) *MockFindCoordinatorResponse {
-	return &MockFindCoordinatorResponse{
-		groupCoordinators: make(map[string]interface{}),
-		transCoordinators: make(map[string]interface{}),
-		t:                 t,
-	}
-}
-
-func (mr *MockFindCoordinatorResponse) SetCoordinator(coordinatorType CoordinatorType, group string, broker *MockBroker) *MockFindCoordinatorResponse {
-	switch coordinatorType {
-	case CoordinatorGroup:
-		mr.groupCoordinators[group] = broker
-	case CoordinatorTransaction:
-		mr.transCoordinators[group] = broker
-	}
-	return mr
-}
-
-func (mr *MockFindCoordinatorResponse) SetError(coordinatorType CoordinatorType, group string, kerror KError) *MockFindCoordinatorResponse {
-	switch coordinatorType {
-	case CoordinatorGroup:
-		mr.groupCoordinators[group] = kerror
-	case CoordinatorTransaction:
-		mr.transCoordinators[group] = kerror
-	}
-	return mr
-}
-
-func (mr *MockFindCoordinatorResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*FindCoordinatorRequest)
-	res := &FindCoordinatorResponse{}
-	var v interface{}
-	switch req.CoordinatorType {
-	case CoordinatorGroup:
-		v = mr.groupCoordinators[req.CoordinatorKey]
-	case CoordinatorTransaction:
-		v = mr.transCoordinators[req.CoordinatorKey]
-	}
-	switch v := v.(type) {
-	case *MockBroker:
-		res.Coordinator = &Broker{id: v.BrokerID(), addr: v.Addr()}
-	case KError:
-		res.Err = v
-	}
-	return res
-}
-
-// MockOffsetCommitResponse is a `OffsetCommitResponse` builder.
-type MockOffsetCommitResponse struct {
-	errors map[string]map[string]map[int32]KError
-	t      TestReporter
-}
-
-func NewMockOffsetCommitResponse(t TestReporter) *MockOffsetCommitResponse {
-	return &MockOffsetCommitResponse{t: t}
-}
-
-func (mr *MockOffsetCommitResponse) SetError(group, topic string, partition int32, kerror KError) *MockOffsetCommitResponse {
-	if mr.errors == nil {
-		mr.errors = make(map[string]map[string]map[int32]KError)
-	}
-	topics := mr.errors[group]
-	if topics == nil {
-		topics = make(map[string]map[int32]KError)
-		mr.errors[group] = topics
-	}
-	partitions := topics[topic]
-	if partitions == nil {
-		partitions = make(map[int32]KError)
-		topics[topic] = partitions
-	}
-	partitions[partition] = kerror
-	return mr
-}
-
-func (mr *MockOffsetCommitResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*OffsetCommitRequest)
-	group := req.ConsumerGroup
-	res := &OffsetCommitResponse{}
-	for topic, partitions := range req.blocks {
-		for partition := range partitions {
-			res.AddError(topic, partition, mr.getError(group, topic, partition))
-		}
-	}
-	return res
-}
-
-func (mr *MockOffsetCommitResponse) getError(group, topic string, partition int32) KError {
-	topics := mr.errors[group]
-	if topics == nil {
-		return ErrNoError
-	}
-	partitions := topics[topic]
-	if partitions == nil {
-		return ErrNoError
-	}
-	kerror, ok := partitions[partition]
-	if !ok {
-		return ErrNoError
-	}
-	return kerror
-}
-
-// MockProduceResponse is a `ProduceResponse` builder.
-type MockProduceResponse struct {
-	version int16
-	errors  map[string]map[int32]KError
-	t       TestReporter
-}
-
-func NewMockProduceResponse(t TestReporter) *MockProduceResponse {
-	return &MockProduceResponse{t: t}
-}
-
-func (mr *MockProduceResponse) SetVersion(version int16) *MockProduceResponse {
-	mr.version = version
-	return mr
-}
-
-func (mr *MockProduceResponse) SetError(topic string, partition int32, kerror KError) *MockProduceResponse {
-	if mr.errors == nil {
-		mr.errors = make(map[string]map[int32]KError)
-	}
-	partitions := mr.errors[topic]
-	if partitions == nil {
-		partitions = make(map[int32]KError)
-		mr.errors[topic] = partitions
-	}
-	partitions[partition] = kerror
-	return mr
-}
-
-func (mr *MockProduceResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*ProduceRequest)
-	res := &ProduceResponse{
-		Version: mr.version,
-	}
-	for topic, partitions := range req.records {
-		for partition := range partitions {
-			res.AddTopicPartition(topic, partition, mr.getError(topic, partition))
-		}
-	}
-	return res
-}
-
-func (mr *MockProduceResponse) getError(topic string, partition int32) KError {
-	partitions := mr.errors[topic]
-	if partitions == nil {
-		return ErrNoError
-	}
-	kerror, ok := partitions[partition]
-	if !ok {
-		return ErrNoError
-	}
-	return kerror
-}
-
-// MockOffsetFetchResponse is a `OffsetFetchResponse` builder.
-type MockOffsetFetchResponse struct {
-	offsets map[string]map[string]map[int32]*OffsetFetchResponseBlock
-	t       TestReporter
-}
-
-func NewMockOffsetFetchResponse(t TestReporter) *MockOffsetFetchResponse {
-	return &MockOffsetFetchResponse{t: t}
-}
-
-func (mr *MockOffsetFetchResponse) SetOffset(group, topic string, partition int32, offset int64, metadata string, kerror KError) *MockOffsetFetchResponse {
-	if mr.offsets == nil {
-		mr.offsets = make(map[string]map[string]map[int32]*OffsetFetchResponseBlock)
-	}
-	topics := mr.offsets[group]
-	if topics == nil {
-		topics = make(map[string]map[int32]*OffsetFetchResponseBlock)
-		mr.offsets[group] = topics
-	}
-	partitions := topics[topic]
-	if partitions == nil {
-		partitions = make(map[int32]*OffsetFetchResponseBlock)
-		topics[topic] = partitions
-	}
-	partitions[partition] = &OffsetFetchResponseBlock{offset, 0, metadata, kerror}
-	return mr
-}
-
-func (mr *MockOffsetFetchResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*OffsetFetchRequest)
-	group := req.ConsumerGroup
-	res := &OffsetFetchResponse{}
-	for topic, partitions := range mr.offsets[group] {
-		for partition, block := range partitions {
-			res.AddBlock(topic, partition, block)
-		}
-	}
-	return res
-}
-
-type MockCreateTopicsResponse struct {
-	t TestReporter
-}
-
-func NewMockCreateTopicsResponse(t TestReporter) *MockCreateTopicsResponse {
-	return &MockCreateTopicsResponse{t: t}
-}
-
-func (mr *MockCreateTopicsResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*CreateTopicsRequest)
-	res := &CreateTopicsResponse{}
-	res.TopicErrors = make(map[string]*TopicError)
-
-	for topic, _ := range req.TopicDetails {
-		res.TopicErrors[topic] = &TopicError{Err: ErrNoError}
-	}
-	return res
-}
-
-type MockDeleteTopicsResponse struct {
-	t TestReporter
-}
-
-func NewMockDeleteTopicsResponse(t TestReporter) *MockDeleteTopicsResponse {
-	return &MockDeleteTopicsResponse{t: t}
-}
-
-func (mr *MockDeleteTopicsResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*DeleteTopicsRequest)
-	res := &DeleteTopicsResponse{}
-	res.TopicErrorCodes = make(map[string]KError)
-
-	for _, topic := range req.Topics {
-		res.TopicErrorCodes[topic] = ErrNoError
-	}
-	return res
-}
-
-type MockCreatePartitionsResponse struct {
-	t TestReporter
-}
-
-func NewMockCreatePartitionsResponse(t TestReporter) *MockCreatePartitionsResponse {
-	return &MockCreatePartitionsResponse{t: t}
-}
-
-func (mr *MockCreatePartitionsResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*CreatePartitionsRequest)
-	res := &CreatePartitionsResponse{}
-	res.TopicPartitionErrors = make(map[string]*TopicPartitionError)
-
-	for topic, _ := range req.TopicPartitions {
-		res.TopicPartitionErrors[topic] = &TopicPartitionError{Err: ErrNoError}
-	}
-	return res
-}
-
-type MockDeleteRecordsResponse struct {
-	t TestReporter
-}
-
-func NewMockDeleteRecordsResponse(t TestReporter) *MockDeleteRecordsResponse {
-	return &MockDeleteRecordsResponse{t: t}
-}
-
-func (mr *MockDeleteRecordsResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*DeleteRecordsRequest)
-	res := &DeleteRecordsResponse{}
-	res.Topics = make(map[string]*DeleteRecordsResponseTopic)
-
-	for topic, deleteRecordRequestTopic := range req.Topics {
-		partitions := make(map[int32]*DeleteRecordsResponsePartition)
-		for partition, _ := range deleteRecordRequestTopic.PartitionOffsets {
-			partitions[partition] = &DeleteRecordsResponsePartition{Err: ErrNoError}
-		}
-		res.Topics[topic] = &DeleteRecordsResponseTopic{Partitions: partitions}
-	}
-	return res
-}
-
-type MockDescribeConfigsResponse struct {
-	t TestReporter
-}
-
-func NewMockDescribeConfigsResponse(t TestReporter) *MockDescribeConfigsResponse {
-	return &MockDescribeConfigsResponse{t: t}
-}
-
-func (mr *MockDescribeConfigsResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*DescribeConfigsRequest)
-	res := &DescribeConfigsResponse{}
-
-	for _, r := range req.Resources {
-		var configEntries []*ConfigEntry
-		switch r.Type {
-		case TopicResource:
-			configEntries = append(configEntries,
-				&ConfigEntry{Name: "max.message.bytes",
-					Value:     "1000000",
-					ReadOnly:  false,
-					Default:   true,
-					Sensitive: false,
-				}, &ConfigEntry{Name: "retention.ms",
-					Value:     "5000",
-					ReadOnly:  false,
-					Default:   false,
-					Sensitive: false,
-				}, &ConfigEntry{Name: "password",
-					Value:     "12345",
-					ReadOnly:  false,
-					Default:   false,
-					Sensitive: true,
-				})
-			res.Resources = append(res.Resources, &ResourceResponse{
-				Name:    r.Name,
-				Configs: configEntries,
-			})
-		}
-	}
-	return res
-}
-
-type MockAlterConfigsResponse struct {
-	t TestReporter
-}
-
-func NewMockAlterConfigsResponse(t TestReporter) *MockAlterConfigsResponse {
-	return &MockAlterConfigsResponse{t: t}
-}
-
-func (mr *MockAlterConfigsResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*AlterConfigsRequest)
-	res := &AlterConfigsResponse{}
-
-	for _, r := range req.Resources {
-		res.Resources = append(res.Resources, &AlterConfigsResourceResponse{Name: r.Name,
-			Type:     TopicResource,
-			ErrorMsg: "",
-		})
-	}
-	return res
-}
-
-type MockCreateAclsResponse struct {
-	t TestReporter
-}
-
-func NewMockCreateAclsResponse(t TestReporter) *MockCreateAclsResponse {
-	return &MockCreateAclsResponse{t: t}
-}
-
-func (mr *MockCreateAclsResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*CreateAclsRequest)
-	res := &CreateAclsResponse{}
-
-	for range req.AclCreations {
-		res.AclCreationResponses = append(res.AclCreationResponses, &AclCreationResponse{Err: ErrNoError})
-	}
-	return res
-}
-
-type MockListAclsResponse struct {
-	t TestReporter
-}
-
-func NewMockListAclsResponse(t TestReporter) *MockListAclsResponse {
-	return &MockListAclsResponse{t: t}
-}
-
-func (mr *MockListAclsResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*DescribeAclsRequest)
-	res := &DescribeAclsResponse{}
-
-	res.Err = ErrNoError
-	acl := &ResourceAcls{}
-	acl.Resource.ResourceName = *req.ResourceName
-	acl.Resource.ResourceType = req.ResourceType
-	acl.Acls = append(acl.Acls, &Acl{})
-	res.ResourceAcls = append(res.ResourceAcls, acl)
-
-	return res
-}
-
-type MockSaslAuthenticateResponse struct {
-	t             TestReporter
-	kerror        KError
-	saslAuthBytes []byte
-}
-
-func NewMockSaslAuthenticateResponse(t TestReporter) *MockSaslAuthenticateResponse {
-	return &MockSaslAuthenticateResponse{t: t}
-}
-
-func (msar *MockSaslAuthenticateResponse) For(reqBody versionedDecoder) encoder {
-	res := &SaslAuthenticateResponse{}
-	res.Err = msar.kerror
-	res.SaslAuthBytes = msar.saslAuthBytes
-	return res
-}
-
-func (msar *MockSaslAuthenticateResponse) SetError(kerror KError) *MockSaslAuthenticateResponse {
-	msar.kerror = kerror
-	return msar
-}
-
-func (msar *MockSaslAuthenticateResponse) SetAuthBytes(saslAuthBytes []byte) *MockSaslAuthenticateResponse {
-	msar.saslAuthBytes = saslAuthBytes
-	return msar
-}
-
-type MockDeleteAclsResponse struct {
-	t TestReporter
-}
-
-type MockSaslHandshakeResponse struct {
-	enabledMechanisms []string
-	kerror            KError
-	t                 TestReporter
-}
-
-func NewMockSaslHandshakeResponse(t TestReporter) *MockSaslHandshakeResponse {
-	return &MockSaslHandshakeResponse{t: t}
-}
-
-func (mshr *MockSaslHandshakeResponse) For(reqBody versionedDecoder) encoder {
-	res := &SaslHandshakeResponse{}
-	res.Err = mshr.kerror
-	res.EnabledMechanisms = mshr.enabledMechanisms
-	return res
-}
-
-func (mshr *MockSaslHandshakeResponse) SetError(kerror KError) *MockSaslHandshakeResponse {
-	mshr.kerror = kerror
-	return mshr
-}
-
-func (mshr *MockSaslHandshakeResponse) SetEnabledMechanisms(enabledMechanisms []string) *MockSaslHandshakeResponse {
-	mshr.enabledMechanisms = enabledMechanisms
-	return mshr
-}
-
-func NewMockDeleteAclsResponse(t TestReporter) *MockDeleteAclsResponse {
-	return &MockDeleteAclsResponse{t: t}
-}
-
-func (mr *MockDeleteAclsResponse) For(reqBody versionedDecoder) encoder {
-	req := reqBody.(*DeleteAclsRequest)
-	res := &DeleteAclsResponse{}
-
-	for range req.Filters {
-		response := &FilterResponse{Err: ErrNoError}
-		response.MatchingAcls = append(response.MatchingAcls, &MatchingAcl{Err: ErrNoError})
-		res.FilterResponses = append(res.FilterResponses, response)
-	}
-	return res
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/offset_commit_request.go b/vendor/gopkg.in/Shopify/sarama.v1/offset_commit_request.go
deleted file mode 100644
index 1ec583e..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/offset_commit_request.go
+++ /dev/null
@@ -1,210 +0,0 @@
-package sarama
-
-import "errors"
-
-// ReceiveTime is a special value for the timestamp field of Offset Commit Requests which
-// tells the broker to set the timestamp to the time at which the request was received.
-// The timestamp is only used if message version 1 is used, which requires kafka 0.8.2.
-const ReceiveTime int64 = -1
-
-// GroupGenerationUndefined is a special value for the group generation field of
-// Offset Commit Requests that should be used when a consumer group does not rely
-// on Kafka for partition management.
-const GroupGenerationUndefined = -1
-
-type offsetCommitRequestBlock struct {
-	offset    int64
-	timestamp int64
-	metadata  string
-}
-
-func (b *offsetCommitRequestBlock) encode(pe packetEncoder, version int16) error {
-	pe.putInt64(b.offset)
-	if version == 1 {
-		pe.putInt64(b.timestamp)
-	} else if b.timestamp != 0 {
-		Logger.Println("Non-zero timestamp specified for OffsetCommitRequest not v1, it will be ignored")
-	}
-
-	return pe.putString(b.metadata)
-}
-
-func (b *offsetCommitRequestBlock) decode(pd packetDecoder, version int16) (err error) {
-	if b.offset, err = pd.getInt64(); err != nil {
-		return err
-	}
-	if version == 1 {
-		if b.timestamp, err = pd.getInt64(); err != nil {
-			return err
-		}
-	}
-	b.metadata, err = pd.getString()
-	return err
-}
-
-type OffsetCommitRequest struct {
-	ConsumerGroup           string
-	ConsumerGroupGeneration int32  // v1 or later
-	ConsumerID              string // v1 or later
-	RetentionTime           int64  // v2 or later
-
-	// Version can be:
-	// - 0 (kafka 0.8.1 and later)
-	// - 1 (kafka 0.8.2 and later)
-	// - 2 (kafka 0.9.0 and later)
-	// - 3 (kafka 0.11.0 and later)
-	// - 4 (kafka 2.0.0 and later)
-	Version int16
-	blocks  map[string]map[int32]*offsetCommitRequestBlock
-}
-
-func (r *OffsetCommitRequest) encode(pe packetEncoder) error {
-	if r.Version < 0 || r.Version > 4 {
-		return PacketEncodingError{"invalid or unsupported OffsetCommitRequest version field"}
-	}
-
-	if err := pe.putString(r.ConsumerGroup); err != nil {
-		return err
-	}
-
-	if r.Version >= 1 {
-		pe.putInt32(r.ConsumerGroupGeneration)
-		if err := pe.putString(r.ConsumerID); err != nil {
-			return err
-		}
-	} else {
-		if r.ConsumerGroupGeneration != 0 {
-			Logger.Println("Non-zero ConsumerGroupGeneration specified for OffsetCommitRequest v0, it will be ignored")
-		}
-		if r.ConsumerID != "" {
-			Logger.Println("Non-empty ConsumerID specified for OffsetCommitRequest v0, it will be ignored")
-		}
-	}
-
-	if r.Version >= 2 {
-		pe.putInt64(r.RetentionTime)
-	} else if r.RetentionTime != 0 {
-		Logger.Println("Non-zero RetentionTime specified for OffsetCommitRequest version <2, it will be ignored")
-	}
-
-	if err := pe.putArrayLength(len(r.blocks)); err != nil {
-		return err
-	}
-	for topic, partitions := range r.blocks {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := pe.putArrayLength(len(partitions)); err != nil {
-			return err
-		}
-		for partition, block := range partitions {
-			pe.putInt32(partition)
-			if err := block.encode(pe, r.Version); err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func (r *OffsetCommitRequest) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-
-	if r.ConsumerGroup, err = pd.getString(); err != nil {
-		return err
-	}
-
-	if r.Version >= 1 {
-		if r.ConsumerGroupGeneration, err = pd.getInt32(); err != nil {
-			return err
-		}
-		if r.ConsumerID, err = pd.getString(); err != nil {
-			return err
-		}
-	}
-
-	if r.Version >= 2 {
-		if r.RetentionTime, err = pd.getInt64(); err != nil {
-			return err
-		}
-	}
-
-	topicCount, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if topicCount == 0 {
-		return nil
-	}
-	r.blocks = make(map[string]map[int32]*offsetCommitRequestBlock)
-	for i := 0; i < topicCount; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		partitionCount, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-		r.blocks[topic] = make(map[int32]*offsetCommitRequestBlock)
-		for j := 0; j < partitionCount; j++ {
-			partition, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-			block := &offsetCommitRequestBlock{}
-			if err := block.decode(pd, r.Version); err != nil {
-				return err
-			}
-			r.blocks[topic][partition] = block
-		}
-	}
-	return nil
-}
-
-func (r *OffsetCommitRequest) key() int16 {
-	return 8
-}
-
-func (r *OffsetCommitRequest) version() int16 {
-	return r.Version
-}
-
-func (r *OffsetCommitRequest) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_8_2_0
-	case 2:
-		return V0_9_0_0
-	case 3:
-		return V0_11_0_0
-	case 4:
-		return V2_0_0_0
-	default:
-		return MinVersion
-	}
-}
-
-func (r *OffsetCommitRequest) AddBlock(topic string, partitionID int32, offset int64, timestamp int64, metadata string) {
-	if r.blocks == nil {
-		r.blocks = make(map[string]map[int32]*offsetCommitRequestBlock)
-	}
-
-	if r.blocks[topic] == nil {
-		r.blocks[topic] = make(map[int32]*offsetCommitRequestBlock)
-	}
-
-	r.blocks[topic][partitionID] = &offsetCommitRequestBlock{offset, timestamp, metadata}
-}
-
-func (r *OffsetCommitRequest) Offset(topic string, partitionID int32) (int64, string, error) {
-	partitions := r.blocks[topic]
-	if partitions == nil {
-		return 0, "", errors.New("No such offset")
-	}
-	block := partitions[partitionID]
-	if block == nil {
-		return 0, "", errors.New("No such offset")
-	}
-	return block.offset, block.metadata, nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/offset_commit_response.go b/vendor/gopkg.in/Shopify/sarama.v1/offset_commit_response.go
deleted file mode 100644
index e842298..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/offset_commit_response.go
+++ /dev/null
@@ -1,110 +0,0 @@
-package sarama
-
-type OffsetCommitResponse struct {
-	Version        int16
-	ThrottleTimeMs int32
-	Errors         map[string]map[int32]KError
-}
-
-func (r *OffsetCommitResponse) AddError(topic string, partition int32, kerror KError) {
-	if r.Errors == nil {
-		r.Errors = make(map[string]map[int32]KError)
-	}
-	partitions := r.Errors[topic]
-	if partitions == nil {
-		partitions = make(map[int32]KError)
-		r.Errors[topic] = partitions
-	}
-	partitions[partition] = kerror
-}
-
-func (r *OffsetCommitResponse) encode(pe packetEncoder) error {
-	if r.Version >= 3 {
-		pe.putInt32(r.ThrottleTimeMs)
-	}
-	if err := pe.putArrayLength(len(r.Errors)); err != nil {
-		return err
-	}
-	for topic, partitions := range r.Errors {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := pe.putArrayLength(len(partitions)); err != nil {
-			return err
-		}
-		for partition, kerror := range partitions {
-			pe.putInt32(partition)
-			pe.putInt16(int16(kerror))
-		}
-	}
-	return nil
-}
-
-func (r *OffsetCommitResponse) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-
-	if version >= 3 {
-		r.ThrottleTimeMs, err = pd.getInt32()
-		if err != nil {
-			return err
-		}
-	}
-
-	numTopics, err := pd.getArrayLength()
-	if err != nil || numTopics == 0 {
-		return err
-	}
-
-	r.Errors = make(map[string]map[int32]KError, numTopics)
-	for i := 0; i < numTopics; i++ {
-		name, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		numErrors, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-
-		r.Errors[name] = make(map[int32]KError, numErrors)
-
-		for j := 0; j < numErrors; j++ {
-			id, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-
-			tmp, err := pd.getInt16()
-			if err != nil {
-				return err
-			}
-			r.Errors[name][id] = KError(tmp)
-		}
-	}
-
-	return nil
-}
-
-func (r *OffsetCommitResponse) key() int16 {
-	return 8
-}
-
-func (r *OffsetCommitResponse) version() int16 {
-	return r.Version
-}
-
-func (r *OffsetCommitResponse) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_8_2_0
-	case 2:
-		return V0_9_0_0
-	case 3:
-		return V0_11_0_0
-	case 4:
-		return V2_0_0_0
-	default:
-		return MinVersion
-	}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/offset_fetch_request.go b/vendor/gopkg.in/Shopify/sarama.v1/offset_fetch_request.go
deleted file mode 100644
index 6860824..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/offset_fetch_request.go
+++ /dev/null
@@ -1,100 +0,0 @@
-package sarama
-
-type OffsetFetchRequest struct {
-	Version       int16
-	ConsumerGroup string
-	partitions    map[string][]int32
-}
-
-func (r *OffsetFetchRequest) encode(pe packetEncoder) (err error) {
-	if r.Version < 0 || r.Version > 5 {
-		return PacketEncodingError{"invalid or unsupported OffsetFetchRequest version field"}
-	}
-
-	if err = pe.putString(r.ConsumerGroup); err != nil {
-		return err
-	}
-
-	if r.Version >= 2 && r.partitions == nil {
-		pe.putInt32(-1)
-	} else {
-		if err = pe.putArrayLength(len(r.partitions)); err != nil {
-			return err
-		}
-		for topic, partitions := range r.partitions {
-			if err = pe.putString(topic); err != nil {
-				return err
-			}
-			if err = pe.putInt32Array(partitions); err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func (r *OffsetFetchRequest) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-	if r.ConsumerGroup, err = pd.getString(); err != nil {
-		return err
-	}
-	partitionCount, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if (partitionCount == 0 && version < 2) || partitionCount < 0 {
-		return nil
-	}
-	r.partitions = make(map[string][]int32)
-	for i := 0; i < partitionCount; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		partitions, err := pd.getInt32Array()
-		if err != nil {
-			return err
-		}
-		r.partitions[topic] = partitions
-	}
-	return nil
-}
-
-func (r *OffsetFetchRequest) key() int16 {
-	return 9
-}
-
-func (r *OffsetFetchRequest) version() int16 {
-	return r.Version
-}
-
-func (r *OffsetFetchRequest) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_8_2_0
-	case 2:
-		return V0_10_2_0
-	case 3:
-		return V0_11_0_0
-	case 4:
-		return V2_0_0_0
-	case 5:
-		return V2_1_0_0
-	default:
-		return MinVersion
-	}
-}
-
-func (r *OffsetFetchRequest) ZeroPartitions() {
-	if r.partitions == nil && r.Version >= 2 {
-		r.partitions = make(map[string][]int32)
-	}
-}
-
-func (r *OffsetFetchRequest) AddPartition(topic string, partitionID int32) {
-	if r.partitions == nil {
-		r.partitions = make(map[string][]int32)
-	}
-
-	r.partitions[topic] = append(r.partitions[topic], partitionID)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/offset_fetch_response.go b/vendor/gopkg.in/Shopify/sarama.v1/offset_fetch_response.go
deleted file mode 100644
index 9e25702..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/offset_fetch_response.go
+++ /dev/null
@@ -1,197 +0,0 @@
-package sarama
-
-type OffsetFetchResponseBlock struct {
-	Offset      int64
-	LeaderEpoch int32
-	Metadata    string
-	Err         KError
-}
-
-func (b *OffsetFetchResponseBlock) decode(pd packetDecoder, version int16) (err error) {
-	b.Offset, err = pd.getInt64()
-	if err != nil {
-		return err
-	}
-
-	if version >= 5 {
-		b.LeaderEpoch, err = pd.getInt32()
-		if err != nil {
-			return err
-		}
-	}
-
-	b.Metadata, err = pd.getString()
-	if err != nil {
-		return err
-	}
-
-	tmp, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	b.Err = KError(tmp)
-
-	return nil
-}
-
-func (b *OffsetFetchResponseBlock) encode(pe packetEncoder, version int16) (err error) {
-	pe.putInt64(b.Offset)
-
-	if version >= 5 {
-		pe.putInt32(b.LeaderEpoch)
-	}
-
-	err = pe.putString(b.Metadata)
-	if err != nil {
-		return err
-	}
-
-	pe.putInt16(int16(b.Err))
-
-	return nil
-}
-
-type OffsetFetchResponse struct {
-	Version        int16
-	ThrottleTimeMs int32
-	Blocks         map[string]map[int32]*OffsetFetchResponseBlock
-	Err            KError
-}
-
-func (r *OffsetFetchResponse) encode(pe packetEncoder) error {
-	if r.Version >= 3 {
-		pe.putInt32(r.ThrottleTimeMs)
-	}
-
-	if err := pe.putArrayLength(len(r.Blocks)); err != nil {
-		return err
-	}
-	for topic, partitions := range r.Blocks {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := pe.putArrayLength(len(partitions)); err != nil {
-			return err
-		}
-		for partition, block := range partitions {
-			pe.putInt32(partition)
-			if err := block.encode(pe, r.Version); err != nil {
-				return err
-			}
-		}
-	}
-	if r.Version >= 2 {
-		pe.putInt16(int16(r.Err))
-	}
-	return nil
-}
-
-func (r *OffsetFetchResponse) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-
-	if version >= 3 {
-		r.ThrottleTimeMs, err = pd.getInt32()
-		if err != nil {
-			return err
-		}
-	}
-
-	numTopics, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	if numTopics > 0 {
-		r.Blocks = make(map[string]map[int32]*OffsetFetchResponseBlock, numTopics)
-		for i := 0; i < numTopics; i++ {
-			name, err := pd.getString()
-			if err != nil {
-				return err
-			}
-
-			numBlocks, err := pd.getArrayLength()
-			if err != nil {
-				return err
-			}
-
-			if numBlocks == 0 {
-				r.Blocks[name] = nil
-				continue
-			}
-			r.Blocks[name] = make(map[int32]*OffsetFetchResponseBlock, numBlocks)
-
-			for j := 0; j < numBlocks; j++ {
-				id, err := pd.getInt32()
-				if err != nil {
-					return err
-				}
-
-				block := new(OffsetFetchResponseBlock)
-				err = block.decode(pd, version)
-				if err != nil {
-					return err
-				}
-				r.Blocks[name][id] = block
-			}
-		}
-	}
-
-	if version >= 2 {
-		kerr, err := pd.getInt16()
-		if err != nil {
-			return err
-		}
-		r.Err = KError(kerr)
-	}
-
-	return nil
-}
-
-func (r *OffsetFetchResponse) key() int16 {
-	return 9
-}
-
-func (r *OffsetFetchResponse) version() int16 {
-	return r.Version
-}
-
-func (r *OffsetFetchResponse) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_8_2_0
-	case 2:
-		return V0_10_2_0
-	case 3:
-		return V0_11_0_0
-	case 4:
-		return V2_0_0_0
-	case 5:
-		return V2_1_0_0
-	default:
-		return MinVersion
-	}
-}
-
-func (r *OffsetFetchResponse) GetBlock(topic string, partition int32) *OffsetFetchResponseBlock {
-	if r.Blocks == nil {
-		return nil
-	}
-
-	if r.Blocks[topic] == nil {
-		return nil
-	}
-
-	return r.Blocks[topic][partition]
-}
-
-func (r *OffsetFetchResponse) AddBlock(topic string, partition int32, block *OffsetFetchResponseBlock) {
-	if r.Blocks == nil {
-		r.Blocks = make(map[string]map[int32]*OffsetFetchResponseBlock)
-	}
-	partitions := r.Blocks[topic]
-	if partitions == nil {
-		partitions = make(map[int32]*OffsetFetchResponseBlock)
-		r.Blocks[topic] = partitions
-	}
-	partitions[partition] = block
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/offset_manager.go b/vendor/gopkg.in/Shopify/sarama.v1/offset_manager.go
deleted file mode 100644
index 2432f7b..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/offset_manager.go
+++ /dev/null
@@ -1,581 +0,0 @@
-package sarama
-
-import (
-	"sync"
-	"time"
-)
-
-// Offset Manager
-
-// OffsetManager uses Kafka to store and fetch consumed partition offsets.
-type OffsetManager interface {
-	// ManagePartition creates a PartitionOffsetManager on the given topic/partition.
-	// It will return an error if this OffsetManager is already managing the given
-	// topic/partition.
-	ManagePartition(topic string, partition int32) (PartitionOffsetManager, error)
-
-	// Close stops the OffsetManager from managing offsets. It is required to call
-	// this function before an OffsetManager object passes out of scope, as it
-	// will otherwise leak memory. You must call this after all the
-	// PartitionOffsetManagers are closed.
-	Close() error
-}
-
-type offsetManager struct {
-	client Client
-	conf   *Config
-	group  string
-	ticker *time.Ticker
-
-	memberID   string
-	generation int32
-
-	broker     *Broker
-	brokerLock sync.RWMutex
-
-	poms     map[string]map[int32]*partitionOffsetManager
-	pomsLock sync.RWMutex
-
-	closeOnce sync.Once
-	closing   chan none
-	closed    chan none
-}
-
-// NewOffsetManagerFromClient creates a new OffsetManager from the given client.
-// It is still necessary to call Close() on the underlying client when finished with the partition manager.
-func NewOffsetManagerFromClient(group string, client Client) (OffsetManager, error) {
-	return newOffsetManagerFromClient(group, "", GroupGenerationUndefined, client)
-}
-
-func newOffsetManagerFromClient(group, memberID string, generation int32, client Client) (*offsetManager, error) {
-	// Check that we are not dealing with a closed Client before processing any other arguments
-	if client.Closed() {
-		return nil, ErrClosedClient
-	}
-
-	conf := client.Config()
-	om := &offsetManager{
-		client: client,
-		conf:   conf,
-		group:  group,
-		ticker: time.NewTicker(conf.Consumer.Offsets.CommitInterval),
-		poms:   make(map[string]map[int32]*partitionOffsetManager),
-
-		memberID:   memberID,
-		generation: generation,
-
-		closing: make(chan none),
-		closed:  make(chan none),
-	}
-	go withRecover(om.mainLoop)
-
-	return om, nil
-}
-
-func (om *offsetManager) ManagePartition(topic string, partition int32) (PartitionOffsetManager, error) {
-	pom, err := om.newPartitionOffsetManager(topic, partition)
-	if err != nil {
-		return nil, err
-	}
-
-	om.pomsLock.Lock()
-	defer om.pomsLock.Unlock()
-
-	topicManagers := om.poms[topic]
-	if topicManagers == nil {
-		topicManagers = make(map[int32]*partitionOffsetManager)
-		om.poms[topic] = topicManagers
-	}
-
-	if topicManagers[partition] != nil {
-		return nil, ConfigurationError("That topic/partition is already being managed")
-	}
-
-	topicManagers[partition] = pom
-	return pom, nil
-}
-
-func (om *offsetManager) Close() error {
-	om.closeOnce.Do(func() {
-		// exit the mainLoop
-		close(om.closing)
-		<-om.closed
-
-		// mark all POMs as closed
-		om.asyncClosePOMs()
-
-		// flush one last time
-		for attempt := 0; attempt <= om.conf.Consumer.Offsets.Retry.Max; attempt++ {
-			om.flushToBroker()
-			if om.releasePOMs(false) == 0 {
-				break
-			}
-		}
-
-		om.releasePOMs(true)
-		om.brokerLock.Lock()
-		om.broker = nil
-		om.brokerLock.Unlock()
-	})
-	return nil
-}
-
-func (om *offsetManager) computeBackoff(retries int) time.Duration {
-	if om.conf.Metadata.Retry.BackoffFunc != nil {
-		return om.conf.Metadata.Retry.BackoffFunc(retries, om.conf.Metadata.Retry.Max)
-	} else {
-		return om.conf.Metadata.Retry.Backoff
-	}
-}
-
-func (om *offsetManager) fetchInitialOffset(topic string, partition int32, retries int) (int64, string, error) {
-	broker, err := om.coordinator()
-	if err != nil {
-		if retries <= 0 {
-			return 0, "", err
-		}
-		return om.fetchInitialOffset(topic, partition, retries-1)
-	}
-
-	req := new(OffsetFetchRequest)
-	req.Version = 1
-	req.ConsumerGroup = om.group
-	req.AddPartition(topic, partition)
-
-	resp, err := broker.FetchOffset(req)
-	if err != nil {
-		if retries <= 0 {
-			return 0, "", err
-		}
-		om.releaseCoordinator(broker)
-		return om.fetchInitialOffset(topic, partition, retries-1)
-	}
-
-	block := resp.GetBlock(topic, partition)
-	if block == nil {
-		return 0, "", ErrIncompleteResponse
-	}
-
-	switch block.Err {
-	case ErrNoError:
-		return block.Offset, block.Metadata, nil
-	case ErrNotCoordinatorForConsumer:
-		if retries <= 0 {
-			return 0, "", block.Err
-		}
-		om.releaseCoordinator(broker)
-		return om.fetchInitialOffset(topic, partition, retries-1)
-	case ErrOffsetsLoadInProgress:
-		if retries <= 0 {
-			return 0, "", block.Err
-		}
-		backoff := om.computeBackoff(retries)
-		select {
-		case <-om.closing:
-			return 0, "", block.Err
-		case <-time.After(backoff):
-		}
-		return om.fetchInitialOffset(topic, partition, retries-1)
-	default:
-		return 0, "", block.Err
-	}
-}
-
-func (om *offsetManager) coordinator() (*Broker, error) {
-	om.brokerLock.RLock()
-	broker := om.broker
-	om.brokerLock.RUnlock()
-
-	if broker != nil {
-		return broker, nil
-	}
-
-	om.brokerLock.Lock()
-	defer om.brokerLock.Unlock()
-
-	if broker := om.broker; broker != nil {
-		return broker, nil
-	}
-
-	if err := om.client.RefreshCoordinator(om.group); err != nil {
-		return nil, err
-	}
-
-	broker, err := om.client.Coordinator(om.group)
-	if err != nil {
-		return nil, err
-	}
-
-	om.broker = broker
-	return broker, nil
-}
-
-func (om *offsetManager) releaseCoordinator(b *Broker) {
-	om.brokerLock.Lock()
-	if om.broker == b {
-		om.broker = nil
-	}
-	om.brokerLock.Unlock()
-}
-
-func (om *offsetManager) mainLoop() {
-	defer om.ticker.Stop()
-	defer close(om.closed)
-
-	for {
-		select {
-		case <-om.ticker.C:
-			om.flushToBroker()
-			om.releasePOMs(false)
-		case <-om.closing:
-			return
-		}
-	}
-}
-
-func (om *offsetManager) flushToBroker() {
-	req := om.constructRequest()
-	if req == nil {
-		return
-	}
-
-	broker, err := om.coordinator()
-	if err != nil {
-		om.handleError(err)
-		return
-	}
-
-	resp, err := broker.CommitOffset(req)
-	if err != nil {
-		om.handleError(err)
-		om.releaseCoordinator(broker)
-		_ = broker.Close()
-		return
-	}
-
-	om.handleResponse(broker, req, resp)
-}
-
-func (om *offsetManager) constructRequest() *OffsetCommitRequest {
-	var r *OffsetCommitRequest
-	var perPartitionTimestamp int64
-	if om.conf.Consumer.Offsets.Retention == 0 {
-		perPartitionTimestamp = ReceiveTime
-		r = &OffsetCommitRequest{
-			Version:                 1,
-			ConsumerGroup:           om.group,
-			ConsumerID:              om.memberID,
-			ConsumerGroupGeneration: om.generation,
-		}
-	} else {
-		r = &OffsetCommitRequest{
-			Version:                 2,
-			RetentionTime:           int64(om.conf.Consumer.Offsets.Retention / time.Millisecond),
-			ConsumerGroup:           om.group,
-			ConsumerID:              om.memberID,
-			ConsumerGroupGeneration: om.generation,
-		}
-
-	}
-
-	om.pomsLock.RLock()
-	defer om.pomsLock.RUnlock()
-
-	for _, topicManagers := range om.poms {
-		for _, pom := range topicManagers {
-			pom.lock.Lock()
-			if pom.dirty {
-				r.AddBlock(pom.topic, pom.partition, pom.offset, perPartitionTimestamp, pom.metadata)
-			}
-			pom.lock.Unlock()
-		}
-	}
-
-	if len(r.blocks) > 0 {
-		return r
-	}
-
-	return nil
-}
-
-func (om *offsetManager) handleResponse(broker *Broker, req *OffsetCommitRequest, resp *OffsetCommitResponse) {
-	om.pomsLock.RLock()
-	defer om.pomsLock.RUnlock()
-
-	for _, topicManagers := range om.poms {
-		for _, pom := range topicManagers {
-			if req.blocks[pom.topic] == nil || req.blocks[pom.topic][pom.partition] == nil {
-				continue
-			}
-
-			var err KError
-			var ok bool
-
-			if resp.Errors[pom.topic] == nil {
-				pom.handleError(ErrIncompleteResponse)
-				continue
-			}
-			if err, ok = resp.Errors[pom.topic][pom.partition]; !ok {
-				pom.handleError(ErrIncompleteResponse)
-				continue
-			}
-
-			switch err {
-			case ErrNoError:
-				block := req.blocks[pom.topic][pom.partition]
-				pom.updateCommitted(block.offset, block.metadata)
-			case ErrNotLeaderForPartition, ErrLeaderNotAvailable,
-				ErrConsumerCoordinatorNotAvailable, ErrNotCoordinatorForConsumer:
-				// not a critical error, we just need to redispatch
-				om.releaseCoordinator(broker)
-			case ErrOffsetMetadataTooLarge, ErrInvalidCommitOffsetSize:
-				// nothing we can do about this, just tell the user and carry on
-				pom.handleError(err)
-			case ErrOffsetsLoadInProgress:
-				// nothing wrong but we didn't commit, we'll get it next time round
-				break
-			case ErrUnknownTopicOrPartition:
-				// let the user know *and* try redispatching - if topic-auto-create is
-				// enabled, redispatching should trigger a metadata req and create the
-				// topic; if not then re-dispatching won't help, but we've let the user
-				// know and it shouldn't hurt either (see https://github.com/Shopify/sarama/issues/706)
-				fallthrough
-			default:
-				// dunno, tell the user and try redispatching
-				pom.handleError(err)
-				om.releaseCoordinator(broker)
-			}
-		}
-	}
-}
-
-func (om *offsetManager) handleError(err error) {
-	om.pomsLock.RLock()
-	defer om.pomsLock.RUnlock()
-
-	for _, topicManagers := range om.poms {
-		for _, pom := range topicManagers {
-			pom.handleError(err)
-		}
-	}
-}
-
-func (om *offsetManager) asyncClosePOMs() {
-	om.pomsLock.RLock()
-	defer om.pomsLock.RUnlock()
-
-	for _, topicManagers := range om.poms {
-		for _, pom := range topicManagers {
-			pom.AsyncClose()
-		}
-	}
-}
-
-// Releases/removes closed POMs once they are clean (or when forced)
-func (om *offsetManager) releasePOMs(force bool) (remaining int) {
-	om.pomsLock.Lock()
-	defer om.pomsLock.Unlock()
-
-	for topic, topicManagers := range om.poms {
-		for partition, pom := range topicManagers {
-			pom.lock.Lock()
-			releaseDue := pom.done && (force || !pom.dirty)
-			pom.lock.Unlock()
-
-			if releaseDue {
-				pom.release()
-
-				delete(om.poms[topic], partition)
-				if len(om.poms[topic]) == 0 {
-					delete(om.poms, topic)
-				}
-			}
-		}
-		remaining += len(om.poms[topic])
-	}
-	return
-}
-
-func (om *offsetManager) findPOM(topic string, partition int32) *partitionOffsetManager {
-	om.pomsLock.RLock()
-	defer om.pomsLock.RUnlock()
-
-	if partitions, ok := om.poms[topic]; ok {
-		if pom, ok := partitions[partition]; ok {
-			return pom
-		}
-	}
-	return nil
-}
-
-// Partition Offset Manager
-
-// PartitionOffsetManager uses Kafka to store and fetch consumed partition offsets. You MUST call Close()
-// on a partition offset manager to avoid leaks, it will not be garbage-collected automatically when it passes
-// out of scope.
-type PartitionOffsetManager interface {
-	// NextOffset returns the next offset that should be consumed for the managed
-	// partition, accompanied by metadata which can be used to reconstruct the state
-	// of the partition consumer when it resumes. NextOffset() will return
-	// `config.Consumer.Offsets.Initial` and an empty metadata string if no offset
-	// was committed for this partition yet.
-	NextOffset() (int64, string)
-
-	// MarkOffset marks the provided offset, alongside a metadata string
-	// that represents the state of the partition consumer at that point in time. The
-	// metadata string can be used by another consumer to restore that state, so it
-	// can resume consumption.
-	//
-	// To follow upstream conventions, you are expected to mark the offset of the
-	// next message to read, not the last message read. Thus, when calling `MarkOffset`
-	// you should typically add one to the offset of the last consumed message.
-	//
-	// Note: calling MarkOffset does not necessarily commit the offset to the backend
-	// store immediately for efficiency reasons, and it may never be committed if
-	// your application crashes. This means that you may end up processing the same
-	// message twice, and your processing should ideally be idempotent.
-	MarkOffset(offset int64, metadata string)
-
-	// ResetOffset resets to the provided offset, alongside a metadata string that
-	// represents the state of the partition consumer at that point in time. Reset
-	// acts as a counterpart to MarkOffset, the difference being that it allows to
-	// reset an offset to an earlier or smaller value, where MarkOffset only
-	// allows incrementing the offset. cf MarkOffset for more details.
-	ResetOffset(offset int64, metadata string)
-
-	// Errors returns a read channel of errors that occur during offset management, if
-	// enabled. By default, errors are logged and not returned over this channel. If
-	// you want to implement any custom error handling, set your config's
-	// Consumer.Return.Errors setting to true, and read from this channel.
-	Errors() <-chan *ConsumerError
-
-	// AsyncClose initiates a shutdown of the PartitionOffsetManager. This method will
-	// return immediately, after which you should wait until the 'errors' channel has
-	// been drained and closed. It is required to call this function, or Close before
-	// a consumer object passes out of scope, as it will otherwise leak memory. You
-	// must call this before calling Close on the underlying client.
-	AsyncClose()
-
-	// Close stops the PartitionOffsetManager from managing offsets. It is required to
-	// call this function (or AsyncClose) before a PartitionOffsetManager object
-	// passes out of scope, as it will otherwise leak memory. You must call this
-	// before calling Close on the underlying client.
-	Close() error
-}
-
-type partitionOffsetManager struct {
-	parent    *offsetManager
-	topic     string
-	partition int32
-
-	lock     sync.Mutex
-	offset   int64
-	metadata string
-	dirty    bool
-	done     bool
-
-	releaseOnce sync.Once
-	errors      chan *ConsumerError
-}
-
-func (om *offsetManager) newPartitionOffsetManager(topic string, partition int32) (*partitionOffsetManager, error) {
-	offset, metadata, err := om.fetchInitialOffset(topic, partition, om.conf.Metadata.Retry.Max)
-	if err != nil {
-		return nil, err
-	}
-
-	return &partitionOffsetManager{
-		parent:    om,
-		topic:     topic,
-		partition: partition,
-		errors:    make(chan *ConsumerError, om.conf.ChannelBufferSize),
-		offset:    offset,
-		metadata:  metadata,
-	}, nil
-}
-
-func (pom *partitionOffsetManager) Errors() <-chan *ConsumerError {
-	return pom.errors
-}
-
-func (pom *partitionOffsetManager) MarkOffset(offset int64, metadata string) {
-	pom.lock.Lock()
-	defer pom.lock.Unlock()
-
-	if offset > pom.offset {
-		pom.offset = offset
-		pom.metadata = metadata
-		pom.dirty = true
-	}
-}
-
-func (pom *partitionOffsetManager) ResetOffset(offset int64, metadata string) {
-	pom.lock.Lock()
-	defer pom.lock.Unlock()
-
-	if offset <= pom.offset {
-		pom.offset = offset
-		pom.metadata = metadata
-		pom.dirty = true
-	}
-}
-
-func (pom *partitionOffsetManager) updateCommitted(offset int64, metadata string) {
-	pom.lock.Lock()
-	defer pom.lock.Unlock()
-
-	if pom.offset == offset && pom.metadata == metadata {
-		pom.dirty = false
-	}
-}
-
-func (pom *partitionOffsetManager) NextOffset() (int64, string) {
-	pom.lock.Lock()
-	defer pom.lock.Unlock()
-
-	if pom.offset >= 0 {
-		return pom.offset, pom.metadata
-	}
-
-	return pom.parent.conf.Consumer.Offsets.Initial, ""
-}
-
-func (pom *partitionOffsetManager) AsyncClose() {
-	pom.lock.Lock()
-	pom.done = true
-	pom.lock.Unlock()
-}
-
-func (pom *partitionOffsetManager) Close() error {
-	pom.AsyncClose()
-
-	var errors ConsumerErrors
-	for err := range pom.errors {
-		errors = append(errors, err)
-	}
-
-	if len(errors) > 0 {
-		return errors
-	}
-	return nil
-}
-
-func (pom *partitionOffsetManager) handleError(err error) {
-	cErr := &ConsumerError{
-		Topic:     pom.topic,
-		Partition: pom.partition,
-		Err:       err,
-	}
-
-	if pom.parent.conf.Consumer.Return.Errors {
-		pom.errors <- cErr
-	} else {
-		Logger.Println(cErr)
-	}
-}
-
-func (pom *partitionOffsetManager) release() {
-	pom.releaseOnce.Do(func() {
-		go close(pom.errors)
-	})
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/offset_request.go b/vendor/gopkg.in/Shopify/sarama.v1/offset_request.go
deleted file mode 100644
index 326c372..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/offset_request.go
+++ /dev/null
@@ -1,156 +0,0 @@
-package sarama
-
-type offsetRequestBlock struct {
-	time       int64
-	maxOffsets int32 // Only used in version 0
-}
-
-func (b *offsetRequestBlock) encode(pe packetEncoder, version int16) error {
-	pe.putInt64(int64(b.time))
-	if version == 0 {
-		pe.putInt32(b.maxOffsets)
-	}
-
-	return nil
-}
-
-func (b *offsetRequestBlock) decode(pd packetDecoder, version int16) (err error) {
-	if b.time, err = pd.getInt64(); err != nil {
-		return err
-	}
-	if version == 0 {
-		if b.maxOffsets, err = pd.getInt32(); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-type OffsetRequest struct {
-	Version        int16
-	replicaID      int32
-	isReplicaIDSet bool
-	blocks         map[string]map[int32]*offsetRequestBlock
-}
-
-func (r *OffsetRequest) encode(pe packetEncoder) error {
-	if r.isReplicaIDSet {
-		pe.putInt32(r.replicaID)
-	} else {
-		// default replica ID is always -1 for clients
-		pe.putInt32(-1)
-	}
-
-	err := pe.putArrayLength(len(r.blocks))
-	if err != nil {
-		return err
-	}
-	for topic, partitions := range r.blocks {
-		err = pe.putString(topic)
-		if err != nil {
-			return err
-		}
-		err = pe.putArrayLength(len(partitions))
-		if err != nil {
-			return err
-		}
-		for partition, block := range partitions {
-			pe.putInt32(partition)
-			if err = block.encode(pe, r.Version); err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func (r *OffsetRequest) decode(pd packetDecoder, version int16) error {
-	r.Version = version
-
-	replicaID, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	if replicaID >= 0 {
-		r.SetReplicaID(replicaID)
-	}
-
-	blockCount, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if blockCount == 0 {
-		return nil
-	}
-	r.blocks = make(map[string]map[int32]*offsetRequestBlock)
-	for i := 0; i < blockCount; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		partitionCount, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-		r.blocks[topic] = make(map[int32]*offsetRequestBlock)
-		for j := 0; j < partitionCount; j++ {
-			partition, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-			block := &offsetRequestBlock{}
-			if err := block.decode(pd, version); err != nil {
-				return err
-			}
-			r.blocks[topic][partition] = block
-		}
-	}
-	return nil
-}
-
-func (r *OffsetRequest) key() int16 {
-	return 2
-}
-
-func (r *OffsetRequest) version() int16 {
-	return r.Version
-}
-
-func (r *OffsetRequest) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_10_1_0
-	default:
-		return MinVersion
-	}
-}
-
-func (r *OffsetRequest) SetReplicaID(id int32) {
-	r.replicaID = id
-	r.isReplicaIDSet = true
-}
-
-func (r *OffsetRequest) ReplicaID() int32 {
-	if r.isReplicaIDSet {
-		return r.replicaID
-	}
-	return -1
-}
-
-func (r *OffsetRequest) AddBlock(topic string, partitionID int32, time int64, maxOffsets int32) {
-	if r.blocks == nil {
-		r.blocks = make(map[string]map[int32]*offsetRequestBlock)
-	}
-
-	if r.blocks[topic] == nil {
-		r.blocks[topic] = make(map[int32]*offsetRequestBlock)
-	}
-
-	tmp := new(offsetRequestBlock)
-	tmp.time = time
-	if r.Version == 0 {
-		tmp.maxOffsets = maxOffsets
-	}
-
-	r.blocks[topic][partitionID] = tmp
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/offset_response.go b/vendor/gopkg.in/Shopify/sarama.v1/offset_response.go
deleted file mode 100644
index 8b2193f..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/offset_response.go
+++ /dev/null
@@ -1,174 +0,0 @@
-package sarama
-
-type OffsetResponseBlock struct {
-	Err       KError
-	Offsets   []int64 // Version 0
-	Offset    int64   // Version 1
-	Timestamp int64   // Version 1
-}
-
-func (b *OffsetResponseBlock) decode(pd packetDecoder, version int16) (err error) {
-	tmp, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	b.Err = KError(tmp)
-
-	if version == 0 {
-		b.Offsets, err = pd.getInt64Array()
-
-		return err
-	}
-
-	b.Timestamp, err = pd.getInt64()
-	if err != nil {
-		return err
-	}
-
-	b.Offset, err = pd.getInt64()
-	if err != nil {
-		return err
-	}
-
-	// For backwards compatibility put the offset in the offsets array too
-	b.Offsets = []int64{b.Offset}
-
-	return nil
-}
-
-func (b *OffsetResponseBlock) encode(pe packetEncoder, version int16) (err error) {
-	pe.putInt16(int16(b.Err))
-
-	if version == 0 {
-		return pe.putInt64Array(b.Offsets)
-	}
-
-	pe.putInt64(b.Timestamp)
-	pe.putInt64(b.Offset)
-
-	return nil
-}
-
-type OffsetResponse struct {
-	Version int16
-	Blocks  map[string]map[int32]*OffsetResponseBlock
-}
-
-func (r *OffsetResponse) decode(pd packetDecoder, version int16) (err error) {
-	numTopics, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Blocks = make(map[string]map[int32]*OffsetResponseBlock, numTopics)
-	for i := 0; i < numTopics; i++ {
-		name, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		numBlocks, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-
-		r.Blocks[name] = make(map[int32]*OffsetResponseBlock, numBlocks)
-
-		for j := 0; j < numBlocks; j++ {
-			id, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-
-			block := new(OffsetResponseBlock)
-			err = block.decode(pd, version)
-			if err != nil {
-				return err
-			}
-			r.Blocks[name][id] = block
-		}
-	}
-
-	return nil
-}
-
-func (r *OffsetResponse) GetBlock(topic string, partition int32) *OffsetResponseBlock {
-	if r.Blocks == nil {
-		return nil
-	}
-
-	if r.Blocks[topic] == nil {
-		return nil
-	}
-
-	return r.Blocks[topic][partition]
-}
-
-/*
-// [0 0 0 1 ntopics
-0 8 109 121 95 116 111 112 105 99 topic
-0 0 0 1 npartitions
-0 0 0 0 id
-0 0
-
-0 0 0 1 0 0 0 0
-0 1 1 1 0 0 0 1
-0 8 109 121 95 116 111 112
-105 99 0 0 0 1 0 0
-0 0 0 0 0 0 0 1
-0 0 0 0 0 1 1 1] <nil>
-
-*/
-func (r *OffsetResponse) encode(pe packetEncoder) (err error) {
-	if err = pe.putArrayLength(len(r.Blocks)); err != nil {
-		return err
-	}
-
-	for topic, partitions := range r.Blocks {
-		if err = pe.putString(topic); err != nil {
-			return err
-		}
-		if err = pe.putArrayLength(len(partitions)); err != nil {
-			return err
-		}
-		for partition, block := range partitions {
-			pe.putInt32(partition)
-			if err = block.encode(pe, r.version()); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-func (r *OffsetResponse) key() int16 {
-	return 2
-}
-
-func (r *OffsetResponse) version() int16 {
-	return r.Version
-}
-
-func (r *OffsetResponse) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_10_1_0
-	default:
-		return MinVersion
-	}
-}
-
-// testing API
-
-func (r *OffsetResponse) AddTopicPartition(topic string, partition int32, offset int64) {
-	if r.Blocks == nil {
-		r.Blocks = make(map[string]map[int32]*OffsetResponseBlock)
-	}
-	byTopic, ok := r.Blocks[topic]
-	if !ok {
-		byTopic = make(map[int32]*OffsetResponseBlock)
-		r.Blocks[topic] = byTopic
-	}
-	byTopic[partition] = &OffsetResponseBlock{Offsets: []int64{offset}, Offset: offset}
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/packet_decoder.go b/vendor/gopkg.in/Shopify/sarama.v1/packet_decoder.go
deleted file mode 100644
index 74805cc..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/packet_decoder.go
+++ /dev/null
@@ -1,60 +0,0 @@
-package sarama
-
-// PacketDecoder is the interface providing helpers for reading with Kafka's encoding rules.
-// Types implementing Decoder only need to worry about calling methods like GetString,
-// not about how a string is represented in Kafka.
-type packetDecoder interface {
-	// Primitives
-	getInt8() (int8, error)
-	getInt16() (int16, error)
-	getInt32() (int32, error)
-	getInt64() (int64, error)
-	getVarint() (int64, error)
-	getArrayLength() (int, error)
-	getBool() (bool, error)
-
-	// Collections
-	getBytes() ([]byte, error)
-	getVarintBytes() ([]byte, error)
-	getRawBytes(length int) ([]byte, error)
-	getString() (string, error)
-	getNullableString() (*string, error)
-	getInt32Array() ([]int32, error)
-	getInt64Array() ([]int64, error)
-	getStringArray() ([]string, error)
-
-	// Subsets
-	remaining() int
-	getSubset(length int) (packetDecoder, error)
-	peek(offset, length int) (packetDecoder, error) // similar to getSubset, but it doesn't advance the offset
-
-	// Stacks, see PushDecoder
-	push(in pushDecoder) error
-	pop() error
-}
-
-// PushDecoder is the interface for decoding fields like CRCs and lengths where the validity
-// of the field depends on what is after it in the packet. Start them with PacketDecoder.Push() where
-// the actual value is located in the packet, then PacketDecoder.Pop() them when all the bytes they
-// depend upon have been decoded.
-type pushDecoder interface {
-	// Saves the offset into the input buffer as the location to actually read the calculated value when able.
-	saveOffset(in int)
-
-	// Returns the length of data to reserve for the input of this encoder (eg 4 bytes for a CRC32).
-	reserveLength() int
-
-	// Indicates that all required data is now available to calculate and check the field.
-	// SaveOffset is guaranteed to have been called first. The implementation should read ReserveLength() bytes
-	// of data from the saved offset, and verify it based on the data between the saved offset and curOffset.
-	check(curOffset int, buf []byte) error
-}
-
-// dynamicPushDecoder extends the interface of pushDecoder for uses cases where the length of the
-// fields itself is unknown until its value was decoded (for instance varint encoded length
-// fields).
-// During push, dynamicPushDecoder.decode() method will be called instead of reserveLength()
-type dynamicPushDecoder interface {
-	pushDecoder
-	decoder
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/packet_encoder.go b/vendor/gopkg.in/Shopify/sarama.v1/packet_encoder.go
deleted file mode 100644
index 67b8dae..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/packet_encoder.go
+++ /dev/null
@@ -1,65 +0,0 @@
-package sarama
-
-import "github.com/rcrowley/go-metrics"
-
-// PacketEncoder is the interface providing helpers for writing with Kafka's encoding rules.
-// Types implementing Encoder only need to worry about calling methods like PutString,
-// not about how a string is represented in Kafka.
-type packetEncoder interface {
-	// Primitives
-	putInt8(in int8)
-	putInt16(in int16)
-	putInt32(in int32)
-	putInt64(in int64)
-	putVarint(in int64)
-	putArrayLength(in int) error
-	putBool(in bool)
-
-	// Collections
-	putBytes(in []byte) error
-	putVarintBytes(in []byte) error
-	putRawBytes(in []byte) error
-	putString(in string) error
-	putNullableString(in *string) error
-	putStringArray(in []string) error
-	putInt32Array(in []int32) error
-	putInt64Array(in []int64) error
-
-	// Provide the current offset to record the batch size metric
-	offset() int
-
-	// Stacks, see PushEncoder
-	push(in pushEncoder)
-	pop() error
-
-	// To record metrics when provided
-	metricRegistry() metrics.Registry
-}
-
-// PushEncoder is the interface for encoding fields like CRCs and lengths where the value
-// of the field depends on what is encoded after it in the packet. Start them with PacketEncoder.Push() where
-// the actual value is located in the packet, then PacketEncoder.Pop() them when all the bytes they
-// depend upon have been written.
-type pushEncoder interface {
-	// Saves the offset into the input buffer as the location to actually write the calculated value when able.
-	saveOffset(in int)
-
-	// Returns the length of data to reserve for the output of this encoder (eg 4 bytes for a CRC32).
-	reserveLength() int
-
-	// Indicates that all required data is now available to calculate and write the field.
-	// SaveOffset is guaranteed to have been called first. The implementation should write ReserveLength() bytes
-	// of data to the saved offset, based on the data between the saved offset and curOffset.
-	run(curOffset int, buf []byte) error
-}
-
-// dynamicPushEncoder extends the interface of pushEncoder for uses cases where the length of the
-// fields itself is unknown until its value was computed (for instance varint encoded length
-// fields).
-type dynamicPushEncoder interface {
-	pushEncoder
-
-	// Called during pop() to adjust the length of the field.
-	// It should return the difference in bytes between the last computed length and current length.
-	adjustLength(currOffset int) int
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/partitioner.go b/vendor/gopkg.in/Shopify/sarama.v1/partitioner.go
deleted file mode 100644
index 6a708e7..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/partitioner.go
+++ /dev/null
@@ -1,217 +0,0 @@
-package sarama
-
-import (
-	"hash"
-	"hash/fnv"
-	"math/rand"
-	"time"
-)
-
-// Partitioner is anything that, given a Kafka message and a number of partitions indexed [0...numPartitions-1],
-// decides to which partition to send the message. RandomPartitioner, RoundRobinPartitioner and HashPartitioner are provided
-// as simple default implementations.
-type Partitioner interface {
-	// Partition takes a message and partition count and chooses a partition
-	Partition(message *ProducerMessage, numPartitions int32) (int32, error)
-
-	// RequiresConsistency indicates to the user of the partitioner whether the
-	// mapping of key->partition is consistent or not. Specifically, if a
-	// partitioner requires consistency then it must be allowed to choose from all
-	// partitions (even ones known to be unavailable), and its choice must be
-	// respected by the caller. The obvious example is the HashPartitioner.
-	RequiresConsistency() bool
-}
-
-// DynamicConsistencyPartitioner can optionally be implemented by Partitioners
-// in order to allow more flexibility than is originally allowed by the
-// RequiresConsistency method in the Partitioner interface. This allows
-// partitioners to require consistency sometimes, but not all times. It's useful
-// for, e.g., the HashPartitioner, which does not require consistency if the
-// message key is nil.
-type DynamicConsistencyPartitioner interface {
-	Partitioner
-
-	// MessageRequiresConsistency is similar to Partitioner.RequiresConsistency,
-	// but takes in the message being partitioned so that the partitioner can
-	// make a per-message determination.
-	MessageRequiresConsistency(message *ProducerMessage) bool
-}
-
-// PartitionerConstructor is the type for a function capable of constructing new Partitioners.
-type PartitionerConstructor func(topic string) Partitioner
-
-type manualPartitioner struct{}
-
-// HashPartitionOption lets you modify default values of the partitioner
-type HashPartitionerOption func(*hashPartitioner)
-
-// WithAbsFirst means that the partitioner handles absolute values
-// in the same way as the reference Java implementation
-func WithAbsFirst() HashPartitionerOption {
-	return func(hp *hashPartitioner) {
-		hp.referenceAbs = true
-	}
-}
-
-// WithCustomHashFunction lets you specify what hash function to use for the partitioning
-func WithCustomHashFunction(hasher func() hash.Hash32) HashPartitionerOption {
-	return func(hp *hashPartitioner) {
-		hp.hasher = hasher()
-	}
-}
-
-// WithCustomFallbackPartitioner lets you specify what HashPartitioner should be used in case a Distribution Key is empty
-func WithCustomFallbackPartitioner(randomHP *hashPartitioner) HashPartitionerOption {
-	return func(hp *hashPartitioner) {
-		hp.random = hp
-	}
-}
-
-// NewManualPartitioner returns a Partitioner which uses the partition manually set in the provided
-// ProducerMessage's Partition field as the partition to produce to.
-func NewManualPartitioner(topic string) Partitioner {
-	return new(manualPartitioner)
-}
-
-func (p *manualPartitioner) Partition(message *ProducerMessage, numPartitions int32) (int32, error) {
-	return message.Partition, nil
-}
-
-func (p *manualPartitioner) RequiresConsistency() bool {
-	return true
-}
-
-type randomPartitioner struct {
-	generator *rand.Rand
-}
-
-// NewRandomPartitioner returns a Partitioner which chooses a random partition each time.
-func NewRandomPartitioner(topic string) Partitioner {
-	p := new(randomPartitioner)
-	p.generator = rand.New(rand.NewSource(time.Now().UTC().UnixNano()))
-	return p
-}
-
-func (p *randomPartitioner) Partition(message *ProducerMessage, numPartitions int32) (int32, error) {
-	return int32(p.generator.Intn(int(numPartitions))), nil
-}
-
-func (p *randomPartitioner) RequiresConsistency() bool {
-	return false
-}
-
-type roundRobinPartitioner struct {
-	partition int32
-}
-
-// NewRoundRobinPartitioner returns a Partitioner which walks through the available partitions one at a time.
-func NewRoundRobinPartitioner(topic string) Partitioner {
-	return &roundRobinPartitioner{}
-}
-
-func (p *roundRobinPartitioner) Partition(message *ProducerMessage, numPartitions int32) (int32, error) {
-	if p.partition >= numPartitions {
-		p.partition = 0
-	}
-	ret := p.partition
-	p.partition++
-	return ret, nil
-}
-
-func (p *roundRobinPartitioner) RequiresConsistency() bool {
-	return false
-}
-
-type hashPartitioner struct {
-	random       Partitioner
-	hasher       hash.Hash32
-	referenceAbs bool
-}
-
-// NewCustomHashPartitioner is a wrapper around NewHashPartitioner, allowing the use of custom hasher.
-// The argument is a function providing the instance, implementing the hash.Hash32 interface. This is to ensure that
-// each partition dispatcher gets its own hasher, to avoid concurrency issues by sharing an instance.
-func NewCustomHashPartitioner(hasher func() hash.Hash32) PartitionerConstructor {
-	return func(topic string) Partitioner {
-		p := new(hashPartitioner)
-		p.random = NewRandomPartitioner(topic)
-		p.hasher = hasher()
-		p.referenceAbs = false
-		return p
-	}
-}
-
-// NewCustomPartitioner creates a default Partitioner but lets you specify the behavior of each component via options
-func NewCustomPartitioner(options ...HashPartitionerOption) PartitionerConstructor {
-	return func(topic string) Partitioner {
-		p := new(hashPartitioner)
-		p.random = NewRandomPartitioner(topic)
-		p.hasher = fnv.New32a()
-		p.referenceAbs = false
-		for _, option := range options {
-			option(p)
-		}
-		return p
-	}
-}
-
-// NewHashPartitioner returns a Partitioner which behaves as follows. If the message's key is nil then a
-// random partition is chosen. Otherwise the FNV-1a hash of the encoded bytes of the message key is used,
-// modulus the number of partitions. This ensures that messages with the same key always end up on the
-// same partition.
-func NewHashPartitioner(topic string) Partitioner {
-	p := new(hashPartitioner)
-	p.random = NewRandomPartitioner(topic)
-	p.hasher = fnv.New32a()
-	p.referenceAbs = false
-	return p
-}
-
-// NewReferenceHashPartitioner is like NewHashPartitioner except that it handles absolute values
-// in the same way as the reference Java implementation. NewHashPartitioner was supposed to do
-// that but it had a mistake and now there are people depending on both behaviours. This will
-// all go away on the next major version bump.
-func NewReferenceHashPartitioner(topic string) Partitioner {
-	p := new(hashPartitioner)
-	p.random = NewRandomPartitioner(topic)
-	p.hasher = fnv.New32a()
-	p.referenceAbs = true
-	return p
-}
-
-func (p *hashPartitioner) Partition(message *ProducerMessage, numPartitions int32) (int32, error) {
-	if message.Key == nil {
-		return p.random.Partition(message, numPartitions)
-	}
-	bytes, err := message.Key.Encode()
-	if err != nil {
-		return -1, err
-	}
-	p.hasher.Reset()
-	_, err = p.hasher.Write(bytes)
-	if err != nil {
-		return -1, err
-	}
-	var partition int32
-	// Turns out we were doing our absolute value in a subtly different way from the upstream
-	// implementation, but now we need to maintain backwards compat for people who started using
-	// the old version; if referenceAbs is set we are compatible with the reference java client
-	// but not past Sarama versions
-	if p.referenceAbs {
-		partition = (int32(p.hasher.Sum32()) & 0x7fffffff) % numPartitions
-	} else {
-		partition = int32(p.hasher.Sum32()) % numPartitions
-		if partition < 0 {
-			partition = -partition
-		}
-	}
-	return partition, nil
-}
-
-func (p *hashPartitioner) RequiresConsistency() bool {
-	return true
-}
-
-func (p *hashPartitioner) MessageRequiresConsistency(message *ProducerMessage) bool {
-	return message.Key != nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/prep_encoder.go b/vendor/gopkg.in/Shopify/sarama.v1/prep_encoder.go
deleted file mode 100644
index b633cd1..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/prep_encoder.go
+++ /dev/null
@@ -1,153 +0,0 @@
-package sarama
-
-import (
-	"encoding/binary"
-	"fmt"
-	"math"
-
-	"github.com/rcrowley/go-metrics"
-)
-
-type prepEncoder struct {
-	stack  []pushEncoder
-	length int
-}
-
-// primitives
-
-func (pe *prepEncoder) putInt8(in int8) {
-	pe.length++
-}
-
-func (pe *prepEncoder) putInt16(in int16) {
-	pe.length += 2
-}
-
-func (pe *prepEncoder) putInt32(in int32) {
-	pe.length += 4
-}
-
-func (pe *prepEncoder) putInt64(in int64) {
-	pe.length += 8
-}
-
-func (pe *prepEncoder) putVarint(in int64) {
-	var buf [binary.MaxVarintLen64]byte
-	pe.length += binary.PutVarint(buf[:], in)
-}
-
-func (pe *prepEncoder) putArrayLength(in int) error {
-	if in > math.MaxInt32 {
-		return PacketEncodingError{fmt.Sprintf("array too long (%d)", in)}
-	}
-	pe.length += 4
-	return nil
-}
-
-func (pe *prepEncoder) putBool(in bool) {
-	pe.length++
-}
-
-// arrays
-
-func (pe *prepEncoder) putBytes(in []byte) error {
-	pe.length += 4
-	if in == nil {
-		return nil
-	}
-	return pe.putRawBytes(in)
-}
-
-func (pe *prepEncoder) putVarintBytes(in []byte) error {
-	if in == nil {
-		pe.putVarint(-1)
-		return nil
-	}
-	pe.putVarint(int64(len(in)))
-	return pe.putRawBytes(in)
-}
-
-func (pe *prepEncoder) putRawBytes(in []byte) error {
-	if len(in) > math.MaxInt32 {
-		return PacketEncodingError{fmt.Sprintf("byteslice too long (%d)", len(in))}
-	}
-	pe.length += len(in)
-	return nil
-}
-
-func (pe *prepEncoder) putNullableString(in *string) error {
-	if in == nil {
-		pe.length += 2
-		return nil
-	}
-	return pe.putString(*in)
-}
-
-func (pe *prepEncoder) putString(in string) error {
-	pe.length += 2
-	if len(in) > math.MaxInt16 {
-		return PacketEncodingError{fmt.Sprintf("string too long (%d)", len(in))}
-	}
-	pe.length += len(in)
-	return nil
-}
-
-func (pe *prepEncoder) putStringArray(in []string) error {
-	err := pe.putArrayLength(len(in))
-	if err != nil {
-		return err
-	}
-
-	for _, str := range in {
-		if err := pe.putString(str); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (pe *prepEncoder) putInt32Array(in []int32) error {
-	err := pe.putArrayLength(len(in))
-	if err != nil {
-		return err
-	}
-	pe.length += 4 * len(in)
-	return nil
-}
-
-func (pe *prepEncoder) putInt64Array(in []int64) error {
-	err := pe.putArrayLength(len(in))
-	if err != nil {
-		return err
-	}
-	pe.length += 8 * len(in)
-	return nil
-}
-
-func (pe *prepEncoder) offset() int {
-	return pe.length
-}
-
-// stackable
-
-func (pe *prepEncoder) push(in pushEncoder) {
-	in.saveOffset(pe.length)
-	pe.length += in.reserveLength()
-	pe.stack = append(pe.stack, in)
-}
-
-func (pe *prepEncoder) pop() error {
-	in := pe.stack[len(pe.stack)-1]
-	pe.stack = pe.stack[:len(pe.stack)-1]
-	if dpe, ok := in.(dynamicPushEncoder); ok {
-		pe.length += dpe.adjustLength(pe.length)
-	}
-
-	return nil
-}
-
-// we do not record metrics during the prep encoder pass
-func (pe *prepEncoder) metricRegistry() metrics.Registry {
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/produce_request.go b/vendor/gopkg.in/Shopify/sarama.v1/produce_request.go
deleted file mode 100644
index 0c755d0..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/produce_request.go
+++ /dev/null
@@ -1,252 +0,0 @@
-package sarama
-
-import "github.com/rcrowley/go-metrics"
-
-// RequiredAcks is used in Produce Requests to tell the broker how many replica acknowledgements
-// it must see before responding. Any of the constants defined here are valid. On broker versions
-// prior to 0.8.2.0 any other positive int16 is also valid (the broker will wait for that many
-// acknowledgements) but in 0.8.2.0 and later this will raise an exception (it has been replaced
-// by setting the `min.isr` value in the brokers configuration).
-type RequiredAcks int16
-
-const (
-	// NoResponse doesn't send any response, the TCP ACK is all you get.
-	NoResponse RequiredAcks = 0
-	// WaitForLocal waits for only the local commit to succeed before responding.
-	WaitForLocal RequiredAcks = 1
-	// WaitForAll waits for all in-sync replicas to commit before responding.
-	// The minimum number of in-sync replicas is configured on the broker via
-	// the `min.insync.replicas` configuration key.
-	WaitForAll RequiredAcks = -1
-)
-
-type ProduceRequest struct {
-	TransactionalID *string
-	RequiredAcks    RequiredAcks
-	Timeout         int32
-	Version         int16 // v1 requires Kafka 0.9, v2 requires Kafka 0.10, v3 requires Kafka 0.11
-	records         map[string]map[int32]Records
-}
-
-func updateMsgSetMetrics(msgSet *MessageSet, compressionRatioMetric metrics.Histogram,
-	topicCompressionRatioMetric metrics.Histogram) int64 {
-	var topicRecordCount int64
-	for _, messageBlock := range msgSet.Messages {
-		// Is this a fake "message" wrapping real messages?
-		if messageBlock.Msg.Set != nil {
-			topicRecordCount += int64(len(messageBlock.Msg.Set.Messages))
-		} else {
-			// A single uncompressed message
-			topicRecordCount++
-		}
-		// Better be safe than sorry when computing the compression ratio
-		if messageBlock.Msg.compressedSize != 0 {
-			compressionRatio := float64(len(messageBlock.Msg.Value)) /
-				float64(messageBlock.Msg.compressedSize)
-			// Histogram do not support decimal values, let's multiple it by 100 for better precision
-			intCompressionRatio := int64(100 * compressionRatio)
-			compressionRatioMetric.Update(intCompressionRatio)
-			topicCompressionRatioMetric.Update(intCompressionRatio)
-		}
-	}
-	return topicRecordCount
-}
-
-func updateBatchMetrics(recordBatch *RecordBatch, compressionRatioMetric metrics.Histogram,
-	topicCompressionRatioMetric metrics.Histogram) int64 {
-	if recordBatch.compressedRecords != nil {
-		compressionRatio := int64(float64(recordBatch.recordsLen) / float64(len(recordBatch.compressedRecords)) * 100)
-		compressionRatioMetric.Update(compressionRatio)
-		topicCompressionRatioMetric.Update(compressionRatio)
-	}
-
-	return int64(len(recordBatch.Records))
-}
-
-func (r *ProduceRequest) encode(pe packetEncoder) error {
-	if r.Version >= 3 {
-		if err := pe.putNullableString(r.TransactionalID); err != nil {
-			return err
-		}
-	}
-	pe.putInt16(int16(r.RequiredAcks))
-	pe.putInt32(r.Timeout)
-	metricRegistry := pe.metricRegistry()
-	var batchSizeMetric metrics.Histogram
-	var compressionRatioMetric metrics.Histogram
-	if metricRegistry != nil {
-		batchSizeMetric = getOrRegisterHistogram("batch-size", metricRegistry)
-		compressionRatioMetric = getOrRegisterHistogram("compression-ratio", metricRegistry)
-	}
-	totalRecordCount := int64(0)
-
-	err := pe.putArrayLength(len(r.records))
-	if err != nil {
-		return err
-	}
-
-	for topic, partitions := range r.records {
-		err = pe.putString(topic)
-		if err != nil {
-			return err
-		}
-		err = pe.putArrayLength(len(partitions))
-		if err != nil {
-			return err
-		}
-		topicRecordCount := int64(0)
-		var topicCompressionRatioMetric metrics.Histogram
-		if metricRegistry != nil {
-			topicCompressionRatioMetric = getOrRegisterTopicHistogram("compression-ratio", topic, metricRegistry)
-		}
-		for id, records := range partitions {
-			startOffset := pe.offset()
-			pe.putInt32(id)
-			pe.push(&lengthField{})
-			err = records.encode(pe)
-			if err != nil {
-				return err
-			}
-			err = pe.pop()
-			if err != nil {
-				return err
-			}
-			if metricRegistry != nil {
-				if r.Version >= 3 {
-					topicRecordCount += updateBatchMetrics(records.RecordBatch, compressionRatioMetric, topicCompressionRatioMetric)
-				} else {
-					topicRecordCount += updateMsgSetMetrics(records.MsgSet, compressionRatioMetric, topicCompressionRatioMetric)
-				}
-				batchSize := int64(pe.offset() - startOffset)
-				batchSizeMetric.Update(batchSize)
-				getOrRegisterTopicHistogram("batch-size", topic, metricRegistry).Update(batchSize)
-			}
-		}
-		if topicRecordCount > 0 {
-			getOrRegisterTopicMeter("record-send-rate", topic, metricRegistry).Mark(topicRecordCount)
-			getOrRegisterTopicHistogram("records-per-request", topic, metricRegistry).Update(topicRecordCount)
-			totalRecordCount += topicRecordCount
-		}
-	}
-	if totalRecordCount > 0 {
-		metrics.GetOrRegisterMeter("record-send-rate", metricRegistry).Mark(totalRecordCount)
-		getOrRegisterHistogram("records-per-request", metricRegistry).Update(totalRecordCount)
-	}
-
-	return nil
-}
-
-func (r *ProduceRequest) decode(pd packetDecoder, version int16) error {
-	r.Version = version
-
-	if version >= 3 {
-		id, err := pd.getNullableString()
-		if err != nil {
-			return err
-		}
-		r.TransactionalID = id
-	}
-	requiredAcks, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	r.RequiredAcks = RequiredAcks(requiredAcks)
-	if r.Timeout, err = pd.getInt32(); err != nil {
-		return err
-	}
-	topicCount, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if topicCount == 0 {
-		return nil
-	}
-
-	r.records = make(map[string]map[int32]Records)
-	for i := 0; i < topicCount; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		partitionCount, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-		r.records[topic] = make(map[int32]Records)
-
-		for j := 0; j < partitionCount; j++ {
-			partition, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-			size, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-			recordsDecoder, err := pd.getSubset(int(size))
-			if err != nil {
-				return err
-			}
-			var records Records
-			if err := records.decode(recordsDecoder); err != nil {
-				return err
-			}
-			r.records[topic][partition] = records
-		}
-	}
-
-	return nil
-}
-
-func (r *ProduceRequest) key() int16 {
-	return 0
-}
-
-func (r *ProduceRequest) version() int16 {
-	return r.Version
-}
-
-func (r *ProduceRequest) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_9_0_0
-	case 2:
-		return V0_10_0_0
-	case 3:
-		return V0_11_0_0
-	default:
-		return MinVersion
-	}
-}
-
-func (r *ProduceRequest) ensureRecords(topic string, partition int32) {
-	if r.records == nil {
-		r.records = make(map[string]map[int32]Records)
-	}
-
-	if r.records[topic] == nil {
-		r.records[topic] = make(map[int32]Records)
-	}
-}
-
-func (r *ProduceRequest) AddMessage(topic string, partition int32, msg *Message) {
-	r.ensureRecords(topic, partition)
-	set := r.records[topic][partition].MsgSet
-
-	if set == nil {
-		set = new(MessageSet)
-		r.records[topic][partition] = newLegacyRecords(set)
-	}
-
-	set.addMessage(msg)
-}
-
-func (r *ProduceRequest) AddSet(topic string, partition int32, set *MessageSet) {
-	r.ensureRecords(topic, partition)
-	r.records[topic][partition] = newLegacyRecords(set)
-}
-
-func (r *ProduceRequest) AddBatch(topic string, partition int32, batch *RecordBatch) {
-	r.ensureRecords(topic, partition)
-	r.records[topic][partition] = newDefaultRecords(batch)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/produce_response.go b/vendor/gopkg.in/Shopify/sarama.v1/produce_response.go
deleted file mode 100644
index 4c5cd35..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/produce_response.go
+++ /dev/null
@@ -1,189 +0,0 @@
-package sarama
-
-import (
-	"fmt"
-	"time"
-)
-
-type ProduceResponseBlock struct {
-	Err    KError
-	Offset int64
-	// only provided if Version >= 2 and the broker is configured with `LogAppendTime`
-	Timestamp time.Time
-}
-
-func (b *ProduceResponseBlock) decode(pd packetDecoder, version int16) (err error) {
-	tmp, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	b.Err = KError(tmp)
-
-	b.Offset, err = pd.getInt64()
-	if err != nil {
-		return err
-	}
-
-	if version >= 2 {
-		if millis, err := pd.getInt64(); err != nil {
-			return err
-		} else if millis != -1 {
-			b.Timestamp = time.Unix(millis/1000, (millis%1000)*int64(time.Millisecond))
-		}
-	}
-
-	return nil
-}
-
-func (b *ProduceResponseBlock) encode(pe packetEncoder, version int16) (err error) {
-	pe.putInt16(int16(b.Err))
-	pe.putInt64(b.Offset)
-
-	if version >= 2 {
-		timestamp := int64(-1)
-		if !b.Timestamp.Before(time.Unix(0, 0)) {
-			timestamp = b.Timestamp.UnixNano() / int64(time.Millisecond)
-		} else if !b.Timestamp.IsZero() {
-			return PacketEncodingError{fmt.Sprintf("invalid timestamp (%v)", b.Timestamp)}
-		}
-		pe.putInt64(timestamp)
-	}
-
-	return nil
-}
-
-type ProduceResponse struct {
-	Blocks       map[string]map[int32]*ProduceResponseBlock
-	Version      int16
-	ThrottleTime time.Duration // only provided if Version >= 1
-}
-
-func (r *ProduceResponse) decode(pd packetDecoder, version int16) (err error) {
-	r.Version = version
-
-	numTopics, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	r.Blocks = make(map[string]map[int32]*ProduceResponseBlock, numTopics)
-	for i := 0; i < numTopics; i++ {
-		name, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		numBlocks, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-
-		r.Blocks[name] = make(map[int32]*ProduceResponseBlock, numBlocks)
-
-		for j := 0; j < numBlocks; j++ {
-			id, err := pd.getInt32()
-			if err != nil {
-				return err
-			}
-
-			block := new(ProduceResponseBlock)
-			err = block.decode(pd, version)
-			if err != nil {
-				return err
-			}
-			r.Blocks[name][id] = block
-		}
-	}
-
-	if r.Version >= 1 {
-		millis, err := pd.getInt32()
-		if err != nil {
-			return err
-		}
-
-		r.ThrottleTime = time.Duration(millis) * time.Millisecond
-	}
-
-	return nil
-}
-
-func (r *ProduceResponse) encode(pe packetEncoder) error {
-	err := pe.putArrayLength(len(r.Blocks))
-	if err != nil {
-		return err
-	}
-	for topic, partitions := range r.Blocks {
-		err = pe.putString(topic)
-		if err != nil {
-			return err
-		}
-		err = pe.putArrayLength(len(partitions))
-		if err != nil {
-			return err
-		}
-		for id, prb := range partitions {
-			pe.putInt32(id)
-			err = prb.encode(pe, r.Version)
-			if err != nil {
-				return err
-			}
-		}
-	}
-	if r.Version >= 1 {
-		pe.putInt32(int32(r.ThrottleTime / time.Millisecond))
-	}
-	return nil
-}
-
-func (r *ProduceResponse) key() int16 {
-	return 0
-}
-
-func (r *ProduceResponse) version() int16 {
-	return r.Version
-}
-
-func (r *ProduceResponse) requiredVersion() KafkaVersion {
-	switch r.Version {
-	case 1:
-		return V0_9_0_0
-	case 2:
-		return V0_10_0_0
-	case 3:
-		return V0_11_0_0
-	default:
-		return MinVersion
-	}
-}
-
-func (r *ProduceResponse) GetBlock(topic string, partition int32) *ProduceResponseBlock {
-	if r.Blocks == nil {
-		return nil
-	}
-
-	if r.Blocks[topic] == nil {
-		return nil
-	}
-
-	return r.Blocks[topic][partition]
-}
-
-// Testing API
-
-func (r *ProduceResponse) AddTopicPartition(topic string, partition int32, err KError) {
-	if r.Blocks == nil {
-		r.Blocks = make(map[string]map[int32]*ProduceResponseBlock)
-	}
-	byTopic, ok := r.Blocks[topic]
-	if !ok {
-		byTopic = make(map[int32]*ProduceResponseBlock)
-		r.Blocks[topic] = byTopic
-	}
-	block := &ProduceResponseBlock{
-		Err: err,
-	}
-	if r.Version >= 2 {
-		block.Timestamp = time.Now()
-	}
-	byTopic[partition] = block
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/produce_set.go b/vendor/gopkg.in/Shopify/sarama.v1/produce_set.go
deleted file mode 100644
index 4b42d9c..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/produce_set.go
+++ /dev/null
@@ -1,258 +0,0 @@
-package sarama
-
-import (
-	"encoding/binary"
-	"errors"
-	"time"
-)
-
-type partitionSet struct {
-	msgs          []*ProducerMessage
-	recordsToSend Records
-	bufferBytes   int
-}
-
-type produceSet struct {
-	parent *asyncProducer
-	msgs   map[string]map[int32]*partitionSet
-
-	bufferBytes int
-	bufferCount int
-}
-
-func newProduceSet(parent *asyncProducer) *produceSet {
-	return &produceSet{
-		msgs:   make(map[string]map[int32]*partitionSet),
-		parent: parent,
-	}
-}
-
-func (ps *produceSet) add(msg *ProducerMessage) error {
-	var err error
-	var key, val []byte
-
-	if msg.Key != nil {
-		if key, err = msg.Key.Encode(); err != nil {
-			return err
-		}
-	}
-
-	if msg.Value != nil {
-		if val, err = msg.Value.Encode(); err != nil {
-			return err
-		}
-	}
-
-	timestamp := msg.Timestamp
-	if msg.Timestamp.IsZero() {
-		timestamp = time.Now()
-	}
-
-	partitions := ps.msgs[msg.Topic]
-	if partitions == nil {
-		partitions = make(map[int32]*partitionSet)
-		ps.msgs[msg.Topic] = partitions
-	}
-
-	var size int
-
-	set := partitions[msg.Partition]
-	if set == nil {
-		if ps.parent.conf.Version.IsAtLeast(V0_11_0_0) {
-			batch := &RecordBatch{
-				FirstTimestamp:   timestamp,
-				Version:          2,
-				Codec:            ps.parent.conf.Producer.Compression,
-				CompressionLevel: ps.parent.conf.Producer.CompressionLevel,
-				ProducerID:       ps.parent.txnmgr.producerID,
-				ProducerEpoch:    ps.parent.txnmgr.producerEpoch,
-			}
-			if ps.parent.conf.Producer.Idempotent {
-				batch.FirstSequence = msg.sequenceNumber
-			}
-			set = &partitionSet{recordsToSend: newDefaultRecords(batch)}
-			size = recordBatchOverhead
-		} else {
-			set = &partitionSet{recordsToSend: newLegacyRecords(new(MessageSet))}
-		}
-		partitions[msg.Partition] = set
-	}
-	set.msgs = append(set.msgs, msg)
-
-	if ps.parent.conf.Version.IsAtLeast(V0_11_0_0) {
-		if ps.parent.conf.Producer.Idempotent && msg.sequenceNumber < set.recordsToSend.RecordBatch.FirstSequence {
-			return errors.New("Assertion failed: Message out of sequence added to a batch")
-		}
-		// We are being conservative here to avoid having to prep encode the record
-		size += maximumRecordOverhead
-		rec := &Record{
-			Key:            key,
-			Value:          val,
-			TimestampDelta: timestamp.Sub(set.recordsToSend.RecordBatch.FirstTimestamp),
-		}
-		size += len(key) + len(val)
-		if len(msg.Headers) > 0 {
-			rec.Headers = make([]*RecordHeader, len(msg.Headers))
-			for i := range msg.Headers {
-				rec.Headers[i] = &msg.Headers[i]
-				size += len(rec.Headers[i].Key) + len(rec.Headers[i].Value) + 2*binary.MaxVarintLen32
-			}
-		}
-		set.recordsToSend.RecordBatch.addRecord(rec)
-	} else {
-		msgToSend := &Message{Codec: CompressionNone, Key: key, Value: val}
-		if ps.parent.conf.Version.IsAtLeast(V0_10_0_0) {
-			msgToSend.Timestamp = timestamp
-			msgToSend.Version = 1
-		}
-		set.recordsToSend.MsgSet.addMessage(msgToSend)
-		size = producerMessageOverhead + len(key) + len(val)
-	}
-
-	set.bufferBytes += size
-	ps.bufferBytes += size
-	ps.bufferCount++
-
-	return nil
-}
-
-func (ps *produceSet) buildRequest() *ProduceRequest {
-	req := &ProduceRequest{
-		RequiredAcks: ps.parent.conf.Producer.RequiredAcks,
-		Timeout:      int32(ps.parent.conf.Producer.Timeout / time.Millisecond),
-	}
-	if ps.parent.conf.Version.IsAtLeast(V0_10_0_0) {
-		req.Version = 2
-	}
-	if ps.parent.conf.Version.IsAtLeast(V0_11_0_0) {
-		req.Version = 3
-	}
-
-	for topic, partitionSets := range ps.msgs {
-		for partition, set := range partitionSets {
-			if req.Version >= 3 {
-				// If the API version we're hitting is 3 or greater, we need to calculate
-				// offsets for each record in the batch relative to FirstOffset.
-				// Additionally, we must set LastOffsetDelta to the value of the last offset
-				// in the batch. Since the OffsetDelta of the first record is 0, we know that the
-				// final record of any batch will have an offset of (# of records in batch) - 1.
-				// (See https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol#AGuideToTheKafkaProtocol-Messagesets
-				//  under the RecordBatch section for details.)
-				rb := set.recordsToSend.RecordBatch
-				if len(rb.Records) > 0 {
-					rb.LastOffsetDelta = int32(len(rb.Records) - 1)
-					for i, record := range rb.Records {
-						record.OffsetDelta = int64(i)
-					}
-				}
-				req.AddBatch(topic, partition, rb)
-				continue
-			}
-			if ps.parent.conf.Producer.Compression == CompressionNone {
-				req.AddSet(topic, partition, set.recordsToSend.MsgSet)
-			} else {
-				// When compression is enabled, the entire set for each partition is compressed
-				// and sent as the payload of a single fake "message" with the appropriate codec
-				// set and no key. When the server sees a message with a compression codec, it
-				// decompresses the payload and treats the result as its message set.
-
-				if ps.parent.conf.Version.IsAtLeast(V0_10_0_0) {
-					// If our version is 0.10 or later, assign relative offsets
-					// to the inner messages. This lets the broker avoid
-					// recompressing the message set.
-					// (See https://cwiki.apache.org/confluence/display/KAFKA/KIP-31+-+Move+to+relative+offsets+in+compressed+message+sets
-					// for details on relative offsets.)
-					for i, msg := range set.recordsToSend.MsgSet.Messages {
-						msg.Offset = int64(i)
-					}
-				}
-				payload, err := encode(set.recordsToSend.MsgSet, ps.parent.conf.MetricRegistry)
-				if err != nil {
-					Logger.Println(err) // if this happens, it's basically our fault.
-					panic(err)
-				}
-				compMsg := &Message{
-					Codec:            ps.parent.conf.Producer.Compression,
-					CompressionLevel: ps.parent.conf.Producer.CompressionLevel,
-					Key:              nil,
-					Value:            payload,
-					Set:              set.recordsToSend.MsgSet, // Provide the underlying message set for accurate metrics
-				}
-				if ps.parent.conf.Version.IsAtLeast(V0_10_0_0) {
-					compMsg.Version = 1
-					compMsg.Timestamp = set.recordsToSend.MsgSet.Messages[0].Msg.Timestamp
-				}
-				req.AddMessage(topic, partition, compMsg)
-			}
-		}
-	}
-
-	return req
-}
-
-func (ps *produceSet) eachPartition(cb func(topic string, partition int32, pSet *partitionSet)) {
-	for topic, partitionSet := range ps.msgs {
-		for partition, set := range partitionSet {
-			cb(topic, partition, set)
-		}
-	}
-}
-
-func (ps *produceSet) dropPartition(topic string, partition int32) []*ProducerMessage {
-	if ps.msgs[topic] == nil {
-		return nil
-	}
-	set := ps.msgs[topic][partition]
-	if set == nil {
-		return nil
-	}
-	ps.bufferBytes -= set.bufferBytes
-	ps.bufferCount -= len(set.msgs)
-	delete(ps.msgs[topic], partition)
-	return set.msgs
-}
-
-func (ps *produceSet) wouldOverflow(msg *ProducerMessage) bool {
-	version := 1
-	if ps.parent.conf.Version.IsAtLeast(V0_11_0_0) {
-		version = 2
-	}
-
-	switch {
-	// Would we overflow our maximum possible size-on-the-wire? 10KiB is arbitrary overhead for safety.
-	case ps.bufferBytes+msg.byteSize(version) >= int(MaxRequestSize-(10*1024)):
-		return true
-	// Would we overflow the size-limit of a message-batch for this partition?
-	case ps.msgs[msg.Topic] != nil && ps.msgs[msg.Topic][msg.Partition] != nil &&
-		ps.msgs[msg.Topic][msg.Partition].bufferBytes+msg.byteSize(version) >= ps.parent.conf.Producer.MaxMessageBytes:
-		return true
-	// Would we overflow simply in number of messages?
-	case ps.parent.conf.Producer.Flush.MaxMessages > 0 && ps.bufferCount >= ps.parent.conf.Producer.Flush.MaxMessages:
-		return true
-	default:
-		return false
-	}
-}
-
-func (ps *produceSet) readyToFlush() bool {
-	switch {
-	// If we don't have any messages, nothing else matters
-	case ps.empty():
-		return false
-	// If all three config values are 0, we always flush as-fast-as-possible
-	case ps.parent.conf.Producer.Flush.Frequency == 0 && ps.parent.conf.Producer.Flush.Bytes == 0 && ps.parent.conf.Producer.Flush.Messages == 0:
-		return true
-	// If we've passed the message trigger-point
-	case ps.parent.conf.Producer.Flush.Messages > 0 && ps.bufferCount >= ps.parent.conf.Producer.Flush.Messages:
-		return true
-	// If we've passed the byte trigger-point
-	case ps.parent.conf.Producer.Flush.Bytes > 0 && ps.bufferBytes >= ps.parent.conf.Producer.Flush.Bytes:
-		return true
-	default:
-		return false
-	}
-}
-
-func (ps *produceSet) empty() bool {
-	return ps.bufferCount == 0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/real_decoder.go b/vendor/gopkg.in/Shopify/sarama.v1/real_decoder.go
deleted file mode 100644
index 23045e7..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/real_decoder.go
+++ /dev/null
@@ -1,324 +0,0 @@
-package sarama
-
-import (
-	"encoding/binary"
-	"math"
-)
-
-var errInvalidArrayLength = PacketDecodingError{"invalid array length"}
-var errInvalidByteSliceLength = PacketDecodingError{"invalid byteslice length"}
-var errInvalidByteSliceLengthType = PacketDecodingError{"invalid byteslice length type"}
-var errInvalidStringLength = PacketDecodingError{"invalid string length"}
-var errInvalidSubsetSize = PacketDecodingError{"invalid subset size"}
-var errVarintOverflow = PacketDecodingError{"varint overflow"}
-var errInvalidBool = PacketDecodingError{"invalid bool"}
-
-type realDecoder struct {
-	raw   []byte
-	off   int
-	stack []pushDecoder
-}
-
-// primitives
-
-func (rd *realDecoder) getInt8() (int8, error) {
-	if rd.remaining() < 1 {
-		rd.off = len(rd.raw)
-		return -1, ErrInsufficientData
-	}
-	tmp := int8(rd.raw[rd.off])
-	rd.off++
-	return tmp, nil
-}
-
-func (rd *realDecoder) getInt16() (int16, error) {
-	if rd.remaining() < 2 {
-		rd.off = len(rd.raw)
-		return -1, ErrInsufficientData
-	}
-	tmp := int16(binary.BigEndian.Uint16(rd.raw[rd.off:]))
-	rd.off += 2
-	return tmp, nil
-}
-
-func (rd *realDecoder) getInt32() (int32, error) {
-	if rd.remaining() < 4 {
-		rd.off = len(rd.raw)
-		return -1, ErrInsufficientData
-	}
-	tmp := int32(binary.BigEndian.Uint32(rd.raw[rd.off:]))
-	rd.off += 4
-	return tmp, nil
-}
-
-func (rd *realDecoder) getInt64() (int64, error) {
-	if rd.remaining() < 8 {
-		rd.off = len(rd.raw)
-		return -1, ErrInsufficientData
-	}
-	tmp := int64(binary.BigEndian.Uint64(rd.raw[rd.off:]))
-	rd.off += 8
-	return tmp, nil
-}
-
-func (rd *realDecoder) getVarint() (int64, error) {
-	tmp, n := binary.Varint(rd.raw[rd.off:])
-	if n == 0 {
-		rd.off = len(rd.raw)
-		return -1, ErrInsufficientData
-	}
-	if n < 0 {
-		rd.off -= n
-		return -1, errVarintOverflow
-	}
-	rd.off += n
-	return tmp, nil
-}
-
-func (rd *realDecoder) getArrayLength() (int, error) {
-	if rd.remaining() < 4 {
-		rd.off = len(rd.raw)
-		return -1, ErrInsufficientData
-	}
-	tmp := int(int32(binary.BigEndian.Uint32(rd.raw[rd.off:])))
-	rd.off += 4
-	if tmp > rd.remaining() {
-		rd.off = len(rd.raw)
-		return -1, ErrInsufficientData
-	} else if tmp > 2*math.MaxUint16 {
-		return -1, errInvalidArrayLength
-	}
-	return tmp, nil
-}
-
-func (rd *realDecoder) getBool() (bool, error) {
-	b, err := rd.getInt8()
-	if err != nil || b == 0 {
-		return false, err
-	}
-	if b != 1 {
-		return false, errInvalidBool
-	}
-	return true, nil
-}
-
-// collections
-
-func (rd *realDecoder) getBytes() ([]byte, error) {
-	tmp, err := rd.getInt32()
-	if err != nil {
-		return nil, err
-	}
-	if tmp == -1 {
-		return nil, nil
-	}
-
-	return rd.getRawBytes(int(tmp))
-}
-
-func (rd *realDecoder) getVarintBytes() ([]byte, error) {
-	tmp, err := rd.getVarint()
-	if err != nil {
-		return nil, err
-	}
-	if tmp == -1 {
-		return nil, nil
-	}
-
-	return rd.getRawBytes(int(tmp))
-}
-
-func (rd *realDecoder) getStringLength() (int, error) {
-	length, err := rd.getInt16()
-	if err != nil {
-		return 0, err
-	}
-
-	n := int(length)
-
-	switch {
-	case n < -1:
-		return 0, errInvalidStringLength
-	case n > rd.remaining():
-		rd.off = len(rd.raw)
-		return 0, ErrInsufficientData
-	}
-
-	return n, nil
-}
-
-func (rd *realDecoder) getString() (string, error) {
-	n, err := rd.getStringLength()
-	if err != nil || n == -1 {
-		return "", err
-	}
-
-	tmpStr := string(rd.raw[rd.off : rd.off+n])
-	rd.off += n
-	return tmpStr, nil
-}
-
-func (rd *realDecoder) getNullableString() (*string, error) {
-	n, err := rd.getStringLength()
-	if err != nil || n == -1 {
-		return nil, err
-	}
-
-	tmpStr := string(rd.raw[rd.off : rd.off+n])
-	rd.off += n
-	return &tmpStr, err
-}
-
-func (rd *realDecoder) getInt32Array() ([]int32, error) {
-	if rd.remaining() < 4 {
-		rd.off = len(rd.raw)
-		return nil, ErrInsufficientData
-	}
-	n := int(binary.BigEndian.Uint32(rd.raw[rd.off:]))
-	rd.off += 4
-
-	if rd.remaining() < 4*n {
-		rd.off = len(rd.raw)
-		return nil, ErrInsufficientData
-	}
-
-	if n == 0 {
-		return nil, nil
-	}
-
-	if n < 0 {
-		return nil, errInvalidArrayLength
-	}
-
-	ret := make([]int32, n)
-	for i := range ret {
-		ret[i] = int32(binary.BigEndian.Uint32(rd.raw[rd.off:]))
-		rd.off += 4
-	}
-	return ret, nil
-}
-
-func (rd *realDecoder) getInt64Array() ([]int64, error) {
-	if rd.remaining() < 4 {
-		rd.off = len(rd.raw)
-		return nil, ErrInsufficientData
-	}
-	n := int(binary.BigEndian.Uint32(rd.raw[rd.off:]))
-	rd.off += 4
-
-	if rd.remaining() < 8*n {
-		rd.off = len(rd.raw)
-		return nil, ErrInsufficientData
-	}
-
-	if n == 0 {
-		return nil, nil
-	}
-
-	if n < 0 {
-		return nil, errInvalidArrayLength
-	}
-
-	ret := make([]int64, n)
-	for i := range ret {
-		ret[i] = int64(binary.BigEndian.Uint64(rd.raw[rd.off:]))
-		rd.off += 8
-	}
-	return ret, nil
-}
-
-func (rd *realDecoder) getStringArray() ([]string, error) {
-	if rd.remaining() < 4 {
-		rd.off = len(rd.raw)
-		return nil, ErrInsufficientData
-	}
-	n := int(binary.BigEndian.Uint32(rd.raw[rd.off:]))
-	rd.off += 4
-
-	if n == 0 {
-		return nil, nil
-	}
-
-	if n < 0 {
-		return nil, errInvalidArrayLength
-	}
-
-	ret := make([]string, n)
-	for i := range ret {
-		str, err := rd.getString()
-		if err != nil {
-			return nil, err
-		}
-
-		ret[i] = str
-	}
-	return ret, nil
-}
-
-// subsets
-
-func (rd *realDecoder) remaining() int {
-	return len(rd.raw) - rd.off
-}
-
-func (rd *realDecoder) getSubset(length int) (packetDecoder, error) {
-	buf, err := rd.getRawBytes(length)
-	if err != nil {
-		return nil, err
-	}
-	return &realDecoder{raw: buf}, nil
-}
-
-func (rd *realDecoder) getRawBytes(length int) ([]byte, error) {
-	if length < 0 {
-		return nil, errInvalidByteSliceLength
-	} else if length > rd.remaining() {
-		rd.off = len(rd.raw)
-		return nil, ErrInsufficientData
-	}
-
-	start := rd.off
-	rd.off += length
-	return rd.raw[start:rd.off], nil
-}
-
-func (rd *realDecoder) peek(offset, length int) (packetDecoder, error) {
-	if rd.remaining() < offset+length {
-		return nil, ErrInsufficientData
-	}
-	off := rd.off + offset
-	return &realDecoder{raw: rd.raw[off : off+length]}, nil
-}
-
-// stacks
-
-func (rd *realDecoder) push(in pushDecoder) error {
-	in.saveOffset(rd.off)
-
-	var reserve int
-	if dpd, ok := in.(dynamicPushDecoder); ok {
-		if err := dpd.decode(rd); err != nil {
-			return err
-		}
-	} else {
-		reserve = in.reserveLength()
-		if rd.remaining() < reserve {
-			rd.off = len(rd.raw)
-			return ErrInsufficientData
-		}
-	}
-
-	rd.stack = append(rd.stack, in)
-
-	rd.off += reserve
-
-	return nil
-}
-
-func (rd *realDecoder) pop() error {
-	// this is go's ugly pop pattern (the inverse of append)
-	in := rd.stack[len(rd.stack)-1]
-	rd.stack = rd.stack[:len(rd.stack)-1]
-
-	return in.check(rd.off, rd.raw)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/real_encoder.go b/vendor/gopkg.in/Shopify/sarama.v1/real_encoder.go
deleted file mode 100644
index 3c75387..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/real_encoder.go
+++ /dev/null
@@ -1,156 +0,0 @@
-package sarama
-
-import (
-	"encoding/binary"
-
-	"github.com/rcrowley/go-metrics"
-)
-
-type realEncoder struct {
-	raw      []byte
-	off      int
-	stack    []pushEncoder
-	registry metrics.Registry
-}
-
-// primitives
-
-func (re *realEncoder) putInt8(in int8) {
-	re.raw[re.off] = byte(in)
-	re.off++
-}
-
-func (re *realEncoder) putInt16(in int16) {
-	binary.BigEndian.PutUint16(re.raw[re.off:], uint16(in))
-	re.off += 2
-}
-
-func (re *realEncoder) putInt32(in int32) {
-	binary.BigEndian.PutUint32(re.raw[re.off:], uint32(in))
-	re.off += 4
-}
-
-func (re *realEncoder) putInt64(in int64) {
-	binary.BigEndian.PutUint64(re.raw[re.off:], uint64(in))
-	re.off += 8
-}
-
-func (re *realEncoder) putVarint(in int64) {
-	re.off += binary.PutVarint(re.raw[re.off:], in)
-}
-
-func (re *realEncoder) putArrayLength(in int) error {
-	re.putInt32(int32(in))
-	return nil
-}
-
-func (re *realEncoder) putBool(in bool) {
-	if in {
-		re.putInt8(1)
-		return
-	}
-	re.putInt8(0)
-}
-
-// collection
-
-func (re *realEncoder) putRawBytes(in []byte) error {
-	copy(re.raw[re.off:], in)
-	re.off += len(in)
-	return nil
-}
-
-func (re *realEncoder) putBytes(in []byte) error {
-	if in == nil {
-		re.putInt32(-1)
-		return nil
-	}
-	re.putInt32(int32(len(in)))
-	return re.putRawBytes(in)
-}
-
-func (re *realEncoder) putVarintBytes(in []byte) error {
-	if in == nil {
-		re.putVarint(-1)
-		return nil
-	}
-	re.putVarint(int64(len(in)))
-	return re.putRawBytes(in)
-}
-
-func (re *realEncoder) putString(in string) error {
-	re.putInt16(int16(len(in)))
-	copy(re.raw[re.off:], in)
-	re.off += len(in)
-	return nil
-}
-
-func (re *realEncoder) putNullableString(in *string) error {
-	if in == nil {
-		re.putInt16(-1)
-		return nil
-	}
-	return re.putString(*in)
-}
-
-func (re *realEncoder) putStringArray(in []string) error {
-	err := re.putArrayLength(len(in))
-	if err != nil {
-		return err
-	}
-
-	for _, val := range in {
-		if err := re.putString(val); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (re *realEncoder) putInt32Array(in []int32) error {
-	err := re.putArrayLength(len(in))
-	if err != nil {
-		return err
-	}
-	for _, val := range in {
-		re.putInt32(val)
-	}
-	return nil
-}
-
-func (re *realEncoder) putInt64Array(in []int64) error {
-	err := re.putArrayLength(len(in))
-	if err != nil {
-		return err
-	}
-	for _, val := range in {
-		re.putInt64(val)
-	}
-	return nil
-}
-
-func (re *realEncoder) offset() int {
-	return re.off
-}
-
-// stacks
-
-func (re *realEncoder) push(in pushEncoder) {
-	in.saveOffset(re.off)
-	re.off += in.reserveLength()
-	re.stack = append(re.stack, in)
-}
-
-func (re *realEncoder) pop() error {
-	// this is go's ugly pop pattern (the inverse of append)
-	in := re.stack[len(re.stack)-1]
-	re.stack = re.stack[:len(re.stack)-1]
-
-	return in.run(re.off, re.raw)
-}
-
-// we do record metrics during the real encoder pass
-func (re *realEncoder) metricRegistry() metrics.Registry {
-	return re.registry
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/record.go b/vendor/gopkg.in/Shopify/sarama.v1/record.go
deleted file mode 100644
index cded308..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/record.go
+++ /dev/null
@@ -1,113 +0,0 @@
-package sarama
-
-import (
-	"encoding/binary"
-	"time"
-)
-
-const (
-	controlMask           = 0x20
-	maximumRecordOverhead = 5*binary.MaxVarintLen32 + binary.MaxVarintLen64 + 1
-)
-
-type RecordHeader struct {
-	Key   []byte
-	Value []byte
-}
-
-func (h *RecordHeader) encode(pe packetEncoder) error {
-	if err := pe.putVarintBytes(h.Key); err != nil {
-		return err
-	}
-	return pe.putVarintBytes(h.Value)
-}
-
-func (h *RecordHeader) decode(pd packetDecoder) (err error) {
-	if h.Key, err = pd.getVarintBytes(); err != nil {
-		return err
-	}
-
-	if h.Value, err = pd.getVarintBytes(); err != nil {
-		return err
-	}
-	return nil
-}
-
-type Record struct {
-	Attributes     int8
-	TimestampDelta time.Duration
-	OffsetDelta    int64
-	Key            []byte
-	Value          []byte
-	Headers        []*RecordHeader
-
-	length varintLengthField
-}
-
-func (r *Record) encode(pe packetEncoder) error {
-	pe.push(&r.length)
-	pe.putInt8(r.Attributes)
-	pe.putVarint(int64(r.TimestampDelta / time.Millisecond))
-	pe.putVarint(r.OffsetDelta)
-	if err := pe.putVarintBytes(r.Key); err != nil {
-		return err
-	}
-	if err := pe.putVarintBytes(r.Value); err != nil {
-		return err
-	}
-	pe.putVarint(int64(len(r.Headers)))
-
-	for _, h := range r.Headers {
-		if err := h.encode(pe); err != nil {
-			return err
-		}
-	}
-
-	return pe.pop()
-}
-
-func (r *Record) decode(pd packetDecoder) (err error) {
-	if err = pd.push(&r.length); err != nil {
-		return err
-	}
-
-	if r.Attributes, err = pd.getInt8(); err != nil {
-		return err
-	}
-
-	timestamp, err := pd.getVarint()
-	if err != nil {
-		return err
-	}
-	r.TimestampDelta = time.Duration(timestamp) * time.Millisecond
-
-	if r.OffsetDelta, err = pd.getVarint(); err != nil {
-		return err
-	}
-
-	if r.Key, err = pd.getVarintBytes(); err != nil {
-		return err
-	}
-
-	if r.Value, err = pd.getVarintBytes(); err != nil {
-		return err
-	}
-
-	numHeaders, err := pd.getVarint()
-	if err != nil {
-		return err
-	}
-
-	if numHeaders >= 0 {
-		r.Headers = make([]*RecordHeader, numHeaders)
-	}
-	for i := int64(0); i < numHeaders; i++ {
-		hdr := new(RecordHeader)
-		if err := hdr.decode(pd); err != nil {
-			return err
-		}
-		r.Headers[i] = hdr
-	}
-
-	return pd.pop()
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/record_batch.go b/vendor/gopkg.in/Shopify/sarama.v1/record_batch.go
deleted file mode 100644
index a36f7e6..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/record_batch.go
+++ /dev/null
@@ -1,213 +0,0 @@
-package sarama
-
-import (
-	"fmt"
-	"time"
-)
-
-const recordBatchOverhead = 49
-
-type recordsArray []*Record
-
-func (e recordsArray) encode(pe packetEncoder) error {
-	for _, r := range e {
-		if err := r.encode(pe); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (e recordsArray) decode(pd packetDecoder) error {
-	for i := range e {
-		rec := &Record{}
-		if err := rec.decode(pd); err != nil {
-			return err
-		}
-		e[i] = rec
-	}
-	return nil
-}
-
-type RecordBatch struct {
-	FirstOffset           int64
-	PartitionLeaderEpoch  int32
-	Version               int8
-	Codec                 CompressionCodec
-	CompressionLevel      int
-	Control               bool
-	LogAppendTime         bool
-	LastOffsetDelta       int32
-	FirstTimestamp        time.Time
-	MaxTimestamp          time.Time
-	ProducerID            int64
-	ProducerEpoch         int16
-	FirstSequence         int32
-	Records               []*Record
-	PartialTrailingRecord bool
-
-	compressedRecords []byte
-	recordsLen        int // uncompressed records size
-}
-
-func (b *RecordBatch) encode(pe packetEncoder) error {
-	if b.Version != 2 {
-		return PacketEncodingError{fmt.Sprintf("unsupported compression codec (%d)", b.Codec)}
-	}
-	pe.putInt64(b.FirstOffset)
-	pe.push(&lengthField{})
-	pe.putInt32(b.PartitionLeaderEpoch)
-	pe.putInt8(b.Version)
-	pe.push(newCRC32Field(crcCastagnoli))
-	pe.putInt16(b.computeAttributes())
-	pe.putInt32(b.LastOffsetDelta)
-
-	if err := (Timestamp{&b.FirstTimestamp}).encode(pe); err != nil {
-		return err
-	}
-
-	if err := (Timestamp{&b.MaxTimestamp}).encode(pe); err != nil {
-		return err
-	}
-
-	pe.putInt64(b.ProducerID)
-	pe.putInt16(b.ProducerEpoch)
-	pe.putInt32(b.FirstSequence)
-
-	if err := pe.putArrayLength(len(b.Records)); err != nil {
-		return err
-	}
-
-	if b.compressedRecords == nil {
-		if err := b.encodeRecords(pe); err != nil {
-			return err
-		}
-	}
-	if err := pe.putRawBytes(b.compressedRecords); err != nil {
-		return err
-	}
-
-	if err := pe.pop(); err != nil {
-		return err
-	}
-	return pe.pop()
-}
-
-func (b *RecordBatch) decode(pd packetDecoder) (err error) {
-	if b.FirstOffset, err = pd.getInt64(); err != nil {
-		return err
-	}
-
-	batchLen, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-
-	if b.PartitionLeaderEpoch, err = pd.getInt32(); err != nil {
-		return err
-	}
-
-	if b.Version, err = pd.getInt8(); err != nil {
-		return err
-	}
-
-	if err = pd.push(&crc32Field{polynomial: crcCastagnoli}); err != nil {
-		return err
-	}
-
-	attributes, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-	b.Codec = CompressionCodec(int8(attributes) & compressionCodecMask)
-	b.Control = attributes&controlMask == controlMask
-	b.LogAppendTime = attributes&timestampTypeMask == timestampTypeMask
-
-	if b.LastOffsetDelta, err = pd.getInt32(); err != nil {
-		return err
-	}
-
-	if err = (Timestamp{&b.FirstTimestamp}).decode(pd); err != nil {
-		return err
-	}
-
-	if err = (Timestamp{&b.MaxTimestamp}).decode(pd); err != nil {
-		return err
-	}
-
-	if b.ProducerID, err = pd.getInt64(); err != nil {
-		return err
-	}
-
-	if b.ProducerEpoch, err = pd.getInt16(); err != nil {
-		return err
-	}
-
-	if b.FirstSequence, err = pd.getInt32(); err != nil {
-		return err
-	}
-
-	numRecs, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if numRecs >= 0 {
-		b.Records = make([]*Record, numRecs)
-	}
-
-	bufSize := int(batchLen) - recordBatchOverhead
-	recBuffer, err := pd.getRawBytes(bufSize)
-	if err != nil {
-		if err == ErrInsufficientData {
-			b.PartialTrailingRecord = true
-			b.Records = nil
-			return nil
-		}
-		return err
-	}
-
-	if err = pd.pop(); err != nil {
-		return err
-	}
-
-	recBuffer, err = decompress(b.Codec, recBuffer)
-	if err != nil {
-		return err
-	}
-
-	b.recordsLen = len(recBuffer)
-	err = decode(recBuffer, recordsArray(b.Records))
-	if err == ErrInsufficientData {
-		b.PartialTrailingRecord = true
-		b.Records = nil
-		return nil
-	}
-	return err
-}
-
-func (b *RecordBatch) encodeRecords(pe packetEncoder) error {
-	var raw []byte
-	var err error
-	if raw, err = encode(recordsArray(b.Records), pe.metricRegistry()); err != nil {
-		return err
-	}
-	b.recordsLen = len(raw)
-
-	b.compressedRecords, err = compress(b.Codec, b.CompressionLevel, raw)
-	return err
-}
-
-func (b *RecordBatch) computeAttributes() int16 {
-	attr := int16(b.Codec) & int16(compressionCodecMask)
-	if b.Control {
-		attr |= controlMask
-	}
-	if b.LogAppendTime {
-		attr |= timestampTypeMask
-	}
-	return attr
-}
-
-func (b *RecordBatch) addRecord(r *Record) {
-	b.Records = append(b.Records, r)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/records.go b/vendor/gopkg.in/Shopify/sarama.v1/records.go
deleted file mode 100644
index 192f592..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/records.go
+++ /dev/null
@@ -1,194 +0,0 @@
-package sarama
-
-import "fmt"
-
-const (
-	unknownRecords = iota
-	legacyRecords
-	defaultRecords
-
-	magicOffset = 16
-	magicLength = 1
-)
-
-// Records implements a union type containing either a RecordBatch or a legacy MessageSet.
-type Records struct {
-	recordsType int
-	MsgSet      *MessageSet
-	RecordBatch *RecordBatch
-}
-
-func newLegacyRecords(msgSet *MessageSet) Records {
-	return Records{recordsType: legacyRecords, MsgSet: msgSet}
-}
-
-func newDefaultRecords(batch *RecordBatch) Records {
-	return Records{recordsType: defaultRecords, RecordBatch: batch}
-}
-
-// setTypeFromFields sets type of Records depending on which of MsgSet or RecordBatch is not nil.
-// The first return value indicates whether both fields are nil (and the type is not set).
-// If both fields are not nil, it returns an error.
-func (r *Records) setTypeFromFields() (bool, error) {
-	if r.MsgSet == nil && r.RecordBatch == nil {
-		return true, nil
-	}
-	if r.MsgSet != nil && r.RecordBatch != nil {
-		return false, fmt.Errorf("both MsgSet and RecordBatch are set, but record type is unknown")
-	}
-	r.recordsType = defaultRecords
-	if r.MsgSet != nil {
-		r.recordsType = legacyRecords
-	}
-	return false, nil
-}
-
-func (r *Records) encode(pe packetEncoder) error {
-	if r.recordsType == unknownRecords {
-		if empty, err := r.setTypeFromFields(); err != nil || empty {
-			return err
-		}
-	}
-
-	switch r.recordsType {
-	case legacyRecords:
-		if r.MsgSet == nil {
-			return nil
-		}
-		return r.MsgSet.encode(pe)
-	case defaultRecords:
-		if r.RecordBatch == nil {
-			return nil
-		}
-		return r.RecordBatch.encode(pe)
-	}
-
-	return fmt.Errorf("unknown records type: %v", r.recordsType)
-}
-
-func (r *Records) setTypeFromMagic(pd packetDecoder) error {
-	magic, err := magicValue(pd)
-	if err != nil {
-		return err
-	}
-
-	r.recordsType = defaultRecords
-	if magic < 2 {
-		r.recordsType = legacyRecords
-	}
-
-	return nil
-}
-
-func (r *Records) decode(pd packetDecoder) error {
-	if r.recordsType == unknownRecords {
-		if err := r.setTypeFromMagic(pd); err != nil {
-			return err
-		}
-	}
-
-	switch r.recordsType {
-	case legacyRecords:
-		r.MsgSet = &MessageSet{}
-		return r.MsgSet.decode(pd)
-	case defaultRecords:
-		r.RecordBatch = &RecordBatch{}
-		return r.RecordBatch.decode(pd)
-	}
-	return fmt.Errorf("unknown records type: %v", r.recordsType)
-}
-
-func (r *Records) numRecords() (int, error) {
-	if r.recordsType == unknownRecords {
-		if empty, err := r.setTypeFromFields(); err != nil || empty {
-			return 0, err
-		}
-	}
-
-	switch r.recordsType {
-	case legacyRecords:
-		if r.MsgSet == nil {
-			return 0, nil
-		}
-		return len(r.MsgSet.Messages), nil
-	case defaultRecords:
-		if r.RecordBatch == nil {
-			return 0, nil
-		}
-		return len(r.RecordBatch.Records), nil
-	}
-	return 0, fmt.Errorf("unknown records type: %v", r.recordsType)
-}
-
-func (r *Records) isPartial() (bool, error) {
-	if r.recordsType == unknownRecords {
-		if empty, err := r.setTypeFromFields(); err != nil || empty {
-			return false, err
-		}
-	}
-
-	switch r.recordsType {
-	case unknownRecords:
-		return false, nil
-	case legacyRecords:
-		if r.MsgSet == nil {
-			return false, nil
-		}
-		return r.MsgSet.PartialTrailingMessage, nil
-	case defaultRecords:
-		if r.RecordBatch == nil {
-			return false, nil
-		}
-		return r.RecordBatch.PartialTrailingRecord, nil
-	}
-	return false, fmt.Errorf("unknown records type: %v", r.recordsType)
-}
-
-func (r *Records) isControl() (bool, error) {
-	if r.recordsType == unknownRecords {
-		if empty, err := r.setTypeFromFields(); err != nil || empty {
-			return false, err
-		}
-	}
-
-	switch r.recordsType {
-	case legacyRecords:
-		return false, nil
-	case defaultRecords:
-		if r.RecordBatch == nil {
-			return false, nil
-		}
-		return r.RecordBatch.Control, nil
-	}
-	return false, fmt.Errorf("unknown records type: %v", r.recordsType)
-}
-
-func (r *Records) isOverflow() (bool, error) {
-	if r.recordsType == unknownRecords {
-		if empty, err := r.setTypeFromFields(); err != nil || empty {
-			return false, err
-		}
-	}
-
-	switch r.recordsType {
-	case unknownRecords:
-		return false, nil
-	case legacyRecords:
-		if r.MsgSet == nil {
-			return false, nil
-		}
-		return r.MsgSet.OverflowMessage, nil
-	case defaultRecords:
-		return false, nil
-	}
-	return false, fmt.Errorf("unknown records type: %v", r.recordsType)
-}
-
-func magicValue(pd packetDecoder) (int8, error) {
-	dec, err := pd.peek(magicOffset, magicLength)
-	if err != nil {
-		return 0, err
-	}
-
-	return dec.getInt8()
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/request.go b/vendor/gopkg.in/Shopify/sarama.v1/request.go
deleted file mode 100644
index f7eea59..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/request.go
+++ /dev/null
@@ -1,151 +0,0 @@
-package sarama
-
-import (
-	"encoding/binary"
-	"fmt"
-	"io"
-)
-
-type protocolBody interface {
-	encoder
-	versionedDecoder
-	key() int16
-	version() int16
-	requiredVersion() KafkaVersion
-}
-
-type request struct {
-	correlationID int32
-	clientID      string
-	body          protocolBody
-}
-
-func (r *request) encode(pe packetEncoder) (err error) {
-	pe.push(&lengthField{})
-	pe.putInt16(r.body.key())
-	pe.putInt16(r.body.version())
-	pe.putInt32(r.correlationID)
-	err = pe.putString(r.clientID)
-	if err != nil {
-		return err
-	}
-	err = r.body.encode(pe)
-	if err != nil {
-		return err
-	}
-	return pe.pop()
-}
-
-func (r *request) decode(pd packetDecoder) (err error) {
-	var key int16
-	if key, err = pd.getInt16(); err != nil {
-		return err
-	}
-	var version int16
-	if version, err = pd.getInt16(); err != nil {
-		return err
-	}
-	if r.correlationID, err = pd.getInt32(); err != nil {
-		return err
-	}
-	r.clientID, err = pd.getString()
-
-	r.body = allocateBody(key, version)
-	if r.body == nil {
-		return PacketDecodingError{fmt.Sprintf("unknown request key (%d)", key)}
-	}
-	return r.body.decode(pd, version)
-}
-
-func decodeRequest(r io.Reader) (req *request, bytesRead int, err error) {
-	lengthBytes := make([]byte, 4)
-	if _, err := io.ReadFull(r, lengthBytes); err != nil {
-		return nil, bytesRead, err
-	}
-	bytesRead += len(lengthBytes)
-
-	length := int32(binary.BigEndian.Uint32(lengthBytes))
-	if length <= 4 || length > MaxRequestSize {
-		return nil, bytesRead, PacketDecodingError{fmt.Sprintf("message of length %d too large or too small", length)}
-	}
-
-	encodedReq := make([]byte, length)
-	if _, err := io.ReadFull(r, encodedReq); err != nil {
-		return nil, bytesRead, err
-	}
-	bytesRead += len(encodedReq)
-
-	req = &request{}
-	if err := decode(encodedReq, req); err != nil {
-		return nil, bytesRead, err
-	}
-	return req, bytesRead, nil
-}
-
-func allocateBody(key, version int16) protocolBody {
-	switch key {
-	case 0:
-		return &ProduceRequest{}
-	case 1:
-		return &FetchRequest{}
-	case 2:
-		return &OffsetRequest{Version: version}
-	case 3:
-		return &MetadataRequest{}
-	case 8:
-		return &OffsetCommitRequest{Version: version}
-	case 9:
-		return &OffsetFetchRequest{}
-	case 10:
-		return &FindCoordinatorRequest{}
-	case 11:
-		return &JoinGroupRequest{}
-	case 12:
-		return &HeartbeatRequest{}
-	case 13:
-		return &LeaveGroupRequest{}
-	case 14:
-		return &SyncGroupRequest{}
-	case 15:
-		return &DescribeGroupsRequest{}
-	case 16:
-		return &ListGroupsRequest{}
-	case 17:
-		return &SaslHandshakeRequest{}
-	case 18:
-		return &ApiVersionsRequest{}
-	case 19:
-		return &CreateTopicsRequest{}
-	case 20:
-		return &DeleteTopicsRequest{}
-	case 21:
-		return &DeleteRecordsRequest{}
-	case 22:
-		return &InitProducerIDRequest{}
-	case 24:
-		return &AddPartitionsToTxnRequest{}
-	case 25:
-		return &AddOffsetsToTxnRequest{}
-	case 26:
-		return &EndTxnRequest{}
-	case 28:
-		return &TxnOffsetCommitRequest{}
-	case 29:
-		return &DescribeAclsRequest{}
-	case 30:
-		return &CreateAclsRequest{}
-	case 31:
-		return &DeleteAclsRequest{}
-	case 32:
-		return &DescribeConfigsRequest{}
-	case 33:
-		return &AlterConfigsRequest{}
-	case 36:
-		return &SaslAuthenticateRequest{}
-	case 37:
-		return &CreatePartitionsRequest{}
-	case 42:
-		return &DeleteGroupsRequest{}
-	}
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/response_header.go b/vendor/gopkg.in/Shopify/sarama.v1/response_header.go
deleted file mode 100644
index f3f4d27..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/response_header.go
+++ /dev/null
@@ -1,21 +0,0 @@
-package sarama
-
-import "fmt"
-
-type responseHeader struct {
-	length        int32
-	correlationID int32
-}
-
-func (r *responseHeader) decode(pd packetDecoder) (err error) {
-	r.length, err = pd.getInt32()
-	if err != nil {
-		return err
-	}
-	if r.length <= 4 || r.length > MaxResponseSize {
-		return PacketDecodingError{fmt.Sprintf("message of length %d too large or too small", r.length)}
-	}
-
-	r.correlationID, err = pd.getInt32()
-	return err
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/sarama.go b/vendor/gopkg.in/Shopify/sarama.v1/sarama.go
deleted file mode 100644
index 7d5dc60..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/sarama.go
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
-Package sarama is a pure Go client library for dealing with Apache Kafka (versions 0.8 and later). It includes a high-level
-API for easily producing and consuming messages, and a low-level API for controlling bytes on the wire when the high-level
-API is insufficient. Usage examples for the high-level APIs are provided inline with their full documentation.
-
-To produce messages, use either the AsyncProducer or the SyncProducer. The AsyncProducer accepts messages on a channel
-and produces them asynchronously in the background as efficiently as possible; it is preferred in most cases.
-The SyncProducer provides a method which will block until Kafka acknowledges the message as produced. This can be
-useful but comes with two caveats: it will generally be less efficient, and the actual durability guarantees
-depend on the configured value of `Producer.RequiredAcks`. There are configurations where a message acknowledged by the
-SyncProducer can still sometimes be lost.
-
-To consume messages, use the Consumer. Note that Sarama's Consumer implementation does not currently support automatic
-consumer-group rebalancing and offset tracking. For Zookeeper-based tracking (Kafka 0.8.2 and earlier), the
-https://github.com/wvanbergen/kafka library builds on Sarama to add this support. For Kafka-based tracking (Kafka 0.9
-and later), the https://github.com/bsm/sarama-cluster library builds on Sarama to add this support.
-
-For lower-level needs, the Broker and Request/Response objects permit precise control over each connection
-and message sent on the wire; the Client provides higher-level metadata management that is shared between
-the producers and the consumer. The Request/Response objects and properties are mostly undocumented, as they line up
-exactly with the protocol fields documented by Kafka at
-https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol
-
-Metrics are exposed through https://github.com/rcrowley/go-metrics library in a local registry.
-
-Broker related metrics:
-
-	+----------------------------------------------+------------+---------------------------------------------------------------+
-	| Name                                         | Type       | Description                                                   |
-	+----------------------------------------------+------------+---------------------------------------------------------------+
-	| incoming-byte-rate                           | meter      | Bytes/second read off all brokers                             |
-	| incoming-byte-rate-for-broker-<broker-id>    | meter      | Bytes/second read off a given broker                          |
-	| outgoing-byte-rate                           | meter      | Bytes/second written off all brokers                          |
-	| outgoing-byte-rate-for-broker-<broker-id>    | meter      | Bytes/second written off a given broker                       |
-	| request-rate                                 | meter      | Requests/second sent to all brokers                           |
-	| request-rate-for-broker-<broker-id>          | meter      | Requests/second sent to a given broker                        |
-	| request-size                                 | histogram  | Distribution of the request size in bytes for all brokers     |
-	| request-size-for-broker-<broker-id>          | histogram  | Distribution of the request size in bytes for a given broker  |
-	| request-latency-in-ms                        | histogram  | Distribution of the request latency in ms for all brokers     |
-	| request-latency-in-ms-for-broker-<broker-id> | histogram  | Distribution of the request latency in ms for a given broker  |
-	| response-rate                                | meter      | Responses/second received from all brokers                    |
-	| response-rate-for-broker-<broker-id>         | meter      | Responses/second received from a given broker                 |
-	| response-size                                | histogram  | Distribution of the response size in bytes for all brokers    |
-	| response-size-for-broker-<broker-id>         | histogram  | Distribution of the response size in bytes for a given broker |
-	+----------------------------------------------+------------+---------------------------------------------------------------+
-
-Note that we do not gather specific metrics for seed brokers but they are part of the "all brokers" metrics.
-
-Producer related metrics:
-
-	+-------------------------------------------+------------+--------------------------------------------------------------------------------------+
-	| Name                                      | Type       | Description                                                                          |
-	+-------------------------------------------+------------+--------------------------------------------------------------------------------------+
-	| batch-size                                | histogram  | Distribution of the number of bytes sent per partition per request for all topics    |
-	| batch-size-for-topic-<topic>              | histogram  | Distribution of the number of bytes sent per partition per request for a given topic |
-	| record-send-rate                          | meter      | Records/second sent to all topics                                                    |
-	| record-send-rate-for-topic-<topic>        | meter      | Records/second sent to a given topic                                                 |
-	| records-per-request                       | histogram  | Distribution of the number of records sent per request for all topics                |
-	| records-per-request-for-topic-<topic>     | histogram  | Distribution of the number of records sent per request for a given topic             |
-	| compression-ratio                         | histogram  | Distribution of the compression ratio times 100 of record batches for all topics     |
-	| compression-ratio-for-topic-<topic>       | histogram  | Distribution of the compression ratio times 100 of record batches for a given topic  |
-	+-------------------------------------------+------------+--------------------------------------------------------------------------------------+
-
-*/
-package sarama
-
-import (
-	"io/ioutil"
-	"log"
-)
-
-// Logger is the instance of a StdLogger interface that Sarama writes connection
-// management events to. By default it is set to discard all log messages via ioutil.Discard,
-// but you can set it to redirect wherever you want.
-var Logger StdLogger = log.New(ioutil.Discard, "[Sarama] ", log.LstdFlags)
-
-// StdLogger is used to log error messages.
-type StdLogger interface {
-	Print(v ...interface{})
-	Printf(format string, v ...interface{})
-	Println(v ...interface{})
-}
-
-// PanicHandler is called for recovering from panics spawned internally to the library (and thus
-// not recoverable by the caller's goroutine). Defaults to nil, which means panics are not recovered.
-var PanicHandler func(interface{})
-
-// MaxRequestSize is the maximum size (in bytes) of any request that Sarama will attempt to send. Trying
-// to send a request larger than this will result in an PacketEncodingError. The default of 100 MiB is aligned
-// with Kafka's default `socket.request.max.bytes`, which is the largest request the broker will attempt
-// to process.
-var MaxRequestSize int32 = 100 * 1024 * 1024
-
-// MaxResponseSize is the maximum size (in bytes) of any response that Sarama will attempt to parse. If
-// a broker returns a response message larger than this value, Sarama will return a PacketDecodingError to
-// protect the client from running out of memory. Please note that brokers do not have any natural limit on
-// the size of responses they send. In particular, they can send arbitrarily large fetch responses to consumers
-// (see https://issues.apache.org/jira/browse/KAFKA-2063).
-var MaxResponseSize int32 = 100 * 1024 * 1024
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/sasl_authenticate_request.go b/vendor/gopkg.in/Shopify/sarama.v1/sasl_authenticate_request.go
deleted file mode 100644
index 54c8b09..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/sasl_authenticate_request.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package sarama
-
-type SaslAuthenticateRequest struct {
-	SaslAuthBytes []byte
-}
-
-// APIKeySASLAuth is the API key for the SaslAuthenticate Kafka API
-const APIKeySASLAuth = 36
-
-func (r *SaslAuthenticateRequest) encode(pe packetEncoder) error {
-	return pe.putBytes(r.SaslAuthBytes)
-}
-
-func (r *SaslAuthenticateRequest) decode(pd packetDecoder, version int16) (err error) {
-	r.SaslAuthBytes, err = pd.getBytes()
-	return err
-}
-
-func (r *SaslAuthenticateRequest) key() int16 {
-	return APIKeySASLAuth
-}
-
-func (r *SaslAuthenticateRequest) version() int16 {
-	return 0
-}
-
-func (r *SaslAuthenticateRequest) requiredVersion() KafkaVersion {
-	return V1_0_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/sasl_authenticate_response.go b/vendor/gopkg.in/Shopify/sarama.v1/sasl_authenticate_response.go
deleted file mode 100644
index 0038c3f..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/sasl_authenticate_response.go
+++ /dev/null
@@ -1,44 +0,0 @@
-package sarama
-
-type SaslAuthenticateResponse struct {
-	Err           KError
-	ErrorMessage  *string
-	SaslAuthBytes []byte
-}
-
-func (r *SaslAuthenticateResponse) encode(pe packetEncoder) error {
-	pe.putInt16(int16(r.Err))
-	if err := pe.putNullableString(r.ErrorMessage); err != nil {
-		return err
-	}
-	return pe.putBytes(r.SaslAuthBytes)
-}
-
-func (r *SaslAuthenticateResponse) decode(pd packetDecoder, version int16) error {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-
-	r.Err = KError(kerr)
-
-	if r.ErrorMessage, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	r.SaslAuthBytes, err = pd.getBytes()
-
-	return err
-}
-
-func (r *SaslAuthenticateResponse) key() int16 {
-	return APIKeySASLAuth
-}
-
-func (r *SaslAuthenticateResponse) version() int16 {
-	return 0
-}
-
-func (r *SaslAuthenticateResponse) requiredVersion() KafkaVersion {
-	return V1_0_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/sasl_handshake_request.go b/vendor/gopkg.in/Shopify/sarama.v1/sasl_handshake_request.go
deleted file mode 100644
index fe5ba05..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/sasl_handshake_request.go
+++ /dev/null
@@ -1,34 +0,0 @@
-package sarama
-
-type SaslHandshakeRequest struct {
-	Mechanism string
-	Version   int16
-}
-
-func (r *SaslHandshakeRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(r.Mechanism); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (r *SaslHandshakeRequest) decode(pd packetDecoder, version int16) (err error) {
-	if r.Mechanism, err = pd.getString(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (r *SaslHandshakeRequest) key() int16 {
-	return 17
-}
-
-func (r *SaslHandshakeRequest) version() int16 {
-	return r.Version
-}
-
-func (r *SaslHandshakeRequest) requiredVersion() KafkaVersion {
-	return V0_10_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/sasl_handshake_response.go b/vendor/gopkg.in/Shopify/sarama.v1/sasl_handshake_response.go
deleted file mode 100644
index ef290d4..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/sasl_handshake_response.go
+++ /dev/null
@@ -1,38 +0,0 @@
-package sarama
-
-type SaslHandshakeResponse struct {
-	Err               KError
-	EnabledMechanisms []string
-}
-
-func (r *SaslHandshakeResponse) encode(pe packetEncoder) error {
-	pe.putInt16(int16(r.Err))
-	return pe.putStringArray(r.EnabledMechanisms)
-}
-
-func (r *SaslHandshakeResponse) decode(pd packetDecoder, version int16) error {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-
-	r.Err = KError(kerr)
-
-	if r.EnabledMechanisms, err = pd.getStringArray(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (r *SaslHandshakeResponse) key() int16 {
-	return 17
-}
-
-func (r *SaslHandshakeResponse) version() int16 {
-	return 0
-}
-
-func (r *SaslHandshakeResponse) requiredVersion() KafkaVersion {
-	return V0_10_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/sync_group_request.go b/vendor/gopkg.in/Shopify/sarama.v1/sync_group_request.go
deleted file mode 100644
index fe20708..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/sync_group_request.go
+++ /dev/null
@@ -1,100 +0,0 @@
-package sarama
-
-type SyncGroupRequest struct {
-	GroupId          string
-	GenerationId     int32
-	MemberId         string
-	GroupAssignments map[string][]byte
-}
-
-func (r *SyncGroupRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(r.GroupId); err != nil {
-		return err
-	}
-
-	pe.putInt32(r.GenerationId)
-
-	if err := pe.putString(r.MemberId); err != nil {
-		return err
-	}
-
-	if err := pe.putArrayLength(len(r.GroupAssignments)); err != nil {
-		return err
-	}
-	for memberId, memberAssignment := range r.GroupAssignments {
-		if err := pe.putString(memberId); err != nil {
-			return err
-		}
-		if err := pe.putBytes(memberAssignment); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (r *SyncGroupRequest) decode(pd packetDecoder, version int16) (err error) {
-	if r.GroupId, err = pd.getString(); err != nil {
-		return
-	}
-	if r.GenerationId, err = pd.getInt32(); err != nil {
-		return
-	}
-	if r.MemberId, err = pd.getString(); err != nil {
-		return
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-	if n == 0 {
-		return nil
-	}
-
-	r.GroupAssignments = make(map[string][]byte)
-	for i := 0; i < n; i++ {
-		memberId, err := pd.getString()
-		if err != nil {
-			return err
-		}
-		memberAssignment, err := pd.getBytes()
-		if err != nil {
-			return err
-		}
-
-		r.GroupAssignments[memberId] = memberAssignment
-	}
-
-	return nil
-}
-
-func (r *SyncGroupRequest) key() int16 {
-	return 14
-}
-
-func (r *SyncGroupRequest) version() int16 {
-	return 0
-}
-
-func (r *SyncGroupRequest) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
-
-func (r *SyncGroupRequest) AddGroupAssignment(memberId string, memberAssignment []byte) {
-	if r.GroupAssignments == nil {
-		r.GroupAssignments = make(map[string][]byte)
-	}
-
-	r.GroupAssignments[memberId] = memberAssignment
-}
-
-func (r *SyncGroupRequest) AddGroupAssignmentMember(memberId string, memberAssignment *ConsumerGroupMemberAssignment) error {
-	bin, err := encode(memberAssignment, nil)
-	if err != nil {
-		return err
-	}
-
-	r.AddGroupAssignment(memberId, bin)
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/sync_group_response.go b/vendor/gopkg.in/Shopify/sarama.v1/sync_group_response.go
deleted file mode 100644
index 194b382..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/sync_group_response.go
+++ /dev/null
@@ -1,41 +0,0 @@
-package sarama
-
-type SyncGroupResponse struct {
-	Err              KError
-	MemberAssignment []byte
-}
-
-func (r *SyncGroupResponse) GetMemberAssignment() (*ConsumerGroupMemberAssignment, error) {
-	assignment := new(ConsumerGroupMemberAssignment)
-	err := decode(r.MemberAssignment, assignment)
-	return assignment, err
-}
-
-func (r *SyncGroupResponse) encode(pe packetEncoder) error {
-	pe.putInt16(int16(r.Err))
-	return pe.putBytes(r.MemberAssignment)
-}
-
-func (r *SyncGroupResponse) decode(pd packetDecoder, version int16) (err error) {
-	kerr, err := pd.getInt16()
-	if err != nil {
-		return err
-	}
-
-	r.Err = KError(kerr)
-
-	r.MemberAssignment, err = pd.getBytes()
-	return
-}
-
-func (r *SyncGroupResponse) key() int16 {
-	return 14
-}
-
-func (r *SyncGroupResponse) version() int16 {
-	return 0
-}
-
-func (r *SyncGroupResponse) requiredVersion() KafkaVersion {
-	return V0_9_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/sync_producer.go b/vendor/gopkg.in/Shopify/sarama.v1/sync_producer.go
deleted file mode 100644
index 021c5a0..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/sync_producer.go
+++ /dev/null
@@ -1,149 +0,0 @@
-package sarama
-
-import "sync"
-
-// SyncProducer publishes Kafka messages, blocking until they have been acknowledged. It routes messages to the correct
-// broker, refreshing metadata as appropriate, and parses responses for errors. You must call Close() on a producer
-// to avoid leaks, it may not be garbage-collected automatically when it passes out of scope.
-//
-// The SyncProducer comes with two caveats: it will generally be less efficient than the AsyncProducer, and the actual
-// durability guarantee provided when a message is acknowledged depend on the configured value of `Producer.RequiredAcks`.
-// There are configurations where a message acknowledged by the SyncProducer can still sometimes be lost.
-//
-// For implementation reasons, the SyncProducer requires `Producer.Return.Errors` and `Producer.Return.Successes` to
-// be set to true in its configuration.
-type SyncProducer interface {
-
-	// SendMessage produces a given message, and returns only when it either has
-	// succeeded or failed to produce. It will return the partition and the offset
-	// of the produced message, or an error if the message failed to produce.
-	SendMessage(msg *ProducerMessage) (partition int32, offset int64, err error)
-
-	// SendMessages produces a given set of messages, and returns only when all
-	// messages in the set have either succeeded or failed. Note that messages
-	// can succeed and fail individually; if some succeed and some fail,
-	// SendMessages will return an error.
-	SendMessages(msgs []*ProducerMessage) error
-
-	// Close shuts down the producer and waits for any buffered messages to be
-	// flushed. You must call this function before a producer object passes out of
-	// scope, as it may otherwise leak memory. You must call this before calling
-	// Close on the underlying client.
-	Close() error
-}
-
-type syncProducer struct {
-	producer *asyncProducer
-	wg       sync.WaitGroup
-}
-
-// NewSyncProducer creates a new SyncProducer using the given broker addresses and configuration.
-func NewSyncProducer(addrs []string, config *Config) (SyncProducer, error) {
-	if config == nil {
-		config = NewConfig()
-		config.Producer.Return.Successes = true
-	}
-
-	if err := verifyProducerConfig(config); err != nil {
-		return nil, err
-	}
-
-	p, err := NewAsyncProducer(addrs, config)
-	if err != nil {
-		return nil, err
-	}
-	return newSyncProducerFromAsyncProducer(p.(*asyncProducer)), nil
-}
-
-// NewSyncProducerFromClient creates a new SyncProducer using the given client. It is still
-// necessary to call Close() on the underlying client when shutting down this producer.
-func NewSyncProducerFromClient(client Client) (SyncProducer, error) {
-	if err := verifyProducerConfig(client.Config()); err != nil {
-		return nil, err
-	}
-
-	p, err := NewAsyncProducerFromClient(client)
-	if err != nil {
-		return nil, err
-	}
-	return newSyncProducerFromAsyncProducer(p.(*asyncProducer)), nil
-}
-
-func newSyncProducerFromAsyncProducer(p *asyncProducer) *syncProducer {
-	sp := &syncProducer{producer: p}
-
-	sp.wg.Add(2)
-	go withRecover(sp.handleSuccesses)
-	go withRecover(sp.handleErrors)
-
-	return sp
-}
-
-func verifyProducerConfig(config *Config) error {
-	if !config.Producer.Return.Errors {
-		return ConfigurationError("Producer.Return.Errors must be true to be used in a SyncProducer")
-	}
-	if !config.Producer.Return.Successes {
-		return ConfigurationError("Producer.Return.Successes must be true to be used in a SyncProducer")
-	}
-	return nil
-}
-
-func (sp *syncProducer) SendMessage(msg *ProducerMessage) (partition int32, offset int64, err error) {
-	expectation := make(chan *ProducerError, 1)
-	msg.expectation = expectation
-	sp.producer.Input() <- msg
-
-	if err := <-expectation; err != nil {
-		return -1, -1, err.Err
-	}
-
-	return msg.Partition, msg.Offset, nil
-}
-
-func (sp *syncProducer) SendMessages(msgs []*ProducerMessage) error {
-	expectations := make(chan chan *ProducerError, len(msgs))
-	go func() {
-		for _, msg := range msgs {
-			expectation := make(chan *ProducerError, 1)
-			msg.expectation = expectation
-			sp.producer.Input() <- msg
-			expectations <- expectation
-		}
-		close(expectations)
-	}()
-
-	var errors ProducerErrors
-	for expectation := range expectations {
-		if err := <-expectation; err != nil {
-			errors = append(errors, err)
-		}
-	}
-
-	if len(errors) > 0 {
-		return errors
-	}
-	return nil
-}
-
-func (sp *syncProducer) handleSuccesses() {
-	defer sp.wg.Done()
-	for msg := range sp.producer.Successes() {
-		expectation := msg.expectation
-		expectation <- nil
-	}
-}
-
-func (sp *syncProducer) handleErrors() {
-	defer sp.wg.Done()
-	for err := range sp.producer.Errors() {
-		expectation := err.Msg.expectation
-		expectation <- err
-	}
-}
-
-func (sp *syncProducer) Close() error {
-	sp.producer.AsyncClose()
-	sp.wg.Wait()
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/timestamp.go b/vendor/gopkg.in/Shopify/sarama.v1/timestamp.go
deleted file mode 100644
index 372278d..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/timestamp.go
+++ /dev/null
@@ -1,40 +0,0 @@
-package sarama
-
-import (
-	"fmt"
-	"time"
-)
-
-type Timestamp struct {
-	*time.Time
-}
-
-func (t Timestamp) encode(pe packetEncoder) error {
-	timestamp := int64(-1)
-
-	if !t.Before(time.Unix(0, 0)) {
-		timestamp = t.UnixNano() / int64(time.Millisecond)
-	} else if !t.IsZero() {
-		return PacketEncodingError{fmt.Sprintf("invalid timestamp (%v)", t)}
-	}
-
-	pe.putInt64(timestamp)
-	return nil
-}
-
-func (t Timestamp) decode(pd packetDecoder) error {
-	millis, err := pd.getInt64()
-	if err != nil {
-		return err
-	}
-
-	// negative timestamps are invalid, in these cases we should return
-	// a zero time
-	timestamp := time.Time{}
-	if millis >= 0 {
-		timestamp = time.Unix(millis/1000, (millis%1000)*int64(time.Millisecond))
-	}
-
-	*t.Time = timestamp
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/txn_offset_commit_request.go b/vendor/gopkg.in/Shopify/sarama.v1/txn_offset_commit_request.go
deleted file mode 100644
index 71e95b8..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/txn_offset_commit_request.go
+++ /dev/null
@@ -1,126 +0,0 @@
-package sarama
-
-type TxnOffsetCommitRequest struct {
-	TransactionalID string
-	GroupID         string
-	ProducerID      int64
-	ProducerEpoch   int16
-	Topics          map[string][]*PartitionOffsetMetadata
-}
-
-func (t *TxnOffsetCommitRequest) encode(pe packetEncoder) error {
-	if err := pe.putString(t.TransactionalID); err != nil {
-		return err
-	}
-	if err := pe.putString(t.GroupID); err != nil {
-		return err
-	}
-	pe.putInt64(t.ProducerID)
-	pe.putInt16(t.ProducerEpoch)
-
-	if err := pe.putArrayLength(len(t.Topics)); err != nil {
-		return err
-	}
-	for topic, partitions := range t.Topics {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := pe.putArrayLength(len(partitions)); err != nil {
-			return err
-		}
-		for _, partition := range partitions {
-			if err := partition.encode(pe); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-func (t *TxnOffsetCommitRequest) decode(pd packetDecoder, version int16) (err error) {
-	if t.TransactionalID, err = pd.getString(); err != nil {
-		return err
-	}
-	if t.GroupID, err = pd.getString(); err != nil {
-		return err
-	}
-	if t.ProducerID, err = pd.getInt64(); err != nil {
-		return err
-	}
-	if t.ProducerEpoch, err = pd.getInt16(); err != nil {
-		return err
-	}
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	t.Topics = make(map[string][]*PartitionOffsetMetadata)
-	for i := 0; i < n; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		m, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-
-		t.Topics[topic] = make([]*PartitionOffsetMetadata, m)
-
-		for j := 0; j < m; j++ {
-			partitionOffsetMetadata := new(PartitionOffsetMetadata)
-			if err := partitionOffsetMetadata.decode(pd, version); err != nil {
-				return err
-			}
-			t.Topics[topic][j] = partitionOffsetMetadata
-		}
-	}
-
-	return nil
-}
-
-func (a *TxnOffsetCommitRequest) key() int16 {
-	return 28
-}
-
-func (a *TxnOffsetCommitRequest) version() int16 {
-	return 0
-}
-
-func (a *TxnOffsetCommitRequest) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
-
-type PartitionOffsetMetadata struct {
-	Partition int32
-	Offset    int64
-	Metadata  *string
-}
-
-func (p *PartitionOffsetMetadata) encode(pe packetEncoder) error {
-	pe.putInt32(p.Partition)
-	pe.putInt64(p.Offset)
-	if err := pe.putNullableString(p.Metadata); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (p *PartitionOffsetMetadata) decode(pd packetDecoder, version int16) (err error) {
-	if p.Partition, err = pd.getInt32(); err != nil {
-		return err
-	}
-	if p.Offset, err = pd.getInt64(); err != nil {
-		return err
-	}
-	if p.Metadata, err = pd.getNullableString(); err != nil {
-		return err
-	}
-
-	return nil
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/txn_offset_commit_response.go b/vendor/gopkg.in/Shopify/sarama.v1/txn_offset_commit_response.go
deleted file mode 100644
index 6c980f4..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/txn_offset_commit_response.go
+++ /dev/null
@@ -1,83 +0,0 @@
-package sarama
-
-import (
-	"time"
-)
-
-type TxnOffsetCommitResponse struct {
-	ThrottleTime time.Duration
-	Topics       map[string][]*PartitionError
-}
-
-func (t *TxnOffsetCommitResponse) encode(pe packetEncoder) error {
-	pe.putInt32(int32(t.ThrottleTime / time.Millisecond))
-	if err := pe.putArrayLength(len(t.Topics)); err != nil {
-		return err
-	}
-
-	for topic, e := range t.Topics {
-		if err := pe.putString(topic); err != nil {
-			return err
-		}
-		if err := pe.putArrayLength(len(e)); err != nil {
-			return err
-		}
-		for _, partitionError := range e {
-			if err := partitionError.encode(pe); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-func (t *TxnOffsetCommitResponse) decode(pd packetDecoder, version int16) (err error) {
-	throttleTime, err := pd.getInt32()
-	if err != nil {
-		return err
-	}
-	t.ThrottleTime = time.Duration(throttleTime) * time.Millisecond
-
-	n, err := pd.getArrayLength()
-	if err != nil {
-		return err
-	}
-
-	t.Topics = make(map[string][]*PartitionError)
-
-	for i := 0; i < n; i++ {
-		topic, err := pd.getString()
-		if err != nil {
-			return err
-		}
-
-		m, err := pd.getArrayLength()
-		if err != nil {
-			return err
-		}
-
-		t.Topics[topic] = make([]*PartitionError, m)
-
-		for j := 0; j < m; j++ {
-			t.Topics[topic][j] = new(PartitionError)
-			if err := t.Topics[topic][j].decode(pd, version); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-func (a *TxnOffsetCommitResponse) key() int16 {
-	return 28
-}
-
-func (a *TxnOffsetCommitResponse) version() int16 {
-	return 0
-}
-
-func (a *TxnOffsetCommitResponse) requiredVersion() KafkaVersion {
-	return V0_11_0_0
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/utils.go b/vendor/gopkg.in/Shopify/sarama.v1/utils.go
deleted file mode 100644
index 7dcbf03..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/utils.go
+++ /dev/null
@@ -1,220 +0,0 @@
-package sarama
-
-import (
-	"bufio"
-	"fmt"
-	"net"
-	"regexp"
-)
-
-type none struct{}
-
-// make []int32 sortable so we can sort partition numbers
-type int32Slice []int32
-
-func (slice int32Slice) Len() int {
-	return len(slice)
-}
-
-func (slice int32Slice) Less(i, j int) bool {
-	return slice[i] < slice[j]
-}
-
-func (slice int32Slice) Swap(i, j int) {
-	slice[i], slice[j] = slice[j], slice[i]
-}
-
-func dupInt32Slice(input []int32) []int32 {
-	ret := make([]int32, 0, len(input))
-	for _, val := range input {
-		ret = append(ret, val)
-	}
-	return ret
-}
-
-func withRecover(fn func()) {
-	defer func() {
-		handler := PanicHandler
-		if handler != nil {
-			if err := recover(); err != nil {
-				handler(err)
-			}
-		}
-	}()
-
-	fn()
-}
-
-func safeAsyncClose(b *Broker) {
-	tmp := b // local var prevents clobbering in goroutine
-	go withRecover(func() {
-		if connected, _ := tmp.Connected(); connected {
-			if err := tmp.Close(); err != nil {
-				Logger.Println("Error closing broker", tmp.ID(), ":", err)
-			}
-		}
-	})
-}
-
-// Encoder is a simple interface for any type that can be encoded as an array of bytes
-// in order to be sent as the key or value of a Kafka message. Length() is provided as an
-// optimization, and must return the same as len() on the result of Encode().
-type Encoder interface {
-	Encode() ([]byte, error)
-	Length() int
-}
-
-// make strings and byte slices encodable for convenience so they can be used as keys
-// and/or values in kafka messages
-
-// StringEncoder implements the Encoder interface for Go strings so that they can be used
-// as the Key or Value in a ProducerMessage.
-type StringEncoder string
-
-func (s StringEncoder) Encode() ([]byte, error) {
-	return []byte(s), nil
-}
-
-func (s StringEncoder) Length() int {
-	return len(s)
-}
-
-// ByteEncoder implements the Encoder interface for Go byte slices so that they can be used
-// as the Key or Value in a ProducerMessage.
-type ByteEncoder []byte
-
-func (b ByteEncoder) Encode() ([]byte, error) {
-	return b, nil
-}
-
-func (b ByteEncoder) Length() int {
-	return len(b)
-}
-
-// bufConn wraps a net.Conn with a buffer for reads to reduce the number of
-// reads that trigger syscalls.
-type bufConn struct {
-	net.Conn
-	buf *bufio.Reader
-}
-
-func newBufConn(conn net.Conn) *bufConn {
-	return &bufConn{
-		Conn: conn,
-		buf:  bufio.NewReader(conn),
-	}
-}
-
-func (bc *bufConn) Read(b []byte) (n int, err error) {
-	return bc.buf.Read(b)
-}
-
-// KafkaVersion instances represent versions of the upstream Kafka broker.
-type KafkaVersion struct {
-	// it's a struct rather than just typing the array directly to make it opaque and stop people
-	// generating their own arbitrary versions
-	version [4]uint
-}
-
-func newKafkaVersion(major, minor, veryMinor, patch uint) KafkaVersion {
-	return KafkaVersion{
-		version: [4]uint{major, minor, veryMinor, patch},
-	}
-}
-
-// IsAtLeast return true if and only if the version it is called on is
-// greater than or equal to the version passed in:
-//    V1.IsAtLeast(V2) // false
-//    V2.IsAtLeast(V1) // true
-func (v KafkaVersion) IsAtLeast(other KafkaVersion) bool {
-	for i := range v.version {
-		if v.version[i] > other.version[i] {
-			return true
-		} else if v.version[i] < other.version[i] {
-			return false
-		}
-	}
-	return true
-}
-
-// Effective constants defining the supported kafka versions.
-var (
-	V0_8_2_0  = newKafkaVersion(0, 8, 2, 0)
-	V0_8_2_1  = newKafkaVersion(0, 8, 2, 1)
-	V0_8_2_2  = newKafkaVersion(0, 8, 2, 2)
-	V0_9_0_0  = newKafkaVersion(0, 9, 0, 0)
-	V0_9_0_1  = newKafkaVersion(0, 9, 0, 1)
-	V0_10_0_0 = newKafkaVersion(0, 10, 0, 0)
-	V0_10_0_1 = newKafkaVersion(0, 10, 0, 1)
-	V0_10_1_0 = newKafkaVersion(0, 10, 1, 0)
-	V0_10_1_1 = newKafkaVersion(0, 10, 1, 1)
-	V0_10_2_0 = newKafkaVersion(0, 10, 2, 0)
-	V0_10_2_1 = newKafkaVersion(0, 10, 2, 1)
-	V0_11_0_0 = newKafkaVersion(0, 11, 0, 0)
-	V0_11_0_1 = newKafkaVersion(0, 11, 0, 1)
-	V0_11_0_2 = newKafkaVersion(0, 11, 0, 2)
-	V1_0_0_0  = newKafkaVersion(1, 0, 0, 0)
-	V1_1_0_0  = newKafkaVersion(1, 1, 0, 0)
-	V1_1_1_0  = newKafkaVersion(1, 1, 1, 0)
-	V2_0_0_0  = newKafkaVersion(2, 0, 0, 0)
-	V2_0_1_0  = newKafkaVersion(2, 0, 1, 0)
-	V2_1_0_0  = newKafkaVersion(2, 1, 0, 0)
-
-	SupportedVersions = []KafkaVersion{
-		V0_8_2_0,
-		V0_8_2_1,
-		V0_8_2_2,
-		V0_9_0_0,
-		V0_9_0_1,
-		V0_10_0_0,
-		V0_10_0_1,
-		V0_10_1_0,
-		V0_10_1_1,
-		V0_10_2_0,
-		V0_10_2_1,
-		V0_11_0_0,
-		V0_11_0_1,
-		V0_11_0_2,
-		V1_0_0_0,
-		V1_1_0_0,
-		V1_1_1_0,
-		V2_0_0_0,
-		V2_0_1_0,
-		V2_1_0_0,
-	}
-	MinVersion = V0_8_2_0
-	MaxVersion = V2_1_0_0
-)
-
-func ParseKafkaVersion(s string) (KafkaVersion, error) {
-	if len(s) < 5 {
-		return MinVersion, fmt.Errorf("invalid version `%s`", s)
-	}
-	var major, minor, veryMinor, patch uint
-	var err error
-	if s[0] == '0' {
-		err = scanKafkaVersion(s, `^0\.\d+\.\d+\.\d+$`, "0.%d.%d.%d", [3]*uint{&minor, &veryMinor, &patch})
-	} else {
-		err = scanKafkaVersion(s, `^\d+\.\d+\.\d+$`, "%d.%d.%d", [3]*uint{&major, &minor, &veryMinor})
-	}
-	if err != nil {
-		return MinVersion, err
-	}
-	return newKafkaVersion(major, minor, veryMinor, patch), nil
-}
-
-func scanKafkaVersion(s string, pattern string, format string, v [3]*uint) error {
-	if !regexp.MustCompile(pattern).MatchString(s) {
-		return fmt.Errorf("invalid version `%s`", s)
-	}
-	_, err := fmt.Sscanf(s, format, v[0], v[1], v[2])
-	return err
-}
-
-func (v KafkaVersion) String() string {
-	if v.version[0] == 0 {
-		return fmt.Sprintf("0.%d.%d.%d", v.version[1], v.version[2], v.version[3])
-	}
-
-	return fmt.Sprintf("%d.%d.%d", v.version[0], v.version[1], v.version[2])
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/zstd_cgo.go b/vendor/gopkg.in/Shopify/sarama.v1/zstd_cgo.go
deleted file mode 100644
index f5ccb31..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/zstd_cgo.go
+++ /dev/null
@@ -1,13 +0,0 @@
-// +build cgo
-
-package sarama
-
-import "github.com/DataDog/zstd"
-
-func zstdDecompress(dst, src []byte) ([]byte, error) {
-	return zstd.Decompress(dst, src)
-}
-
-func zstdCompressLevel(dst, src []byte, level int) ([]byte, error) {
-	return zstd.CompressLevel(dst, src, level)
-}
diff --git a/vendor/gopkg.in/Shopify/sarama.v1/zstd_fallback.go b/vendor/gopkg.in/Shopify/sarama.v1/zstd_fallback.go
deleted file mode 100644
index 381a56b..0000000
--- a/vendor/gopkg.in/Shopify/sarama.v1/zstd_fallback.go
+++ /dev/null
@@ -1,17 +0,0 @@
-// +build !cgo
-
-package sarama
-
-import (
-	"errors"
-)
-
-var errZstdCgo = errors.New("zstd compression requires building with cgo enabled")
-
-func zstdDecompress(dst, src []byte) ([]byte, error) {
-	return nil, errZstdCgo
-}
-
-func zstdCompressLevel(dst, src []byte, level int) ([]byte, error) {
-	return nil, errZstdCgo
-}