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khenaidoo43c82122018-11-22 18:38:28 -05001/*
2 * Copyright 2018-present Open Networking Foundation
3
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7
8 * http://www.apache.org/licenses/LICENSE-2.0
9
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package kafka
17
18import (
khenaidoo4c1a5bf2018-11-29 15:53:42 -050019 "time"
Abhilash S.L294ff522019-06-26 18:14:33 +053020
21 ca "github.com/opencord/voltha-protos/go/inter_container"
khenaidoo43c82122018-11-22 18:38:28 -050022)
23
24const (
khenaidoo4c1a5bf2018-11-29 15:53:42 -050025 PartitionConsumer = iota
26 GroupCustomer = iota
27)
28
29const (
khenaidoo731697e2019-01-29 16:03:29 -050030 OffsetNewest = -1
31 OffsetOldest = -2
32)
33
34const (
khenaidooca301322019-01-09 23:06:32 -050035 GroupIdKey = "groupId"
khenaidoo2c6a0992019-04-29 13:46:56 -040036 Offset = "offset"
khenaidooca301322019-01-09 23:06:32 -050037)
38
39const (
khenaidoo4c1a5bf2018-11-29 15:53:42 -050040 DefaultKafkaHost = "127.0.0.1"
41 DefaultKafkaPort = 9092
khenaidooca301322019-01-09 23:06:32 -050042 DefaultGroupName = "voltha"
khenaidoo4c1a5bf2018-11-29 15:53:42 -050043 DefaultSleepOnError = 1
khenaidoo8f474192019-04-03 17:20:44 -040044 DefaultProducerFlushFrequency = 10
45 DefaultProducerFlushMessages = 10
46 DefaultProducerFlushMaxmessages = 100
khenaidoo90847922018-12-03 14:47:51 -050047 DefaultProducerReturnSuccess = true
khenaidoo4c1a5bf2018-11-29 15:53:42 -050048 DefaultProducerReturnErrors = true
49 DefaultProducerRetryMax = 3
50 DefaultProducerRetryBackoff = time.Millisecond * 100
khenaidoo8f474192019-04-03 17:20:44 -040051 DefaultConsumerMaxwait = 100
khenaidoo4c1a5bf2018-11-29 15:53:42 -050052 DefaultMaxProcessingTime = 100
53 DefaultConsumerType = PartitionConsumer
54 DefaultNumberPartitions = 3
55 DefaultNumberReplicas = 1
56 DefaultAutoCreateTopic = false
Abhilash S.L294ff522019-06-26 18:14:33 +053057 DefaultMetadataMaxRetry = 3
khenaidoo43c82122018-11-22 18:38:28 -050058)
59
60// MsgClient represents the set of APIs a Kafka MsgClient must implement
61type Client interface {
khenaidoo4c1a5bf2018-11-29 15:53:42 -050062 Start() error
khenaidoo43c82122018-11-22 18:38:28 -050063 Stop()
khenaidoo4c1a5bf2018-11-29 15:53:42 -050064 CreateTopic(topic *Topic, numPartition int, repFactor int) error
khenaidoo43c82122018-11-22 18:38:28 -050065 DeleteTopic(topic *Topic) error
khenaidooca301322019-01-09 23:06:32 -050066 Subscribe(topic *Topic, kvArgs ...*KVArg) (<-chan *ca.InterContainerMessage, error)
khenaidoo43c82122018-11-22 18:38:28 -050067 UnSubscribe(topic *Topic, ch <-chan *ca.InterContainerMessage) error
khenaidoo4c1a5bf2018-11-29 15:53:42 -050068 Send(msg interface{}, topic *Topic, keys ...string) error
khenaidoo43c82122018-11-22 18:38:28 -050069}