blob: 36c1ede4e0d8b002dca0a7e4acc21b422f53f6dc [file] [log] [blame]
Scott Baker2c1c4822019-10-16 11:02:41 -07001/*
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 (
19 "time"
20
21 ca "github.com/opencord/voltha-protos/go/inter_container"
22)
23
24const (
25 PartitionConsumer = iota
26 GroupCustomer = iota
27)
28
29const (
30 OffsetNewest = -1
31 OffsetOldest = -2
32)
33
34const (
35 GroupIdKey = "groupId"
36 Offset = "offset"
37)
38
39const (
40 DefaultKafkaHost = "127.0.0.1"
41 DefaultKafkaPort = 9092
42 DefaultGroupName = "voltha"
43 DefaultSleepOnError = 1
44 DefaultProducerFlushFrequency = 10
45 DefaultProducerFlushMessages = 10
46 DefaultProducerFlushMaxmessages = 100
47 DefaultProducerReturnSuccess = true
48 DefaultProducerReturnErrors = true
49 DefaultProducerRetryMax = 3
50 DefaultProducerRetryBackoff = time.Millisecond * 100
51 DefaultConsumerMaxwait = 100
52 DefaultMaxProcessingTime = 100
53 DefaultConsumerType = PartitionConsumer
54 DefaultNumberPartitions = 3
55 DefaultNumberReplicas = 1
56 DefaultAutoCreateTopic = false
57 DefaultMetadataMaxRetry = 3
58)
59
60// MsgClient represents the set of APIs a Kafka MsgClient must implement
61type Client interface {
62 Start() error
63 Stop()
64 CreateTopic(topic *Topic, numPartition int, repFactor int) error
65 DeleteTopic(topic *Topic) error
66 Subscribe(topic *Topic, kvArgs ...*KVArg) (<-chan *ca.InterContainerMessage, error)
67 UnSubscribe(topic *Topic, ch <-chan *ca.InterContainerMessage) error
68 Send(msg interface{}, topic *Topic, keys ...string) error
69}