| /* |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package main |
| |
| import ( |
| "context" |
| "fmt" |
| "os" |
| "strconv" |
| "sync" |
| "sync/atomic" |
| "time" |
| |
| "github.com/apache/rocketmq-client-go/v2" |
| "github.com/apache/rocketmq-client-go/v2/primitive" |
| "github.com/apache/rocketmq-client-go/v2/producer" |
| ) |
| |
| type DemoListener struct { |
| localTrans *sync.Map |
| transactionIndex int32 |
| } |
| |
| func NewDemoListener() *DemoListener { |
| return &DemoListener{ |
| localTrans: new(sync.Map), |
| } |
| } |
| |
| func (dl *DemoListener) ExecuteLocalTransaction(msg *primitive.Message) primitive.LocalTransactionState { |
| nextIndex := atomic.AddInt32(&dl.transactionIndex, 1) |
| fmt.Printf("nextIndex: %v for transactionID: %v\n", nextIndex, msg.TransactionId) |
| status := nextIndex % 3 |
| dl.localTrans.Store(msg.TransactionId, primitive.LocalTransactionState(status+1)) |
| |
| fmt.Printf("dl") |
| return primitive.UnknowState |
| } |
| |
| func (dl *DemoListener) CheckLocalTransaction(msg *primitive.MessageExt) primitive.LocalTransactionState { |
| fmt.Printf("%v msg transactionID : %v\n", time.Now(), msg.TransactionId) |
| v, existed := dl.localTrans.Load(msg.TransactionId) |
| if !existed { |
| fmt.Printf("unknow msg: %v, return Commit", msg) |
| return primitive.CommitMessageState |
| } |
| state := v.(primitive.LocalTransactionState) |
| switch state { |
| case 1: |
| fmt.Printf("checkLocalTransaction COMMIT_MESSAGE: %v\n", msg) |
| return primitive.CommitMessageState |
| case 2: |
| fmt.Printf("checkLocalTransaction ROLLBACK_MESSAGE: %v\n", msg) |
| return primitive.RollbackMessageState |
| case 3: |
| fmt.Printf("checkLocalTransaction unknow: %v\n", msg) |
| return primitive.UnknowState |
| default: |
| fmt.Printf("checkLocalTransaction default COMMIT_MESSAGE: %v\n", msg) |
| return primitive.CommitMessageState |
| } |
| } |
| |
| func main() { |
| p, _ := rocketmq.NewTransactionProducer( |
| NewDemoListener(), |
| producer.WithNameServer([]string{"127.0.0.1:9876"}), |
| producer.WithRetry(1), |
| ) |
| err := p.Start() |
| if err != nil { |
| fmt.Printf("start producer error: %s\n", err.Error()) |
| os.Exit(1) |
| } |
| |
| for i := 0; i < 10; i++ { |
| res, err := p.SendMessageInTransaction(context.Background(), |
| primitive.NewMessage("TopicTest5", []byte("Hello RocketMQ again "+strconv.Itoa(i)))) |
| |
| if err != nil { |
| fmt.Printf("send message error: %s\n", err) |
| } else { |
| fmt.Printf("send message success: result=%s\n", res.String()) |
| } |
| } |
| time.Sleep(5 * time.Minute) |
| err = p.Shutdown() |
| if err != nil { |
| fmt.Printf("shutdown producer error: %s", err.Error()) |
| } |
| } |