| /* |
| * 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 ( |
| "fmt" |
| "sync" |
| "sync/atomic" |
| |
| "github.com/apache/rocketmq-client-go/core" |
| ) |
| |
| type queueSelectorByOrderID struct{} |
| |
| func (s queueSelectorByOrderID) Select(size int, m *rocketmq.Message, arg interface{}) int { |
| return arg.(int) % size |
| } |
| |
| type worker struct { |
| p rocketmq.Producer |
| leftMsgCount int64 |
| } |
| |
| func (w *worker) run() { |
| selector := queueSelectorByOrderID{} |
| for atomic.AddInt64(&w.leftMsgCount, -1) >= 0 { |
| r, err := w.p.SendMessageOrderly( |
| &rocketmq.Message{Topic: *topic, Body: *body}, selector, 7 /*orderID*/, 3, |
| ) |
| if err != nil { |
| println("Send Orderly Error:", err) |
| } |
| fmt.Printf("send orderly result:%+v\n", r) |
| } |
| } |
| |
| func sendMessageOrderly(config *rocketmq.ProducerConfig) { |
| producer, err := rocketmq.NewProducer(config) |
| if err != nil { |
| fmt.Println("create Producer failed, error:", err) |
| return |
| } |
| |
| producer.Start() |
| defer producer.Shutdown() |
| |
| wg := sync.WaitGroup{} |
| wg.Add(*workerCount) |
| |
| workers := make([]worker, *workerCount) |
| for i := range workers { |
| workers[i].p = producer |
| workers[i].leftMsgCount = (int64)(*amount) |
| } |
| |
| for i := range workers { |
| go func(w *worker) { w.run(); wg.Done() }(&workers[i]) |
| } |
| |
| wg.Wait() |
| } |