| /* |
| 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" |
| "time" |
| |
| "github.com/apache/rocketmq-client-go/v2" |
| "github.com/apache/rocketmq-client-go/v2/consumer" |
| "github.com/apache/rocketmq-client-go/v2/primitive" |
| "github.com/apache/rocketmq-client-go/v2/rlog" |
| ) |
| |
| func main() { |
| c, err := rocketmq.NewPullConsumer( |
| consumer.WithGroupName("testGroup"), |
| consumer.WithNsResovler(primitive.NewPassthroughResolver([]string{"127.0.0.1:9876"})), |
| ) |
| if err != nil { |
| rlog.Fatal(fmt.Sprintf("fail to new pullConsumer: %s", err), nil) |
| } |
| err = c.Start() |
| if err != nil { |
| rlog.Fatal(fmt.Sprintf("fail to new pullConsumer: %s", err), nil) |
| } |
| |
| ctx := context.Background() |
| queue := primitive.MessageQueue{ |
| Topic: "TopicTest", |
| BrokerName: "", // replace with your broker name. otherwise, pull will failed. |
| QueueId: 0, |
| } |
| |
| offset := int64(0) |
| for { |
| resp, err := c.PullFrom(ctx, queue, offset, 10) |
| if err != nil { |
| if err == rocketmq.ErrRequestTimeout { |
| fmt.Printf("timeout \n") |
| time.Sleep(1 * time.Second) |
| continue |
| } |
| fmt.Printf("unexpectable err: %v \n", err) |
| return |
| } |
| if resp.Status == primitive.PullFound { |
| fmt.Printf("pull message success. nextOffset: %d \n", resp.NextBeginOffset) |
| for _, msg := range resp.GetMessageExts() { |
| fmt.Printf("pull msg: %v \n", msg) |
| } |
| } |
| offset = resp.NextBeginOffset |
| } |
| } |