| /* |
| 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 implements a producer with user custom interceptor. |
| package main |
| |
| import ( |
| "context" |
| "fmt" |
| "os" |
| |
| "github.com/apache/rocketmq-client-go/v2" |
| "github.com/apache/rocketmq-client-go/v2/primitive" |
| "github.com/apache/rocketmq-client-go/v2/producer" |
| ) |
| |
| func main() { |
| p, _ := rocketmq.NewProducer( |
| producer.WithNsResovler(primitive.NewPassthroughResolver([]string{"127.0.0.1:9876"})), |
| producer.WithRetry(2), |
| producer.WithInterceptor(UserFirstInterceptor(), UserSecondInterceptor()), |
| ) |
| err := p.Start() |
| if err != nil { |
| fmt.Printf("start producer error: %s", err.Error()) |
| os.Exit(1) |
| } |
| for i := 0; i < 10; i++ { |
| res, err := p.SendSync(context.Background(), primitive.NewMessage("test", |
| []byte("Hello RocketMQ Go Client!"))) |
| |
| if err != nil { |
| fmt.Printf("send message error: %s\n", err) |
| } else { |
| fmt.Printf("send message success: result=%s\n", res.String()) |
| } |
| } |
| err = p.Shutdown() |
| if err != nil { |
| fmt.Printf("shutdown producer error: %s", err.Error()) |
| } |
| } |
| |
| func UserFirstInterceptor() primitive.Interceptor { |
| return func(ctx context.Context, req, reply interface{}, next primitive.Invoker) error { |
| fmt.Printf("user first interceptor before invoke: req:%v\n", req) |
| err := next(ctx, req, reply) |
| fmt.Printf("user first interceptor after invoke: req: %v, reply: %v \n", req, reply) |
| return err |
| } |
| } |
| |
| func UserSecondInterceptor() primitive.Interceptor { |
| return func(ctx context.Context, req, reply interface{}, next primitive.Invoker) error { |
| fmt.Printf("user second interceptor before invoke: req: %v\n", req) |
| err := next(ctx, req, reply) |
| fmt.Printf("user second interceptor after invoke: req: %v, reply: %v \n", req, reply) |
| return err |
| } |
| } |