关于golang监听rabbitmq消息队列任务断线自动重连接的问题

package main
import (
    "fmt"
    "github.com/ichunt2019/golang-rbmq-sl/utils/rabbitmq"
)
type RecvPro struct {
}
//// 实现消费者 消费消息失败 自动进入延时尝试  尝试3次之后入库db
/*
返回值 error 为nil  则表示该消息消费成功
否则消息会进入ttl延时队列  重复尝试消费3次
3次后消息如果还是失败 消息就执行失败  进入告警 FailAction
 */
func (t *RecvPro) Consumer(dataByte []byte) error {
    //time.Sleep(500*time.Microsecond)
    //return errors.New("顶顶顶顶")
    fmt.Println(string(dataByte))
    //time.Sleep(1*time.Second)
    return nil
//消息已经消费3次 失败了 请进行处理
如果消息 消费3次后 仍然失败  此处可以根据情况 对消息进行告警提醒 或者 补偿  入库db  钉钉告警等等
func (t *RecvPro) FailAction(err error,dataByte []byte) error {
    fmt.Println(err)
    fmt.Println("任务处理失败了，我要进入db日志库了")
    fmt.Println("任务处理失败了，发送钉钉消息通知主人")
func main() {
    t := &RecvPro{}
    //rabbitmq.Recv(rabbitmq.QueueExchange{
    //    "a_test_0001",
    //    "",
    //    "amqp://guest:guest@192.168.2.232:5672/",
    //},t,5)
    /*
        runNums: 表示任务并发处理数量  一般建议 普通任务1-3    就可以了
     */
    err := rabbitmq.Recv(rabbitmq.QueueExchange{
        "a_test_0001",
        "hello_go",
        "direct",
        "amqp://guest:guest@192.168.1.169:5672/",
    },t,4)
    if(err != nil){
        fmt.Println(err)
    }

package rabbitmq

import (
    "errors"
    "strconv"
    "time"
    //"errors"
    "fmt"
    "github.com/streadway/amqp"
    "log"
)
// 定义全局变量,指针类型
var mqConn *amqp.Connection
var mqChan *amqp.Channel
// 定义生产者接口
type Producer interface {
    MsgContent() string
}
type RetryProducer interface {
// 定义接收者接口
type Receiver interface {
    Consumer([]byte)    error
    FailAction(error , []byte)  error
// 定义RabbitMQ对象
type RabbitMQ struct {
    connection *amqp.Connection
    Channel *amqp.Channel
    dns string
    QueueName   string            // 队列名称
    RoutingKey  string            // key名称
    ExchangeName string           // 交换机名称
    ExchangeType string           // 交换机类型
    producerList []Producer
    retryProducerList []RetryProducer
    receiverList []Receiver
// 定义队列交换机对象
type QueueExchange struct {
    QuName  string           // 队列名称
    RtKey   string           // key值
    ExName  string           // 交换机名称
    ExType  string           // 交换机类型
    Dns     string              //链接地址
// 链接rabbitMQ
func (r *RabbitMQ)MqConnect() (err error){
    mqConn, err = amqp.Dial(r.dns)
    r.connection = mqConn   // 赋值给RabbitMQ对象
    if err != nil {
        fmt.Printf("rbmq链接失败  :%s \n", err)
    }
    return
// 关闭mq链接
func (r *RabbitMQ)CloseMqConnect() (err error){
    err = r.connection.Close()
    if err != nil{
        fmt.Printf("关闭mq链接失败  :%s \n", err)
func (r *RabbitMQ)MqOpenChannel() (err error){
    mqConn := r.connection
    r.Channel, err = mqConn.Channel()
    //defer mqChan.Close()
        fmt.Printf("MQ打开管道失败:%s \n", err)
    return err
func (r *RabbitMQ)CloseMqChannel() (err error){
    r.Channel.Close()
// 创建一个新的操作对象
func NewMq(q QueueExchange) RabbitMQ {
    return RabbitMQ{
        QueueName:q.QuName,
        RoutingKey:q.RtKey,
        ExchangeName: q.ExName,
        ExchangeType: q.ExType,
        dns:q.Dns,
func (mq *RabbitMQ) sendMsg (body string) (err error)  {
    err = mq.MqOpenChannel()
    ch := mq.Channel
        log.Printf("Channel err  :%s \n", err)
    defer mq.Channel.Close()
    if mq.ExchangeName != "" {
        if mq.ExchangeType == ""{
            mq.ExchangeType = "direct"
        }
        err =  ch.ExchangeDeclare(mq.ExchangeName, mq.ExchangeType, true, false, false, false, nil)
        if err != nil {
            log.Printf("ExchangeDeclare err  :%s \n", err)
    // 用于检查队列是否存在,已经存在不需要重复声明
    _, err = ch.QueueDeclare(mq.QueueName, true, false, false, false, nil)
        log.Printf("QueueDeclare err :%s \n", err)
    // 绑定任务
    if mq.RoutingKey != "" && mq.ExchangeName != "" {
        err = ch.QueueBind(mq.QueueName, mq.RoutingKey, mq.ExchangeName, false, nil)
            log.Printf("QueueBind err :%s \n", err)
    if mq.ExchangeName != "" && mq.RoutingKey != ""{
        err = mq.Channel.Publish(
            mq.ExchangeName,     // exchange
            mq.RoutingKey, // routing key
            false,  // mandatory
            false,  // immediate
            amqp.Publishing {
                ContentType: "text/plain",
                Body:        []byte(body),
            })
    }else{
            "",     // exchange
            mq.QueueName, // routing key
/*
发送延时消息
 */
func (mq *RabbitMQ)sendDelayMsg(body string,ttl int64) (err error){
    err =mq.MqOpenChannel()
            return
    if ttl <= 0{
        return errors.New("发送延时消息，ttl参数是必须的")
    table := make(map[string]interface{},3)
    table["x-dead-letter-routing-key"] = mq.RoutingKey
    table["x-dead-letter-exchange"] = mq.ExchangeName
    table["x-message-ttl"] = ttl*1000
    //fmt.Printf("%+v",table)
    //fmt.Printf("%+v",mq)
    ttlstring := strconv.FormatInt(ttl,10)
    queueName := fmt.Sprintf("%s_delay_%s",mq.QueueName ,ttlstring)
    routingKey := fmt.Sprintf("%s_delay_%s",mq.QueueName ,ttlstring)
    _, err = ch.QueueDeclare(queueName, true, false, false, false, table)
        return
    if routingKey != "" && mq.ExchangeName != "" {
        err = ch.QueueBind(queueName, routingKey, mq.ExchangeName, false, nil)
    header := make(map[string]interface{},1)
    header["retry_nums"] = 0
    var ttl_exchange string
    var ttl_routkey string
    if(mq.ExchangeName != "" ){
        ttl_exchange = mq.ExchangeName
        ttl_exchange = ""
    if mq.RoutingKey != "" && mq.ExchangeName != ""{
        ttl_routkey = routingKey
        ttl_routkey = queueName
    err = mq.Channel.Publish(
        ttl_exchange,     // exchange
        ttl_routkey, // routing key
        false,  // mandatory
        false,  // immediate
        amqp.Publishing {
            ContentType: "text/plain",
            Body:        []byte(body),
            Headers:header,
        })
func (mq *RabbitMQ) sendRetryMsg (body string,retry_nums int32,args ...string)  {
    err :=mq.MqOpenChannel()
    //原始路由key
    oldRoutingKey := args[0]
    //原始交换机名
    oldExchangeName := args[1]
    table["x-dead-letter-routing-key"] = oldRoutingKey
    if oldExchangeName != "" {
        table["x-dead-letter-exchange"] = oldExchangeName
        mq.ExchangeName = ""
        table["x-dead-letter-exchange"] = ""
    table["x-message-ttl"] = int64(20000)
    _, err = ch.QueueDeclare(mq.QueueName, true, false, false, false, table)
    header["retry_nums"] = retry_nums + int32(1)
        ttl_routkey = mq.RoutingKey
        ttl_routkey = mq.QueueName
    //fmt.Printf("ttl_exchange:%s,ttl_routkey:%s \n",ttl_exchange,ttl_routkey)
        fmt.Printf("MQ任务发送失败:%s \n", err)
// 监听接收者接收任务 消费者
func (mq *RabbitMQ) ListenReceiver(receiver Receiver) {
    // 获取消费通道,确保rabbitMQ一个一个发送消息
    err =  ch.Qos(1, 0, false)
    msgList, err :=  ch.Consume(mq.QueueName, "", false, false, false, false, nil)
        log.Printf("Consume err :%s \n", err)
    for msg := range msgList {
        retry_nums,ok := msg.Headers["retry_nums"].(int32)
        if(!ok){
            retry_nums = int32(0)
        // 处理数据
        err := receiver.Consumer(msg.Body)
        if err!=nil {
            //消息处理失败 进入延时尝试机制
            if retry_nums < 3{
                fmt.Println(string(msg.Body))
                fmt.Printf("消息处理失败 消息开始进入尝试  ttl延时队列 \n")
                retry_msg(msg.Body,retry_nums,QueueExchange{
                        mq.QueueName,
                        mq.RoutingKey,
                        mq.ExchangeName,
                        mq.ExchangeType,
                        mq.dns,
                    })
            }else{
                //消息失败 入库db
                fmt.Printf("消息处理3次后还是失败了 入库db 钉钉告警 \n")
                receiver.FailAction(err,msg.Body)
            }
            err = msg.Ack(true)
            if err != nil {
                fmt.Printf("确认消息未完成异常:%s \n", err)
        }else {
            // 确认消息,必须为false
                fmt.Printf("消息消费ack失败 err :%s \n", err)
//消息处理失败之后 延时尝试
func retry_msg(msg []byte,retry_nums int32,queueExchange QueueExchange){
    //原始队列名称 交换机名称
    oldQName := queueExchange.QuName
    oldExchangeName := queueExchange.ExName
    oldRoutingKey := queueExchange.RtKey
    if oldRoutingKey == "" || oldExchangeName == ""{
        oldRoutingKey = oldQName
    if queueExchange.QuName != "" {
        queueExchange.QuName = queueExchange.QuName + "_retry_3";
    if queueExchange.RtKey != "" {
        queueExchange.RtKey = queueExchange.RtKey + "_retry_3";
        queueExchange.RtKey = queueExchange.QuName + "_retry_3";
//fmt.Printf("%+v",queueExchange)
    mq := NewMq(queueExchange)
    _ = mq.MqConnect()
    defer func(){
        _ = mq.CloseMqConnect()
    }()
    //fmt.Printf("%+v",queueExchange)
    mq.sendRetryMsg(string(msg),retry_nums,oldRoutingKey,oldExchangeName)
func Send(queueExchange QueueExchange,msg string) (err error){
    err = mq.MqConnect()
        mq.CloseMqConnect()
    err = mq.sendMsg(msg)
//发送延时消息
func SendDelay(queueExchange QueueExchange,msg string,ttl int64)(err error){
    err = mq.sendDelayMsg(msg,ttl)
runNums  开启并发执行任务数量
func Recv(queueExchange QueueExchange,receiver Receiver,runNums int) (err error){
    //链接rabbitMQ
    if(err != nil){
    //rbmq断开链接后 协程退出释放信号
    taskQuit:= make(chan struct{}, 1)
    //尝试链接rbmq
    tryToLinkC := make(chan struct{}, 1)
    //开始执行任务
    for i:=1;i<=runNums;i++{
        go Recv2(mq,receiver,taskQuit);
    //如果rbmq断开连接后 尝试重新建立链接
    var tryToLink = func() {
        for {
            err = mq.MqConnect()
            if(err == nil){
                tryToLinkC <- struct{}{}
                break
            time.Sleep(time.Second * 10)
    for{
        select {
        case <- taskQuit ://rbmq断开连接后 开始尝试重新建立链接
             go tryToLink()
            <-tryToLinkC //建立链接成功后 重新开启协程执行任务
            fmt.Println("重新开启新的协程执行任务")
            go Recv2(mq,receiver,taskQuit);
        time.Sleep(time.Millisecond*100)
func Recv2(mq RabbitMQ,receiver Receiver,taskQuit chan<- struct{}){
        defer func() {
            fmt.Println("rbmq链接失败,协程任务退出~~~~~~~~~~~~~~~~~~~~")
            taskQuit <- struct{}{}
        }()
        // 验证链接是否正常
        err := mq.MqOpenChannel()
        if(err != nil){
        mq.ListenReceiver(receiver)
type retryPro struct {
    msgContent   string

/*
runNums  开启并发执行任务数量
 */
func Recv(queueExchange QueueExchange,receiver Receiver,runNums int) (err error){
    mq := NewMq(queueExchange)
    //链接rabbitMQ
    err = mq.MqConnect()
    if(err != nil){
        return
    }
    //rbmq断开链接后 协程退出释放信号
    taskQuit:= make(chan struct{}, 1)
    //尝试链接rbmq
    tryToLinkC := make(chan struct{}, 1)
    //开始执行任务
    for i:=1;i<=runNums;i++{
        go Recv2(mq,receiver,taskQuit);

    //如果rbmq断开连接后 尝试重新建立链接
    var tryToLink = func() {
        for {
            err = mq.MqConnect()
            if(err == nil){
                tryToLinkC <- struct{}{}
                break
            }
            time.Sleep(time.Second * 10)
        }
    for{
        select {
        case <- taskQuit ://rbmq断开连接后 开始尝试重新建立链接
             go tryToLink()
            <-tryToLinkC //建立链接成功后 重新开启协程执行任务
            fmt.Println("重新开启新的协程执行任务")
            go Recv2(mq,receiver,taskQuit);
        time.Sleep(time.Millisecond*100)
}
func Recv2(mq RabbitMQ,receiver Receiver,taskQuit chan<- struct{}){
        defer func() {
            fmt.Println("rbmq链接失败,协程任务退出~~~~~~~~~~~~~~~~~~~~")
            taskQuit <- struct{}{}
            return
        }()
        // 验证链接是否正常
        err := mq.MqOpenChannel()
        if(err != nil){
        mq.ListenReceiver(receiver)