添加断线重连，断线通知

2 years ago · 36cd94bae1
parent 4aeae0f31c
commit 36cd94bae1
3 changed files with 125 additions and 16 deletions
--- a/go.mod
+++ b/go.mod
@ -2,4 +2,4 @@ module git.oa00.com/go/rabbitmq

 go 1.16

-require github.com/streadway/amqp v1.0.0
+require github.com/rabbitmq/amqp091-go v1.4.0
--- a/go.sum
+++ b/go.sum
@ -1,2 +1,40 @@
-github.com/streadway/amqp v1.0.0 h1:kuuDrUJFZL1QYL9hUNuCxNObNzB0bV/ZG5jV3RWAQgo=
-github.com/streadway/amqp v1.0.0/go.mod h1:AZpEONHx3DKn8O/DFsRAY58/XVQiIPMTMB1SddzLXVw=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rabbitmq/amqp091-go v1.4.0 h1:T2G+J9W9OY4p64Di23J6yH7tOkMocgnESvYeBjuG9cY=
+github.com/rabbitmq/amqp091-go v1.4.0/go.mod h1:JsV0ofX5f1nwOGafb8L5rBItt9GyhfQfcJj+oyz0dGg=
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+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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+go.uber.org/goleak v1.1.12 h1:gZAh5/EyT/HQwlpkCy6wTpqfH9H8Lz8zbm3dZh+OyzA=
+go.uber.org/goleak v1.1.12/go.mod h1:cwTWslyiVhfpKIDGSZEM2HlOvcqm+tG4zioyIeLoqMQ=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/rabbitmq.go
+++ b/rabbitmq.go
@ -1,32 +1,98 @@
 package rabbitmq

 import (
+	"errors"
 	"fmt"
-	"github.com/streadway/amqp"
+	amqp "github.com/rabbitmq/amqp091-go"
+	"sync"
+	"time"
 )

 var Rabbitmq = &rabbitmq{}

 type rabbitmq struct {
-	Conn *amqp.Connection
+	config Config
+	Conn   *amqp.Connection
+	mu     sync.RWMutex
+	ch     *amqp.Channel
+}
+
+type Config struct {
+	Host         string
+	Port         int
+	User         string
+	Password     string
+	ReConnSecond int  // 重连间隔秒数
+	ReConn       bool // 是否断线重连
 }

 // InitRabbitmq @Title 初始化rabbitmq
-func InitRabbitmq(host string, port int, user, password string) (err error) {
-	Rabbitmq.Conn, err = amqp.Dial(fmt.Sprintf("amqp://%s:%s@%s:%d/", user, password, host, port))
+func InitRabbitmq(config Config) (err error) {
+	Rabbitmq.config = config
+	return getConn()
+}
+
+// @Title 获取连接
+func getConn() (err error) {
+	Rabbitmq.Conn, err = amqp.Dial(fmt.Sprintf("amqp://%s:%s@%s:%d/", Rabbitmq.config.User, Rabbitmq.config.Password, Rabbitmq.config.Host, Rabbitmq.config.Port))
+	if err != nil {
+		return err
+	}
+	// 断线重连
+	if Rabbitmq.config.ReConn {
+		cc := make(chan *amqp.Error)
+		closeChan := Rabbitmq.Conn.NotifyClose(cc)
+		go func() {
+			select {
+			case <-closeChan:
+				if Rabbitmq.config.ReConn {
+					reConn()
+				}
+			}
+		}()
+	}
 	return
 }

+// @Title 自动重连
+func reConn() {
+	if err := getConn(); err != nil {
+		// 延时重连
+		time.Sleep(time.Duration(Rabbitmq.config.ReConnSecond) * time.Second)
+		reConn()
+	}
+}
+
+// GetChannel @Title 获取连接
+func (r *rabbitmq) GetChannel() (*amqp.Channel, error) {
+	if r.ch != nil && !r.ch.IsClosed() {
+		return r.ch, nil
+	}
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	if r.ch != nil && !r.ch.IsClosed() {
+		return r.ch, nil
+	}
+	if r.Conn == nil || r.Conn.IsClosed() {
+		return nil, errors.New("rabbitmq not connect")
+	}
+	var err error
+	r.ch, err = r.Conn.Channel()
+	if err != nil {
+		return nil, err
+	}
+	return r.ch, nil
+}
+
 // Publish @Title 发送消息
 // @Param exchangeName string true "指定发送的交换机"
 // @Param msg string true "发送消息内容"
 // @Param delay int64 false "延时发送秒数"
 func (r *rabbitmq) Publish(exchangeName, msg string, delay ...int64) error {
-	ch, err := r.Conn.Channel()
+	ch, err := r.GetChannel()
 	if err != nil {
 		return err
 	}
-	defer ch.Close()
 	header := amqp.Table{}
 	if len(delay) > 0 && delay[0] > 0 {
 		header["x-delay"] = delay[0] * 1000
@ -49,7 +115,7 @@ func (r *rabbitmq) Publish(exchangeName, msg string, delay ...int64) error {
 // @Param prefetchCount int 0 "预消费数量"
 // @Param callback func(amqp.Delivery)) true "回调处理"
 func (r *rabbitmq) Consume(queueName string, autoAck bool, prefetchCount int, callback func(amqp.Delivery)) error {
-	ch, err := r.Conn.Channel()
+	ch, err := r.GetChannel()
 	if err != nil {
 		return err
 	}
@ -73,17 +139,22 @@ func (r *rabbitmq) Consume(queueName string, autoAck bool, prefetchCount int, ca
 		return err
 	}

-	forever := make(chan bool)
-	go func() {
-		for d := range msgs {
+	cc := make(chan *amqp.Error)
+	closeChan := ch.NotifyClose(cc)
+
+	for {
+		select {
+		case d := <-msgs:
 			callback(d)
+		case <-closeChan:
+			// 连接断开
+			return errors.New("rabbitmq channel close")
 		}
-	}()
-	<-forever
-	return nil
+	}
 }

 // Close @Title 关闭资源
 func (r *rabbitmq) Close() {
+	Rabbitmq.config.ReConn = false
 	defer Rabbitmq.Conn.Close()
 }