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go-rabbit-mq

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简介

rabbitmq-logo

最近还需要使用rabbitmq需要使用golang来实现。

如何创建一个连接

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encodedPassword := url.QueryEscape(viper.GetString("rabbitmq.password"))
 // SSL,
tlsConfig := &tls.Config{InsecureSkipVerify: true}
dsn := fmt.Sprintf(
	"amqps://%s:%s@%s:%d/",
	viper.GetString("rabbitmq.user"),
	encodedPassword,
	viper.GetString("rabbitmq.host"),
	viper.GetInt("rabbitmq.port"),
)
conn, err := amqp.DialTLS(dsn,tlsConfig)

if err != nil {
	logrus.Warnf("GenerateMQ fail err: %v", err.Error())
	return nil, err
}

logrus.Infoln("GenerateMQ success!")
return conn, nil

发送

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func main() {
	conn, err := mqutils.GenerateMQ()
	failOnError(err, "Failed to connect to RabbitMQ")
	defer conn.Close()

	ch, err := conn.Channel()
	failOnError(err, "Failed to open a channel")
	defer ch.Close()
	q, err := ch.QueueDeclare(
		"hello", // name
		false,   // durable
		false,   // delete when unused
		false,   // exclusive
		false,   // no-wait
		nil,     // arguments
	)
	failOnError(err, "Failed to declare a queue")

	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	body := "Hello World!"
	err = ch.PublishWithContext(ctx,
		"",     // exchange
		q.Name, // routing key
		false,  // mandatory
		false,  // immediate
		amqp.Publishing{
			ContentType: "text/plain",
			Body:        []byte(body),
		})
	failOnError(err, "Failed to publish a message")
	logrus.Printf(" [x] Sent %s\n", body)
}

接受消息

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func main() {
	conn, err := mqutils.GenerateMQ()
	failOnError(err, "Failed to connect to RabbitMQ")
	defer conn.Close()

	ch, err := conn.Channel()
	failOnError(err, "Failed to open a channel")
	defer ch.Close()

	q, err := ch.QueueDeclare(
		"hello", // name
		false,   // durable
		false,   // delete when unused
		false,   // exclusive
		false,   // no-wait
		nil,     // arguments
	)
	failOnError(err, "Failed to declare a queue")

	msgs, err := ch.Consume(
		q.Name, // queue
		"",     // consumer
		true,   // auto-ack
		false,  // exclusive
		false,  // no-local
		false,  // no-wait
		nil,    // args
	)
	failOnError(err, "Failed to register a consumer")

	var forever chan struct{}

	go func() {
		for d := range msgs {
			logrus.Printf("Received a message: %s", d.Body)
		}
	}()

	logrus.Printf(" [*] Waiting for messages. To exit press CTRL+C")
	<-forever
}

参考