chirpnest/mq.go

package main

import (
	"encoding/json"
	"log"

	"github.com/streadway/amqp"
)

func MQMainReceive() {
	var m ChatWarsMessage
	conn, err := amqp.Dial("amqp://" + cfg.Rabbit.User + ":" + cfg.Rabbit.Password + "@" + cfg.Rabbit.Host + "/" + cfg.Rabbit.Queue)
	failOnError(err, "MQMainReceive : Failed to connect to RabbitMQ")
	defer conn.Close()

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

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

	forever := make(chan bool)

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

			if err = json.Unmarshal(d.Body, &m); err != nil {
				logOnError(err, "MQMainReceive : Can't unmarshal")
			} else {
				putMsg(m)
			}
		}
	}()

	<-forever

}