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package main
import (
amqp ""
func failOnError(err error, msg string) {
if err != nil {
log.Panicf("%s: %s", msg, err)
func main() {
conn, err := amqp.Dial("amqp://guest:guest@localhost:5672/")
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(
"task_queue", // name
true, // durable
false, // delete when unused
false, // exclusive
false, // no-wait
nil, // arguments
failOnError(err, "Failed to declare a queue")
err = ch.Qos(
1, // prefetch count
0, // prefetch size
false, // global
failOnError(err, "Failed to set QoS")
msgs, err := ch.Consume(
q.Name, // queue
"", // consumer
false, // 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 {
log.Printf("Received a message: %s", d.Body)
dotCount := bytes.Count(d.Body, []byte("."))
t := time.Duration(dotCount)
time.Sleep(t * time.Second)
log.Printf(" [*] Waiting for messages. To exit press CTRL+C")