PublishSubcribe example doesn't work

[ebracci]

Hi, I am trying to test the following example but it doesn't work.

object PublishSubscribe extends App {
  implicit val system = ActorSystem()
  val factory = new ConnectionFactory()
  val connection = system.actorOf(ConnectionActor.props(factory), "akka-rabbitmq")
  val exchange = "amq.fanout"


  def setupPublisher(channel: Channel, self: ActorRef) {
    val queue = channel.queueDeclare().getQueue
    println(channel)
    channel.queueBind(queue, exchange, "")
  }

  connection ! CreateChannel(ChannelActor.props(setup), Some("publisher"))

  def setupSubscriber(channel: Channel, self: ActorRef) {
    val queue = channel.queueDeclare().getQueue
    println(channel)
    channel.queueBind(queue, exchange, "")
    val consumer = new DefaultConsumer(channel) {
      override def handleDelivery(consumerTag: String, envelope: Envelope, properties: BasicProperties, body: Array[Byte]) {
        println("received: " + fromBytes(body))
      }
    }
    channel.basicConsume(queue, true, consumer)
  }

  def setup(channel: Channel, self: ActorRef): Unit = {
    setupPublisher(channel, self)
    setupSubscriber(channel, self)
  }

  connection ! CreateChannel(ChannelActor.props(setup), Some("subscriber"))

  Future {
    def loop(n: Long) {
      val publisher = system.actorSelection("/user/rabbitmq/publisher")

      def publish(channel: Channel) {
        println("publish")
        channel.basicPublish(exchange, "", null, toBytes(n))
      }

      publisher ! ChannelMessage(publish, dropIfNoChannel = false)

      Thread.sleep(1000)
      loop(n + 1)
    }

    loop(0)
  }

  def fromBytes(x: Array[Byte]) = new String(x, "UTF-8")

  def toBytes(x: Long) = x.toString.getBytes("UTF-8")
}

The publish method is not called by

publisher ! ChannelMessage(publish, dropIfNoChannel = false)

[SergeKireev]

Not working for me neither, ChannelMessages get sent to dead letter

[RonaldKruizinga]

Try replacing val publisher = system.actorSelection("/user/rabbitmq/publisher")

with

val publisher = system.actorSelection("/user/akka-rabbitmq/publisher")

That fixed it for me

[gertjana]

Indeed the connection Actor is created with the name "akka-rabbitmq" at the top but referenced as 'rabbitmq' below.

i've update the example. thx for reporting and providing the fix ;)