What would be the best way?

[juanstiza]

Im trying to:

1. Create channel,
2. Bind things,
3. Publish a list of messages,
4. Close everything and wait for it to close,
5. Shut down system.

Here is my code:

import akka.actor.{ActorRef, ActorSystem}
import com.newmotion.akka.rabbitmq._

import scala.concurrent.duration._
import scala.concurrent.{Await, ExecutionContext}

val queueName = "my-queue"
val exchange = "my-queue"
val cf: ConnectionFactory = new ConnectionFactory()

val sys = ActorSystem("queue-system")
implicit val ec: ExecutionContext = sys.dispatcher
val conn = sys.actorOf(ConnectionActor.props(cf), "connection")

def setupProducer(channel: Channel, self: ActorRef) {
  val queue = channel.queueDeclare(queueName, true, false, false, java.util.Collections.emptyMap[String, AnyRef]()).getQueue
  channel.exchangeDeclare(exchange, "direct", true)
  channel.queueBind(queue, exchange, "")
}

val channel = conn.createChannel(ChannelActor.props(setupProducer), Some("publisher"))

val events = List("1", "2", "3")
events.map(_.getBytes) map { data =>
  channel ! ChannelMessage((c: Channel) => {
    c.basicPublish("",queueName, null, data)
  })
}

sys stop channel
sys stop conn
Await.result((for {
  c <- sys.whenTerminated
} yield c), 30 seconds)

I'm getting these errors:

[INFO] [08/07/2017 14:51:56.472] [queue-system-akka.actor.default-dispatcher-4] [akka://queue-system/user/connection/publisher] Message [com.newmotion.akka.rabbitmq.ChannelMessage] from Actor[akka://queue-system/deadLetters] to Actor[akka://queue-system/user/connection/publisher#1004003557] was not delivered. [1] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
[INFO] [08/07/2017 14:51:56.472] [queue-system-akka.actor.default-dispatcher-4] [akka://queue-system/user/connection/publisher] Message [com.newmotion.akka.rabbitmq.AmqpShutdownSignal] from Actor[akka://queue-system/user/connection/publisher#1004003557] to Actor[akka://queue-system/user/connection/publisher#1004003557] was not delivered. [2] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
[INFO] [08/07/2017 14:51:56.474] [queue-system-akka.actor.default-dispatcher-3] [akka://queue-system/user/connection] closing connection to amqp://user@localhost:5672//
[INFO] [08/07/2017 14:51:56.479] [queue-system-akka.actor.default-dispatcher-2] [akka://queue-system/user/connection] Message [com.newmotion.akka.rabbitmq.AmqpShutdownSignal] from Actor[akka://queue-system/user/connection#-1778410342] to Actor[akka://queue-system/user/connection#-1778410342] was not delivered. [3] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.

What is the best way to accomplish this? I guess when I want to shut down, the connection hasn't event published the messages, is there a way of waiting for it?

Thanks!!