Akka/Scala example source code file (RemoteDeliverySpec.scala)

This example Akka source code file (RemoteDeliverySpec.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Akka and Scala source code examples by using tags.

All credit for the original source code belongs to akka.io; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Akka tags/keywords

actor, akka, concurrent, implicitsender, int, letter, nil, postman, remotedeliverymultijvmnode1, remotedeliverymultijvmnode2, remotedeliverymultijvmspec, remotedeliveryspec, string, test, testing, time

The RemoteDeliverySpec.scala Akka example source code

/**
 * Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com>
 */
package akka.remote

import scala.language.postfixOps

import scala.concurrent.duration._
import com.typesafe.config.ConfigFactory
import akka.actor.Actor
import akka.actor.ActorRef
import akka.actor.Props
import akka.remote.testconductor.RoleName
import akka.remote.testkit.MultiNodeConfig
import akka.remote.testkit.MultiNodeSpec
import akka.remote.testkit.STMultiNodeSpec
import akka.testkit._
import akka.actor.ActorIdentity
import akka.actor.Identify

object RemoteDeliveryMultiJvmSpec extends MultiNodeConfig {
  val first = role("first")
  val second = role("second")
  val third = role("third")

  commonConfig(debugConfig(on = false).withFallback(ConfigFactory.parseString("akka.loglevel=INFO")))

  final case class Letter(n: Int, route: List[ActorRef])

  class Postman extends Actor {
    def receive = {
      case Letter(n, route) ⇒ route.head ! Letter(n, route.tail)
    }
  }

}

class RemoteDeliveryMultiJvmNode1 extends RemoteDeliverySpec
class RemoteDeliveryMultiJvmNode2 extends RemoteDeliverySpec
class RemoteDeliveryMultiJvmNode3 extends RemoteDeliverySpec

abstract class RemoteDeliverySpec
  extends MultiNodeSpec(RemoteDeliveryMultiJvmSpec)
  with STMultiNodeSpec with ImplicitSender {

  import RemoteDeliveryMultiJvmSpec._

  override def initialParticipants = roles.size

  def identify(role: RoleName, actorName: String): ActorRef = within(10 seconds) {
    system.actorSelection(node(role) / "user" / actorName) ! Identify(actorName)
    expectMsgType[ActorIdentity].ref.get
  }

  "Remoting with TCP" must {

    "not drop messages under normal circumstances" taggedAs LongRunningTest in {
      system.actorOf(Props[Postman], "postman-" + myself.name)
      enterBarrier("actors-started")

      runOn(first) {
        val p1 = identify(first, "postman-first")
        val p2 = identify(second, "postman-second")
        val p3 = identify(third, "postman-third")
        val route = p2 :: p3 :: p2 :: p3 :: testActor :: Nil

        for (n ← 1 to 500) {
          p1 ! Letter(n, route)
          expectMsg(5.seconds, Letter(n, Nil))
          // in case the loop count is increased it is good with some progress feedback
          if (n % 10000 == 0) log.info("Passed [{}]", n)
        }
      }

      enterBarrier("after-1")
    }

  }
}