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

This example Akka source code file (AddressTerminatedTopicBenchSpec.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, actorref, addressterminated, addressterminatedtopicbenchspec, akka, akkaspec, concurrent, props, stopping, subscribe, subscriber, test, testing, time, unit

The AddressTerminatedTopicBenchSpec.scala Akka example source code

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

import scala.concurrent.duration._
import akka.actor.Actor
import akka.actor.ActorRef
import akka.actor.ActorSystem
import akka.actor.Address
import akka.actor.Props
import akka.testkit._

object AddressTerminatedTopicBenchSpec {

  class Subscriber(testActor: ActorRef) extends Actor {
    AddressTerminatedTopic(context.system).subscribe(self)
    testActor ! "started"

    override def postStop(): Unit = {
      AddressTerminatedTopic(context.system).unsubscribe(self)
    }

    def receive = Actor.emptyBehavior
  }
}

@org.junit.runner.RunWith(classOf[org.scalatest.junit.JUnitRunner])
class AddressTerminatedTopicBenchSpec extends AkkaSpec("akka.loglevel=INFO") {
  import AddressTerminatedTopicBenchSpec._

  "Subscribe and unsubscribe of AddressTerminated" must {

    "be quick" in {
      val sys = ActorSystem(system.name + "2", system.settings.config)
      try {
        val num = 20000

        val t1 = System.nanoTime()
        val p = Props(classOf[Subscriber], testActor)
        val subscribers = Vector.fill(num)(sys.actorOf(p))
        receiveN(num, 10.seconds)
        log.info("Starting {} actors took {} ms", num, (System.nanoTime() - t1).nanos.toMillis)

        val t2 = System.nanoTime()
        shutdown(sys, 10.seconds, verifySystemShutdown = true)
        log.info("Stopping {} actors took {} ms", num, (System.nanoTime() - t2).nanos.toMillis)
      } finally {
        if (!sys.isTerminated) shutdown(sys)
      }
    }

  }
}