Deprecate actorFor in favor of ActorSelection, see #3074
* Deprecate all actorFor methods * resolveActorRef in provider * Identify auto receive message * Support ActorPath in actorSelection * Support remote actor selections * Additional tests of actor selection * Update tests (keep most actorFor tests) * Update samples to use actorSelection * Updates to documentation * Migration guide, including motivation
This commit is contained in:
Patrik Nordwall
parent
641e499cc4
commit
887af975ae
80 changed files with 1496 additions and 619 deletions
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@ -9,7 +9,6 @@ import akka.testkit._
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import scala.concurrent.duration._
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import scala.concurrent.Await
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import akka.pattern.ask
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import java.net.MalformedURLException
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object ActorLookupSpec {
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@ -285,56 +284,4 @@ class ActorLookupSpec extends AkkaSpec with DefaultTimeout {
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}
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"An ActorSelection" must {
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"send messages directly" in {
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ActorSelection(c1, "") ! GetSender(testActor)
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expectMsg(system.deadLetters)
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lastSender must be === c1
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}
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"send messages with correct sender" in {
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implicit val sender = c1
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ActorSelection(c21, "../../*") ! GetSender(testActor)
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val actors = Set() ++ receiveWhile(messages = 2) {
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case `c1` ⇒ lastSender
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}
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actors must be === Set(c1, c2)
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expectNoMsg(1 second)
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}
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"drop messages which cannot be delivered" in {
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implicit val sender = c2
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ActorSelection(c21, "../../*/c21") ! GetSender(testActor)
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val actors = receiveWhile(messages = 2) {
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case `c2` ⇒ lastSender
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}
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actors must be === Seq(c21)
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expectNoMsg(1 second)
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}
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}
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"An ActorPath" must {
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"support parsing its String rep" in {
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val path = system.actorFor("user").path
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ActorPath.fromString(path.toString) must be(path)
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}
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"support parsing remote paths" in {
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val remote = "akka://sys@host:1234/some/ref"
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ActorPath.fromString(remote).toString must be(remote)
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}
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"throw exception upon malformed paths" in {
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intercept[MalformedURLException] { ActorPath.fromString("") }
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intercept[MalformedURLException] { ActorPath.fromString("://hallo") }
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intercept[MalformedURLException] { ActorPath.fromString("s://dd@:12") }
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intercept[MalformedURLException] { ActorPath.fromString("s://dd@h:hd") }
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intercept[MalformedURLException] { ActorPath.fromString("a://l:1/b") }
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}
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}
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}
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@ -5,10 +5,29 @@ package akka.actor
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import org.scalatest.WordSpec
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import org.scalatest.matchers.MustMatchers
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import java.net.MalformedURLException
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class ActorPathSpec extends WordSpec with MustMatchers {
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"ActorPath" must {
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"An ActorPath" must {
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"support parsing its String rep" in {
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val path = RootActorPath(Address("akka.tcp", "mysys")) / "user"
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ActorPath.fromString(path.toString) must be(path)
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}
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"support parsing remote paths" in {
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val remote = "akka://sys@host:1234/some/ref"
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ActorPath.fromString(remote).toString must be(remote)
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}
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"throw exception upon malformed paths" in {
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intercept[MalformedURLException] { ActorPath.fromString("") }
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intercept[MalformedURLException] { ActorPath.fromString("://hallo") }
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intercept[MalformedURLException] { ActorPath.fromString("s://dd@:12") }
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intercept[MalformedURLException] { ActorPath.fromString("s://dd@h:hd") }
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intercept[MalformedURLException] { ActorPath.fromString("a://l:1/b") }
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}
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"create correct toString" in {
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val a = Address("akka.tcp", "mysys")
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@ -18,6 +37,10 @@ class ActorPathSpec extends WordSpec with MustMatchers {
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(RootActorPath(a) / "user" / "foo" / "bar").toString must be("akka.tcp://mysys/user/foo/bar")
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}
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"have correct path elements" in {
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(RootActorPath(Address("akka.tcp", "mysys")) / "user" / "foo" / "bar").elements.toSeq must be(Seq("user", "foo", "bar"))
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}
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"create correct toStringWithAddress" in {
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val local = Address("akka.tcp", "mysys")
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val a = local.copy(host = Some("aaa"), port = Some(2552))
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@ -0,0 +1,292 @@
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/**
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* Copyright (C) 2009-2013 Typesafe Inc. <http://www.typesafe.com>
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*/
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package akka.actor
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import language.postfixOps
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import akka.testkit._
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import scala.concurrent.duration._
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import scala.concurrent.Await
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import akka.pattern.ask
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object ActorSelectionSpec {
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case class Create(child: String)
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trait Query
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case class SelectString(path: String) extends Query
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case class SelectPath(path: ActorPath) extends Query
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case class GetSender(to: ActorRef) extends Query
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val p = Props[Node]
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class Node extends Actor {
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def receive = {
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case Create(name) ⇒ sender ! context.actorOf(p, name)
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case SelectString(path) ⇒ sender ! context.actorSelection(path)
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case SelectPath(path) ⇒ sender ! context.actorSelection(path)
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case GetSender(ref) ⇒ ref ! sender
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}
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}
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}
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@org.junit.runner.RunWith(classOf[org.scalatest.junit.JUnitRunner])
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class ActorSelectionSpec extends AkkaSpec("akka.loglevel=DEBUG") with DefaultTimeout {
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import ActorSelectionSpec._
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val c1 = system.actorOf(p, "c1")
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val c2 = system.actorOf(p, "c2")
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val c21 = Await.result((c2 ? Create("c21")).mapTo[ActorRef], timeout.duration)
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val sysImpl = system.asInstanceOf[ActorSystemImpl]
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val user = sysImpl.guardian
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val syst = sysImpl.systemGuardian
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val root = sysImpl.lookupRoot
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def empty(path: String) =
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new EmptyLocalActorRef(sysImpl.provider, path match {
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case RelativeActorPath(elems) ⇒ sysImpl.lookupRoot.path / elems
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}, system.eventStream)
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val idProbe = TestProbe()
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def identify(selection: ActorSelection): Option[ActorRef] = {
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selection.tell(Identify(selection), idProbe.ref)
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idProbe.expectMsgPF() {
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case ActorIdentity(`selection`, ref) ⇒ ref
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}
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}
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def identify(path: String): Option[ActorRef] = identify(system.actorSelection(path))
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def identify(path: ActorPath): Option[ActorRef] = identify(system.actorSelection(path))
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def askNode(node: ActorRef, query: Query): Option[ActorRef] = {
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Await.result(node ? query, timeout.duration) match {
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case ref: ActorRef ⇒ Some(ref)
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case selection: ActorSelection ⇒ identify(selection)
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}
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}
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"An ActorSystem" must {
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"select actors by their path" in {
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identify(c1.path) must be === Some(c1)
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identify(c2.path) must be === Some(c2)
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identify(c21.path) must be === Some(c21)
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identify(system / "c1") must be === Some(c1)
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identify(system / "c2") must be === Some(c2)
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identify(system / "c2" / "c21") must be === Some(c21)
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identify(system child "c2" child "c21") must be === Some(c21) // test Java API
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identify(system / Seq("c2", "c21")) must be === Some(c21)
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import scala.collection.JavaConverters._
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identify(system descendant Seq("c2", "c21").asJava) // test Java API
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}
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"select actors by their string path representation" in {
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identify(c1.path.toString) must be === Some(c1)
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identify(c2.path.toString) must be === Some(c2)
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identify(c21.path.toString) must be === Some(c21)
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identify(c1.path.elements.mkString("/", "/", "")) must be === Some(c1)
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identify(c2.path.elements.mkString("/", "/", "")) must be === Some(c2)
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identify(c21.path.elements.mkString("/", "/", "")) must be === Some(c21)
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}
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"take actor incarnation into account when comparing actor references" in {
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val name = "abcdefg"
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val a1 = system.actorOf(p, name)
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watch(a1)
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a1 ! PoisonPill
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expectMsgType[Terminated].actor must be === a1
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// not equal because it's terminated
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identify(a1.path) must be === None
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val a2 = system.actorOf(p, name)
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a2.path must be(a1.path)
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a2.path.toString must be(a1.path.toString)
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a2 must not be (a1)
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a2.toString must not be (a1.toString)
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watch(a2)
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a2 ! PoisonPill
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expectMsgType[Terminated].actor must be === a2
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}
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"select actors by their root-anchored relative path" in {
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identify(c1.path.elements.mkString("/", "/", "")) must be === Some(c1)
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identify(c2.path.elements.mkString("/", "/", "")) must be === Some(c2)
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identify(c21.path.elements.mkString("/", "/", "")) must be === Some(c21)
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}
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"select actors by their relative path" in {
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identify(c1.path.elements.mkString("/")) must be === Some(c1)
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identify(c2.path.elements.mkString("/")) must be === Some(c2)
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identify(c21.path.elements.mkString("/")) must be === Some(c21)
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}
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"select system-generated actors" in {
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identify("/user") must be === Some(user)
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identify("/deadLetters") must be === Some(system.deadLetters)
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identify("/system") must be === Some(syst)
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identify(syst.path) must be === Some(syst)
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identify(syst.path.elements.mkString("/", "/", "")) must be === Some(syst)
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identify("/") must be === Some(root)
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identify("") must be === Some(root)
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identify(RootActorPath(root.path.address)) must be === Some(root)
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identify("..") must be === Some(root)
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identify(root.path) must be === Some(root)
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identify(root.path.elements.mkString("/", "/", "")) must be === Some(root)
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identify("user") must be === Some(user)
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identify("deadLetters") must be === Some(system.deadLetters)
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identify("system") must be === Some(syst)
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identify("user/") must be === Some(user)
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identify("deadLetters/") must be === Some(system.deadLetters)
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identify("system/") must be === Some(syst)
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}
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"return deadLetters or ActorIdentity(None), respectively, for non-existing paths" in {
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identify("a/b/c") must be === None
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identify("a/b/c") must be === None
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identify("akka://all-systems/Nobody") must be === None
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identify("akka://all-systems/user") must be === None
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identify(system / "hallo") must be === None
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}
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}
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"An ActorContext" must {
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val all = Seq(c1, c2, c21)
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"select actors by their path" in {
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def check(looker: ActorRef, pathOf: ActorRef, result: ActorRef) {
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askNode(looker, SelectPath(pathOf.path)) must be === Some(result)
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}
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for {
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looker ← all
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target ← all
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} check(looker, target, target)
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}
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"select actors by their string path representation" in {
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def check(looker: ActorRef, pathOf: ActorRef, result: ActorRef) {
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askNode(looker, SelectString(pathOf.path.elements.mkString("/", "/", ""))) must be === Some(result)
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// with trailing /
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askNode(looker, SelectString(pathOf.path.elements.mkString("/", "/", "") + "/")) must be === Some(result)
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}
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for {
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looker ← all
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target ← all
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} check(looker, target, target)
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}
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"select actors by their root-anchored relative path" in {
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def check(looker: ActorRef, pathOf: ActorRef, result: ActorRef) {
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askNode(looker, SelectString(pathOf.path.elements.mkString("/", "/", ""))) must be === Some(result)
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askNode(looker, SelectString(pathOf.path.elements.mkString("/", "/", "/"))) must be === Some(result)
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}
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for {
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looker ← all
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target ← all
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} check(looker, target, target)
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}
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"select actors by their relative path" in {
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def check(looker: ActorRef, result: ActorRef, elems: String*) {
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askNode(looker, SelectString(elems mkString "/")) must be === Some(result)
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askNode(looker, SelectString(elems mkString ("", "/", "/"))) must be === Some(result)
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}
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check(c1, user, "..")
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for {
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looker ← Seq(c1, c2)
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target ← all
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} check(looker, target, Seq("..") ++ target.path.elements.drop(1): _*)
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check(c21, user, "..", "..")
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check(c21, root, "..", "..", "..")
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check(c21, root, "..", "..", "..", "..")
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}
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"find system-generated actors" in {
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def check(target: ActorRef) {
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for (looker ← all) {
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askNode(looker, SelectPath(target.path)) must be === Some(target)
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askNode(looker, SelectString(target.path.toString)) must be === Some(target)
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askNode(looker, SelectString(target.path.toString + "/")) must be === Some(target)
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}
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if (target != root)
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askNode(c1, SelectString("../.." + target.path.elements.mkString("/", "/", "/"))) must be === Some(target)
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}
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for (target ← Seq(root, syst, user)) check(target)
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}
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"return deadLetters or ActorIdentity(None), respectively, for non-existing paths" in {
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import scala.collection.JavaConverters._
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def checkOne(looker: ActorRef, query: Query, result: Option[ActorRef]) {
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val lookup = askNode(looker, query)
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lookup must be === result
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}
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def check(looker: ActorRef) {
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val lookname = looker.path.elements.mkString("", "/", "/")
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for (
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(l, r) ← Seq(
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SelectString("a/b/c") -> None,
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SelectString("akka://all-systems/Nobody") -> None,
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SelectPath(system / "hallo") -> None,
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SelectPath(looker.path child "hallo") -> None, // test Java API
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SelectPath(looker.path descendant Seq("a", "b").asJava) -> None) // test Java API
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) checkOne(looker, l, r)
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}
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for (looker ← all) check(looker)
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}
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}
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"An ActorSelection" must {
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"send messages directly" in {
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ActorSelection(c1, "") ! GetSender(testActor)
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expectMsg(system.deadLetters)
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lastSender must be === c1
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}
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"send messages to string path" in {
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system.actorSelection("/user/c2/c21") ! GetSender(testActor)
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expectMsg(system.deadLetters)
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lastSender must be === c21
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}
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"send messages to actor path" in {
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system.actorSelection(system / "c2" / "c21") ! GetSender(testActor)
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expectMsg(system.deadLetters)
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lastSender must be === c21
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}
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"send messages with correct sender" in {
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implicit val sender = c1
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ActorSelection(c21, "../../*") ! GetSender(testActor)
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val actors = Set() ++ receiveWhile(messages = 2) {
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case `c1` ⇒ lastSender
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}
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actors must be === Set(c1, c2)
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expectNoMsg(1 second)
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}
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"drop messages which cannot be delivered" in {
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implicit val sender = c2
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ActorSelection(c21, "../../*/c21") ! GetSender(testActor)
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val actors = receiveWhile(messages = 2) {
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case `c2` ⇒ lastSender
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}
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actors must be === Seq(c21)
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expectNoMsg(1 second)
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}
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}
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}
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@ -252,7 +252,7 @@ class ActorSystemSpec extends AkkaSpec(ActorSystemSpec.config) with ImplicitSend
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"shut down when /user fails" in {
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implicit val system = ActorSystem("Stop", AkkaSpec.testConf)
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EventFilter[ActorKilledException]() intercept {
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system.actorFor("/user") ! Kill
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system.actorSelection("/user") ! Kill
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awaitCond(system.isTerminated)
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}
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}
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@ -5,10 +5,11 @@
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package akka.actor
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import akka.AkkaException
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import scala.collection.immutable
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import scala.annotation.tailrec
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import scala.reflect.BeanProperty
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import scala.util.control.NoStackTrace
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import java.util.regex.Pattern
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import scala.annotation.tailrec
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/**
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* INTERNAL API
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@ -54,6 +55,30 @@ case object Kill extends Kill {
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def getInstance = this
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}
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/**
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* A message all Actors will understand, that when processed will reply with
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* [[akka.actor.ActorIdentity]] containing the `ActorRef`. The `messageId`
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* is returned in the `ActorIdentity` message as `correlationId`.
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*/
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@SerialVersionUID(1L)
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case class Identify(messageId: Any) extends AutoReceivedMessage
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/**
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* Reply to [[akka.actor.Identify]]. Contains
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* `Some(ref)` with the `ActorRef` of the actor replying to the request or
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* `None` if no actor matched the request.
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* The `correlationId` is taken from the `messageId` in
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* the `Identify` message.
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*/
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@SerialVersionUID(1L)
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case class ActorIdentity(correlationId: Any, ref: Option[ActorRef]) {
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/**
|
||||
* Java API: `ActorRef` of the actor replying to the request or
|
||||
* null if no actor matched the request.
|
||||
*/
|
||||
def getRef: ActorRef = ref.orNull
|
||||
}
|
||||
|
||||
/**
|
||||
* When Death Watch is used, the watcher will receive a Terminated(watched)
|
||||
* message when watched is terminated.
|
||||
|
|
@ -100,17 +125,45 @@ case object ReceiveTimeout extends ReceiveTimeout {
|
|||
}
|
||||
|
||||
/**
|
||||
* INTERNAL API
|
||||
* ActorRefFactory.actorSelection returns a special ref which sends these
|
||||
* nested path descriptions whenever using ! on them, the idea being that the
|
||||
* message is delivered by active routing of the various actors involved.
|
||||
*/
|
||||
sealed trait SelectionPath extends AutoReceivedMessage with PossiblyHarmful
|
||||
private[akka] sealed trait SelectionPath extends AutoReceivedMessage with PossiblyHarmful
|
||||
|
||||
/**
|
||||
* INTERNAL API
|
||||
*/
|
||||
@SerialVersionUID(1L)
|
||||
private[akka] case class SelectChildName(name: String, next: Any) extends SelectionPath
|
||||
private[akka] case class SelectChildName(name: String, next: Any) extends SelectionPath {
|
||||
|
||||
def wrappedMessage: Any = {
|
||||
@tailrec def rec(nx: Any): Any = nx match {
|
||||
case SelectChildName(_, n) ⇒ rec(n)
|
||||
case SelectChildPattern(_, n) ⇒ rec(n)
|
||||
case SelectParent(n) ⇒ rec(n)
|
||||
case x ⇒ x
|
||||
}
|
||||
rec(next)
|
||||
}
|
||||
|
||||
def identifyRequest: Option[Identify] = wrappedMessage match {
|
||||
case x: Identify ⇒ Some(x)
|
||||
case _ ⇒ None
|
||||
}
|
||||
|
||||
def allChildNames: immutable.Iterable[String] = {
|
||||
@tailrec def rec(nx: Any, acc: List[String]): List[String] = nx match {
|
||||
case SelectChildName(name, n) ⇒ rec(n, name :: acc)
|
||||
case SelectChildPattern(_, n) ⇒ throw new IllegalArgumentException("SelectChildPattern not allowed")
|
||||
case SelectParent(n) if acc.isEmpty ⇒ rec(n, acc)
|
||||
case SelectParent(n) ⇒ rec(n, acc.tail)
|
||||
case _ ⇒ acc
|
||||
}
|
||||
rec(this, Nil).reverse
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* INTERNAL API
|
||||
|
|
|
|||
|
|
@ -103,12 +103,12 @@ trait ActorContext extends ActorRefFactory {
|
|||
/**
|
||||
* Returns all supervised children; this method returns a view (i.e. a lazy
|
||||
* collection) onto the internal collection of children. Targeted lookups
|
||||
* should be using `actorFor` instead for performance reasons:
|
||||
* should be using `child` instead for performance reasons:
|
||||
*
|
||||
* {{{
|
||||
* val badLookup = context.children find (_.path.name == "kid")
|
||||
* // should better be expressed as:
|
||||
* val goodLookup = context.actorFor("kid")
|
||||
* val goodLookup = context.child("kid")
|
||||
* }}}
|
||||
*/
|
||||
def children: immutable.Iterable[ActorRef]
|
||||
|
|
@ -475,9 +475,27 @@ private[akka] class ActorCell(
|
|||
case AddressTerminated(address) ⇒ addressTerminated(address)
|
||||
case Kill ⇒ throw new ActorKilledException("Kill")
|
||||
case PoisonPill ⇒ self.stop()
|
||||
case SelectParent(m) ⇒ parent.tell(m, msg.sender)
|
||||
case SelectChildName(name, m) ⇒ getChildByName(name) match { case Some(c: ChildRestartStats) ⇒ c.child.tell(m, msg.sender); case _ ⇒ }
|
||||
case SelectParent(m) ⇒
|
||||
if (self == system.provider.rootGuardian) self.tell(m, msg.sender)
|
||||
else parent.tell(m, msg.sender)
|
||||
case s @ SelectChildName(name, m) ⇒
|
||||
def selectChild(): Unit = {
|
||||
getChildByName(name) match {
|
||||
case Some(c: ChildRestartStats) ⇒ c.child.tell(m, msg.sender)
|
||||
case _ ⇒
|
||||
s.identifyRequest foreach { x ⇒ sender ! ActorIdentity(x.messageId, None) }
|
||||
}
|
||||
}
|
||||
// need this special case because of extraNames handled by rootGuardian
|
||||
if (self == system.provider.rootGuardian) {
|
||||
self.asInstanceOf[LocalActorRef].getSingleChild(name) match {
|
||||
case Nobody ⇒ selectChild()
|
||||
case child ⇒ child.tell(m, msg.sender)
|
||||
}
|
||||
} else
|
||||
selectChild()
|
||||
case SelectChildPattern(p, m) ⇒ for (c ← children if p.matcher(c.path.name).matches) c.tell(m, msg.sender)
|
||||
case Identify(messageId) ⇒ sender ! ActorIdentity(messageId, Some(self))
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -180,7 +180,7 @@ final case class RootActorPath(address: Address, name: String = "/") extends Act
|
|||
*/
|
||||
override private[akka] def withUid(uid: Int): ActorPath =
|
||||
if (uid == ActorCell.undefinedUid) this
|
||||
else throw new IllegalStateException("RootActorPath must not have uid")
|
||||
else throw new IllegalStateException(s"RootActorPath must have undefinedUid, [$uid != ${ActorCell.undefinedUid}")
|
||||
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -116,7 +116,7 @@ abstract class ActorRef extends java.lang.Comparable[ActorRef] with Serializable
|
|||
* there is nobody to reply to).
|
||||
*
|
||||
* <pre>
|
||||
* actor.tell(message, context);
|
||||
* actor.tell(message, getSelf());
|
||||
* </pre>
|
||||
*/
|
||||
final def tell(msg: Any, sender: ActorRef): Unit = this.!(msg)(sender)
|
||||
|
|
@ -335,8 +335,9 @@ private[akka] class LocalActorRef private[akka] (
|
|||
/**
|
||||
* Method for looking up a single child beneath this actor. Override in order
|
||||
* to inject “synthetic” actor paths like “/temp”.
|
||||
* It is racy if called from the outside.
|
||||
*/
|
||||
protected def getSingleChild(name: String): InternalActorRef = {
|
||||
def getSingleChild(name: String): InternalActorRef = {
|
||||
val (childName, uid) = ActorCell.splitNameAndUid(name)
|
||||
actorCell.getChildByName(childName) match {
|
||||
case Some(crs: ChildRestartStats) if uid == ActorCell.undefinedUid || uid == crs.uid ⇒
|
||||
|
|
@ -401,7 +402,7 @@ private[akka] case class SerializedActorRef private (path: String) {
|
|||
"Trying to deserialize a serialized ActorRef without an ActorSystem in scope." +
|
||||
" Use 'akka.serialization.Serialization.currentSystem.withValue(system) { ... }'")
|
||||
case someSystem ⇒
|
||||
someSystem.actorFor(path)
|
||||
someSystem.provider.resolveActorRef(path)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -473,24 +474,30 @@ private[akka] class EmptyLocalActorRef(override val provider: ActorRefProvider,
|
|||
|
||||
override def sendSystemMessage(message: SystemMessage): Unit = {
|
||||
if (Mailbox.debug) println(s"ELAR $path having enqueued $message")
|
||||
specialHandle(message)
|
||||
specialHandle(message, provider.deadLetters)
|
||||
}
|
||||
|
||||
override def !(message: Any)(implicit sender: ActorRef = Actor.noSender): Unit = message match {
|
||||
case null ⇒ throw new InvalidMessageException("Message is null")
|
||||
case d: DeadLetter ⇒
|
||||
specialHandle(d.message) // do NOT form endless loops, since deadLetters will resend!
|
||||
case _ if !specialHandle(message) ⇒
|
||||
specialHandle(d.message, d.sender) // do NOT form endless loops, since deadLetters will resend!
|
||||
case _ if !specialHandle(message, sender) ⇒
|
||||
eventStream.publish(DeadLetter(message, if (sender eq Actor.noSender) provider.deadLetters else sender, this))
|
||||
case _ ⇒
|
||||
}
|
||||
|
||||
protected def specialHandle(msg: Any): Boolean = msg match {
|
||||
protected def specialHandle(msg: Any, sender: ActorRef): Boolean = msg match {
|
||||
case w: Watch ⇒
|
||||
if (w.watchee == this && w.watcher != this)
|
||||
w.watcher ! Terminated(w.watchee)(existenceConfirmed = false, addressTerminated = false)
|
||||
true
|
||||
case _: Unwatch ⇒ true // Just ignore
|
||||
case Identify(messageId) ⇒
|
||||
sender ! ActorIdentity(messageId, None)
|
||||
true
|
||||
case s: SelectChildName ⇒
|
||||
s.identifyRequest foreach { x ⇒ sender ! ActorIdentity(x.messageId, None) }
|
||||
true
|
||||
case _ ⇒ false
|
||||
}
|
||||
}
|
||||
|
|
@ -507,17 +514,24 @@ private[akka] class DeadLetterActorRef(_provider: ActorRefProvider,
|
|||
|
||||
override def !(message: Any)(implicit sender: ActorRef = this): Unit = message match {
|
||||
case null ⇒ throw new InvalidMessageException("Message is null")
|
||||
case d: DeadLetter ⇒ if (!specialHandle(d.message)) eventStream.publish(d)
|
||||
case _ ⇒ if (!specialHandle(message))
|
||||
case Identify(messageId) ⇒ sender ! ActorIdentity(messageId, Some(this))
|
||||
case d: DeadLetter ⇒ if (!specialHandle(d.message, d.sender)) eventStream.publish(d)
|
||||
case _ ⇒ if (!specialHandle(message, sender))
|
||||
eventStream.publish(DeadLetter(message, if (sender eq Actor.noSender) provider.deadLetters else sender, this))
|
||||
}
|
||||
|
||||
override protected def specialHandle(msg: Any): Boolean = msg match {
|
||||
override protected def specialHandle(msg: Any, sender: ActorRef): Boolean = msg match {
|
||||
case w: Watch ⇒
|
||||
if (w.watchee != this && w.watcher != this)
|
||||
w.watcher ! Terminated(w.watchee)(existenceConfirmed = false, addressTerminated = false)
|
||||
true
|
||||
case w: Unwatch ⇒ true // Just ignore
|
||||
case Identify(messageId) ⇒
|
||||
sender ! ActorIdentity(messageId, None)
|
||||
true
|
||||
case s: SelectChildName ⇒
|
||||
s.identifyRequest foreach { x ⇒ sender ! ActorIdentity(x.messageId, None) }
|
||||
true
|
||||
case NullMessage ⇒ true
|
||||
case _ ⇒ false
|
||||
}
|
||||
|
|
|
|||
|
|
@ -4,6 +4,7 @@
|
|||
|
||||
package akka.actor
|
||||
|
||||
import scala.collection.immutable
|
||||
import akka.dispatch.sysmsg._
|
||||
import akka.dispatch.NullMessage
|
||||
import akka.routing._
|
||||
|
|
@ -28,6 +29,13 @@ trait ActorRefProvider {
|
|||
*/
|
||||
def rootGuardian: InternalActorRef
|
||||
|
||||
/**
|
||||
* Reference to the supervisor of guardian and systemGuardian at the specified address;
|
||||
* this is exposed so that the ActorRefFactory can use it as lookupRoot, i.e.
|
||||
* for anchoring absolute actor selections.
|
||||
*/
|
||||
def rootGuardianAt(address: Address): ActorRef
|
||||
|
||||
/**
|
||||
* Reference to the supervisor used for all top-level user actors.
|
||||
*/
|
||||
|
|
@ -109,6 +117,7 @@ trait ActorRefProvider {
|
|||
* Create actor reference for a specified local or remote path. If no such
|
||||
* actor exists, it will be (equivalent to) a dead letter reference.
|
||||
*/
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(path: ActorPath): InternalActorRef
|
||||
|
||||
/**
|
||||
|
|
@ -117,6 +126,7 @@ trait ActorRefProvider {
|
|||
* (equivalent to) a dead letter reference. If `s` is a relative URI, resolve
|
||||
* it relative to the given ref.
|
||||
*/
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(ref: InternalActorRef, s: String): InternalActorRef
|
||||
|
||||
/**
|
||||
|
|
@ -125,8 +135,21 @@ trait ActorRefProvider {
|
|||
* i.e. it cannot be used to obtain a reference to an actor which is not
|
||||
* physically or logically attached to this actor system.
|
||||
*/
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(ref: InternalActorRef, p: Iterable[String]): InternalActorRef
|
||||
|
||||
/**
|
||||
* Create actor reference for a specified path. If no such
|
||||
* actor exists, it will be (equivalent to) a dead letter reference.
|
||||
*/
|
||||
def resolveActorRef(path: String): ActorRef
|
||||
|
||||
/**
|
||||
* Create actor reference for a specified path. If no such
|
||||
* actor exists, it will be (equivalent to) a dead letter reference.
|
||||
*/
|
||||
def resolveActorRef(path: ActorPath): ActorRef
|
||||
|
||||
/**
|
||||
* This Future is completed upon termination of this ActorRefProvider, which
|
||||
* is usually initiated by stopping the guardian via ActorSystem.stop().
|
||||
|
|
@ -214,6 +237,7 @@ trait ActorRefFactory {
|
|||
* `watch(ref)` to be notified of the target’s termination, which is also
|
||||
* signaled if the queried path cannot be resolved.
|
||||
*/
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(path: ActorPath): ActorRef = provider.actorFor(path)
|
||||
|
||||
/**
|
||||
|
|
@ -230,6 +254,7 @@ trait ActorRefFactory {
|
|||
* relative to the current context as described for look-ups by
|
||||
* `actorOf(Iterable[String])`
|
||||
*/
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(path: String): ActorRef = provider.actorFor(lookupRoot, path)
|
||||
|
||||
/**
|
||||
|
|
@ -250,6 +275,7 @@ trait ActorRefFactory {
|
|||
*
|
||||
* For maximum performance use a collection with efficient head & tail operations.
|
||||
*/
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(path: Iterable[String]): ActorRef = provider.actorFor(lookupRoot, path)
|
||||
|
||||
/**
|
||||
|
|
@ -273,6 +299,7 @@ trait ActorRefFactory {
|
|||
*
|
||||
* For maximum performance use a collection with efficient head & tail operations.
|
||||
*/
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(path: java.lang.Iterable[String]): ActorRef = provider.actorFor(lookupRoot, immutableSeq(path))
|
||||
|
||||
/**
|
||||
|
|
@ -282,7 +309,26 @@ trait ActorRefFactory {
|
|||
* the supplied path, it is recommended to send a message and gather the
|
||||
* replies in order to resolve the matching set of actors.
|
||||
*/
|
||||
def actorSelection(path: String): ActorSelection = ActorSelection(lookupRoot, path)
|
||||
def actorSelection(path: String): ActorSelection = path match {
|
||||
case RelativeActorPath(elems) ⇒
|
||||
if (elems.isEmpty) ActorSelection(provider.deadLetters, "")
|
||||
else if (elems.head.isEmpty) ActorSelection(provider.rootGuardian, elems.tail)
|
||||
else ActorSelection(lookupRoot, elems)
|
||||
case ActorPathExtractor(address, elems) ⇒
|
||||
ActorSelection(provider.rootGuardianAt(address), elems)
|
||||
case _ ⇒
|
||||
ActorSelection(provider.deadLetters, "")
|
||||
}
|
||||
|
||||
/**
|
||||
* Construct an [[akka.actor.ActorSelection]] from the given path, which is
|
||||
* parsed for wildcards (these are replaced by regular expressions
|
||||
* internally). No attempt is made to verify the existence of any part of
|
||||
* the supplied path, it is recommended to send a message and gather the
|
||||
* replies in order to resolve the matching set of actors.
|
||||
*/
|
||||
def actorSelection(path: ActorPath): ActorSelection =
|
||||
ActorSelection(provider.rootGuardianAt(path.address), path.elements)
|
||||
|
||||
/**
|
||||
* Stop the actor pointed to by the given [[akka.actor.ActorRef]]; this is
|
||||
|
|
@ -505,7 +551,7 @@ private[akka] class LocalActorRefProvider private[akka] (
|
|||
*/
|
||||
protected def systemGuardianStrategy: SupervisorStrategy = SupervisorStrategy.defaultStrategy
|
||||
|
||||
lazy val rootGuardian: LocalActorRef =
|
||||
override lazy val rootGuardian: LocalActorRef =
|
||||
new LocalActorRef(system, Props(new Guardian(rootGuardianStrategy)), theOneWhoWalksTheBubblesOfSpaceTime, rootPath) {
|
||||
override def getParent: InternalActorRef = this
|
||||
override def getSingleChild(name: String): InternalActorRef = name match {
|
||||
|
|
@ -515,7 +561,11 @@ private[akka] class LocalActorRefProvider private[akka] (
|
|||
}
|
||||
}
|
||||
|
||||
lazy val guardian: LocalActorRef = {
|
||||
override def rootGuardianAt(address: Address): ActorRef =
|
||||
if (address == rootPath.address) rootGuardian
|
||||
else deadLetters
|
||||
|
||||
override lazy val guardian: LocalActorRef = {
|
||||
val cell = rootGuardian.underlying
|
||||
cell.reserveChild("user")
|
||||
val ref = new LocalActorRef(system, Props(new Guardian(guardianStrategy)), rootGuardian, rootPath / "user")
|
||||
|
|
@ -524,7 +574,7 @@ private[akka] class LocalActorRefProvider private[akka] (
|
|||
ref
|
||||
}
|
||||
|
||||
lazy val systemGuardian: LocalActorRef = {
|
||||
override lazy val systemGuardian: LocalActorRef = {
|
||||
val cell = rootGuardian.underlying
|
||||
cell.reserveChild("system")
|
||||
val ref = new LocalActorRef(system, Props(new SystemGuardian(systemGuardianStrategy)), rootGuardian, rootPath / "system")
|
||||
|
|
@ -554,7 +604,8 @@ private[akka] class LocalActorRefProvider private[akka] (
|
|||
eventStream.startDefaultLoggers(_system)
|
||||
}
|
||||
|
||||
def actorFor(ref: InternalActorRef, path: String): InternalActorRef = path match {
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
override def actorFor(ref: InternalActorRef, path: String): InternalActorRef = path match {
|
||||
case RelativeActorPath(elems) ⇒
|
||||
if (elems.isEmpty) {
|
||||
log.debug("look-up of empty path string [{}] fails (per definition)", path)
|
||||
|
|
@ -567,14 +618,16 @@ private[akka] class LocalActorRefProvider private[akka] (
|
|||
deadLetters
|
||||
}
|
||||
|
||||
def actorFor(path: ActorPath): InternalActorRef =
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
override def actorFor(path: ActorPath): InternalActorRef =
|
||||
if (path.root == rootPath) actorFor(rootGuardian, path.elements)
|
||||
else {
|
||||
log.debug("look-up of foreign ActorPath [{}] failed", path)
|
||||
deadLetters
|
||||
}
|
||||
|
||||
def actorFor(ref: InternalActorRef, path: Iterable[String]): InternalActorRef =
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
override def actorFor(ref: InternalActorRef, path: Iterable[String]): InternalActorRef =
|
||||
if (path.isEmpty) {
|
||||
log.debug("look-up of empty path sequence fails (per definition)")
|
||||
deadLetters
|
||||
|
|
@ -585,6 +638,35 @@ private[akka] class LocalActorRefProvider private[akka] (
|
|||
case x ⇒ x
|
||||
}
|
||||
|
||||
def resolveActorRef(path: String): ActorRef = path match {
|
||||
case ActorPathExtractor(address, elems) if address == rootPath.address ⇒ resolveActorRef(rootGuardian, elems)
|
||||
case _ ⇒
|
||||
log.debug("resolve of unknown path [{}] failed", path)
|
||||
deadLetters
|
||||
}
|
||||
|
||||
def resolveActorRef(path: ActorPath): ActorRef = {
|
||||
if (path.root == rootPath) resolveActorRef(rootGuardian, path.elements)
|
||||
else {
|
||||
log.debug("resolve of foreign ActorPath [{}] failed", path)
|
||||
deadLetters
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* INTERNAL API
|
||||
*/
|
||||
private[akka] def resolveActorRef(ref: InternalActorRef, pathElements: Iterable[String]): InternalActorRef =
|
||||
if (pathElements.isEmpty) {
|
||||
log.debug("resolve of empty path sequence fails (per definition)")
|
||||
deadLetters
|
||||
} else ref.getChild(pathElements.iterator) match {
|
||||
case Nobody ⇒
|
||||
log.debug("resolve of path sequence [/{}] failed", pathElements.mkString("/"))
|
||||
new EmptyLocalActorRef(system.provider, ref.path / pathElements, eventStream)
|
||||
case x ⇒ x
|
||||
}
|
||||
|
||||
def actorOf(system: ActorSystemImpl, props: Props, supervisor: InternalActorRef, path: ActorPath,
|
||||
systemService: Boolean, deploy: Option[Deploy], lookupDeploy: Boolean, async: Boolean): InternalActorRef = {
|
||||
props.routerConfig match {
|
||||
|
|
|
|||
|
|
@ -4,7 +4,7 @@
|
|||
package akka.actor
|
||||
|
||||
import language.implicitConversions
|
||||
|
||||
import scala.collection.immutable
|
||||
import java.util.regex.Pattern
|
||||
import akka.util.Helpers
|
||||
|
||||
|
|
@ -12,13 +12,15 @@ import akka.util.Helpers
|
|||
* An ActorSelection is a logical view of a section of an ActorSystem's tree of Actors,
|
||||
* allowing for broadcasting of messages to that section.
|
||||
*/
|
||||
abstract class ActorSelection {
|
||||
@SerialVersionUID(1L)
|
||||
abstract class ActorSelection extends Serializable {
|
||||
this: ScalaActorSelection ⇒
|
||||
|
||||
protected def target: ActorRef
|
||||
|
||||
protected def path: Array[AnyRef]
|
||||
|
||||
@deprecated("use the two-arg variant (typically getSelf() as second arg)", "2.2")
|
||||
def tell(msg: Any): Unit = target ! toMessage(msg, path)
|
||||
|
||||
def tell(msg: Any, sender: ActorRef): Unit = target.tell(toMessage(msg, path), sender)
|
||||
|
|
@ -36,6 +38,23 @@ abstract class ActorSelection {
|
|||
}
|
||||
acc
|
||||
}
|
||||
|
||||
override def toString: String = {
|
||||
val sb = new java.lang.StringBuilder
|
||||
sb.append("ActorSelection[").
|
||||
append(target.toString).
|
||||
append(path.mkString("/", "/", "")).
|
||||
append("]")
|
||||
sb.toString
|
||||
}
|
||||
|
||||
override def equals(obj: Any): Boolean = obj match {
|
||||
case s: ActorSelection ⇒ this.target == s.target && this.path == s.path
|
||||
case _ ⇒ false
|
||||
}
|
||||
|
||||
override def hashCode: Int =
|
||||
37 * (37 * 17 + target.hashCode) + path.hashCode
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -60,6 +79,23 @@ object ActorSelection {
|
|||
def path = compiled
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Construct an ActorSelection from the given string representing a path
|
||||
* relative to the given target. This operation has to create all the
|
||||
* matching magic, so it is preferable to cache its result if the
|
||||
* intention is to send messages frequently.
|
||||
*/
|
||||
def apply(anchor: ActorRef, elements: immutable.Iterable[String]): ActorSelection = {
|
||||
// TODO #3073 optimize/align compiled Array
|
||||
val elems: Array[String] = elements.collect { case x if x.nonEmpty ⇒ x }(collection.breakOut)
|
||||
val compiled: Array[AnyRef] = elems map (x ⇒ if ((x.indexOf('?') != -1) || (x.indexOf('*') != -1)) Helpers.makePattern(x) else x)
|
||||
new ActorSelection with ScalaActorSelection {
|
||||
override def target = anchor
|
||||
override def path = compiled
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -259,7 +259,7 @@ abstract class ActorSystem extends ActorRefFactory {
|
|||
def logConfiguration(): Unit
|
||||
|
||||
/**
|
||||
* Construct a path below the application guardian to be used with [[ActorSystem.actorFor]].
|
||||
* Construct a path below the application guardian to be used with [[ActorSystem.actorSelection]].
|
||||
*/
|
||||
def /(name: String): ActorPath
|
||||
|
||||
|
|
@ -269,7 +269,7 @@ abstract class ActorSystem extends ActorRefFactory {
|
|||
def child(child: String): ActorPath = /(child)
|
||||
|
||||
/**
|
||||
* Construct a path below the application guardian to be used with [[ActorSystem.actorFor]].
|
||||
* Construct a path below the application guardian to be used with [[ActorSystem.actorSelection]].
|
||||
*/
|
||||
def /(name: Iterable[String]): ActorPath
|
||||
|
||||
|
|
@ -725,7 +725,7 @@ private[akka] class ActorSystemImpl(val name: String, applicationConfig: Config,
|
|||
indent + node.path.name + " " + Logging.simpleName(node)
|
||||
}
|
||||
}
|
||||
printNode(actorFor("/"), "")
|
||||
printNode(lookupRoot, "")
|
||||
}
|
||||
|
||||
final class TerminationCallbacks extends Runnable with Awaitable[Unit] {
|
||||
|
|
|
|||
|
|
@ -258,6 +258,9 @@ class RouteeProvider(val context: ActorContext, val routeeProps: Props, val resi
|
|||
*/
|
||||
def unregisterRoutees(routees: java.lang.Iterable[ActorRef]): Unit = unregisterRoutees(immutableSeq(routees))
|
||||
|
||||
// TODO replace all usages of actorFor in routing with actorSelection. Not possible until
|
||||
// major refactoring of routing because of demand for synchronous registration of routees.
|
||||
|
||||
/**
|
||||
* Looks up routes with specified paths and registers them.
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -162,6 +162,8 @@ private[camel] class ActorProducer(val endpoint: ActorEndpoint, camel: Camel) ex
|
|||
case Failure(e: TimeoutException) ⇒ exchange.setFailure(FailureResult(new TimeoutException("Failed to get Ack or Failure response from the actor [%s] within timeout [%s]. Check replyTimeout and blocking settings [%s]" format (endpoint.path, endpoint.replyTimeout, endpoint))))
|
||||
case Failure(throwable) ⇒ exchange.setFailure(FailureResult(throwable))
|
||||
}
|
||||
|
||||
// FIXME #3074 how do we solve this with actorSelection?
|
||||
val async = try actorFor(endpoint.path).ask(messageFor(exchange))(Timeout(endpoint.replyTimeout)) catch { case NonFatal(e) ⇒ Future.failed(e) }
|
||||
implicit val ec = camel.system.dispatcher // FIXME which ExecutionContext should be used here?
|
||||
async.onComplete(action andThen { _ ⇒ callback.done(false) })
|
||||
|
|
@ -170,6 +172,7 @@ private[camel] class ActorProducer(val endpoint: ActorEndpoint, camel: Camel) ex
|
|||
|
||||
}
|
||||
|
||||
// FIXME #3074 how do we solve this with actorSelection?
|
||||
private def fireAndForget(message: CamelMessage, exchange: CamelExchangeAdapter): Unit =
|
||||
try { actorFor(endpoint.path) ! message } catch { case NonFatal(e) ⇒ exchange.setFailure(new FailureResult(e)) }
|
||||
|
||||
|
|
@ -205,6 +208,7 @@ private[camel] case class ActorEndpointPath private (actorPath: String) {
|
|||
require(actorPath.startsWith("akka://"))
|
||||
|
||||
def findActorIn(system: ActorSystem): Option[ActorRef] = {
|
||||
// FIXME #3074 how do we solve this with actorSelection?
|
||||
val ref = system.actorFor(actorPath)
|
||||
if (ref.isTerminated) None else Some(ref)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -70,13 +70,21 @@ private[akka] class ClusterActorRefProvider(
|
|||
* This method is overridden here to keep track of remote deployed actors to
|
||||
* be able to clean up corresponding child references.
|
||||
*/
|
||||
override def useActorOnNode(path: ActorPath, props: Props, deploy: Deploy, supervisor: ActorRef): Unit = {
|
||||
super.useActorOnNode(path, props, deploy, supervisor)
|
||||
remoteDeploymentWatcher ! ((actorFor(path), supervisor))
|
||||
override def useActorOnNode(ref: ActorRef, props: Props, deploy: Deploy, supervisor: ActorRef): Unit = {
|
||||
super.useActorOnNode(ref, props, deploy, supervisor)
|
||||
import RemoteDeploymentWatcher.WatchRemote
|
||||
remoteDeploymentWatcher ! WatchRemote(ref, supervisor)
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* INTERNAL API
|
||||
*/
|
||||
private[akka] object RemoteDeploymentWatcher {
|
||||
case class WatchRemote(actor: ActorRef, supervisor: ActorRef)
|
||||
}
|
||||
|
||||
/**
|
||||
* INTERNAL API
|
||||
*
|
||||
|
|
@ -84,10 +92,11 @@ private[akka] class ClusterActorRefProvider(
|
|||
* goes down (jvm crash, network failure), i.e. triggered by [[akka.actor.AddressTerminated]].
|
||||
*/
|
||||
private[akka] class RemoteDeploymentWatcher extends Actor {
|
||||
import RemoteDeploymentWatcher._
|
||||
var supervisors = Map.empty[ActorRef, InternalActorRef]
|
||||
|
||||
def receive = {
|
||||
case (a: ActorRef, supervisor: InternalActorRef) ⇒
|
||||
case WatchRemote(a, supervisor: InternalActorRef) ⇒
|
||||
supervisors += (a -> supervisor)
|
||||
context.watch(a)
|
||||
|
||||
|
|
|
|||
|
|
@ -20,6 +20,7 @@ import akka.pattern.ask
|
|||
import akka.util.Timeout
|
||||
import akka.cluster.MemberStatus._
|
||||
import akka.cluster.ClusterEvent._
|
||||
import akka.actor.ActorSelection
|
||||
|
||||
/**
|
||||
* Base trait for all cluster messages. All ClusterMessage's are serializable.
|
||||
|
|
@ -244,8 +245,8 @@ private[cluster] final class ClusterCoreDaemon(publisher: ActorRef) extends Acto
|
|||
/**
|
||||
* Looks up and returns the remote cluster command connection for the specific address.
|
||||
*/
|
||||
private def clusterCore(address: Address): ActorRef =
|
||||
context.actorFor(RootActorPath(address) / "system" / "cluster" / "core" / "daemon")
|
||||
private def clusterCore(address: Address): ActorSelection =
|
||||
context.actorSelection(RootActorPath(address) / "system" / "cluster" / "core" / "daemon")
|
||||
|
||||
val heartbeatSender = context.actorOf(Props[ClusterHeartbeatSender].
|
||||
withDispatcher(UseDispatcher), name = "heartbeatSender")
|
||||
|
|
@ -890,7 +891,7 @@ private[cluster] final class FirstSeedNodeProcess(seedNodes: immutable.IndexedSe
|
|||
case JoinSeedNode ⇒
|
||||
if (timeout.hasTimeLeft) {
|
||||
// send InitJoin to remaining seed nodes (except myself)
|
||||
remainingSeedNodes foreach { a ⇒ context.actorFor(context.parent.path.toStringWithAddress(a)) ! InitJoin }
|
||||
remainingSeedNodes foreach { a ⇒ context.actorSelection(context.parent.path.toStringWithAddress(a)) ! InitJoin }
|
||||
} else {
|
||||
// no InitJoinAck received, initialize new cluster by joining myself
|
||||
context.parent ! JoinTo(selfAddress)
|
||||
|
|
@ -951,7 +952,7 @@ private[cluster] final class JoinSeedNodeProcess(seedNodes: immutable.IndexedSeq
|
|||
case JoinSeedNode ⇒
|
||||
// send InitJoin to all seed nodes (except myself)
|
||||
seedNodes.collect {
|
||||
case a if a != selfAddress ⇒ context.actorFor(context.parent.path.toStringWithAddress(a))
|
||||
case a if a != selfAddress ⇒ context.actorSelection(context.parent.path.toStringWithAddress(a))
|
||||
} foreach { _ ! InitJoin }
|
||||
case InitJoinAck(address) ⇒
|
||||
// first InitJoinAck reply
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@ import language.postfixOps
|
|||
|
||||
import scala.collection.immutable
|
||||
import scala.concurrent.duration._
|
||||
import akka.actor.{ ActorLogging, ActorRef, Address, Actor, RootActorPath, Props }
|
||||
import akka.actor.{ ActorLogging, ActorRef, ActorSelection, Address, Actor, RootActorPath, Props }
|
||||
import akka.cluster.ClusterEvent._
|
||||
import akka.routing.MurmurHash
|
||||
|
||||
|
|
@ -113,13 +113,14 @@ private[cluster] final class ClusterHeartbeatSender extends Actor with ActorLogg
|
|||
/**
|
||||
* Looks up and returns the remote cluster heartbeat connection for the specific address.
|
||||
*/
|
||||
def heartbeatReceiver(address: Address): ActorRef =
|
||||
context.actorFor(RootActorPath(address) / "system" / "cluster" / "heartbeatReceiver")
|
||||
def heartbeatReceiver(address: Address): ActorSelection =
|
||||
context.actorSelection(RootActorPath(address) / "system" / "cluster" / "heartbeatReceiver")
|
||||
|
||||
/**
|
||||
* Looks up and returns the remote cluster heartbeat sender for the specific address.
|
||||
*/
|
||||
def heartbeatSender(address: Address): ActorRef = context.actorFor(self.path.toStringWithAddress(address))
|
||||
def heartbeatSender(address: Address): ActorSelection =
|
||||
context.actorSelection(self.path.toStringWithAddress(address))
|
||||
|
||||
def receive = {
|
||||
case HeartbeatTick ⇒ heartbeat()
|
||||
|
|
|
|||
|
|
@ -157,7 +157,7 @@ private[cluster] class ClusterMetricsCollector(publisher: ActorRef) extends Acto
|
|||
sendGossip(address, MetricsGossipEnvelope(selfAddress, latestGossip, reply = true))
|
||||
|
||||
def sendGossip(address: Address, envelope: MetricsGossipEnvelope): Unit =
|
||||
context.actorFor(self.path.toStringWithAddress(address)) ! envelope
|
||||
context.actorSelection(self.path.toStringWithAddress(address)) ! envelope
|
||||
|
||||
def selectRandomNode(addresses: immutable.IndexedSeq[Address]): Option[Address] =
|
||||
if (addresses.isEmpty) None else Some(addresses(ThreadLocalRandom.current nextInt addresses.size))
|
||||
|
|
|
|||
|
|
@ -20,6 +20,8 @@ import akka.actor.Address
|
|||
import akka.remote.RemoteActorRef
|
||||
import java.util.concurrent.TimeoutException
|
||||
import akka.actor.ActorSystemImpl
|
||||
import akka.actor.ActorIdentity
|
||||
import akka.actor.Identify
|
||||
|
||||
object ClusterDeathWatchMultiJvmSpec extends MultiNodeConfig {
|
||||
val first = role("first")
|
||||
|
|
@ -65,13 +67,19 @@ abstract class ClusterDeathWatchSpec
|
|||
|
||||
val path2 = RootActorPath(second) / "user" / "subject"
|
||||
val path3 = RootActorPath(third) / "user" / "subject"
|
||||
val watchEstablished = TestLatch(1)
|
||||
val watchEstablished = TestLatch(2)
|
||||
system.actorOf(Props(new Actor {
|
||||
context.watch(context.actorFor(path2))
|
||||
context.watch(context.actorFor(path3))
|
||||
watchEstablished.countDown
|
||||
context.actorSelection(path2) ! Identify(path2)
|
||||
context.actorSelection(path3) ! Identify(path3)
|
||||
|
||||
def receive = {
|
||||
case t: Terminated ⇒ testActor ! t.actor.path
|
||||
case ActorIdentity(`path2`, Some(ref)) ⇒
|
||||
context.watch(ref)
|
||||
watchEstablished.countDown
|
||||
case ActorIdentity(`path3`, Some(ref)) ⇒
|
||||
context.watch(ref)
|
||||
watchEstablished.countDown
|
||||
case Terminated(actor) ⇒ testActor ! actor.path
|
||||
}
|
||||
}), name = "observer1")
|
||||
|
||||
|
|
|
|||
|
|
@ -83,7 +83,7 @@ abstract class RestartFirstSeedNodeSpec
|
|||
enterBarrier("seed1-address-receiver-ready")
|
||||
seedNode1Address = Cluster(seed1System).selfAddress
|
||||
List(seed2, seed3) foreach { r ⇒
|
||||
system.actorFor(RootActorPath(r) / "user" / "address-receiver") ! seedNode1Address
|
||||
system.actorSelection(RootActorPath(r) / "user" / "address-receiver") ! seedNode1Address
|
||||
expectMsg(5 seconds, "ok")
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -8,6 +8,7 @@ import scala.annotation.tailrec
|
|||
import scala.collection.immutable
|
||||
import scala.concurrent.duration._
|
||||
import scala.concurrent.forkjoin.ThreadLocalRandom
|
||||
import java.util.concurrent.atomic.AtomicReference
|
||||
import org.scalatest.BeforeAndAfterEach
|
||||
import com.typesafe.config.Config
|
||||
import com.typesafe.config.ConfigFactory
|
||||
|
|
@ -35,6 +36,8 @@ import akka.remote.testkit.MultiNodeSpec
|
|||
import akka.routing.FromConfig
|
||||
import akka.testkit._
|
||||
import akka.testkit.TestEvent._
|
||||
import akka.actor.Identify
|
||||
import akka.actor.ActorIdentity
|
||||
|
||||
/**
|
||||
* This test is intended to be used as long running stress test
|
||||
|
|
@ -553,9 +556,7 @@ private[cluster] object StressMultiJvmSpec extends MultiNodeConfig {
|
|||
* Used for remote death watch testing
|
||||
*/
|
||||
class Watchee extends Actor {
|
||||
def receive = {
|
||||
case Ping ⇒ sender ! Pong
|
||||
}
|
||||
def receive = Actor.emptyBehavior
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -623,9 +624,6 @@ private[cluster] object StressMultiJvmSpec extends MultiNodeConfig {
|
|||
case class ChildrenCount(numberOfChildren: Int, numberOfChildRestarts: Int)
|
||||
case object Reset
|
||||
|
||||
case object Ping
|
||||
case object Pong
|
||||
|
||||
}
|
||||
|
||||
class StressMultiJvmNode1 extends StressSpec
|
||||
|
|
@ -652,6 +650,8 @@ abstract class StressSpec
|
|||
val settings = new Settings(system.settings.config)
|
||||
import settings._
|
||||
|
||||
val identifyProbe = TestProbe()
|
||||
|
||||
var step = 0
|
||||
var nbrUsedRoles = 0
|
||||
|
||||
|
|
@ -687,13 +687,16 @@ abstract class StressSpec
|
|||
}
|
||||
enterBarrier("result-aggregator-created-" + step)
|
||||
runOn(roles.take(nbrUsedRoles): _*) {
|
||||
phiObserver ! ReportTo(Some(clusterResultAggregator))
|
||||
phiObserver ! ReportTo(clusterResultAggregator)
|
||||
statsObserver ! Reset
|
||||
statsObserver ! ReportTo(Some(clusterResultAggregator))
|
||||
statsObserver ! ReportTo(clusterResultAggregator)
|
||||
}
|
||||
}
|
||||
|
||||
def clusterResultAggregator: ActorRef = system.actorFor(node(roles.head) / "user" / ("result" + step))
|
||||
def clusterResultAggregator: Option[ActorRef] = {
|
||||
system.actorSelection(node(roles.head) / "user" / ("result" + step)).tell(Identify(step), identifyProbe.ref)
|
||||
identifyProbe.expectMsgType[ActorIdentity].ref
|
||||
}
|
||||
|
||||
lazy val clusterResultHistory = system.actorOf(Props[ClusterResultHistory], "resultHistory")
|
||||
|
||||
|
|
@ -703,9 +706,12 @@ abstract class StressSpec
|
|||
|
||||
def awaitClusterResult(): Unit = {
|
||||
runOn(roles.head) {
|
||||
val r = clusterResultAggregator
|
||||
clusterResultAggregator match {
|
||||
case Some(r) ⇒
|
||||
watch(r)
|
||||
expectMsgPF(remaining) { case Terminated(a) if a.path == r.path ⇒ true }
|
||||
case None ⇒ // ok, already terminated
|
||||
}
|
||||
}
|
||||
enterBarrier("cluster-result-done-" + step)
|
||||
}
|
||||
|
|
@ -778,9 +784,9 @@ abstract class StressSpec
|
|||
}
|
||||
enterBarrier("watchee-created-" + step)
|
||||
runOn(roles.head) {
|
||||
system.actorFor(node(removeRole) / "user" / "watchee") ! Ping
|
||||
expectMsg(Pong)
|
||||
watch(lastSender)
|
||||
system.actorSelection(node(removeRole) / "user" / "watchee").tell(Identify("watchee"), identifyProbe.ref)
|
||||
val watchee = identifyProbe.expectMsgType[ActorIdentity].ref.get
|
||||
watch(watchee)
|
||||
}
|
||||
enterBarrier("watch-estabilished-" + step)
|
||||
|
||||
|
|
@ -838,8 +844,9 @@ abstract class StressSpec
|
|||
|
||||
val returnValue = thunk
|
||||
|
||||
clusterResultAggregator !
|
||||
ClusterResult(cluster.selfAddress, (System.nanoTime - startTime).nanos, cluster.readView.latestStats :- startStats)
|
||||
clusterResultAggregator foreach {
|
||||
_ ! ClusterResult(cluster.selfAddress, (System.nanoTime - startTime).nanos, cluster.readView.latestStats :- startStats)
|
||||
}
|
||||
|
||||
returnValue
|
||||
}
|
||||
|
|
@ -904,7 +911,12 @@ abstract class StressSpec
|
|||
|
||||
}
|
||||
|
||||
def master: ActorRef = system.actorFor("/user/master-" + myself.name)
|
||||
def masterName: String = "master-" + myself.name
|
||||
|
||||
def master: Option[ActorRef] = {
|
||||
system.actorSelection("/user/" + masterName).tell(Identify("master"), identifyProbe.ref)
|
||||
identifyProbe.expectMsgType[ActorIdentity].ref
|
||||
}
|
||||
|
||||
def exerciseRouters(title: String, duration: FiniteDuration, batchInterval: FiniteDuration,
|
||||
expectDroppedMessages: Boolean, tree: Boolean): Unit =
|
||||
|
|
@ -940,13 +952,16 @@ abstract class StressSpec
|
|||
}
|
||||
|
||||
def awaitWorkResult: WorkResult = {
|
||||
val m = master
|
||||
val workResult = expectMsgType[WorkResult]
|
||||
log.info("{} result, [{}] jobs/s, retried [{}] of [{}] msg", m.path.name,
|
||||
log.info("{} result, [{}] jobs/s, retried [{}] of [{}] msg", masterName,
|
||||
workResult.jobsPerSecond.form,
|
||||
workResult.retryCount, workResult.sendCount)
|
||||
master match {
|
||||
case Some(m) ⇒
|
||||
watch(m)
|
||||
expectMsgPF(remaining) { case Terminated(a) if a.path == m.path ⇒ true }
|
||||
case None ⇒ // ok, already terminated
|
||||
}
|
||||
workResult
|
||||
}
|
||||
|
||||
|
|
@ -1043,7 +1058,8 @@ abstract class StressSpec
|
|||
"end routers that are running while nodes are joining" taggedAs LongRunningTest in within(30.seconds) {
|
||||
runOn(roles.take(3): _*) {
|
||||
val m = master
|
||||
m.tell(End, testActor)
|
||||
m must not be (None)
|
||||
m.get.tell(End, testActor)
|
||||
val workResult = awaitWorkResult
|
||||
workResult.retryCount must be(0)
|
||||
workResult.sendCount must be > (0L)
|
||||
|
|
@ -1129,7 +1145,8 @@ abstract class StressSpec
|
|||
"end routers that are running while nodes are removed" taggedAs LongRunningTest in within(30.seconds) {
|
||||
runOn(roles.take(3): _*) {
|
||||
val m = master
|
||||
m.tell(End, testActor)
|
||||
m must not be (None)
|
||||
m.get.tell(End, testActor)
|
||||
val workResult = awaitWorkResult
|
||||
workResult.sendCount must be > (0L)
|
||||
workResult.ackCount must be > (0L)
|
||||
|
|
|
|||
|
|
@ -39,7 +39,7 @@ take over and a new singleton actor is created. For these failure scenarios ther
|
|||
not be a graceful hand-over, but more than one active singletons is prevented by all
|
||||
reasonable means. Some corner cases are eventually resolved by configurable timeouts.
|
||||
|
||||
You access the singleton actor with ``actorFor`` using the names you have specified when
|
||||
You access the singleton actor with ``actorSelection`` using the names you have specified when
|
||||
creating the ClusterSingletonManager. You can subscribe to cluster ``LeaderChanged`` or
|
||||
``RoleLeaderChanged`` events to keep track of which node it is supposed to be running on.
|
||||
Alternatively the singleton actor may broadcast its existence when it is started.
|
||||
|
|
@ -78,7 +78,7 @@ This message will be sent over to the ``ClusterSingletonManager`` at the new lea
|
|||
will be passed to the ``singletonProps`` factory when creating the new singleton instance.
|
||||
|
||||
With the names given above the path of singleton actor can be constructed by subscribing to
|
||||
``RoleLeaderChanged`` cluster event and the actor reference is then looked up using ``actorFor``:
|
||||
``RoleLeaderChanged`` cluster event and the actor reference is then looked up using ``actorSelection``:
|
||||
|
||||
.. includecode:: @contribSrc@/src/multi-jvm/scala/akka/contrib/pattern/ClusterSingletonManagerSpec.scala#singleton-proxy2
|
||||
|
||||
|
|
|
|||
|
|
@ -9,6 +9,7 @@ import akka.actor.Actor
|
|||
import akka.actor.Actor.Receive
|
||||
import akka.actor.ActorLogging
|
||||
import akka.actor.ActorRef
|
||||
import akka.actor.ActorSelection
|
||||
import akka.actor.Address
|
||||
import akka.actor.FSM
|
||||
import akka.actor.Props
|
||||
|
|
@ -229,7 +230,7 @@ class ClusterSingletonManagerIsStuck(message: String) extends AkkaException(mess
|
|||
* is prevented by all reasonable means. Some corner cases are eventually
|
||||
* resolved by configurable timeouts.
|
||||
*
|
||||
* You access the singleton actor with `actorFor` using the names you have
|
||||
* You access the singleton actor with `actorSelection` using the names you have
|
||||
* specified when creating the ClusterSingletonManager. You can subscribe to
|
||||
* [[akka.cluster.ClusterEvent.LeaderChanged]] or
|
||||
* [[akka.cluster.ClusterEvent.RoleLeaderChanged]] to keep track of which node
|
||||
|
|
@ -385,7 +386,7 @@ class ClusterSingletonManager(
|
|||
super.postStop()
|
||||
}
|
||||
|
||||
def peer(at: Address): ActorRef = context.actorFor(self.path.toStringWithAddress(at))
|
||||
def peer(at: Address): ActorSelection = context.actorSelection(self.path.toStringWithAddress(at))
|
||||
|
||||
def getNextLeaderChanged(): Unit =
|
||||
if (leaderChangedReceived) {
|
||||
|
|
|
|||
|
|
@ -25,6 +25,7 @@ import akka.remote.testkit.STMultiNodeSpec
|
|||
import akka.testkit._
|
||||
import akka.testkit.TestEvent._
|
||||
import akka.actor.Terminated
|
||||
import akka.actor.ActorSelection
|
||||
|
||||
object ClusterSingletonManagerChaosSpec extends MultiNodeConfig {
|
||||
val controller = role("controller")
|
||||
|
|
@ -104,8 +105,8 @@ class ClusterSingletonManagerChaosSpec extends MultiNodeSpec(ClusterSingletonMan
|
|||
}
|
||||
}
|
||||
|
||||
def echo(leader: RoleName): ActorRef =
|
||||
system.actorFor(RootActorPath(node(leader).address) / "user" / "singleton" / "echo")
|
||||
def echo(leader: RoleName): ActorSelection =
|
||||
system.actorSelection(RootActorPath(node(leader).address) / "user" / "singleton" / "echo")
|
||||
|
||||
def verify(leader: RoleName): Unit = {
|
||||
enterBarrier("before-" + leader.name + "-verified")
|
||||
|
|
|
|||
|
|
@ -24,6 +24,9 @@ import akka.remote.testkit.STMultiNodeSpec
|
|||
import akka.testkit._
|
||||
import akka.testkit.TestEvent._
|
||||
import akka.actor.Terminated
|
||||
import akka.actor.Identify
|
||||
import akka.actor.ActorIdentity
|
||||
import akka.actor.ActorSelection
|
||||
|
||||
object ClusterSingletonManagerSpec extends MultiNodeConfig {
|
||||
val controller = role("controller")
|
||||
|
|
@ -157,11 +160,11 @@ object ClusterSingletonManagerSpec extends MultiNodeConfig {
|
|||
def receive = {
|
||||
case state: CurrentClusterState ⇒ leaderAddress = state.leader
|
||||
case LeaderChanged(leader) ⇒ leaderAddress = leader
|
||||
case other ⇒ consumer foreach { _ forward other }
|
||||
case other ⇒ consumer foreach { _.tell(other, sender) }
|
||||
}
|
||||
|
||||
def consumer: Option[ActorRef] =
|
||||
leaderAddress map (a ⇒ context.actorFor(RootActorPath(a) /
|
||||
def consumer: Option[ActorSelection] =
|
||||
leaderAddress map (a ⇒ context.actorSelection(RootActorPath(a) /
|
||||
"user" / "singleton" / "consumer"))
|
||||
}
|
||||
//#singleton-proxy
|
||||
|
|
@ -181,11 +184,11 @@ object ClusterSingletonManagerSpec extends MultiNodeConfig {
|
|||
def receive = {
|
||||
case state: CurrentClusterState ⇒ leaderAddress = state.roleLeader(role)
|
||||
case RoleLeaderChanged(r, leader) ⇒ if (r == role) leaderAddress = leader
|
||||
case other ⇒ consumer foreach { _ forward other }
|
||||
case other ⇒ consumer foreach { _.tell(other, sender) }
|
||||
}
|
||||
|
||||
def consumer: Option[ActorRef] =
|
||||
leaderAddress map (a ⇒ context.actorFor(RootActorPath(a) /
|
||||
def consumer: Option[ActorSelection] =
|
||||
leaderAddress map (a ⇒ context.actorSelection(RootActorPath(a) /
|
||||
"user" / "singleton" / "consumer"))
|
||||
}
|
||||
//#singleton-proxy2
|
||||
|
|
@ -208,6 +211,8 @@ class ClusterSingletonManagerSpec extends MultiNodeSpec(ClusterSingletonManagerS
|
|||
|
||||
override def initialParticipants = roles.size
|
||||
|
||||
val identifyProbe = TestProbe()
|
||||
|
||||
//#sort-cluster-roles
|
||||
// Sort the roles in the order used by the cluster.
|
||||
lazy val sortedWorkerNodes: immutable.IndexedSeq[RoleName] = {
|
||||
|
|
@ -220,7 +225,10 @@ class ClusterSingletonManagerSpec extends MultiNodeSpec(ClusterSingletonManagerS
|
|||
}
|
||||
//#sort-cluster-roles
|
||||
|
||||
def queue: ActorRef = system.actorFor(node(controller) / "user" / "queue")
|
||||
def queue: ActorRef = {
|
||||
system.actorSelection(node(controller) / "user" / "queue").tell(Identify("queue"), identifyProbe.ref)
|
||||
identifyProbe.expectMsgType[ActorIdentity].ref.get
|
||||
}
|
||||
|
||||
def join(from: RoleName, to: RoleName): Unit = {
|
||||
runOn(from) {
|
||||
|
|
@ -241,8 +249,8 @@ class ClusterSingletonManagerSpec extends MultiNodeSpec(ClusterSingletonManagerS
|
|||
//#create-singleton-manager
|
||||
}
|
||||
|
||||
def consumer(leader: RoleName): ActorRef =
|
||||
system.actorFor(RootActorPath(node(leader).address) / "user" / "singleton" / "consumer")
|
||||
def consumer(leader: RoleName): ActorSelection =
|
||||
system.actorSelection(RootActorPath(node(leader).address) / "user" / "singleton" / "consumer")
|
||||
|
||||
def verify(leader: RoleName, msg: Int, expectedCurrent: Int): Unit = {
|
||||
enterBarrier("before-" + leader.name + "-verified")
|
||||
|
|
@ -340,10 +348,14 @@ class ClusterSingletonManagerSpec extends MultiNodeSpec(ClusterSingletonManagerS
|
|||
verify(newLeaderRole, msg = 7, expectedCurrent = 6)
|
||||
|
||||
runOn(leaveRole) {
|
||||
val singleton = system.actorFor("/user/singleton")
|
||||
system.actorSelection("/user/singleton").tell(Identify("singleton"), identifyProbe.ref)
|
||||
identifyProbe.expectMsgPF() {
|
||||
case ActorIdentity("singleton", None) ⇒ // already terminated
|
||||
case ActorIdentity("singleton", Some(singleton)) ⇒
|
||||
watch(singleton)
|
||||
expectMsgType[Terminated].actor must be(singleton)
|
||||
}
|
||||
}
|
||||
|
||||
enterBarrier("after-leave")
|
||||
}
|
||||
|
|
|
|||
|
|
@ -5,7 +5,6 @@
|
|||
package akka.contrib.pattern
|
||||
|
||||
import language.postfixOps
|
||||
|
||||
import akka.remote.testkit.MultiNodeConfig
|
||||
import akka.remote.testkit.MultiNodeSpec
|
||||
import akka.remote.testkit.STMultiNodeSpec
|
||||
|
|
@ -18,6 +17,8 @@ import scala.concurrent.duration._
|
|||
import akka.actor.FSM
|
||||
import akka.actor.ActorRef
|
||||
import akka.testkit.TestProbe
|
||||
import akka.actor.ActorIdentity
|
||||
import akka.actor.Identify
|
||||
|
||||
object ReliableProxySpec extends MultiNodeConfig {
|
||||
val local = role("local")
|
||||
|
|
@ -68,7 +69,8 @@ class ReliableProxySpec extends MultiNodeSpec(ReliableProxySpec) with STMultiNod
|
|||
//#demo
|
||||
import akka.contrib.pattern.ReliableProxy
|
||||
|
||||
target = system.actorFor(node(remote) / "user" / "echo")
|
||||
system.actorSelection(node(remote) / "user" / "echo") ! Identify("echo")
|
||||
target = expectMsgType[ActorIdentity].ref.get
|
||||
proxy = system.actorOf(Props(new ReliableProxy(target, 100.millis)), "proxy")
|
||||
//#demo
|
||||
proxy ! FSM.SubscribeTransitionCallBack(testActor)
|
||||
|
|
|
|||
|
|
@ -194,34 +194,43 @@ Looking up Actors by Concrete Path
|
|||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
In addition, actor references may be looked up using the
|
||||
:meth:`ActorSystem.actorFor` method, which returns a local or remote actor
|
||||
reference. The reference can be reused for communicating with said actor during
|
||||
the whole lifetime of the actor. In the case of a local actor reference, the
|
||||
named actor needs to exist before the lookup, or else the acquired reference
|
||||
will be an :class:`EmptyLocalActorRef`. This will be true even if an actor with
|
||||
that exact path is created after acquiring the actor reference. For remote actor
|
||||
references acquired with `actorFor` the behaviour is different and sending messages
|
||||
to such a reference will under the hood look up the actor by path on the remote
|
||||
system for every message send.
|
||||
:meth:`ActorSystem.actorSelection` method. The selection can be used for
|
||||
communicating with said actor and the actor corresponding to the selection
|
||||
is looked up when delivering each message.
|
||||
|
||||
To acquire an :class:`ActorRef` that is bound to the life-cycle of a specific actor
|
||||
you need to send a message, such as the built-in :class:`Identify` message, to the actor
|
||||
and use the ``sender`` reference of a reply from the actor.
|
||||
|
||||
.. note::
|
||||
|
||||
``actorFor`` is deprecated in favor of ``actorSelection`` because actor references
|
||||
acquired with ``actorFor`` behave differently for local and remote actors.
|
||||
In the case of a local actor reference, the named actor needs to exist before the
|
||||
lookup, or else the acquired reference will be an :class:`EmptyLocalActorRef`.
|
||||
This will be true even if an actor with that exact path is created after acquiring
|
||||
the actor reference. For remote actor references acquired with `actorFor` the
|
||||
behaviour is different and sending messages to such a reference will under the hood
|
||||
look up the actor by path on the remote system for every message send.
|
||||
|
||||
Absolute vs. Relative Paths
|
||||
```````````````````````````
|
||||
|
||||
In addition to :meth:`ActorSystem.actorFor` there is also
|
||||
:meth:`ActorContext.actorFor`, which is available inside any actor as
|
||||
``context.actorFor``. This yields an actor reference much like its twin on
|
||||
In addition to :meth:`ActorSystem.actorSelection` there is also
|
||||
:meth:`ActorContext.actorSelection`, which is available inside any actor as
|
||||
``context.actorSelection``. This yields an actor selection much like its twin on
|
||||
:class:`ActorSystem`, but instead of looking up the path starting from the root
|
||||
of the actor tree it starts out on the current actor. Path elements consisting
|
||||
of two dots (``".."``) may be used to access the parent actor. You can for
|
||||
example send a message to a specific sibling::
|
||||
|
||||
context.actorFor("../brother") ! msg
|
||||
context.actorSelection("../brother") ! msg
|
||||
|
||||
Absolute paths may of course also be looked up on `context` in the usual way, i.e.
|
||||
|
||||
.. code-block:: scala
|
||||
|
||||
context.actorFor("/user/serviceA") ! msg
|
||||
context.actorSelection("/user/serviceA") ! msg
|
||||
|
||||
will work as expected.
|
||||
|
||||
|
|
@ -249,10 +258,10 @@ extracting the sender references, and then watch all discovered concrete
|
|||
actors. This scheme of resolving a selection may be improved upon in a future
|
||||
release.
|
||||
|
||||
.. _actorOf-vs-actorFor:
|
||||
.. _actorOf-vs-actorSelection:
|
||||
|
||||
Summary: ``actorOf`` vs. ``actorFor``
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
Summary: ``actorOf`` vs. ``actorSelection`` vs. ``actorFor``
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
.. note::
|
||||
|
||||
|
|
@ -263,8 +272,12 @@ Summary: ``actorOf`` vs. ``actorFor``
|
|||
child of the context on which this method is invoked (which may be any
|
||||
actor or actor system).
|
||||
|
||||
- ``actorFor`` only ever looks up an existing actor, i.e. does not create
|
||||
one.
|
||||
- ``actorSelection`` only ever looks up existing actors when messages are
|
||||
delivered, i.e. does not create actors, or verify existence of actors
|
||||
when the selection is created.
|
||||
|
||||
- ``actorFor`` (deprecated in favor of actorSelection) only ever looks up an
|
||||
existing actor, i.e. does not create one.
|
||||
|
||||
Actor Reference and Path Equality
|
||||
---------------------------------
|
||||
|
|
|
|||
|
|
@ -176,12 +176,13 @@ public class TypedActorDocTestBase {
|
|||
|
||||
@Test public void proxyAnyActorRef() {
|
||||
try {
|
||||
final ActorRef actorRefToRemoteActor = system.deadLetters();
|
||||
//#typed-actor-remote
|
||||
Squarer typedActor =
|
||||
TypedActor.get(system).
|
||||
typedActorOf(
|
||||
new TypedProps<Squarer>(Squarer.class),
|
||||
system.actorFor("akka://SomeSystem@somehost:2552/user/some/foobar")
|
||||
actorRefToRemoteActor
|
||||
);
|
||||
//Use "typedActor" as a FooBar
|
||||
//#typed-actor-remote
|
||||
|
|
|
|||
|
|
@ -15,6 +15,7 @@ import akka.dispatch.Futures;
|
|||
import akka.dispatch.Mapper;
|
||||
import scala.concurrent.Await;
|
||||
import scala.concurrent.duration.Duration;
|
||||
import akka.testkit.AkkaSpec;
|
||||
import akka.util.Timeout;
|
||||
//#import-future
|
||||
|
||||
|
|
@ -31,6 +32,12 @@ import akka.japi.Procedure;
|
|||
import akka.actor.Terminated;
|
||||
//#import-watch
|
||||
|
||||
//#import-identify
|
||||
import akka.actor.ActorSelection;
|
||||
import akka.actor.Identify;
|
||||
import akka.actor.ActorIdentity;
|
||||
//#import-identify
|
||||
|
||||
//#import-gracefulStop
|
||||
import static akka.pattern.Patterns.gracefulStop;
|
||||
import scala.concurrent.Future;
|
||||
|
|
@ -58,6 +65,8 @@ import akka.actor.UntypedActor;
|
|||
import akka.actor.UntypedActorFactory;
|
||||
|
||||
import org.junit.Test;
|
||||
import org.junit.AfterClass;
|
||||
import org.junit.BeforeClass;
|
||||
import scala.Option;
|
||||
import java.lang.Object;
|
||||
import java.util.Iterator;
|
||||
|
|
@ -65,6 +74,19 @@ import akka.pattern.Patterns;
|
|||
|
||||
public class UntypedActorDocTestBase {
|
||||
|
||||
private static ActorSystem system;
|
||||
|
||||
@BeforeClass
|
||||
public static void beforeAll() {
|
||||
system = ActorSystem.create("MySystem", AkkaSpec.testConf());
|
||||
}
|
||||
|
||||
@AfterClass
|
||||
public static void afterAll() {
|
||||
system.shutdown();
|
||||
system = null;
|
||||
}
|
||||
|
||||
@Test
|
||||
public void createProps() {
|
||||
//#creating-props-config
|
||||
|
|
@ -96,86 +118,71 @@ public class UntypedActorDocTestBase {
|
|||
@Test
|
||||
public void contextActorOf() {
|
||||
//#context-actorOf
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
ActorRef myActor = system.actorOf(new Props(MyUntypedActor.class), "myactor");
|
||||
ActorRef myActor = system.actorOf(new Props(MyUntypedActor.class), "myactor2");
|
||||
//#context-actorOf
|
||||
myActor.tell("test", null);
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void constructorActorOf() {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
//#creating-constructor
|
||||
// allows passing in arguments to the MyActor constructor
|
||||
ActorRef myActor = system.actorOf(new Props(new UntypedActorFactory() {
|
||||
public UntypedActor create() {
|
||||
return new MyActor("...");
|
||||
}
|
||||
}), "myactor");
|
||||
}), "myactor3");
|
||||
//#creating-constructor
|
||||
myActor.tell("test", null);
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void propsActorOf() {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
//#creating-props
|
||||
ActorRef myActor = system.actorOf(
|
||||
new Props(MyUntypedActor.class).withDispatcher("my-dispatcher"), "myactor");
|
||||
new Props(MyUntypedActor.class).withDispatcher("my-dispatcher"), "myactor4");
|
||||
//#creating-props
|
||||
myActor.tell("test", null);
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void usingAsk() throws Exception {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
ActorRef myActor = system.actorOf(new Props(new UntypedActorFactory() {
|
||||
public UntypedActor create() {
|
||||
return new MyAskActor();
|
||||
}
|
||||
}), "myactor");
|
||||
}), "myactor5");
|
||||
|
||||
//#using-ask
|
||||
Future<Object> future = Patterns.ask(myActor, "Hello", 1000);
|
||||
Object result = Await.result(future, Duration.create(1, TimeUnit.SECONDS));
|
||||
//#using-ask
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void receiveTimeout() {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
ActorRef myActor = system.actorOf(new Props(MyReceivedTimeoutUntypedActor.class));
|
||||
myActor.tell("Hello", null);
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void usePoisonPill() {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
ActorRef myActor = system.actorOf(new Props(MyUntypedActor.class));
|
||||
//#poison-pill
|
||||
myActor.tell(PoisonPill.getInstance(), null);
|
||||
//#poison-pill
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void useKill() {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
ActorRef victim = system.actorOf(new Props(MyUntypedActor.class));
|
||||
//#kill
|
||||
victim.tell(Kill.getInstance(), null);
|
||||
//#kill
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void useBecome() {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
ActorRef myActor = system.actorOf(new Props(new UntypedActorFactory() {
|
||||
public UntypedActor create() {
|
||||
return new HotSwapActor();
|
||||
|
|
@ -184,21 +191,24 @@ public class UntypedActorDocTestBase {
|
|||
myActor.tell("foo", null);
|
||||
myActor.tell("bar", null);
|
||||
myActor.tell("bar", null);
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void useWatch() throws Exception {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
ActorRef myActor = system.actorOf(new Props(WatchActor.class));
|
||||
Future<Object> future = Patterns.ask(myActor, "kill", 1000);
|
||||
assert Await.result(future, Duration.create("1 second")).equals("finished");
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
@Test
|
||||
public void useIdentify() throws Exception {
|
||||
ActorRef a = system.actorOf(new Props(MyUntypedActor.class), "another");
|
||||
ActorRef b = system.actorOf(new Props(Follower.class));
|
||||
system.stop(a);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void usePatternsGracefulStop() throws Exception {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
ActorRef actorRef = system.actorOf(new Props(MyUntypedActor.class));
|
||||
//#gracefulStop
|
||||
try {
|
||||
|
|
@ -210,7 +220,6 @@ public class UntypedActorDocTestBase {
|
|||
// the actor wasn't stopped within 5 seconds
|
||||
}
|
||||
//#gracefulStop
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
class Result {
|
||||
|
|
@ -225,7 +234,6 @@ public class UntypedActorDocTestBase {
|
|||
|
||||
@Test
|
||||
public void usePatternsAskPipe() {
|
||||
ActorSystem system = ActorSystem.create("MySystem");
|
||||
ActorRef actorA = system.actorOf(new Props(MyUntypedActor.class));
|
||||
ActorRef actorB = system.actorOf(new Props(MyUntypedActor.class));
|
||||
ActorRef actorC = system.actorOf(new Props(MyUntypedActor.class));
|
||||
|
|
@ -251,7 +259,6 @@ public class UntypedActorDocTestBase {
|
|||
|
||||
pipe(transformed, system.dispatcher()).to(actorC);
|
||||
//#ask-pipe
|
||||
system.shutdown();
|
||||
}
|
||||
|
||||
public static class MyActor extends UntypedActor {
|
||||
|
|
@ -399,4 +406,40 @@ public class UntypedActorDocTestBase {
|
|||
}
|
||||
//#watch
|
||||
|
||||
static
|
||||
//#identify
|
||||
public class Follower extends UntypedActor {
|
||||
String identifyId = "1";
|
||||
{
|
||||
ActorSelection selection =
|
||||
getContext().actorSelection("/user/another");
|
||||
selection.tell(new Identify(identifyId), getSelf());
|
||||
}
|
||||
ActorRef another;
|
||||
|
||||
@Override
|
||||
public void onReceive(Object message) {
|
||||
if (message instanceof ActorIdentity) {
|
||||
ActorIdentity identity = (ActorIdentity) message;
|
||||
if (identity.correlationId().equals(identifyId)) {
|
||||
ActorRef ref = identity.getRef();
|
||||
if (ref == null)
|
||||
getContext().stop(getSelf());
|
||||
else {
|
||||
another = ref;
|
||||
getContext().watch(another);
|
||||
}
|
||||
}
|
||||
} else if (message instanceof Terminated) {
|
||||
final Terminated t = (Terminated) message;
|
||||
if (t.getActor().equals(another)) {
|
||||
getContext().stop(getSelf());
|
||||
}
|
||||
} else {
|
||||
unhandled(message);
|
||||
}
|
||||
}
|
||||
}
|
||||
//#identify
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -49,10 +49,10 @@ public class SerializationDocTestBase {
|
|||
//#my-own-serializer
|
||||
|
||||
@Test public void serializeActorRefs() {
|
||||
final ActorSystem theActorSystem =
|
||||
final ExtendedActorSystem extendedSystem = (ExtendedActorSystem)
|
||||
ActorSystem.create("whatever");
|
||||
final ActorRef theActorRef =
|
||||
theActorSystem.deadLetters(); // Of course this should be you
|
||||
extendedSystem.deadLetters(); // Of course this should be you
|
||||
|
||||
//#actorref-serializer
|
||||
// Serialize
|
||||
|
|
@ -63,10 +63,10 @@ public class SerializationDocTestBase {
|
|||
|
||||
// Deserialize
|
||||
// (beneath fromBinary)
|
||||
final ActorRef deserializedActorRef = theActorSystem.actorFor(identifier);
|
||||
final ActorRef deserializedActorRef = extendedSystem.provider().resolveActorRef(identifier);
|
||||
// Then just use the ActorRef
|
||||
//#actorref-serializer
|
||||
theActorSystem.shutdown();
|
||||
extendedSystem.shutdown();
|
||||
}
|
||||
|
||||
static
|
||||
|
|
|
|||
|
|
@ -16,6 +16,7 @@ import akka.actor.ActorKilledException;
|
|||
import akka.actor.ActorRef;
|
||||
import akka.actor.ActorSystem;
|
||||
import akka.actor.Kill;
|
||||
import akka.actor.PoisonPill;
|
||||
import akka.actor.Props;
|
||||
import akka.actor.Terminated;
|
||||
import akka.actor.UntypedActor;
|
||||
|
|
@ -326,11 +327,12 @@ public class TestKitDocTest {
|
|||
|
||||
@Test
|
||||
public void demonstrateWatch() {
|
||||
final ActorRef target = system.actorFor("/buh");
|
||||
final ActorRef target = system.actorOf(new Props(MyActor.class));
|
||||
//#test-probe-watch
|
||||
new JavaTestKit(system) {{
|
||||
final JavaTestKit probe = new JavaTestKit(system);
|
||||
probe.watch(target);
|
||||
target.tell(PoisonPill.getInstance(), null);
|
||||
final Terminated msg = probe.expectMsgClass(Terminated.class);
|
||||
assertEquals(msg.getActor(), target);
|
||||
}};
|
||||
|
|
|
|||
|
|
@ -70,17 +70,24 @@ reference file for more information:
|
|||
Looking up Remote Actors
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
``actorFor(path)`` will obtain an ``ActorRef`` to an Actor on a remote node::
|
||||
``actorSelection(path)`` will obtain an ``ActorSelection`` to an Actor on a remote node::
|
||||
|
||||
ActorRef actor = context.actorFor("akka.tcp://app@10.0.0.1:2552/user/serviceA/worker");
|
||||
ActorSelection selection =
|
||||
context.actorSelection("akka.tcp://app@10.0.0.1:2552/user/serviceA/worker");
|
||||
|
||||
As you can see from the example above the following pattern is used to find an ``ActorRef`` on a remote node::
|
||||
As you can see from the example above the following pattern is used to find an actor on a remote node::
|
||||
|
||||
akka.<protocol>://<actorsystemname>@<hostname>:<port>/<actor path>
|
||||
|
||||
Once you obtained a reference to the actor you can interact with it they same way you would with a local actor, e.g.::
|
||||
Once you obtained a selection to the actor you can interact with it they same way you would with a local actor, e.g.::
|
||||
|
||||
actor.tell("Pretty awesome feature", getSelf());
|
||||
selection.tell("Pretty awesome feature", getSelf());
|
||||
|
||||
To acquire an :class:`ActorRef` for an :class:`ActorSelection` you need to
|
||||
send a message to the selection and use the ``getSender`` reference of the reply from
|
||||
the actor. There is a built-in ``Identify`` message that all Actors will understand
|
||||
and automatically reply to with a ``ActorIdentity`` message containing the
|
||||
:class:`ActorRef`.
|
||||
|
||||
.. note::
|
||||
|
||||
|
|
@ -264,9 +271,9 @@ and it is created from an actor system using the aforementioned client’s confi
|
|||
.. includecode:: ../../../akka-samples/akka-sample-remote/src/main/java/sample/remote/calculator/java/JLookupApplication.java
|
||||
:include: setup
|
||||
|
||||
Requests which come in via ``doSomething`` will be sent to the client actor
|
||||
along with the reference which was looked up earlier. Observe how the actor
|
||||
system name using in ``actorFor`` matches the remote system’s name, as do IP
|
||||
Requests which come in via ``doSomething`` will be sent to the client actor,
|
||||
which will use the actor reference that was identified earlier. Observe how the actor
|
||||
system name using in ``actorSelection`` matches the remote system’s name, as do IP
|
||||
and port number. Top-level actors are always created below the ``"/user"``
|
||||
guardian, which supervises them.
|
||||
|
||||
|
|
|
|||
|
|
@ -206,11 +206,11 @@ Proxying
|
|||
--------
|
||||
|
||||
You can use the ``typedActorOf`` that takes a TypedProps and an ActorRef to proxy the given ActorRef as a TypedActor.
|
||||
This is usable if you want to communicate remotely with TypedActors on other machines, just look them up with ``actorFor`` and pass the ``ActorRef`` to ``typedActorOf``.
|
||||
This is usable if you want to communicate remotely with TypedActors on other machines, just pass the ``ActorRef`` to ``typedActorOf``.
|
||||
|
||||
Lookup & Remoting
|
||||
-----------------
|
||||
|
||||
Since ``TypedActors`` are backed by ``Akka Actors``, you can use ``actorFor`` together with ``typedActorOf`` to proxy ``ActorRefs`` potentially residing on remote nodes.
|
||||
Since ``TypedActors`` are backed by ``Akka Actors``, you can use ``typedActorOf`` to proxy ``ActorRefs`` potentially residing on remote nodes.
|
||||
|
||||
.. includecode:: code/docs/actor/TypedActorDocTestBase.java#typed-actor-remote
|
||||
|
|
|
|||
|
|
@ -27,8 +27,7 @@ Creating Actors
|
|||
Since Akka enforces parental supervision every actor is supervised and
|
||||
(potentially) the supervisor of its children, it is advisable that you
|
||||
familiarize yourself with :ref:`actor-systems` and :ref:`supervision` and it
|
||||
may also help to read :ref:`actorOf-vs-actorFor` (the whole of
|
||||
:ref:`addressing` is recommended reading in any case).
|
||||
may also help to read :ref:`addressing`.
|
||||
|
||||
Defining an Actor class
|
||||
-----------------------
|
||||
|
|
@ -264,8 +263,10 @@ sent to a stopped actor will be redirected to the :obj:`deadLetters` of the
|
|||
:obj:`ActorSystem`.
|
||||
|
||||
|
||||
Identifying Actors
|
||||
==================
|
||||
.. _actorSelection-java:
|
||||
|
||||
Identifying Actors via Actor Selection
|
||||
======================================
|
||||
|
||||
As described in :ref:`addressing`, each actor has a unique logical path, which
|
||||
is obtained by following the chain of actors from child to parent until
|
||||
|
|
@ -274,11 +275,13 @@ differ if the supervision chain includes any remote supervisors. These paths
|
|||
are used by the system to look up actors, e.g. when a remote message is
|
||||
received and the recipient is searched, but they are also useful more directly:
|
||||
actors may look up other actors by specifying absolute or relative
|
||||
paths—logical or physical—and receive back an :class:`ActorRef` with the
|
||||
paths—logical or physical—and receive back an :class:`ActorSelection` with the
|
||||
result::
|
||||
|
||||
getContext().actorFor("/user/serviceA/actor") // will look up this absolute path
|
||||
getContext().actorFor("../joe") // will look up sibling beneath same supervisor
|
||||
// will look up this absolute path
|
||||
getContext().actorSelection("/user/serviceA/actor");
|
||||
// will look up sibling beneath same supervisor
|
||||
getContext().actorSelection("../joe");
|
||||
|
||||
The supplied path is parsed as a :class:`java.net.URI`, which basically means
|
||||
that it is split on ``/`` into path elements. If the path starts with ``/``, it
|
||||
|
|
@ -289,18 +292,43 @@ currently traversed actor, otherwise it will step “down” to the named child.
|
|||
It should be noted that the ``..`` in actor paths here always means the logical
|
||||
structure, i.e. the supervisor.
|
||||
|
||||
If the path being looked up does not exist, a special actor reference is
|
||||
returned which behaves like the actor system’s dead letter queue but retains
|
||||
its identity (i.e. the path which was looked up).
|
||||
The path elements of an actor selection may contain wildcard patterns allowing for
|
||||
broadcasting of messages to that section::
|
||||
|
||||
Remote actor addresses may also be looked up, if remoting is enabled::
|
||||
// will look all children to serviceB with names starting with worker
|
||||
getContext().actorSelection("/user/serviceB/worker*");
|
||||
// will look up all siblings beneath same supervisor
|
||||
getContext().actorSelection("../*");
|
||||
|
||||
getContext().actorFor("akka.tcp://app@otherhost:1234/user/serviceB")
|
||||
Messages can be sent via the :class:`ActorSelection` and the path of the
|
||||
:class:`ActorSelection` is looked up when delivering each message. If the selection
|
||||
does not match any actors the message will be dropped.
|
||||
|
||||
These look-ups return a (possibly remote) actor reference immediately, so you
|
||||
will have to send to it and await a reply in order to verify that ``serviceB``
|
||||
is actually reachable and running. An example demonstrating actor look-up is
|
||||
given in :ref:`remote-lookup-sample-java`.
|
||||
To acquire an :class:`ActorRef` for an :class:`ActorSelection` you need to
|
||||
send a message to the selection and use the ``getSender`` reference of the reply from
|
||||
the actor. There is a built-in ``Identify`` message that all Actors will understand
|
||||
and automatically reply to with a ``ActorIdentity`` message containing the
|
||||
:class:`ActorRef`.
|
||||
|
||||
.. includecode:: code/docs/actor/UntypedActorDocTestBase.java
|
||||
:include: identify-imports,identify
|
||||
|
||||
Remote actor addresses may also be looked up, if :ref:`remoting <remoting-java>` is enabled::
|
||||
|
||||
getContext().actorSelection("akka.tcp://app@otherhost:1234/user/serviceB");
|
||||
|
||||
An example demonstrating remote actor look-up is given in :ref:`remote-lookup-sample-java`.
|
||||
|
||||
.. note::
|
||||
|
||||
``actorFor`` is deprecated in favor of ``actorSelection`` because actor references
|
||||
acquired with ``actorFor`` behave differently for local and remote actors.
|
||||
In the case of a local actor reference, the named actor needs to exist before the
|
||||
lookup, or else the acquired reference will be an :class:`EmptyLocalActorRef`.
|
||||
This will be true even if an actor with that exact path is created after acquiring
|
||||
the actor reference. For remote actor references acquired with `actorFor` the
|
||||
behaviour is different and sending messages to such a reference will under the hood
|
||||
look up the actor by path on the remote system for every message send.
|
||||
|
||||
Messages and immutability
|
||||
=========================
|
||||
|
|
|
|||
|
|
@ -152,6 +152,33 @@ available via the ``inbound`` boolean field of the event.
|
|||
|
||||
New configuration settings are also available, see the remoting documentation for more detail: :ref:`remoting-scala`
|
||||
|
||||
.. _migration_2.2_actorSelection:
|
||||
|
||||
Use ``actorSelection`` instead of ``actorFor``
|
||||
==============================================
|
||||
|
||||
``actorFor`` is deprecated in favor of ``actorSelection`` because actor references
|
||||
acquired with ``actorFor`` behave differently for local and remote actors.
|
||||
In the case of a local actor reference, the named actor needs to exist before the
|
||||
lookup, or else the acquired reference will be an :class:`EmptyLocalActorRef`.
|
||||
This will be true even if an actor with that exact path is created after acquiring
|
||||
the actor reference. For remote actor references acquired with `actorFor` the
|
||||
behaviour is different and sending messages to such a reference will under the hood
|
||||
look up the actor by path on the remote system for every message send.
|
||||
|
||||
Messages can be sent via the :class:`ActorSelection` and the path of the
|
||||
:class:`ActorSelection` is looked up when delivering each message. If the selection
|
||||
does not match any actors the message will be dropped.
|
||||
|
||||
To acquire an :class:`ActorRef` for an :class:`ActorSelection` you need to
|
||||
send a message to the selection and use the ``sender`` reference of the reply from
|
||||
the actor. There is a built-in ``Identify`` message that all Actors will understand
|
||||
and automatically reply to with a ``ActorIdentity`` message containing the
|
||||
:class:`ActorRef`.
|
||||
|
||||
Read more about ``actorSelection`` in :ref:`docs for Java <actorSelection-java>` or
|
||||
:ref:`docs for Scala <actorSelection-scala>`.
|
||||
|
||||
ActorRef equality and sending to remote actors
|
||||
==============================================
|
||||
|
||||
|
|
@ -187,9 +214,32 @@ messages to remote deployed children of a restarted parent.
|
|||
This may also have implications if you compare the ``ActorRef`` received in a ``Terminated`` message
|
||||
with an expected ``ActorRef``.
|
||||
|
||||
.. _migration_2.2_actorSelection:
|
||||
The following will not match::
|
||||
|
||||
Use ``actorSelection`` instead of ``actorFor``
|
||||
==============================================
|
||||
val ref = context.actorFor("akka.tcp://actorSystemName@10.0.0.1:2552/user/actorName")
|
||||
|
||||
FIXME: ticket #3074
|
||||
def receive = {
|
||||
case Terminated(`ref`) => // ...
|
||||
}
|
||||
|
||||
Instead, use actorSelection followed by identify request, and watch the verified actor reference::
|
||||
|
||||
val selection = context.actorSelection("akka.tcp://actorSystemName@10.0.0.1:2552/user/actorName")
|
||||
selection ! Identify(None)
|
||||
var ref: ActorRef = _
|
||||
|
||||
def receive = {
|
||||
case ActorIdentity(_, Some(actorRef)) =>
|
||||
ref = actorRef
|
||||
context watch ref
|
||||
case ActorIdentity(_, None) => // not alive
|
||||
case Terminated(`ref`) => // ...
|
||||
}
|
||||
|
||||
|
||||
|
||||
Use ``watch`` instead of ``isTerminated``
|
||||
=========================================
|
||||
|
||||
``ActorRef.isTerminated`` is deprecated in favor of ``ActorContext.watch`` because
|
||||
``isTerminated`` behaves differently for local and remote actors.
|
||||
|
|
|
|||
|
|
@ -27,8 +27,7 @@ Creating Actors
|
|||
Since Akka enforces parental supervision every actor is supervised and
|
||||
(potentially) the supervisor of its children, it is advisable that you
|
||||
familiarize yourself with :ref:`actor-systems` and :ref:`supervision` and it
|
||||
may also help to read :ref:`actorOf-vs-actorFor` (the whole of
|
||||
:ref:`addressing` is recommended reading in any case).
|
||||
may also help to read :ref:`addressing`.
|
||||
|
||||
Defining an Actor class
|
||||
-----------------------
|
||||
|
|
@ -375,8 +374,10 @@ to run after message queuing has been disabled for this actor, i.e. messages
|
|||
sent to a stopped actor will be redirected to the :obj:`deadLetters` of the
|
||||
:obj:`ActorSystem`.
|
||||
|
||||
Identifying Actors
|
||||
==================
|
||||
.. _actorSelection-scala:
|
||||
|
||||
Identifying Actors via Actor Selection
|
||||
======================================
|
||||
|
||||
As described in :ref:`addressing`, each actor has a unique logical path, which
|
||||
is obtained by following the chain of actors from child to parent until
|
||||
|
|
@ -385,11 +386,13 @@ differ if the supervision chain includes any remote supervisors. These paths
|
|||
are used by the system to look up actors, e.g. when a remote message is
|
||||
received and the recipient is searched, but they are also useful more directly:
|
||||
actors may look up other actors by specifying absolute or relative
|
||||
paths—logical or physical—and receive back an :class:`ActorRef` with the
|
||||
paths—logical or physical—and receive back an :class:`ActorSelection` with the
|
||||
result::
|
||||
|
||||
context.actorFor("/user/serviceA/aggregator") // will look up this absolute path
|
||||
context.actorFor("../joe") // will look up sibling beneath same supervisor
|
||||
// will look up this absolute path
|
||||
context.actorSelection("/user/serviceA/aggregator")
|
||||
// will look up sibling beneath same supervisor
|
||||
context.actorSelection("../joe")
|
||||
|
||||
The supplied path is parsed as a :class:`java.net.URI`, which basically means
|
||||
that it is split on ``/`` into path elements. If the path starts with ``/``, it
|
||||
|
|
@ -400,18 +403,42 @@ currently traversed actor, otherwise it will step “down” to the named child.
|
|||
It should be noted that the ``..`` in actor paths here always means the logical
|
||||
structure, i.e. the supervisor.
|
||||
|
||||
If the path being looked up does not exist, a special actor reference is
|
||||
returned which behaves like the actor system’s dead letter queue but retains
|
||||
its identity (i.e. the path which was looked up).
|
||||
The path elements of an actor selection may contain wildcard patterns allowing for
|
||||
broadcasting of messages to that section::
|
||||
|
||||
Remote actor addresses may also be looked up, if remoting is enabled::
|
||||
// will look all children to serviceB with names starting with worker
|
||||
context.actorSelection("/user/serviceB/worker*")
|
||||
// will look up all siblings beneath same supervisor
|
||||
context.actorSelection("../*")
|
||||
|
||||
context.actorFor("akka.tcp://app@otherhost:1234/user/serviceB")
|
||||
Messages can be sent via the :class:`ActorSelection` and the path of the
|
||||
:class:`ActorSelection` is looked up when delivering each message. If the selection
|
||||
does not match any actors the message will be dropped.
|
||||
|
||||
These look-ups return a (possibly remote) actor reference immediately, so you
|
||||
will have to send to it and await a reply in order to verify that ``serviceB``
|
||||
is actually reachable and running. An example demonstrating actor look-up is
|
||||
given in :ref:`remote-lookup-sample-scala`.
|
||||
To acquire an :class:`ActorRef` for an :class:`ActorSelection` you need to
|
||||
send a message to the selection and use the ``sender`` reference of the reply from
|
||||
the actor. There is a built-in ``Identify`` message that all Actors will understand
|
||||
and automatically reply to with a ``ActorIdentity`` message containing the
|
||||
:class:`ActorRef`.
|
||||
|
||||
.. includecode:: code/docs/actor/ActorDocSpec.scala#identify
|
||||
|
||||
Remote actor addresses may also be looked up, if :ref:`remoting <remoting-scala>` is enabled::
|
||||
|
||||
context.actorSelection("akka.tcp://app@otherhost:1234/user/serviceB")
|
||||
|
||||
An example demonstrating actor look-up is given in :ref:`remote-lookup-sample-scala`.
|
||||
|
||||
.. note::
|
||||
|
||||
``actorFor`` is deprecated in favor of ``actorSelection`` because actor references
|
||||
acquired with ``actorFor`` behaves different for local and remote actors.
|
||||
In the case of a local actor reference, the named actor needs to exist before the
|
||||
lookup, or else the acquired reference will be an :class:`EmptyLocalActorRef`.
|
||||
This will be true even if an actor with that exact path is created after acquiring
|
||||
the actor reference. For remote actor references acquired with `actorFor` the
|
||||
behaviour is different and sending messages to such a reference will under the hood
|
||||
look up the actor by path on the remote system for every message send.
|
||||
|
||||
Messages and immutability
|
||||
=========================
|
||||
|
|
|
|||
|
|
@ -327,6 +327,37 @@ class ActorDocSpec extends AkkaSpec(Map("akka.loglevel" -> "INFO")) {
|
|||
expectMsg("finished")
|
||||
}
|
||||
|
||||
"using Identify" in {
|
||||
//#identify
|
||||
import akka.actor.{ Actor, Props, Identify, ActorIdentity, Terminated }
|
||||
|
||||
class Follower extends Actor {
|
||||
val identifyId = 1
|
||||
context.actorSelection("/user/another") ! Identify(identifyId)
|
||||
|
||||
def receive = {
|
||||
case ActorIdentity(`identifyId`, Some(ref)) ⇒
|
||||
context.watch(ref)
|
||||
context.become(active(ref))
|
||||
case ActorIdentity(`identifyId`, None) ⇒ context.stop(self)
|
||||
|
||||
}
|
||||
|
||||
def active(another: ActorRef): Actor.Receive = {
|
||||
case Terminated(`another`) ⇒ context.stop(self)
|
||||
}
|
||||
}
|
||||
//#identify
|
||||
|
||||
val a = system.actorOf(Props(new Actor {
|
||||
def receive = Actor.emptyBehavior
|
||||
}))
|
||||
val b = system.actorOf(Props(new Follower))
|
||||
watch(b)
|
||||
system.stop(a)
|
||||
expectMsgType[akka.actor.Terminated].actor must be === b
|
||||
}
|
||||
|
||||
"using pattern gracefulStop" in {
|
||||
val actorRef = system.actorOf(Props[MyActor])
|
||||
//#gracefulStop
|
||||
|
|
@ -386,9 +417,9 @@ class ActorDocSpec extends AkkaSpec(Map("akka.loglevel" -> "INFO")) {
|
|||
lastSender must be === actor
|
||||
actor ! me
|
||||
expectMsg("reply")
|
||||
lastSender must be === system.actorFor("/user")
|
||||
lastSender.path.elements.mkString("/", "/", "") must be === "/user"
|
||||
expectMsg("reply")
|
||||
lastSender must be === system.actorFor("/user")
|
||||
lastSender.path.elements.mkString("/", "/", "") must be === "/user"
|
||||
}
|
||||
|
||||
"using ActorDSL outside of akka.actor package" in {
|
||||
|
|
|
|||
|
|
@ -4,17 +4,15 @@
|
|||
package docs.actor
|
||||
|
||||
import language.postfixOps
|
||||
|
||||
//#imports
|
||||
import scala.concurrent.{ Promise, Future, Await }
|
||||
import scala.concurrent.duration._
|
||||
import akka.actor.{ ActorContext, TypedActor, TypedProps }
|
||||
|
||||
//#imports
|
||||
|
||||
import org.scalatest.{ BeforeAndAfterAll, WordSpec }
|
||||
import org.scalatest.matchers.MustMatchers
|
||||
import akka.testkit._
|
||||
//#typed-actor-impl
|
||||
import java.lang.String.{ valueOf ⇒ println } //Mr funny man avoids printing to stdout AND keeping docs alright
|
||||
import akka.actor.ActorRef
|
||||
|
||||
//#typed-actor-iface
|
||||
trait Squarer {
|
||||
|
|
@ -46,8 +44,6 @@ class SquarerImpl(val name: String) extends Squarer {
|
|||
def squareNow(i: Int): Int = i * i
|
||||
//#typed-actor-impl-methods
|
||||
}
|
||||
//#typed-actor-impl
|
||||
import java.lang.String.{ valueOf ⇒ println } //Mr funny man avoids printing to stdout AND keeping docs alright
|
||||
//#typed-actor-supercharge
|
||||
trait Foo {
|
||||
def doFoo(times: Int): Unit = println("doFoo(" + times + ")")
|
||||
|
|
@ -145,12 +141,13 @@ class TypedActorDocSpec extends AkkaSpec(Map("akka.loglevel" -> "INFO")) {
|
|||
}
|
||||
|
||||
"proxy any ActorRef" in {
|
||||
val actorRefToRemoteActor: ActorRef = system.deadLetters
|
||||
//#typed-actor-remote
|
||||
val typedActor: Foo with Bar =
|
||||
TypedActor(system).
|
||||
typedActorOf(
|
||||
TypedProps[FooBar],
|
||||
system.actorFor("akka://SomeSystem@somehost:2552/user/some/foobar"))
|
||||
actorRefToRemoteActor)
|
||||
//Use "typedActor" as a FooBar
|
||||
//#typed-actor-remote
|
||||
}
|
||||
|
|
|
|||
|
|
@ -10,13 +10,15 @@ import akka.routing.RoundRobinRouter
|
|||
import akka.testkit._
|
||||
import com.typesafe.config.ConfigFactory
|
||||
import scala.concurrent.duration._
|
||||
import akka.actor.ActorPath
|
||||
|
||||
object RouterViaProgramDocSpec {
|
||||
case class Message1(nbr: Int)
|
||||
case class Reply1(name: String, m: Message1)
|
||||
|
||||
class ExampleActor1 extends Actor {
|
||||
def receive = {
|
||||
case m @ Message1(nbr) ⇒ sender ! ((self, m))
|
||||
case m @ Message1(nbr) ⇒ sender ! Reply1(self.path.name, m)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -43,9 +45,9 @@ class RouterViaProgramDocSpec extends AkkaSpec with ImplicitSender {
|
|||
1 to 6 foreach { i ⇒ router ! Message1(i) }
|
||||
val received = receiveN(6, 5.seconds.dilated)
|
||||
1 to 6 foreach { i ⇒
|
||||
val expectedActor = system.actorFor(routees((i - 1) % routees.length))
|
||||
val expectedName = (routees((i - 1) % routees.length)).split("/").last
|
||||
val expectedMsg = Message1(i)
|
||||
received must contain[AnyRef]((expectedActor, expectedMsg))
|
||||
received must contain[AnyRef](Reply1(expectedName, expectedMsg))
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -157,7 +157,7 @@ package docs.serialization {
|
|||
|
||||
"demonstrate serialization of ActorRefs" in {
|
||||
val theActorRef: ActorRef = system.deadLetters
|
||||
val theActorSystem: ActorSystem = system
|
||||
val extendedSystem: ExtendedActorSystem = system.asInstanceOf[ExtendedActorSystem]
|
||||
|
||||
//#actorref-serializer
|
||||
// Serialize
|
||||
|
|
@ -168,7 +168,7 @@ package docs.serialization {
|
|||
|
||||
// Deserialize
|
||||
// (beneath fromBinary)
|
||||
val deserializedActorRef = theActorSystem actorFor identifier
|
||||
val deserializedActorRef = extendedSystem.provider.resolveActorRef(identifier)
|
||||
// Then just use the ActorRef
|
||||
//#actorref-serializer
|
||||
|
||||
|
|
@ -182,7 +182,7 @@ package docs.serialization {
|
|||
}
|
||||
|
||||
def serializeTo(ref: ActorRef, remote: Address): String =
|
||||
ref.path.toSerializationFormatWithAddress(ExternalAddress(theActorSystem).addressFor(remote))
|
||||
ref.path.toSerializationFormatWithAddress(ExternalAddress(extendedSystem).addressFor(remote))
|
||||
//#external-address
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -208,10 +208,13 @@ class TestkitDocSpec extends AkkaSpec with DefaultTimeout with ImplicitSender {
|
|||
|
||||
"demonstrate probe watch" in {
|
||||
import akka.testkit.TestProbe
|
||||
val target = system.actorFor("/buh")
|
||||
val target = system.actorOf(Props(new Actor {
|
||||
def receive = Actor.emptyBehavior
|
||||
}))
|
||||
//#test-probe-watch
|
||||
val probe = TestProbe()
|
||||
probe watch target
|
||||
target ! PoisonPill
|
||||
probe.expectMsgType[Terminated].actor must be(target)
|
||||
//#test-probe-watch
|
||||
}
|
||||
|
|
|
|||
|
|
@ -69,7 +69,7 @@ Types of Remote Interaction
|
|||
|
||||
Akka has two ways of using remoting:
|
||||
|
||||
* Lookup : used to look up an actor on a remote node with ``actorFor(path)``
|
||||
* Lookup : used to look up an actor on a remote node with ``actorSelection(path)``
|
||||
* Creation : used to create an actor on a remote node with ``actorOf(Props(...), actorName)``
|
||||
|
||||
In the next sections the two alternatives are described in detail.
|
||||
|
|
@ -77,17 +77,24 @@ In the next sections the two alternatives are described in detail.
|
|||
Looking up Remote Actors
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
``actorFor(path)`` will obtain an ``ActorRef`` to an Actor on a remote node, e.g.::
|
||||
``actorSelection(path)`` will obtain an ``ActorSelection`` to an Actor on a remote node, e.g.::
|
||||
|
||||
val actor = context.actorFor("akka.tcp://actorSystemName@10.0.0.1:2552/user/actorName")
|
||||
val selection =
|
||||
context.actorSelection("akka.tcp://actorSystemName@10.0.0.1:2552/user/actorName")
|
||||
|
||||
As you can see from the example above the following pattern is used to find an ``ActorRef`` on a remote node::
|
||||
As you can see from the example above the following pattern is used to find an actor on a remote node::
|
||||
|
||||
akka.<protocol>://<actor system>@<hostname>:<port>/<actor path>
|
||||
|
||||
Once you obtained a reference to the actor you can interact with it they same way you would with a local actor, e.g.::
|
||||
Once you obtained a selection to the actor you can interact with it they same way you would with a local actor, e.g.::
|
||||
|
||||
actor ! "Pretty awesome feature"
|
||||
selection ! "Pretty awesome feature"
|
||||
|
||||
To acquire an :class:`ActorRef` for an :class:`ActorSelection` you need to
|
||||
send a message to the selection and use the ``sender`` reference of the reply from
|
||||
the actor. There is a built-in ``Identify`` message that all Actors will understand
|
||||
and automatically reply to with a ``ActorIdentity`` message containing the
|
||||
:class:`ActorRef`.
|
||||
|
||||
.. note::
|
||||
|
||||
|
|
@ -271,9 +278,9 @@ and it is created from an actor system using the aforementioned client’s confi
|
|||
.. includecode:: ../../../akka-samples/akka-sample-remote/src/main/scala/sample/remote/calculator/LookupApplication.scala
|
||||
:include: setup
|
||||
|
||||
Requests which come in via ``doSomething`` will be sent to the client actor
|
||||
along with the reference which was looked up earlier. Observe how the actor
|
||||
system name using in ``actorFor`` matches the remote system’s name, as do IP
|
||||
Requests which come in via ``doSomething`` will be sent to the client actor,
|
||||
which will use the actor reference that was identified earlier. Observe how the actor
|
||||
system name using in ``actorSelection`` matches the remote system’s name, as do IP
|
||||
and port number. Top-level actors are always created below the ``"/user"``
|
||||
guardian, which supervises them.
|
||||
|
||||
|
|
|
|||
|
|
@ -204,7 +204,7 @@ Proxying
|
|||
--------
|
||||
|
||||
You can use the ``typedActorOf`` that takes a TypedProps and an ActorRef to proxy the given ActorRef as a TypedActor.
|
||||
This is usable if you want to communicate remotely with TypedActors on other machines, just look them up with ``actorFor`` and pass the ``ActorRef`` to ``typedActorOf``.
|
||||
This is usable if you want to communicate remotely with TypedActors on other machines, just pass the ``ActorRef`` to ``typedActorOf``.
|
||||
|
||||
.. note::
|
||||
|
||||
|
|
@ -213,7 +213,7 @@ This is usable if you want to communicate remotely with TypedActors on other mac
|
|||
Lookup & Remoting
|
||||
-----------------
|
||||
|
||||
Since ``TypedActors`` are backed by ``Akka Actors``, you can use ``actorFor`` together with ``typedActorOf`` to proxy ``ActorRefs`` potentially residing on remote nodes.
|
||||
Since ``TypedActors`` are backed by ``Akka Actors``, you can use ``typedActorOf`` to proxy ``ActorRefs`` potentially residing on remote nodes.
|
||||
|
||||
.. includecode:: code/docs/actor/TypedActorDocSpec.scala#typed-actor-remote
|
||||
|
||||
|
|
|
|||
|
|
@ -516,10 +516,10 @@ in case classes with proper type information. But one particular useful feature
|
|||
of Akka actors is that they have a stable identity by which they can be found,
|
||||
a unique name. This name is represented as a :class:`String` and naturally does
|
||||
not bear any type information concerning the actor’s channels. Thus, when
|
||||
looking up an actor with ``system.actorFor(...)`` you will only get an untyped
|
||||
:class:`ActorRef` and not a channel reference. This :class:`ActorRef` can of
|
||||
course manually be wrapped in a channel reference bearing the desired channels,
|
||||
but this is not a type-safe operation.
|
||||
looking up an actor with ``system.actorSelection(...)`` followed by an ``Identify``
|
||||
request you will only get an untyped :class:`ActorRef` and not a channel reference.
|
||||
This :class:`ActorRef` can of course manually be wrapped in a channel reference
|
||||
bearing the desired channels, but this is not a type-safe operation.
|
||||
|
||||
The solution in this case must be a runtime check. There is an operation to
|
||||
“narrow” an :class:`ActorRef` to a channel reference of given type, which
|
||||
|
|
|
|||
|
|
@ -60,7 +60,8 @@ trait DurableMessageSerialization { this: DurableMessageQueue ⇒
|
|||
*/
|
||||
def deserialize(bytes: Array[Byte]): Envelope = {
|
||||
|
||||
def deserializeActorRef(refProtocol: ActorRefProtocol): ActorRef = system.actorFor(refProtocol.getPath)
|
||||
def deserializeActorRef(refProtocol: ActorRefProtocol): ActorRef =
|
||||
system.provider.resolveActorRef(refProtocol.getPath)
|
||||
|
||||
val durableMessage = RemoteMessageProtocol.parseFrom(bytes)
|
||||
val message = MessageSerializer.deserialize(system, durableMessage.getMessage)
|
||||
|
|
|
|||
|
|
@ -354,7 +354,7 @@ abstract class MultiNodeSpec(val myself: RoleName, _system: ActorSystem, _roles:
|
|||
* return that as an ActorPath for easy composition:
|
||||
*
|
||||
* {{{
|
||||
* val serviceA = system.actorFor(node("master") / "user" / "serviceA")
|
||||
* val serviceA = system.actorSelection(node("master") / "user" / "serviceA")
|
||||
* }}}
|
||||
*/
|
||||
def node(role: RoleName): ActorPath = RootActorPath(testConductor.getAddressFor(role).await)
|
||||
|
|
|
|||
|
|
@ -9,6 +9,8 @@ import akka.actor.Props
|
|||
import akka.pattern.ask
|
||||
import testkit.{ STMultiNodeSpec, MultiNodeConfig, MultiNodeSpec }
|
||||
import akka.testkit._
|
||||
import akka.actor.Identify
|
||||
import akka.actor.ActorIdentity
|
||||
|
||||
object LookupRemoteActorMultiJvmSpec extends MultiNodeConfig {
|
||||
|
||||
|
|
@ -41,7 +43,10 @@ class LookupRemoteActorSpec extends MultiNodeSpec(LookupRemoteActorMultiJvmSpec)
|
|||
"Remoting" must {
|
||||
"lookup remote actor" taggedAs LongRunningTest in {
|
||||
runOn(slave) {
|
||||
val hello = system.actorFor(node(master) / "user" / "service-hello")
|
||||
val hello = {
|
||||
system.actorSelection(node(master) / "user" / "service-hello") ! Identify("id1")
|
||||
expectMsgType[ActorIdentity].ref.get
|
||||
}
|
||||
hello.isInstanceOf[RemoteActorRef] must be(true)
|
||||
val masterAddress = testConductor.getAddressFor(master).await
|
||||
(hello ? "identify").await.asInstanceOf[ActorRef].path.address must equal(masterAddress)
|
||||
|
|
|
|||
|
|
@ -4,7 +4,6 @@
|
|||
package akka.remote.testconductor
|
||||
|
||||
import language.postfixOps
|
||||
|
||||
import com.typesafe.config.ConfigFactory
|
||||
import akka.actor.Props
|
||||
import akka.actor.Actor
|
||||
|
|
@ -17,6 +16,8 @@ import java.net.InetSocketAddress
|
|||
import java.net.InetAddress
|
||||
import akka.remote.testkit.{ STMultiNodeSpec, MultiNodeSpec, MultiNodeConfig }
|
||||
import akka.remote.transport.ThrottlerTransportAdapter.Direction
|
||||
import akka.actor.Identify
|
||||
import akka.actor.ActorIdentity
|
||||
|
||||
object TestConductorMultiJvmSpec extends MultiNodeConfig {
|
||||
commonConfig(debugConfig(on = false))
|
||||
|
|
@ -36,7 +37,10 @@ class TestConductorSpec extends MultiNodeSpec(TestConductorMultiJvmSpec) with ST
|
|||
|
||||
def initialParticipants = 2
|
||||
|
||||
lazy val echo = system.actorFor(node(master) / "user" / "echo")
|
||||
lazy val echo = {
|
||||
system.actorSelection(node(master) / "user" / "echo") ! Identify(None)
|
||||
expectMsgType[ActorIdentity].ref.get
|
||||
}
|
||||
|
||||
"A TestConductor" must {
|
||||
|
||||
|
|
|
|||
|
|
@ -58,11 +58,7 @@ private[remote] class DefaultMessageDispatcher(private val system: ExtendedActor
|
|||
if (UntrustedMode) log.debug("dropping daemon message in untrusted mode")
|
||||
else {
|
||||
if (LogReceive) log.debug("received daemon message {}", msgLog)
|
||||
payload match {
|
||||
case m @ (_: DaemonMsg | _: Terminated) ⇒
|
||||
remoteDaemon ! m
|
||||
case x ⇒ log.debug("remoteDaemon received illegal message {} from {}", x, sender)
|
||||
}
|
||||
remoteDaemon ! payload
|
||||
}
|
||||
|
||||
case l @ (_: LocalRef | _: RepointableRef) if l.isLocal ⇒
|
||||
|
|
|
|||
|
|
@ -28,9 +28,8 @@ private[akka] object RemoteActorRefProvider {
|
|||
case object WaitTransportShutdown extends TerminatorState
|
||||
case object Finished extends TerminatorState
|
||||
|
||||
private class RemotingTerminator extends Actor with FSM[TerminatorState, Option[Internals]] {
|
||||
private class RemotingTerminator(systemGuardian: ActorRef) extends Actor with FSM[TerminatorState, Option[Internals]] {
|
||||
import context.dispatcher
|
||||
val systemGuardian = context.actorFor("/system")
|
||||
|
||||
startWith(Uninitialized, None)
|
||||
|
||||
|
|
@ -79,10 +78,10 @@ private[akka] object RemoteActorRefProvider {
|
|||
case _ ⇒ super.!(message)(sender)
|
||||
}
|
||||
|
||||
override def specialHandle(msg: Any): Boolean = msg match {
|
||||
override def specialHandle(msg: Any, sender: ActorRef): Boolean = msg match {
|
||||
// unwrap again in case the original message was DeadLetter(EndpointManager.Send(m))
|
||||
case EndpointManager.Send(m, _, _) ⇒ super.specialHandle(m)
|
||||
case _ ⇒ super.specialHandle(msg)
|
||||
case EndpointManager.Send(m, _, _) ⇒ super.specialHandle(m, sender)
|
||||
case _ ⇒ super.specialHandle(msg, sender)
|
||||
}
|
||||
|
||||
@throws(classOf[java.io.ObjectStreamException])
|
||||
|
|
@ -148,7 +147,7 @@ private[akka] class RemoteActorRefProvider(
|
|||
def init(system: ActorSystemImpl): Unit = {
|
||||
local.init(system)
|
||||
|
||||
remotingTerminator = system.systemActorOf(Props[RemotingTerminator], "remoting-terminator")
|
||||
remotingTerminator = system.systemActorOf(Props(new RemotingTerminator(local.systemGuardian)), "remoting-terminator")
|
||||
|
||||
val internals = Internals(
|
||||
remoteDaemon = {
|
||||
|
|
@ -244,7 +243,7 @@ private[akka] class RemoteActorRefProvider(
|
|||
new RemoteActorRef(transport, localAddress, rpath, supervisor, Some(props), Some(d))
|
||||
} catch {
|
||||
case NonFatal(e) ⇒
|
||||
log.error(e, "Error while looking up address {}", addr)
|
||||
log.error(e, "Error while looking up address [{}]", addr)
|
||||
new EmptyLocalActorRef(this, path, eventStream)
|
||||
}
|
||||
}
|
||||
|
|
@ -254,6 +253,7 @@ private[akka] class RemoteActorRefProvider(
|
|||
}
|
||||
}
|
||||
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(path: ActorPath): InternalActorRef = {
|
||||
if (hasAddress(path.address)) actorFor(rootGuardian, path.elements)
|
||||
else try {
|
||||
|
|
@ -261,11 +261,12 @@ private[akka] class RemoteActorRefProvider(
|
|||
path, Nobody, props = None, deploy = None)
|
||||
} catch {
|
||||
case NonFatal(e) ⇒
|
||||
log.error(e, "Error while looking up address {}", path.address)
|
||||
log.error(e, "Error while looking up address [{}]", path.address)
|
||||
new EmptyLocalActorRef(this, path, eventStream)
|
||||
}
|
||||
}
|
||||
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(ref: InternalActorRef, path: String): InternalActorRef = path match {
|
||||
case ActorPathExtractor(address, elems) ⇒
|
||||
if (hasAddress(address)) actorFor(rootGuardian, elems)
|
||||
|
|
@ -276,40 +277,81 @@ private[akka] class RemoteActorRefProvider(
|
|||
rootPath, Nobody, props = None, deploy = None)
|
||||
} catch {
|
||||
case NonFatal(e) ⇒
|
||||
log.error(e, "Error while looking up address {}", rootPath.address)
|
||||
log.error(e, "Error while looking up address [{}]", rootPath.address)
|
||||
new EmptyLocalActorRef(this, rootPath, eventStream)
|
||||
}
|
||||
}
|
||||
case _ ⇒ local.actorFor(ref, path)
|
||||
}
|
||||
|
||||
@deprecated("use actorSelection instead of actorFor", "2.2")
|
||||
def actorFor(ref: InternalActorRef, path: Iterable[String]): InternalActorRef =
|
||||
local.actorFor(ref, path)
|
||||
|
||||
def rootGuardianAt(address: Address): ActorRef =
|
||||
if (hasAddress(address)) rootGuardian
|
||||
else new RemoteActorRef(transport, transport.localAddressForRemote(address),
|
||||
RootActorPath(address), Nobody, props = None, deploy = None)
|
||||
|
||||
/**
|
||||
* INTERNAL API
|
||||
* Called in deserialization of incoming remote messages. In this case the correct local address is known, therefore
|
||||
* this method is faster than the actorFor above.
|
||||
* Called in deserialization of incoming remote messages where the correct local address is known.
|
||||
*/
|
||||
def actorForWithLocalAddress(ref: InternalActorRef, path: String, localAddress: Address): InternalActorRef = {
|
||||
private[akka] def resolveActorRefWithLocalAddress(path: String, localAddress: Address): InternalActorRef = {
|
||||
path match {
|
||||
case ActorPathExtractor(address, elems) ⇒
|
||||
if (hasAddress(address)) actorFor(rootGuardian, elems)
|
||||
else new RemoteActorRef(transport, localAddress,
|
||||
new RootActorPath(address) / elems, Nobody, props = None, deploy = None)
|
||||
if (hasAddress(address)) local.resolveActorRef(rootGuardian, elems)
|
||||
else
|
||||
new RemoteActorRef(transport, localAddress, RootActorPath(address) / elems,
|
||||
Nobody, props = None, deploy = None)
|
||||
case _ ⇒
|
||||
local.actorFor(ref, path)
|
||||
log.debug("resolve of unknown path [{}] failed", path)
|
||||
deadLetters
|
||||
}
|
||||
}
|
||||
|
||||
def actorFor(ref: InternalActorRef, path: Iterable[String]): InternalActorRef =
|
||||
local.actorFor(ref, path)
|
||||
def resolveActorRef(path: String): ActorRef = path match {
|
||||
case ActorPathExtractor(address, elems) ⇒
|
||||
if (hasAddress(address)) local.resolveActorRef(rootGuardian, elems)
|
||||
else {
|
||||
val rootPath = RootActorPath(address) / elems
|
||||
try {
|
||||
new RemoteActorRef(transport, transport.localAddressForRemote(address),
|
||||
rootPath, Nobody, props = None, deploy = None)
|
||||
} catch {
|
||||
case NonFatal(e) ⇒
|
||||
log.error(e, "Error while resolving address [{}]", rootPath.address)
|
||||
new EmptyLocalActorRef(this, rootPath, eventStream)
|
||||
}
|
||||
}
|
||||
case _ ⇒
|
||||
log.debug("resolve of unknown path [{}] failed", path)
|
||||
deadLetters
|
||||
}
|
||||
|
||||
def resolveActorRef(path: ActorPath): ActorRef = {
|
||||
if (hasAddress(path.address)) local.resolveActorRef(rootGuardian, path.elements)
|
||||
else try {
|
||||
new RemoteActorRef(transport, transport.localAddressForRemote(path.address),
|
||||
path, Nobody, props = None, deploy = None)
|
||||
} catch {
|
||||
case NonFatal(e) ⇒
|
||||
log.error(e, "Error while resolving address [{}]", path.address)
|
||||
new EmptyLocalActorRef(this, path, eventStream)
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Using (checking out) actor on a specific node.
|
||||
*/
|
||||
def useActorOnNode(path: ActorPath, props: Props, deploy: Deploy, supervisor: ActorRef): Unit = {
|
||||
log.debug("[{}] Instantiating Remote Actor [{}]", rootPath, path)
|
||||
def useActorOnNode(ref: ActorRef, props: Props, deploy: Deploy, supervisor: ActorRef): Unit = {
|
||||
log.debug("[{}] Instantiating Remote Actor [{}]", rootPath, ref.path)
|
||||
|
||||
// we don’t wait for the ACK, because the remote end will process this command before any other message to the new actor
|
||||
actorFor(RootActorPath(path.address) / "remote") ! DaemonMsgCreate(props, deploy, path.toSerializationFormat, supervisor)
|
||||
// actorSelection can't be used here because then it is not guaranteed that the actor is created
|
||||
// before someone can send messages to it
|
||||
resolveActorRef(RootActorPath(ref.path.address) / "remote") !
|
||||
DaemonMsgCreate(props, deploy, ref.path.toSerializationFormat, supervisor)
|
||||
}
|
||||
|
||||
def getExternalAddressFor(addr: Address): Option[Address] = {
|
||||
|
|
@ -374,7 +416,7 @@ private[akka] class RemoteActorRef private[akka] (
|
|||
override def provider: RemoteActorRefProvider = remote.provider
|
||||
|
||||
def start(): Unit =
|
||||
if (props.isDefined && deploy.isDefined) remote.provider.useActorOnNode(path, props.get, deploy.get, getParent)
|
||||
if (props.isDefined && deploy.isDefined) remote.provider.useActorOnNode(this, props.get, deploy.get, getParent)
|
||||
|
||||
def suspend(): Unit = sendSystemMessage(Suspend())
|
||||
|
||||
|
|
|
|||
|
|
@ -13,6 +13,11 @@ import akka.actor.ActorRefWithCell
|
|||
import akka.actor.ActorRefScope
|
||||
import akka.util.Switch
|
||||
import akka.actor.RootActorPath
|
||||
import akka.actor.SelectParent
|
||||
import akka.actor.SelectChildName
|
||||
import akka.actor.SelectChildPattern
|
||||
import akka.actor.Identify
|
||||
import akka.actor.ActorIdentity
|
||||
|
||||
/**
|
||||
* INTERNAL API
|
||||
|
|
@ -106,6 +111,21 @@ private[akka] class RemoteSystemDaemon(
|
|||
}
|
||||
}
|
||||
|
||||
case SelectParent(m) ⇒ getParent.tell(m, sender)
|
||||
|
||||
case s @ SelectChildName(name, m) ⇒
|
||||
getChild(s.allChildNames.iterator) match {
|
||||
case Nobody ⇒
|
||||
s.identifyRequest foreach { x ⇒ sender ! ActorIdentity(x.messageId, None) }
|
||||
case child ⇒
|
||||
child.tell(s.wrappedMessage, sender)
|
||||
}
|
||||
|
||||
case SelectChildPattern(p, m) ⇒
|
||||
log.error("SelectChildPattern not allowed in actorSelection of remote deployed actors")
|
||||
|
||||
case Identify(messageId) ⇒ sender ! ActorIdentity(messageId, Some(this))
|
||||
|
||||
case Terminated(child: ActorRefWithCell) if child.asInstanceOf[ActorRefScope].isLocal ⇒
|
||||
terminating.locked {
|
||||
removeChild(child.path.elements.drop(1).mkString("/"))
|
||||
|
|
|
|||
|
|
@ -6,7 +6,7 @@ package akka.remote.serialization
|
|||
|
||||
import akka.serialization.{ Serializer, Serialization }
|
||||
import com.google.protobuf.Message
|
||||
import akka.actor.{ ActorSystem, ActorRef }
|
||||
import akka.actor.{ ActorSystem, ActorRef, ExtendedActorSystem }
|
||||
import akka.remote.RemoteProtocol.ActorRefProtocol
|
||||
|
||||
object ProtobufSerializer {
|
||||
|
|
@ -24,8 +24,8 @@ object ProtobufSerializer {
|
|||
* from Akka's protobuf representation in the supplied
|
||||
* [[akka.actor.ActorSystem]].
|
||||
*/
|
||||
def deserializeActorRef(system: ActorSystem, refProtocol: ActorRefProtocol): ActorRef =
|
||||
system.actorFor(refProtocol.getPath)
|
||||
def deserializeActorRef(system: ExtendedActorSystem, refProtocol: ActorRefProtocol): ActorRef =
|
||||
system.provider.resolveActorRef(refProtocol.getPath)
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -140,6 +140,7 @@ abstract class ActorTransportAdapter(wrappedTransport: Transport, system: ActorS
|
|||
// Write once variable initialized when Listen is called.
|
||||
@volatile protected var manager: ActorRef = _
|
||||
|
||||
// FIXME #3074 how to replace actorFor here?
|
||||
private def registerManager(): Future[ActorRef] =
|
||||
(system.actorFor("/system/transports") ? RegisterTransportActor(managerProps, managerName)).mapTo[ActorRef]
|
||||
|
||||
|
|
|
|||
|
|
@ -144,11 +144,11 @@ private[remote] object AkkaPduProtobufCodec extends AkkaPduCodec {
|
|||
localAddress: Address): Message = {
|
||||
val msgPdu = RemoteMessageProtocol.parseFrom(raw.toArray)
|
||||
Message(
|
||||
recipient = provider.actorForWithLocalAddress(provider.rootGuardian, msgPdu.getRecipient.getPath, localAddress),
|
||||
recipient = provider.resolveActorRefWithLocalAddress(msgPdu.getRecipient.getPath, localAddress),
|
||||
recipientAddress = AddressFromURIString(msgPdu.getRecipient.getPath),
|
||||
serializedMessage = msgPdu.getMessage,
|
||||
senderOption = if (!msgPdu.hasSender) None
|
||||
else Some(provider.actorForWithLocalAddress(provider.rootGuardian, msgPdu.getSender.getPath, localAddress)))
|
||||
else Some(provider.resolveActorRefWithLocalAddress(msgPdu.getSender.getPath, localAddress)))
|
||||
}
|
||||
|
||||
private def decodeControlPdu(controlPdu: RemoteControlProtocol): AkkaPdu = {
|
||||
|
|
|
|||
|
|
@ -49,4 +49,10 @@ akka {
|
|||
expectMsg(60.seconds, path)
|
||||
}
|
||||
|
||||
"receive ActorIdentity(None) when identified node is unknown host" in {
|
||||
val path = RootActorPath(Address("akka.tcp", system.name, "unknownhost", 2552)) / "user" / "subject"
|
||||
system.actorSelection(path) ! Identify(path)
|
||||
expectMsg(60.seconds, ActorIdentity(path, None))
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -15,13 +15,18 @@ import scala.concurrent.Future
|
|||
import scala.concurrent.duration._
|
||||
|
||||
object RemotingSpec {
|
||||
|
||||
case class ActorForReq(s: String)
|
||||
case class ActorSelReq(s: String)
|
||||
|
||||
class Echo1 extends Actor {
|
||||
var target: ActorRef = context.system.deadLetters
|
||||
|
||||
def receive = {
|
||||
case (p: Props, n: String) ⇒ sender ! context.actorOf(Props[Echo1], n)
|
||||
case ex: Exception ⇒ throw ex
|
||||
case s: String ⇒ sender ! context.actorFor(s)
|
||||
case ActorForReq(s) ⇒ sender ! context.actorFor(s)
|
||||
case ActorSelReq(s) ⇒ sender ! context.actorSelection(s)
|
||||
case x ⇒ target = sender; sender ! x
|
||||
}
|
||||
|
||||
|
|
@ -110,8 +115,10 @@ object RemotingSpec {
|
|||
|
||||
actor.deployment {
|
||||
/blub.remote = "akka.test://remote-sys@localhost:12346"
|
||||
/looker/child.remote = "akka.test://remote-sys@localhost:12346"
|
||||
/looker/child/grandchild.remote = "akka.test://RemotingSpec@localhost:12345"
|
||||
/looker1/child.remote = "akka.test://remote-sys@localhost:12346"
|
||||
/looker1/child/grandchild.remote = "akka.test://RemotingSpec@localhost:12345"
|
||||
/looker2/child.remote = "akka.test://remote-sys@localhost:12346"
|
||||
/looker2/child/grandchild.remote = "akka.test://RemotingSpec@localhost:12345"
|
||||
}
|
||||
}
|
||||
""")
|
||||
|
|
@ -234,8 +241,8 @@ class RemotingSpec extends AkkaSpec(RemotingSpec.cfg) with ImplicitSender with D
|
|||
EventFilter.warning(pattern = "received dead letter.*")))
|
||||
sys.actorOf(Props[Echo2], name = "echo")
|
||||
}
|
||||
val moreRefs = moreSystems map (sys ⇒ system.actorFor(RootActorPath(addr(sys, "tcp")) / "user" / "echo"))
|
||||
val aliveEcho = system.actorFor(RootActorPath(addr(remoteSystem, "tcp")) / "user" / "echo")
|
||||
val moreRefs = moreSystems map (sys ⇒ system.actorSelection(RootActorPath(addr(sys, "tcp")) / "user" / "echo"))
|
||||
val aliveEcho = system.actorSelection(RootActorPath(addr(remoteSystem, "tcp")) / "user" / "echo")
|
||||
val n = 100
|
||||
|
||||
// first everything is up and running
|
||||
|
|
@ -302,15 +309,21 @@ class RemotingSpec extends AkkaSpec(RemotingSpec.cfg) with ImplicitSender with D
|
|||
|
||||
system.actorFor("akka.test://remote-sys@localhost:12346/user/otherEcho1") ! 76
|
||||
expectMsg(76)
|
||||
|
||||
remoteSystem.actorSelection("/user/otherEcho1") ! 77
|
||||
expectMsg(77)
|
||||
|
||||
system.actorSelection("akka.test://remote-sys@localhost:12346/user/otherEcho1") ! 78
|
||||
expectMsg(78)
|
||||
}
|
||||
|
||||
"look-up actors across node boundaries" in {
|
||||
val l = system.actorOf(Props(new Actor {
|
||||
def receive = {
|
||||
case (p: Props, n: String) ⇒ sender ! context.actorOf(p, n)
|
||||
case s: String ⇒ sender ! context.actorFor(s)
|
||||
case ActorForReq(s) ⇒ sender ! context.actorFor(s)
|
||||
}
|
||||
}), "looker")
|
||||
}), "looker1")
|
||||
// child is configured to be deployed on remote-sys (remoteSystem)
|
||||
l ! ((Props[Echo1], "child"))
|
||||
val child = expectMsgType[ActorRef]
|
||||
|
|
@ -320,16 +333,16 @@ class RemotingSpec extends AkkaSpec(RemotingSpec.cfg) with ImplicitSender with D
|
|||
grandchild.asInstanceOf[ActorRefScope].isLocal must be(true)
|
||||
grandchild ! 43
|
||||
expectMsg(43)
|
||||
val myref = system.actorFor(system / "looker" / "child" / "grandchild")
|
||||
val myref = system.actorFor(system / "looker1" / "child" / "grandchild")
|
||||
myref.isInstanceOf[RemoteActorRef] must be(true)
|
||||
myref ! 44
|
||||
expectMsg(44)
|
||||
lastSender must be(grandchild)
|
||||
lastSender must be theSameInstanceAs grandchild
|
||||
child.asInstanceOf[RemoteActorRef].getParent must be(l)
|
||||
system.actorFor("/user/looker/child") must be theSameInstanceAs child
|
||||
Await.result(l ? "child/..", timeout.duration).asInstanceOf[AnyRef] must be theSameInstanceAs l
|
||||
Await.result(system.actorFor(system / "looker" / "child") ? "..", timeout.duration).asInstanceOf[AnyRef] must be theSameInstanceAs l
|
||||
system.actorFor("/user/looker1/child") must be theSameInstanceAs child
|
||||
Await.result(l ? ActorForReq("child/.."), timeout.duration).asInstanceOf[AnyRef] must be theSameInstanceAs l
|
||||
Await.result(system.actorFor(system / "looker1" / "child") ? ActorForReq(".."), timeout.duration).asInstanceOf[AnyRef] must be theSameInstanceAs l
|
||||
|
||||
watch(child)
|
||||
child ! PoisonPill
|
||||
|
|
@ -343,9 +356,66 @@ class RemotingSpec extends AkkaSpec(RemotingSpec.cfg) with ImplicitSender with D
|
|||
child2.path.uid must not be (child.path.uid)
|
||||
child ! 46
|
||||
expectNoMsg(1.second)
|
||||
system.actorFor(system / "looker" / "child") ! 47
|
||||
system.actorFor(system / "looker1" / "child") ! 47
|
||||
expectMsg(47)
|
||||
}
|
||||
|
||||
"select actors across node boundaries" in {
|
||||
val l = system.actorOf(Props(new Actor {
|
||||
def receive = {
|
||||
case (p: Props, n: String) ⇒ sender ! context.actorOf(p, n)
|
||||
case ActorSelReq(s) ⇒ sender ! context.actorSelection(s)
|
||||
}
|
||||
}), "looker2")
|
||||
// child is configured to be deployed on remoteSystem
|
||||
l ! (Props[Echo1], "child")
|
||||
val child = expectMsgType[ActorRef]
|
||||
// grandchild is configured to be deployed on RemotingSpec (system)
|
||||
child ! (Props[Echo1], "grandchild")
|
||||
val grandchild = expectMsgType[ActorRef]
|
||||
grandchild.asInstanceOf[ActorRefScope].isLocal must be(true)
|
||||
grandchild ! 53
|
||||
expectMsg(53)
|
||||
val mysel = system.actorSelection(system / "looker2" / "child" / "grandchild")
|
||||
mysel ! 54
|
||||
expectMsg(54)
|
||||
lastSender must be(grandchild)
|
||||
lastSender must be theSameInstanceAs grandchild
|
||||
mysel ! Identify(mysel)
|
||||
val grandchild2 = expectMsgType[ActorIdentity].ref
|
||||
grandchild2 must be === Some(grandchild)
|
||||
system.actorSelection("/user/looker2/child") ! Identify(None)
|
||||
expectMsgType[ActorIdentity].ref must be === Some(child)
|
||||
l ! ActorSelReq("child/..")
|
||||
expectMsgType[ActorSelection] ! Identify(None)
|
||||
expectMsgType[ActorIdentity].ref.get must be theSameInstanceAs l
|
||||
system.actorSelection(system / "looker2" / "child") ! ActorSelReq("..")
|
||||
expectMsgType[ActorSelection] ! Identify(None)
|
||||
expectMsgType[ActorIdentity].ref.get must be theSameInstanceAs l
|
||||
|
||||
child ! Identify("idReq1")
|
||||
expectMsg(ActorIdentity("idReq1", Some(child)))
|
||||
watch(child)
|
||||
child ! PoisonPill
|
||||
expectMsg("postStop")
|
||||
expectMsgType[Terminated].actor must be === child
|
||||
l ! (Props[Echo1], "child")
|
||||
val child2 = expectMsgType[ActorRef]
|
||||
child2 ! Identify("idReq2")
|
||||
expectMsg(ActorIdentity("idReq2", Some(child2)))
|
||||
system.actorSelection(child.path) ! Identify("idReq3")
|
||||
expectMsg(ActorIdentity("idReq3", Some(child2)))
|
||||
child ! Identify("idReq4")
|
||||
expectMsg(ActorIdentity("idReq4", None))
|
||||
|
||||
child2 ! 55
|
||||
expectMsg(55)
|
||||
// msg to old ActorRef (different uid) should not get through
|
||||
child2.path.uid must not be (child.path.uid)
|
||||
child ! 56
|
||||
expectNoMsg(1.second)
|
||||
system.actorSelection(system / "looker2" / "child") ! 57
|
||||
expectMsg(57)
|
||||
}
|
||||
|
||||
"not fail ask across node boundaries" in {
|
||||
|
|
@ -455,8 +525,10 @@ class RemotingSpec extends AkkaSpec(RemotingSpec.cfg) with ImplicitSender with D
|
|||
val otherGuyRemoteTest = otherGuy.path.toSerializationFormatWithAddress(addr(otherSystem, "test"))
|
||||
val remoteEchoHereSsl = system.actorFor(s"akka.ssl.tcp://remote-sys@localhost:${port(remoteSystem, "ssl.tcp")}/user/echo")
|
||||
val proxySsl = system.actorOf(Props(new Proxy(remoteEchoHereSsl, testActor)), "proxy-ssl")
|
||||
EventFilter[RemoteTransportException](start = "Error while resolving address", occurrences = 1).intercept {
|
||||
proxySsl ! otherGuy
|
||||
expectMsg(3.seconds, ("pong", otherGuyRemoteTest))
|
||||
}(otherSystem)
|
||||
} finally {
|
||||
otherSystem.shutdown()
|
||||
otherSystem.awaitTermination(5.seconds.dilated)
|
||||
|
|
|
|||
|
|
@ -139,7 +139,10 @@ abstract class Ticket1978CommunicationSpec(val cipherConfig: CipherConfig) exten
|
|||
val otherAddress = other.asInstanceOf[ExtendedActorSystem].provider.asInstanceOf[RemoteActorRefProvider].transport.defaultAddress
|
||||
|
||||
"support tell" in {
|
||||
val here = system.actorFor(otherAddress.toString + "/user/echo")
|
||||
val here = {
|
||||
system.actorSelection(otherAddress.toString + "/user/echo") ! Identify(None)
|
||||
expectMsgType[ActorIdentity].ref.get
|
||||
}
|
||||
|
||||
for (i ← 1 to 1000) here ! (("ping", i))
|
||||
for (i ← 1 to 1000) expectMsgPF(timeout.duration) { case (("pong", i), `testActor`) ⇒ true }
|
||||
|
|
@ -147,7 +150,10 @@ abstract class Ticket1978CommunicationSpec(val cipherConfig: CipherConfig) exten
|
|||
|
||||
"support ask" in {
|
||||
import system.dispatcher
|
||||
val here = system.actorFor(otherAddress.toString + "/user/echo")
|
||||
val here = {
|
||||
system.actorSelection(otherAddress.toString + "/user/echo") ! Identify(None)
|
||||
expectMsgType[ActorIdentity].ref.get
|
||||
}
|
||||
|
||||
val f = for (i ← 1 to 1000) yield here ? (("ping", i)) mapTo classTag[((String, Int), ActorRef)]
|
||||
Await.result(Future.sequence(f), timeout.duration).map(_._1._1).toSet must be(Set("pong"))
|
||||
|
|
|
|||
|
|
@ -75,7 +75,11 @@ class AkkaProtocolStressTest extends AkkaSpec(configA) with ImplicitSender with
|
|||
|
||||
val addressB = systemB.asInstanceOf[ExtendedActorSystem].provider.getDefaultAddress
|
||||
val rootB = RootActorPath(addressB)
|
||||
val here = system.actorFor(rootB / "user" / "echo")
|
||||
val here = {
|
||||
val path =
|
||||
system.actorSelection(rootB / "user" / "echo") ! Identify(None)
|
||||
expectMsgType[ActorIdentity].ref.get
|
||||
}
|
||||
|
||||
"AkkaProtocolTransport" must {
|
||||
"guarantee at-most-once delivery and message ordering despite packet loss" taggedAs TimingTest in {
|
||||
|
|
|
|||
|
|
@ -66,7 +66,10 @@ class ThrottlerTransportAdapterSpec extends AkkaSpec(configA) with ImplicitSende
|
|||
val remote = systemB.actorOf(Props[Echo], "echo")
|
||||
|
||||
val rootB = RootActorPath(systemB.asInstanceOf[ExtendedActorSystem].provider.getDefaultAddress)
|
||||
val here = system.actorFor(rootB / "user" / "echo")
|
||||
val here = {
|
||||
system.actorSelection(rootB / "user" / "echo") ! Identify(None)
|
||||
expectMsgType[ActorIdentity].ref.get
|
||||
}
|
||||
|
||||
def throttle(direction: Direction, mode: ThrottleMode): Boolean = {
|
||||
val rootBAddress = Address("akka", "systemB", "localhost", rootB.address.port.get)
|
||||
|
|
|
|||
|
|
@ -1,21 +1,16 @@
|
|||
package sample.cluster.stats.japi;
|
||||
|
||||
import scala.concurrent.Future;
|
||||
import sample.cluster.stats.japi.StatsMessages.JobFailed;
|
||||
import sample.cluster.stats.japi.StatsMessages.StatsJob;
|
||||
import akka.actor.ActorRef;
|
||||
import akka.actor.ActorSelection;
|
||||
import akka.actor.Address;
|
||||
import akka.actor.UntypedActor;
|
||||
import akka.dispatch.Recover;
|
||||
import akka.cluster.Cluster;
|
||||
import akka.cluster.ClusterEvent.CurrentClusterState;
|
||||
import akka.cluster.ClusterEvent.RoleLeaderChanged;
|
||||
import akka.event.Logging;
|
||||
import akka.event.LoggingAdapter;
|
||||
import akka.util.Timeout;
|
||||
import static akka.pattern.Patterns.ask;
|
||||
import static akka.pattern.Patterns.pipe;
|
||||
import static java.util.concurrent.TimeUnit.SECONDS;
|
||||
|
||||
|
||||
//#facade
|
||||
public class StatsFacade extends UntypedActor {
|
||||
|
|
@ -23,7 +18,7 @@ public class StatsFacade extends UntypedActor {
|
|||
LoggingAdapter log = Logging.getLogger(getContext().system(), this);
|
||||
Cluster cluster = Cluster.get(getContext().system());
|
||||
|
||||
Address currentMaster = null;
|
||||
ActorSelection currentMaster = null;
|
||||
|
||||
//subscribe to cluster changes, RoleLeaderChanged
|
||||
@Override
|
||||
|
|
@ -44,30 +39,29 @@ public class StatsFacade extends UntypedActor {
|
|||
getSelf());
|
||||
|
||||
} else if (message instanceof StatsJob) {
|
||||
StatsJob job = (StatsJob) message;
|
||||
ActorRef service = getContext().actorFor(currentMaster +
|
||||
"/user/singleton/statsService");
|
||||
Future<Object> f = ask(service, job, new Timeout(5, SECONDS)).recover(
|
||||
new Recover<Object>() {
|
||||
public Object recover(Throwable t) {
|
||||
return new JobFailed("Service unavailable, try again later");
|
||||
}
|
||||
}, getContext().dispatcher());
|
||||
pipe(f, getContext().dispatcher()).to(getSender());
|
||||
currentMaster.tell(message, getSender());
|
||||
|
||||
} else if (message instanceof CurrentClusterState) {
|
||||
CurrentClusterState state = (CurrentClusterState) message;
|
||||
currentMaster = state.getRoleLeader("compute");
|
||||
setCurrentMaster(state.getRoleLeader("compute"));
|
||||
|
||||
} else if (message instanceof RoleLeaderChanged) {
|
||||
RoleLeaderChanged leaderChanged = (RoleLeaderChanged) message;
|
||||
if (leaderChanged.role().equals("compute"))
|
||||
currentMaster = leaderChanged.getLeader();
|
||||
setCurrentMaster(leaderChanged.getLeader());
|
||||
|
||||
} else {
|
||||
unhandled(message);
|
||||
}
|
||||
}
|
||||
|
||||
void setCurrentMaster(Address address) {
|
||||
if (address == null)
|
||||
currentMaster = null;
|
||||
else
|
||||
currentMaster = getContext().actorSelection(address +
|
||||
"/user/singleton/statsService");
|
||||
}
|
||||
|
||||
}
|
||||
//#facade
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@ import sample.cluster.stats.japi.StatsMessages.StatsResult;
|
|||
import scala.concurrent.forkjoin.ThreadLocalRandom;
|
||||
import scala.concurrent.duration.Duration;
|
||||
import scala.concurrent.duration.FiniteDuration;
|
||||
import akka.actor.ActorRef;
|
||||
import akka.actor.ActorSelection;
|
||||
import akka.actor.Address;
|
||||
import akka.actor.Cancellable;
|
||||
import akka.actor.UntypedActor;
|
||||
|
|
@ -61,7 +61,7 @@ public class StatsSampleClient extends UntypedActor {
|
|||
List<Address> nodesList = new ArrayList<Address>(nodes);
|
||||
Address address = nodesList.get(ThreadLocalRandom.current().nextInt(
|
||||
nodesList.size()));
|
||||
ActorRef service = getContext().actorFor(address + servicePath);
|
||||
ActorSelection service = getContext().actorSelection(address + servicePath);
|
||||
service.tell(new StatsJob("this is the text that will be analyzed"),
|
||||
getSelf());
|
||||
|
||||
|
|
|
|||
|
|
@ -56,7 +56,7 @@ public class TransformationBackend extends UntypedActor {
|
|||
|
||||
void register(Member member) {
|
||||
if (member.hasRole("frontend"))
|
||||
getContext().actorFor(member.address() + "/user/frontend").tell(
|
||||
getContext().actorSelection(member.address() + "/user/frontend").tell(
|
||||
BACKEND_REGISTRATION, getSelf());
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -8,6 +8,7 @@ import com.typesafe.config.ConfigFactory
|
|||
import akka.actor.Actor
|
||||
import akka.actor.ActorLogging
|
||||
import akka.actor.ActorRef
|
||||
import akka.actor.ActorSelection
|
||||
import akka.actor.ActorSystem
|
||||
import akka.actor.Address
|
||||
import akka.actor.PoisonPill
|
||||
|
|
@ -21,9 +22,6 @@ import akka.cluster.MemberStatus
|
|||
import akka.contrib.pattern.ClusterSingletonManager
|
||||
import akka.routing.FromConfig
|
||||
import akka.routing.ConsistentHashingRouter.ConsistentHashableEnvelope
|
||||
import akka.pattern.ask
|
||||
import akka.pattern.pipe
|
||||
import akka.util.Timeout
|
||||
//#imports
|
||||
|
||||
//#messages
|
||||
|
|
@ -93,7 +91,7 @@ class StatsFacade extends Actor with ActorLogging {
|
|||
import context.dispatcher
|
||||
val cluster = Cluster(context.system)
|
||||
|
||||
var currentMaster: Option[Address] = None
|
||||
var currentMaster: Option[ActorSelection] = None
|
||||
|
||||
// subscribe to cluster changes, RoleLeaderChanged
|
||||
// re-subscribe when restart
|
||||
|
|
@ -104,19 +102,17 @@ class StatsFacade extends Actor with ActorLogging {
|
|||
case job: StatsJob if currentMaster.isEmpty ⇒
|
||||
sender ! JobFailed("Service unavailable, try again later")
|
||||
case job: StatsJob ⇒
|
||||
implicit val timeout = Timeout(5.seconds)
|
||||
currentMaster foreach { address ⇒
|
||||
val service = context.actorFor(RootActorPath(address) /
|
||||
"user" / "singleton" / "statsService")
|
||||
service ? job recover {
|
||||
case _ ⇒ JobFailed("Service unavailable, try again later")
|
||||
} pipeTo sender
|
||||
}
|
||||
currentMaster foreach { _.tell(job, sender) }
|
||||
case state: CurrentClusterState ⇒
|
||||
currentMaster = state.roleLeader("compute")
|
||||
setCurrentMaster(state.roleLeader("compute"))
|
||||
case RoleLeaderChanged(role, leader) ⇒
|
||||
if (role == "compute")
|
||||
currentMaster = leader
|
||||
setCurrentMaster(leader)
|
||||
}
|
||||
|
||||
def setCurrentMaster(address: Option[Address]): Unit = {
|
||||
currentMaster = address.map(a ⇒ context.actorSelection(RootActorPath(a) /
|
||||
"user" / "singleton" / "statsService"))
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -200,7 +196,7 @@ class StatsSampleClient(servicePath: String) extends Actor {
|
|||
case "tick" if nodes.nonEmpty ⇒
|
||||
// just pick any one
|
||||
val address = nodes.toIndexedSeq(ThreadLocalRandom.current.nextInt(nodes.size))
|
||||
val service = context.actorFor(RootActorPath(address) / servicePathElements)
|
||||
val service = context.actorSelection(RootActorPath(address) / servicePathElements)
|
||||
service ! StatsJob("this is the text that will be analyzed")
|
||||
case result: StatsResult ⇒
|
||||
println(result)
|
||||
|
|
|
|||
|
|
@ -109,7 +109,7 @@ class TransformationBackend extends Actor {
|
|||
|
||||
def register(member: Member): Unit =
|
||||
if (member.hasRole("frontend"))
|
||||
context.actorFor(RootActorPath(member.address) / "user" / "frontend") !
|
||||
context.actorSelection(RootActorPath(member.address) / "user" / "frontend") !
|
||||
BackendRegistration
|
||||
}
|
||||
//#backend
|
||||
|
|
@ -93,18 +93,13 @@ abstract class StatsSampleSingleMasterSpec extends MultiNodeSpec(StatsSampleSing
|
|||
}
|
||||
|
||||
"show usage of the statsFacade" in within(40 seconds) {
|
||||
val facade = system.actorFor(RootActorPath(node(third).address) / "user" / "statsFacade")
|
||||
val facade = system.actorSelection(RootActorPath(node(third).address) / "user" / "statsFacade")
|
||||
|
||||
// eventually the service should be ok,
|
||||
// service and worker nodes might not be up yet
|
||||
awaitCond {
|
||||
awaitAssert {
|
||||
facade ! StatsJob("this is the text that will be analyzed")
|
||||
expectMsgPF() {
|
||||
case unavailble: JobFailed ⇒ false
|
||||
case StatsResult(meanWordLength) ⇒
|
||||
meanWordLength must be(3.875 plusOrMinus 0.001)
|
||||
true
|
||||
}
|
||||
expectMsgType[StatsResult](1.second).meanWordLength must be(3.875 plusOrMinus 0.001)
|
||||
}
|
||||
|
||||
testConductor.enter("done")
|
||||
|
|
|
|||
|
|
@ -118,17 +118,12 @@ abstract class StatsSampleSpec extends MultiNodeSpec(StatsSampleSpecConfig)
|
|||
}
|
||||
|
||||
def assertServiceOk(): Unit = {
|
||||
val service = system.actorFor(node(third) / "user" / "statsService")
|
||||
val service = system.actorSelection(node(third) / "user" / "statsService")
|
||||
// eventually the service should be ok,
|
||||
// first attempts might fail because worker actors not started yet
|
||||
awaitCond {
|
||||
awaitAssert {
|
||||
service ! StatsJob("this is the text that will be analyzed")
|
||||
expectMsgPF() {
|
||||
case unavailble: JobFailed ⇒ false
|
||||
case StatsResult(meanWordLength) ⇒
|
||||
meanWordLength must be(3.875 plusOrMinus 0.001)
|
||||
true
|
||||
}
|
||||
expectMsgType[StatsResult](1.second).meanWordLength must be(3.875 plusOrMinus 0.001)
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -101,17 +101,12 @@ abstract class StatsSampleJapiSpec extends MultiNodeSpec(StatsSampleJapiSpecConf
|
|||
}
|
||||
|
||||
def assertServiceOk(): Unit = {
|
||||
val service = system.actorFor(node(third) / "user" / "statsService")
|
||||
val service = system.actorSelection(node(third) / "user" / "statsService")
|
||||
// eventually the service should be ok,
|
||||
// first attempts might fail because worker actors not started yet
|
||||
awaitCond {
|
||||
awaitAssert {
|
||||
service ! new StatsJob("this is the text that will be analyzed")
|
||||
expectMsgPF() {
|
||||
case unavailble: JobFailed ⇒ false
|
||||
case r: StatsResult ⇒
|
||||
r.getMeanWordLength must be(3.875 plusOrMinus 0.001)
|
||||
true
|
||||
}
|
||||
expectMsgType[StatsResult](1.second).getMeanWordLength must be(3.875 plusOrMinus 0.001)
|
||||
}
|
||||
}
|
||||
//#test-statsService
|
||||
|
|
|
|||
|
|
@ -97,18 +97,13 @@ abstract class StatsSampleSingleMasterJapiSpec extends MultiNodeSpec(StatsSample
|
|||
}
|
||||
|
||||
"show usage of the statsFacade" in within(40 seconds) {
|
||||
val facade = system.actorFor(RootActorPath(node(third).address) / "user" / "statsFacade")
|
||||
val facade = system.actorSelection(RootActorPath(node(third).address) / "user" / "statsFacade")
|
||||
|
||||
// eventually the service should be ok,
|
||||
// service and worker nodes might not be up yet
|
||||
awaitCond {
|
||||
awaitAssert {
|
||||
facade ! new StatsJob("this is the text that will be analyzed")
|
||||
expectMsgPF() {
|
||||
case unavailble: JobFailed ⇒ false
|
||||
case r: StatsResult ⇒
|
||||
r.getMeanWordLength must be(3.875 plusOrMinus 0.001)
|
||||
true
|
||||
}
|
||||
expectMsgType[StatsResult](1.second).getMeanWordLength must be(3.875 plusOrMinus 0.001)
|
||||
}
|
||||
|
||||
testConductor.enter("done")
|
||||
|
|
|
|||
|
|
@ -115,17 +115,12 @@ abstract class TransformationSampleSpec extends MultiNodeSpec(TransformationSamp
|
|||
}
|
||||
|
||||
def assertServiceOk(): Unit = {
|
||||
val transformationFrontend = system.actorFor("akka://" + system.name + "/user/frontend")
|
||||
val transformationFrontend = system.actorSelection("akka://" + system.name + "/user/frontend")
|
||||
// eventually the service should be ok,
|
||||
// backends might not have registered initially
|
||||
awaitCond {
|
||||
awaitAssert {
|
||||
transformationFrontend ! TransformationJob("hello")
|
||||
expectMsgPF() {
|
||||
case unavailble: JobFailed ⇒ false
|
||||
case TransformationResult(result) ⇒
|
||||
result must be("HELLO")
|
||||
true
|
||||
}
|
||||
expectMsgType[TransformationResult](1.second).text must be("HELLO")
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -116,17 +116,12 @@ abstract class TransformationSampleJapiSpec extends MultiNodeSpec(Transformation
|
|||
}
|
||||
|
||||
def assertServiceOk(): Unit = {
|
||||
val transformationFrontend = system.actorFor("akka://" + system.name + "/user/frontend")
|
||||
val transformationFrontend = system.actorSelection("akka://" + system.name + "/user/frontend")
|
||||
// eventually the service should be ok,
|
||||
// backends might not have registered initially
|
||||
awaitCond {
|
||||
awaitAssert {
|
||||
transformationFrontend ! new TransformationJob("hello")
|
||||
expectMsgPF() {
|
||||
case unavailble: JobFailed ⇒ false
|
||||
case r: TransformationResult ⇒
|
||||
r.getText must be("HELLO")
|
||||
true
|
||||
}
|
||||
expectMsgType[TransformationResult](1.second).getText must be("HELLO")
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -96,6 +96,8 @@ Now you should see something like this::
|
|||
[INFO] [01/25/2013 15:05:53.954] [run-main] [Remoting] Starting remoting
|
||||
[INFO] [01/25/2013 15:05:54.769] [run-main] [Remoting] Remoting started; listening on addresses :[akka.tcp://LookupApplication@127.0.0.1:2553]
|
||||
Started Lookup Application
|
||||
Not ready yet
|
||||
Not ready yet
|
||||
Add result: 0 + 22 = 22
|
||||
Add result: 41 + 71 = 112
|
||||
Add result: 61 + 14 = 75
|
||||
|
|
|
|||
|
|
@ -1,26 +0,0 @@
|
|||
/**
|
||||
* Copyright (C) 2009-2013 Typesafe Inc. <http://www.typesafe.com>
|
||||
*/
|
||||
package sample.remote.calculator.java;
|
||||
|
||||
import akka.actor.ActorRef;
|
||||
|
||||
public class InternalMsg {
|
||||
static class MathOpMsg {
|
||||
private final ActorRef actor;
|
||||
private final Op.MathOp mathOp;
|
||||
|
||||
MathOpMsg(ActorRef actor, Op.MathOp mathOp) {
|
||||
this.actor = actor;
|
||||
this.mathOp = mathOp;
|
||||
}
|
||||
|
||||
public ActorRef getActor() {
|
||||
return actor;
|
||||
}
|
||||
|
||||
public Op.MathOp getMathOp() {
|
||||
return mathOp;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -3,37 +3,35 @@
|
|||
*/
|
||||
package sample.remote.calculator.java;
|
||||
|
||||
import akka.actor.ActorRef;
|
||||
import akka.actor.UntypedActor;
|
||||
|
||||
import java.text.DecimalFormat;
|
||||
import java.text.NumberFormat;
|
||||
|
||||
//#actor
|
||||
public class JCreationActor extends UntypedActor {
|
||||
private static final NumberFormat formatter = new DecimalFormat("#0.00");
|
||||
|
||||
private final ActorRef remoteActor;
|
||||
|
||||
public JCreationActor(ActorRef remoteActor) {
|
||||
this.remoteActor = remoteActor;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onReceive(Object message) throws Exception {
|
||||
|
||||
if (message instanceof InternalMsg.MathOpMsg) {
|
||||
// forward math op to server actor
|
||||
InternalMsg.MathOpMsg msg = (InternalMsg.MathOpMsg) message;
|
||||
msg.getActor().tell(msg.getMathOp(), getSelf());
|
||||
if (message instanceof Op.MathOp) {
|
||||
// send message to server actor
|
||||
remoteActor.tell(message, getSelf());
|
||||
|
||||
} else if (message instanceof Op.MathResult) {
|
||||
|
||||
// receive reply from server actor
|
||||
|
||||
if (message instanceof Op.MultiplicationResult) {
|
||||
} else if (message instanceof Op.MultiplicationResult) {
|
||||
Op.MultiplicationResult result = (Op.MultiplicationResult) message;
|
||||
System.out.println("Mul result: " + result.getN1() + " * " +
|
||||
result.getN2() + " = " + result.getResult());
|
||||
System.out.printf("Mul result: %d * %d = %d\n",
|
||||
result.getN1(), result.getN2(), result.getResult());
|
||||
|
||||
} else if (message instanceof Op.DivisionResult) {
|
||||
Op.DivisionResult result = (Op.DivisionResult) message;
|
||||
System.out.println("Div result: " + result.getN1() + " / " +
|
||||
result.getN2() + " = " + formatter.format(result.getResult()));
|
||||
}
|
||||
System.out.printf("Div result: %.0f / %d = %.2f\n",
|
||||
result.getN1(), result.getN2(), result.getResult());
|
||||
|
||||
} else {
|
||||
unhandled(message);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -6,6 +6,8 @@ package sample.remote.calculator.java;
|
|||
import akka.actor.ActorRef;
|
||||
import akka.actor.ActorSystem;
|
||||
import akka.actor.Props;
|
||||
import akka.actor.UntypedActor;
|
||||
import akka.actor.UntypedActorFactory;
|
||||
import akka.kernel.Bootable;
|
||||
import com.typesafe.config.ConfigFactory;
|
||||
|
||||
|
|
@ -13,18 +15,22 @@ import com.typesafe.config.ConfigFactory;
|
|||
public class JCreationApplication implements Bootable {
|
||||
private ActorSystem system;
|
||||
private ActorRef actor;
|
||||
private ActorRef remoteActor;
|
||||
|
||||
public JCreationApplication() {
|
||||
system = ActorSystem.create("CreationApplication", ConfigFactory.load()
|
||||
.getConfig("remotecreation"));
|
||||
actor = system.actorOf(new Props(JCreationActor.class));
|
||||
remoteActor = system.actorOf(new Props(JAdvancedCalculatorActor.class),
|
||||
final ActorRef remoteActor = system.actorOf(new Props(JAdvancedCalculatorActor.class),
|
||||
"advancedCalculator");
|
||||
actor = system.actorOf(new Props().withCreator(new UntypedActorFactory() {
|
||||
public UntypedActor create() {
|
||||
return new JCreationActor(remoteActor);
|
||||
}
|
||||
}), "creationActor");
|
||||
|
||||
}
|
||||
|
||||
public void doSomething(Op.MathOp mathOp) {
|
||||
actor.tell(new InternalMsg.MathOpMsg(remoteActor, mathOp), null);
|
||||
actor.tell(mathOp, null);
|
||||
}
|
||||
|
||||
@Override
|
||||
|
|
|
|||
|
|
@ -3,34 +3,51 @@
|
|||
*/
|
||||
package sample.remote.calculator.java;
|
||||
|
||||
import akka.actor.ActorRef;
|
||||
import akka.actor.ActorIdentity;
|
||||
import akka.actor.Identify;
|
||||
import akka.actor.UntypedActor;
|
||||
import akka.actor.ReceiveTimeout;
|
||||
|
||||
//#actor
|
||||
public class JLookupActor extends UntypedActor {
|
||||
|
||||
private final String path;
|
||||
private ActorRef remoteActor = null;
|
||||
|
||||
public JLookupActor(String path) {
|
||||
this.path = path;
|
||||
sendIdentifyRequest();
|
||||
}
|
||||
|
||||
private void sendIdentifyRequest() {
|
||||
getContext().actorSelection(path).tell(new Identify(path), getSelf());
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onReceive(Object message) throws Exception {
|
||||
|
||||
if (message instanceof InternalMsg.MathOpMsg) {
|
||||
if (message instanceof ActorIdentity) {
|
||||
remoteActor = ((ActorIdentity) message).getRef();
|
||||
|
||||
} else if (message.equals(ReceiveTimeout.getInstance())) {
|
||||
sendIdentifyRequest();
|
||||
|
||||
} else if (remoteActor == null) {
|
||||
System.out.println("Not ready yet");
|
||||
|
||||
} else if (message instanceof Op.MathOp) {
|
||||
// send message to server actor
|
||||
InternalMsg.MathOpMsg msg = (InternalMsg.MathOpMsg) message;
|
||||
msg.getActor().tell(msg.getMathOp(), getSelf());
|
||||
remoteActor.tell(message, getSelf());
|
||||
|
||||
} else if (message instanceof Op.MathResult) {
|
||||
|
||||
// receive reply from server actor
|
||||
|
||||
if (message instanceof Op.AddResult) {
|
||||
} else if (message instanceof Op.AddResult) {
|
||||
Op.AddResult result = (Op.AddResult) message;
|
||||
System.out.println("Add result: " + result.getN1() + " + " +
|
||||
result.getN2() + " = " + result.getResult());
|
||||
System.out.printf("Add result: %d + %d = %d\n", result.getN1(), result.getN2(), result.getResult());
|
||||
|
||||
} else if (message instanceof Op.SubtractResult) {
|
||||
Op.SubtractResult result = (Op.SubtractResult) message;
|
||||
System.out.println("Sub result: " + result.getN1() + " - " +
|
||||
result.getN2() + " = " + result.getResult());
|
||||
}
|
||||
System.out.printf("Sub result: %d - %d = %d\n", result.getN1(), result.getN2(), result.getResult());
|
||||
|
||||
} else {
|
||||
unhandled(message);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,6 +7,8 @@ package sample.remote.calculator.java;
|
|||
import akka.actor.ActorRef;
|
||||
import akka.actor.ActorSystem;
|
||||
import akka.actor.Props;
|
||||
import akka.actor.UntypedActor;
|
||||
import akka.actor.UntypedActorFactory;
|
||||
import akka.kernel.Bootable;
|
||||
import com.typesafe.config.ConfigFactory;
|
||||
//#imports
|
||||
|
|
@ -15,18 +17,19 @@ import com.typesafe.config.ConfigFactory;
|
|||
public class JLookupApplication implements Bootable {
|
||||
private ActorSystem system;
|
||||
private ActorRef actor;
|
||||
private ActorRef remoteActor;
|
||||
|
||||
public JLookupApplication() {
|
||||
system = ActorSystem.create("LookupApplication", ConfigFactory.load()
|
||||
.getConfig("remotelookup"));
|
||||
actor = system.actorOf(new Props(JLookupActor.class));
|
||||
remoteActor = system.actorFor(
|
||||
"akka.tcp://CalculatorApplication@127.0.0.1:2552/user/simpleCalculator");
|
||||
system = ActorSystem.create("LookupApplication", ConfigFactory.load().getConfig("remotelookup"));
|
||||
final String path = "akka.tcp://CalculatorApplication@127.0.0.1:2552/user/simpleCalculator";
|
||||
actor = system.actorOf(new Props().withCreator(new UntypedActorFactory() {
|
||||
public UntypedActor create() {
|
||||
return new JLookupActor(path);
|
||||
}
|
||||
}), "lookupActor");
|
||||
}
|
||||
|
||||
public void doSomething(Op.MathOp mathOp) {
|
||||
actor.tell(new InternalMsg.MathOpMsg(remoteActor, mathOp), null);
|
||||
actor.tell(mathOp, null);
|
||||
}
|
||||
|
||||
@Override
|
||||
|
|
|
|||
|
|
@ -13,18 +13,16 @@ public class JSimpleCalculatorActor extends UntypedActor {
|
|||
if (message instanceof Op.Add) {
|
||||
Op.Add add = (Op.Add) message;
|
||||
System.out.println("Calculating " + add.getN1() + " + " + add.getN2());
|
||||
getSender()
|
||||
.tell(
|
||||
new Op.AddResult(add.getN1(), add.getN2(), add.getN1()
|
||||
+ add.getN2()), getSelf());
|
||||
getSender().tell(new Op.AddResult(
|
||||
add.getN1(), add.getN2(), add.getN1() + add.getN2()),
|
||||
getSelf());
|
||||
|
||||
} else if (message instanceof Op.Subtract) {
|
||||
Op.Subtract subtract = (Op.Subtract) message;
|
||||
System.out.println("Calculating " + subtract.getN1() + " - "
|
||||
+ subtract.getN2());
|
||||
getSender().tell(
|
||||
new Op.SubtractResult(subtract.getN1(), subtract.getN2(),
|
||||
subtract.getN1() - subtract.getN2()), getSelf());
|
||||
System.out.println("Calculating " + subtract.getN1() + " - " + subtract.getN2());
|
||||
getSender().tell(new Op.SubtractResult(
|
||||
subtract.getN1(), subtract.getN2(), subtract.getN1() - subtract.getN2()),
|
||||
getSelf());
|
||||
|
||||
} else {
|
||||
unhandled(message);
|
||||
|
|
|
|||
|
|
@ -16,12 +16,13 @@ class CreationApplication extends Bootable {
|
|||
//#setup
|
||||
val system =
|
||||
ActorSystem("RemoteCreation", ConfigFactory.load.getConfig("remotecreation"))
|
||||
val localActor = system.actorOf(Props[CreationActor], "creationActor")
|
||||
val remoteActor =
|
||||
system.actorOf(Props[AdvancedCalculatorActor], "advancedCalculator")
|
||||
val remoteActor = system.actorOf(Props[AdvancedCalculatorActor],
|
||||
name = "advancedCalculator")
|
||||
val localActor = system.actorOf(Props(new CreationActor(remoteActor)),
|
||||
name = "creationActor")
|
||||
|
||||
def doSomething(op: MathOp): Unit =
|
||||
localActor ! ((remoteActor, op))
|
||||
localActor ! op
|
||||
//#setup
|
||||
|
||||
def startup() {
|
||||
|
|
@ -33,14 +34,14 @@ class CreationApplication extends Bootable {
|
|||
}
|
||||
|
||||
//#actor
|
||||
class CreationActor extends Actor {
|
||||
class CreationActor(remoteActor: ActorRef) extends Actor {
|
||||
def receive = {
|
||||
case (actor: ActorRef, op: MathOp) ⇒ actor ! op
|
||||
case op: MathOp ⇒ remoteActor ! op
|
||||
case result: MathResult ⇒ result match {
|
||||
case MultiplicationResult(n1, n2, r) ⇒
|
||||
println("Mul result: %d * %d = %d".format(n1, n2, r))
|
||||
printf("Mul result: %d * %d = %d\n", n1, n2, r)
|
||||
case DivisionResult(n1, n2, r) ⇒
|
||||
println("Div result: %.0f / %d = %.2f".format(n1, n2, r))
|
||||
printf("Div result: %.0f / %d = %.2f\n", n1, n2, r)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,23 +7,26 @@ package sample.remote.calculator
|
|||
* comments like //#<tag> are there for inclusion into docs, please don’t remove
|
||||
*/
|
||||
|
||||
import akka.kernel.Bootable
|
||||
import scala.util.Random
|
||||
//#imports
|
||||
import scala.concurrent.duration._
|
||||
import com.typesafe.config.ConfigFactory
|
||||
import akka.actor.{ ActorRef, Props, Actor, ActorSystem }
|
||||
import akka.actor.Identify
|
||||
import akka.actor.ActorIdentity
|
||||
import akka.kernel.Bootable
|
||||
import akka.actor.ReceiveTimeout
|
||||
//#imports
|
||||
|
||||
class LookupApplication extends Bootable {
|
||||
//#setup
|
||||
val system =
|
||||
ActorSystem("LookupApplication", ConfigFactory.load.getConfig("remotelookup"))
|
||||
val actor = system.actorOf(Props[LookupActor], "lookupActor")
|
||||
val remoteActor = system.actorFor(
|
||||
"akka.tcp://CalculatorApplication@127.0.0.1:2552/user/simpleCalculator")
|
||||
val remotePath =
|
||||
"akka.tcp://CalculatorApplication@127.0.0.1:2552/user/simpleCalculator"
|
||||
val actor = system.actorOf(Props(new LookupActor(remotePath)), "lookupActor")
|
||||
|
||||
def doSomething(op: MathOp): Unit =
|
||||
actor ! ((remoteActor, op))
|
||||
actor ! op
|
||||
//#setup
|
||||
|
||||
def startup() {
|
||||
|
|
@ -35,14 +38,30 @@ class LookupApplication extends Bootable {
|
|||
}
|
||||
|
||||
//#actor
|
||||
class LookupActor extends Actor {
|
||||
class LookupActor(path: String) extends Actor {
|
||||
|
||||
context.setReceiveTimeout(3.seconds)
|
||||
sendIdentifyRequest()
|
||||
|
||||
def sendIdentifyRequest(): Unit =
|
||||
context.actorSelection(path) ! Identify(path)
|
||||
|
||||
def receive = {
|
||||
case (actor: ActorRef, op: MathOp) ⇒ actor ! op
|
||||
case ActorIdentity(`path`, Some(actor)) ⇒
|
||||
context.setReceiveTimeout(Duration.Undefined)
|
||||
context.become(active(actor))
|
||||
case ActorIdentity(`path`, None) ⇒ println(s"Remote actor not availible: $path")
|
||||
case ReceiveTimeout ⇒ sendIdentifyRequest()
|
||||
case _ ⇒ println("Not ready yet")
|
||||
}
|
||||
|
||||
def active(actor: ActorRef): Actor.Receive = {
|
||||
case op: MathOp ⇒ actor ! op
|
||||
case result: MathResult ⇒ result match {
|
||||
case AddResult(n1, n2, r) ⇒
|
||||
println("Add result: %d + %d = %d".format(n1, n2, r))
|
||||
printf("Add result: %d + %d = %d\n", n1, n2, r)
|
||||
case SubtractResult(n1, n2, r) ⇒
|
||||
println("Sub result: %d - %d = %d".format(n1, n2, r))
|
||||
printf("Sub result: %d - %d = %d\n", n1, n2, r)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -53,7 +53,7 @@ class AkkaSpecSpec extends WordSpec with MustMatchers {
|
|||
val latch = new TestLatch(1)(system)
|
||||
system.registerOnTermination(latch.countDown())
|
||||
|
||||
system.actorFor("/") ! PoisonPill
|
||||
system.actorSelection("/") ! PoisonPill
|
||||
|
||||
Await.ready(latch, 2 seconds)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -87,7 +87,11 @@ class TestProbeSpec extends AkkaSpec with DefaultTimeout {
|
|||
|
||||
"watch actors when queue non-empty" in {
|
||||
val probe = TestProbe()
|
||||
val target = system.actorFor("/nonexistent") // deadLetters does not send Terminated
|
||||
// deadLetters does not send Terminated
|
||||
val target = system.actorOf(Props(new Actor {
|
||||
def receive = Actor.emptyBehavior
|
||||
}))
|
||||
system.stop(target)
|
||||
probe.ref ! "hello"
|
||||
probe watch target
|
||||
probe.expectMsg(1.seconds, "hello")
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue