ebadd567b2
* Separate routing logic, to be usable stand alone, e.g. in actors * Simplify RouterConfig, only a factory * Move reading of config from Deployer to the RouterConfig * Distiction between Pool and Group router types * Remove usage of actorFor, use ActorSelection * Management messages to add and remove routees * Simplify the internals of RoutedActorCell & co * Move resize specific code to separate RoutedActorCell subclass * Change resizer api to only return capacity change * Resizer only allowed together with Pool * Re-implement all routers, and keep old api during deprecation phase * Replace ClusterRouterConfig, deprecation * Rewrite documentation * Migration guide * Also includes related ticket: +act #3087 Create nicer Props factories for RouterConfig
412 lines
12 KiB
Java
412 lines
12 KiB
Java
/**
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* Copyright (C) 2009-2013 Typesafe Inc. <http://www.typesafe.com>
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*/
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package docs.jrouting;
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import akka.testkit.AkkaJUnitActorSystemResource;
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import org.junit.ClassRule;
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import org.junit.Test;
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import static org.junit.Assert.*;
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import scala.concurrent.duration.Duration;
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import scala.concurrent.duration.FiniteDuration;
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import com.typesafe.config.ConfigFactory;
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import java.io.Serializable;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.concurrent.TimeUnit;
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import akka.testkit.JavaTestKit;
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import akka.actor.ActorSystem;
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//#imports1
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import akka.actor.ActorRef;
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import akka.actor.Props;
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import akka.actor.Terminated;
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import akka.actor.UntypedActor;
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import akka.routing.ActorRefRoutee;
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import akka.routing.Routee;
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import akka.routing.Router;
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//#imports1
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//#imports2
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import akka.actor.Address;
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import akka.actor.AddressFromURIString;
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import akka.actor.Kill;
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import akka.actor.PoisonPill;
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import akka.actor.SupervisorStrategy;
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import akka.actor.OneForOneStrategy;
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import akka.remote.routing.RemoteRouterConfig;
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import akka.routing.Broadcast;
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import akka.routing.BroadcastGroup;
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import akka.routing.BroadcastPool;
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import akka.routing.ConsistentHashingGroup;
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import akka.routing.ConsistentHashingPool;
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import akka.routing.DefaultResizer;
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import akka.routing.FromConfig;
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import akka.routing.RandomGroup;
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import akka.routing.RandomPool;
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import akka.routing.RoundRobinGroup;
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import akka.routing.RoundRobinPool;
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import akka.routing.RoundRobinRoutingLogic;
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import akka.routing.ScatterGatherFirstCompletedGroup;
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import akka.routing.ScatterGatherFirstCompletedPool;
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import akka.routing.SmallestMailboxPool;
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//#imports2
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public class RouterDocTest {
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@ClassRule
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public static AkkaJUnitActorSystemResource actorSystemResource =
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new AkkaJUnitActorSystemResource("RouterDocTest",
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ConfigFactory.parseString(docs.routing.RouterDocSpec.config()));
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private final ActorSystem system = actorSystemResource.getSystem();
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static
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//#router-in-actor
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public final class Work implements Serializable {
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private static final long serialVersionUID = 1L;
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public final String payload;
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public Work(String payload) {
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this.payload = payload;
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}
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}
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//#router-in-actor
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static
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//#router-in-actor
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public class Master extends UntypedActor {
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Router router;
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{
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List<Routee> routees = new ArrayList<Routee>();
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for (int i = 0; i < 5; i++) {
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ActorRef r = getContext().actorOf(Props.create(Worker.class));
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getContext().watch(r);
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routees.add(new ActorRefRoutee(r));
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}
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router = new Router(new RoundRobinRoutingLogic(), routees);
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}
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public void onReceive(Object msg) {
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if (msg instanceof Work) {
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router.route(msg, getSender());
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} else if (msg instanceof Terminated) {
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router = router.removeRoutee(((Terminated) msg).actor());
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ActorRef r = getContext().actorOf(Props.create(Worker.class));
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getContext().watch(r);
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router = router.addRoutee(new ActorRefRoutee(r));
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}
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}
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}
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//#router-in-actor
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static public class Worker extends UntypedActor {
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public void onReceive(Object msg) {}
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}
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static public class Echo extends UntypedActor {
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public void onReceive(Object msg) {
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getSender().tell(msg, getSelf());
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}
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}
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static public class Replier extends UntypedActor {
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public void onReceive(Object msg) {
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//#reply-with-self
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getSender().tell("reply", getSelf());
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//#reply-with-self
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//#reply-with-parent
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getSender().tell("reply", getContext().parent());
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//#reply-with-parent
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}
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}
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static
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//#create-worker-actors
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public class Workers extends UntypedActor {
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@Override public void preStart() {
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getContext().actorOf(Props.create(Worker.class), "w1");
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getContext().actorOf(Props.create(Worker.class), "w2");
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getContext().actorOf(Props.create(Worker.class), "w3");
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}
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// ...
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//#create-worker-actors
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public void onReceive(Object msg) {}
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}
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static public class Parent extends UntypedActor {
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//#paths
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List<String> paths = Arrays.asList("/user/workers/w1", "/user/workers/w2",
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"/user/workers/w3");
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//#paths
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//#round-robin-pool-1
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ActorRef router1 =
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getContext().actorOf(FromConfig.getInstance().props(Props.create(Worker.class)),
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"router1");
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//#round-robin-pool-1
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//#round-robin-pool-2
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ActorRef router2 =
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getContext().actorOf(new RoundRobinPool(5).props(Props.create(Worker.class)),
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"router2");
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//#round-robin-pool-2
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//#round-robin-group-1
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ActorRef router3 =
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getContext().actorOf(FromConfig.getInstance().props(), "router3");
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//#round-robin-group-1
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//#round-robin-group-2
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ActorRef router4 =
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getContext().actorOf(new RoundRobinGroup(paths).props(), "router4");
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//#round-robin-group-2
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//#random-pool-1
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ActorRef router5 =
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getContext().actorOf(FromConfig.getInstance().props(
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Props.create(Worker.class)), "router5");
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//#random-pool-1
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//#random-pool-2
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ActorRef router6 =
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getContext().actorOf(new RandomPool(5).props(Props.create(Worker.class)),
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"router6");
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//#random-pool-2
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//#random-group-1
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ActorRef router7 =
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getContext().actorOf(FromConfig.getInstance().props(), "router7");
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//#random-group-1
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//#random-group-2
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ActorRef router8 =
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getContext().actorOf(new RandomGroup(paths).props(), "router8");
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//#random-group-2
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//#smallest-mailbox-pool-1
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ActorRef router9 =
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getContext().actorOf(FromConfig.getInstance().props(
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Props.create(Worker.class)), "router9");
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//#smallest-mailbox-pool-1
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//#smallest-mailbox-pool-2
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ActorRef router10 =
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getContext().actorOf(new SmallestMailboxPool(5).props(
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Props.create(Worker.class)), "router10");
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//#smallest-mailbox-pool-2
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//#broadcast-pool-1
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ActorRef router11 =
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getContext().actorOf(FromConfig.getInstance().props(
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Props.create(Worker.class)), "router11");
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//#broadcast-pool-1
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//#broadcast-pool-2
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ActorRef router12 =
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getContext().actorOf(new BroadcastPool(5).props(Props.create(Worker.class)),
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"router12");
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//#broadcast-pool-2
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//#broadcast-group-1
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ActorRef router13 =
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getContext().actorOf(FromConfig.getInstance().props(), "router13");
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//#broadcast-group-1
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//#broadcast-group-2
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ActorRef router14 =
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getContext().actorOf(new BroadcastGroup(paths).props(), "router14");
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//#broadcast-group-2
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//#scatter-gather-pool-1
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ActorRef router15 =
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getContext().actorOf(FromConfig.getInstance().props(
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Props.create(Worker.class)), "router15");
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//#scatter-gather-pool-1
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//#scatter-gather-pool-2
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FiniteDuration within = FiniteDuration.create(10, TimeUnit.SECONDS);
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ActorRef router16 =
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getContext().actorOf(new ScatterGatherFirstCompletedPool(5, within).props(
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Props.create(Worker.class)), "router16");
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//#scatter-gather-pool-2
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//#scatter-gather-group-1
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ActorRef router17 =
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getContext().actorOf(FromConfig.getInstance().props(), "router17");
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//#scatter-gather-group-1
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//#scatter-gather-group-2
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FiniteDuration within2 = FiniteDuration.create(10, TimeUnit.SECONDS);
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ActorRef router18 =
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getContext().actorOf(new ScatterGatherFirstCompletedGroup(paths, within2).props(),
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"router18");
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//#scatter-gather-group-2
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//#consistent-hashing-pool-1
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ActorRef router19 =
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getContext().actorOf(FromConfig.getInstance().props(Props.create(Worker.class)),
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"router19");
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//#consistent-hashing-pool-1
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//#consistent-hashing-pool-2
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ActorRef router20 =
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getContext().actorOf(new ConsistentHashingPool(5).props(
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Props.create(Worker.class)), "router20");
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//#consistent-hashing-pool-2
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//#consistent-hashing-group-1
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ActorRef router21 =
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getContext().actorOf(FromConfig.getInstance().props(), "router21");
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//#consistent-hashing-group-1
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//#consistent-hashing-group-2
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ActorRef router22 =
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getContext().actorOf(new ConsistentHashingGroup(paths).props(), "router22");
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//#consistent-hashing-group-2
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//#resize-pool-1
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ActorRef router23 =
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getContext().actorOf(FromConfig.getInstance().props(
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Props.create(Worker.class)), "router23");
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//#resize-pool-1
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//#resize-pool-2
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DefaultResizer resizer = new DefaultResizer(2, 15);
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ActorRef router24 =
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getContext().actorOf(new RoundRobinPool(5).withResizer(resizer).props(
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Props.create(Worker.class)), "router24");
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//#resize-pool-2
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public void onReceive(Object msg) {}
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}
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@Test
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public void createActors() {
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//#create-workers
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system.actorOf(Props.create(Workers.class), "workers");
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//#create-workers
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//#create-parent
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system.actorOf(Props.create(Parent.class), "parent");
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//#create-parent
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}
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@Test
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public void demonstrateDispatcher() {
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//#dispatchers
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Props props =
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// “head” will run on "router-dispatcher" dispatcher
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new RoundRobinPool(5).withDispatcher("router-dispatcher").props(
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Props.create(Worker.class))
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// Worker routees will run on "workers-dispatcher" dispatcher
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.withDispatcher("workers-dispatcher");
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ActorRef router = system.actorOf(props);
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//#dispatchers
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}
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@Test
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public void demonstrateBroadcast() {
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new JavaTestKit(system) {{
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ActorRef router = system.actorOf(new RoundRobinPool(5).props(
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Props.create(Echo.class)));
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//#broadcastDavyJonesWarning
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router.tell(new Broadcast("Watch out for Davy Jones' locker"), getTestActor());
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//#broadcastDavyJonesWarning
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assertEquals(5, receiveN(5).length);
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}};
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}
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@Test
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public void demonstratePoisonPill() {
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new JavaTestKit(system) {{
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ActorRef router = watch(system.actorOf(new RoundRobinPool(5).props(
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Props.create(Echo.class))));
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//#poisonPill
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router.tell(PoisonPill.getInstance(), getTestActor());
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//#poisonPill
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expectTerminated(router);
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}};
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}
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@Test
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public void demonstrateBroadcastPoisonPill() {
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new JavaTestKit(system) {{
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ActorRef router = watch(system.actorOf(new RoundRobinPool(5).props(
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Props.create(Echo.class))));
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//#broadcastPoisonPill
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router.tell(new Broadcast(PoisonPill.getInstance()), getTestActor());
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//#broadcastPoisonPill
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expectTerminated(router);
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}};
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}
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@Test
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public void demonstrateKill() {
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new JavaTestKit(system) {{
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ActorRef router = watch(system.actorOf(new RoundRobinPool(5).props(
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Props.create(Echo.class))));
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//#kill
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router.tell(Kill.getInstance(), getTestActor());
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//#kill
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expectTerminated(router);
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}};
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}
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@Test
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public void demonstrateBroadcastKill() {
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new JavaTestKit(system) {{
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ActorRef router = watch(system.actorOf(new RoundRobinPool(5).props(
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Props.create(Echo.class))));
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//#broadcastKill
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router.tell(new Broadcast(Kill.getInstance()), getTestActor());
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//#broadcastKill
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expectTerminated(router);
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}};
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}
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@Test
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public void demonstrateRemoteDeploy() {
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//#remoteRoutees
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Address[] addresses = {
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new Address("akka", "remotesys", "otherhost", 1234),
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AddressFromURIString.parse("akka://othersys@anotherhost:1234")};
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ActorRef routerRemote = system.actorOf(
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new RemoteRouterConfig(new RoundRobinPool(5), addresses).props(
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Props.create(Echo.class)));
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//#remoteRoutees
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}
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@Test
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public void demonstrateSupervisor() {
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//#supervision
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final SupervisorStrategy strategy =
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new OneForOneStrategy(5, Duration.create(1, TimeUnit.MINUTES),
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Collections.<Class<? extends Throwable>>singletonList(Exception.class));
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final ActorRef router = system.actorOf(new RoundRobinPool(5).
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withSupervisorStrategy(strategy).props(Props.create(Echo.class)));
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//#supervision
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}
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}
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