'git mv' rst resources to md
This is mainly intended to keep the git history as neat as possible. No actual conversion yet, so now both the rst and the paradox docs are broken, which will be fixed in the next commits.
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Arnout Engelen
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/**
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* Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
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*/
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package jdocs.event;
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//#imports
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import akka.actor.*;
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import akka.event.Logging;
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import akka.event.LoggingAdapter;
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//#imports
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//#imports-listener
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import akka.event.Logging.InitializeLogger;
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import akka.event.Logging.Error;
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import akka.event.Logging.Warning;
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import akka.event.Logging.Info;
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import akka.event.Logging.Debug;
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//#imports-listener
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import jdocs.AbstractJavaTest;
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import akka.testkit.javadsl.TestKit;
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import org.junit.Test;
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import java.util.Optional;
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//#imports-mdc
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import akka.event.DiagnosticLoggingAdapter;
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import java.util.HashMap;
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import java.util.Map;
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//#imports-mdc
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//#imports-deadletter
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import akka.actor.ActorRef;
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import akka.actor.ActorSystem;
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//#imports-deadletter
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public class LoggingDocTest extends AbstractJavaTest {
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@Test
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public void useLoggingActor() {
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ActorSystem system = ActorSystem.create("MySystem");
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ActorRef myActor = system.actorOf(Props.create(MyActor.class, this));
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myActor.tell("test", ActorRef.noSender());
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TestKit.shutdownActorSystem(system);
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}
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@Test
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public void useLoggingActorWithMDC() {
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ActorSystem system = ActorSystem.create("MyDiagnosticSystem");
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ActorRef mdcActor = system.actorOf(Props.create(MdcActor.class, this));
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mdcActor.tell("some request", ActorRef.noSender());
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TestKit.shutdownActorSystem(system);
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}
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@Test
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public void subscribeToDeadLetters() {
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//#deadletters
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final ActorSystem system = ActorSystem.create("DeadLetters");
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final ActorRef actor = system.actorOf(Props.create(DeadLetterActor.class));
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system.eventStream().subscribe(actor, DeadLetter.class);
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//#deadletters
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TestKit.shutdownActorSystem(system);
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}
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//#superclass-subscription-eventstream
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interface AllKindsOfMusic { }
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class Jazz implements AllKindsOfMusic {
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final public String artist;
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public Jazz(String artist) {
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this.artist = artist;
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}
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}
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class Electronic implements AllKindsOfMusic {
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final public String artist;
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public Electronic(String artist) {
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this.artist = artist;
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}
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}
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static class Listener extends AbstractActor {
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@Override
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public Receive createReceive() {
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return receiveBuilder()
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.match(Jazz.class, msg ->
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System.out.printf("%s is listening to: %s%n", getSelf().path().name(), msg)
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)
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.match(Electronic.class, msg ->
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System.out.printf("%s is listening to: %s%n", getSelf().path().name(), msg)
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)
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.build();
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}
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}
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//#superclass-subscription-eventstream
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@Test
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public void subscribeBySubclassification() {
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final ActorSystem system = ActorSystem.create("DeadLetters");
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//#superclass-subscription-eventstream
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final ActorRef actor = system.actorOf(Props.create(DeadLetterActor.class));
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system.eventStream().subscribe(actor, DeadLetter.class);
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final ActorRef jazzListener = system.actorOf(Props.create(Listener.class));
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final ActorRef musicListener = system.actorOf(Props.create(Listener.class));
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system.eventStream().subscribe(jazzListener, Jazz.class);
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system.eventStream().subscribe(musicListener, AllKindsOfMusic.class);
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// only musicListener gets this message, since it listens to *all* kinds of music:
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system.eventStream().publish(new Electronic("Parov Stelar"));
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// jazzListener and musicListener will be notified about Jazz:
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system.eventStream().publish(new Jazz("Sonny Rollins"));
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//#superclass-subscription-eventstream
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TestKit.shutdownActorSystem(system);
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}
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@Test
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public void subscribeToSuppressedDeadLetters() {
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final ActorSystem system = ActorSystem.create("SuppressedDeadLetters");
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final ActorRef actor = system.actorOf(Props.create(DeadLetterActor.class));
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//#suppressed-deadletters
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system.eventStream().subscribe(actor, SuppressedDeadLetter.class);
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//#suppressed-deadletters
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TestKit.shutdownActorSystem(system);
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}
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@Test
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public void subscribeToAllDeadLetters() {
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final ActorSystem system = ActorSystem.create("AllDeadLetters");
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final ActorRef actor = system.actorOf(Props.create(DeadLetterActor.class));
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//#all-deadletters
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system.eventStream().subscribe(actor, AllDeadLetters.class);
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//#all-deadletters
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TestKit.shutdownActorSystem(system);
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}
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@Test
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public void demonstrateMultipleArgs() {
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final ActorSystem system = ActorSystem.create("multiArg");
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//#array
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final Object[] args = new Object[] { "The", "brown", "fox", "jumps", 42 };
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system.log().debug("five parameters: {}, {}, {}, {}, {}", args);
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//#array
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TestKit.shutdownActorSystem(system);
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}
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//#my-actor
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class MyActor extends AbstractActor {
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LoggingAdapter log = Logging.getLogger(getContext().getSystem(), this);
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@Override
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public void preStart() {
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log.debug("Starting");
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}
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@Override
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public void preRestart(Throwable reason, Optional<Object> message) {
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log.error(reason, "Restarting due to [{}] when processing [{}]",
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reason.getMessage(), message.isPresent() ? message.get() : "");
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}
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@Override
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public Receive createReceive() {
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return receiveBuilder()
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.matchEquals("test", msg ->
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log.info("Received test")
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)
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.matchAny(msg ->
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log.warning("Received unknown message: {}", msg)
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)
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.build();
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}
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}
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//#my-actor
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//#mdc-actor
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class MdcActor extends AbstractActor {
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final DiagnosticLoggingAdapter log = Logging.getLogger(this);
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@Override
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public Receive createReceive() {
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return receiveBuilder()
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.matchAny(msg -> {
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Map<String, Object> mdc;
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mdc = new HashMap<String, Object>();
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mdc.put("requestId", 1234);
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mdc.put("visitorId", 5678);
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log.setMDC(mdc);
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log.info("Starting new request");
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log.clearMDC();
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})
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.build();
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}
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}
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//#mdc-actor
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//#my-event-listener
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class MyEventListener extends AbstractActor {
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@Override
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public Receive createReceive() {
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return receiveBuilder()
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.match(InitializeLogger.class, msg -> {
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getSender().tell(Logging.loggerInitialized(), getSelf());
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})
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.match(Error.class, msg -> {
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// ...
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})
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.match(Warning.class, msg -> {
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// ...
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})
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.match(Info.class, msg -> {
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// ...
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})
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.match(Debug.class, msg -> {
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// ...
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})
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.build();
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}
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}
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//#my-event-listener
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static
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//#deadletter-actor
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public class DeadLetterActor extends AbstractActor {
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@Override
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public Receive createReceive() {
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return receiveBuilder()
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.match(DeadLetter.class, msg -> {
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System.out.println(msg);
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})
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.build();
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}
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}
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//#deadletter-actor
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}
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