/**
* Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com>
*/
package sample.persistence;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.Props;
import akka.japi.pf.ReceiveBuilder;
import akka.persistence.AbstractPersistentActor;
import scala.PartialFunction;
import scala.runtime.BoxedUnit;
import java.util.ArrayList;
public class PersistentActorFailureExample {
public static class ExamplePersistentActor extends AbstractPersistentActor {
private ArrayList<Object> received = new ArrayList<Object>();
@Override
public String persistenceId() { return "sample-id-2"; }
@Override
public PartialFunction<Object, BoxedUnit> receiveCommand() {
return ReceiveBuilder.
match(String.class, s -> s.equals("boom"), s -> {throw new RuntimeException("boom");}).
match(String.class, s -> s.equals("print"), s -> System.out.println("received " + received)).
match(String.class, s -> {
persist(s, evt -> {
received.add(evt);
});
}).
build();
}
@Override
public PartialFunction<Object, BoxedUnit> receiveRecover() {
return ReceiveBuilder.
match(String.class, s -> received.add(s)).
build();
}
}
public static void main(String... args) throws Exception {
final ActorSystem system = ActorSystem.create("example");
final ActorRef persistentActor = system.actorOf(Props.create(ExamplePersistentActor.class), "persistentActor-2");
persistentActor.tell("a", null);
persistentActor.tell("print", null);
persistentActor.tell("boom", null);
persistentActor.tell("print", null);
persistentActor.tell("b", null);
persistentActor.tell("print", null);
persistentActor.tell("c", null);
persistentActor.tell("print", null);
// Will print in a first run (i.e. with empty journal):
// received [a]
// received [a, b]
// received [a, b, c]
// Will print in a second run:
// received [a, b, c, a]
// received [a, b, c, a, b]
// received [a, b, c, a, b, c]
// etc ...
Thread.sleep(1000);
system.shutdown();
}
}