c566d5a106
* remove channels * remove View * remove Processor * collapse the complicated internal state management that was spread out between Processor, Eventsourced and Recovery * remove Recovery trait, this caused some duplication between Eventsourced and PersistentView, but but the enhanced PersistentView will not be based on recovery infrastructure, and therefore PersistentView code will be replaced anyway * remove PersistentBatch * remove LoopMessage * remove deleteMessages of individual messages * remove Persistent, PersistentRepr and PersistentImpl are kept * remove processorId * update doc sample code * note in migration guide about persistenceId * rename Resequencable to PersistentEnvelope
76 lines
2.1 KiB
Java
76 lines
2.1 KiB
Java
package sample.persistence;
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import akka.actor.ActorRef;
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import akka.actor.ActorSystem;
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import akka.actor.Props;
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import akka.japi.Procedure;
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import akka.persistence.UntypedPersistentActor;
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import java.util.ArrayList;
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public class PersistentActorFailureExample {
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public static class ExamplePersistentActor extends UntypedPersistentActor {
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@Override
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public String persistenceId() { return "sample-id-2"; }
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private ArrayList<Object> received = new ArrayList<Object>();
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@Override
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public void onReceiveCommand(Object message) throws Exception {
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if (message.equals("boom")) {
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throw new Exception("boom");
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} else if (message.equals("print")) {
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System.out.println("received " + received);
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} else if (message instanceof String) {
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String s = (String) message;
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persist(s, new Procedure<String>() {
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public void apply(String evt) throws Exception {
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received.add(evt);
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}
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});
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} else {
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unhandled(message);
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}
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}
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@Override
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public void onReceiveRecover(Object message) {
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if (message instanceof String) {
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received.add((String) message);
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} else {
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unhandled(message);
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}
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}
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}
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public static void main(String... args) throws Exception {
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final ActorSystem system = ActorSystem.create("example");
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final ActorRef persistentActor = system.actorOf(Props.create(ExamplePersistentActor.class), "persistentActor-2");
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persistentActor.tell("a", null);
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persistentActor.tell("print", null);
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persistentActor.tell("boom", null);
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persistentActor.tell("print", null);
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persistentActor.tell("b", null);
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persistentActor.tell("print", null);
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persistentActor.tell("c", null);
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persistentActor.tell("print", null);
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// Will print in a first run (i.e. with empty journal):
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// received [a]
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// received [a, b]
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// received [a, b, c]
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// Will print in a second run:
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// received [a, b, c, a]
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// received [a, b, c, a, b]
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// received [a, b, c, a, b, c]
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// etc ...
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Thread.sleep(1000);
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system.terminate();
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}
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}
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