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DOC: Better use of pipeTo in FaultHandlingDocSample

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This commit is contained in:
Patrik Nordwall 2012-01-30 11:56:09 +01:00
parent ebec797322
commit c1178c9b1a
2 changed files with 38 additions and 17 deletions
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35
akka-docs/java/code/akka/docs/actor/japi/FaultHandlingDocSample.java
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@ -35,7 +35,7 @@ public class FaultHandlingDocSample {
/**
* Runs the sample
*/
public static void main(String... args) {
public static void main(String[] args) {
Config config = ConfigFactory.parseString("akka.loglevel = DEBUG \n" + "akka.actor.debug.lifecycle = on");
ActorSystem system = ActorSystem.create("FaultToleranceSample", config);
@ -62,11 +62,11 @@ public class FaultHandlingDocSample {
public void onReceive(Object msg) {
log.debug("received message {}", msg);
if (msg instanceof CurrentCount) {
CurrentCount current = (CurrentCount) msg;
log.info("Current count for [{}] is [{}]", current.key, current.count);
if (current.count > 50) {
log.info("That's enough, shutting down");
if (msg instanceof Progress) {
Progress progress = (Progress) msg;
log.info("Current progress: {} %", progress.percent);
if (progress.percent >= 100.0) {
log.info("That's all, shutting down");
getContext().system().shutdown();
}
} else if (msg == Actors.receiveTimeout()) {
@ -83,13 +83,25 @@ public class FaultHandlingDocSample {
public interface WorkerApi {
public static final Object Start = "Start";
public static final Object Do = "Do";
public static class Progress {
public final double percent;
public Progress(double percent) {
this.percent = percent;
}
public String toString() {
return String.format("%s(%s)", getClass().getSimpleName(), percent);
}
}
}
//#messages
/**
* Worker performs some work when it receives the Start message. It will
* continuously notify the sender of the Start message of current progress.
* continuously notify the sender of the Start message of current Progress.
* The Worker supervise the CounterService.
*/
public static class Worker extends UntypedActor {
@ -99,6 +111,7 @@ public class FaultHandlingDocSample {
// The sender of the initial Start message will continuously be notified about progress
ActorRef progressListener;
final ActorRef counterService = getContext().actorOf(new Props(CounterService.class), "counter");
final int totalCount = 51;
// Stop the CounterService child if it throws ServiceUnavailable
private static SupervisorStrategy strategy = new OneForOneStrategy(-1, Duration.Inf(),
@ -128,8 +141,12 @@ public class FaultHandlingDocSample {
counterService.tell(new Increment(1), getSelf());
counterService.tell(new Increment(1), getSelf());
// Send current count to the initial sender
pipeTo(ask(counterService, GetCurrentCount, askTimeout), progressListener);
// Send current progress to the initial sender
pipeTo(ask(counterService, GetCurrentCount, askTimeout).map(new Function<CurrentCount, Progress>() {
public Progress apply(CurrentCount c) {
return new Progress(100.0 * c.count / totalCount);
}
}), progressListener);
} else {
unhandled(msg);
}