import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
import scala.concurrent.Await;
import scala.concurrent.Future;
import scala.concurrent.duration.Duration;
public class MessageCollectorActor extends UntypedActor {
+ private static final String ARE_YOU_READY = "ARE_YOU_READY";
+
private final List<Object> messages = new ArrayList<>();
@Override public void onReceive(Object message) throws Exception {
+ if(message.equals(ARE_YOU_READY)) {
+ getSender().tell("yes", getSelf());
+ return;
+ }
+
if(message instanceof String){
if("get-all-messages".equals(message)){
- getSender().tell(new ArrayList(messages), getSelf());
+ getSender().tell(new ArrayList<>(messages), getSelf());
}
- } else {
+ } else if(message != null) {
messages.add(message);
}
}
Timeout operationTimeout = new Timeout(operationDuration);
Future<Object> future = Patterns.ask(actor, "get-all-messages", operationTimeout);
- try {
- return (List<Object>) Await.result(future, operationDuration);
- } catch (Exception e) {
- throw e;
- }
+ return (List<Object>) Await.result(future, operationDuration);
}
/**
return output;
}
+ public static void waitUntilReady(ActorRef actor) throws Exception {
+ long timeout = 500;
+ FiniteDuration duration = Duration.create(timeout, TimeUnit.MILLISECONDS);
+ for(int i = 0; i < 10; i++) {
+ try {
+ Await.ready(Patterns.ask(actor, ARE_YOU_READY, timeout), duration);
+ return;
+ } catch (TimeoutException e) {
+ }
+ }
+
+ throw new TimeoutException("Actor not ready in time.");
+ }
}