hi hakkers,
i have two actors: the first one patterns.ask() a message to the second one
which returns a response:
a snippet osender:
...
public PartialFunction<Object, BoxedUnit> receive() {
return ReceiveBuilder
.match( Boolean.class, msg -> {
ActorRef receiver = context().system()
.actorOf( Props.create(
ReceiveActor.class ), ReceiveActor.class
.getSimpleName() );
Future<Object> future = Patterns.ask( receiver, "Hello
world", new Timeout( Duration
.create( 5, "seconds" ) ) );
Patterns.pipe( future, context().dispatcher() ).to( self()
);
} )
.match( String.class, msg-> log(msg) )
.build();
}
*...*
receiver:
...
public PartialFunction<Object, BoxedUnit> receive() {
return ReceiveBuilder.matchAny( msg -> {
sender().tell( ((String)msg).toUpperCase(), self() );
} ).build();
}
...
all is good, a message is sent and response arrives as expected.
now, i try to change a receiver so that the message handling is done in a
separate thread:
...
public PartialFunction<Object, BoxedUnit> receive() {
return ReceiveBuilder.matchAny( msg -> {
Future<String> done= Futures.future( (Callable<String>) () ->
((String)msg).toUpperCase(), context().dispatcher() ) ;
done.onSuccess( new OnSuccess<String>() {
@Override
public void onSuccess( String result ) throws Throwable {
sender().tell( result, self() );
}
}, context().dispatcher() );
} ).build();
}
...
in this case i get the following error:
[akka://main/deadLetters] Message [java.lang.String] from
Actor[akka://main/user/ReceiveActor#603147641] to
Actor[akka://main/deadLetters] was not delivered.
it seems that sender() within the future is not recognizable as my sender
actor anymore.
what do i miss and what is the solution?
thanks!
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