I am creating a directive for Akka HTTP using the javadsl that performs an
ask on an actor and then returns the resulting object in a type-friendly
way that other directives and route handlers can process easily.
For example:
public CompletionStage<MyClassType> askActor(String actorPath, Object
message, Timeout timeout) {
return extractActorSystem( actorSystem -> {
ActorRef actor = actorSystem.actorFor(actorPath);
CompletionStage<Object> result = PatternsCS.ask(actor, message,
timeout);
return (CompletionStage<MyClassType>) result;
});
}
The return doesn't work because I can't case from Object to MyClassType.
I've looked for a mapTo function in CompletionStage but couldn't find
anything, nor can I seem to find anything that works. I did try using the
Scala Future (using Patterns.ask instead) but ran into similar problems
extracting the type out. I'm sure the solution is quite simple but I can't
seem to crack this one.
Thanks in advance.
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