Akka actors/scala - single onSuccess for multiple asks -

Akka actors/scala - single onSuccess for multiple asks -

i have chain of akka actors

a --> b --> c

actor 'asks' actor b in turn 'asks' actor c. actor needs wait till actor c has finished processing. b lean layer , nil more passing(asking) message c , returns future a. b

{ case msgfroma => sender ! c ? msgfroma }

hence getting future[any].

the way handling request using nested maps

actorreffactory.actorof(props[a]) ? msga map { resp => // type cast future , utilize map finish processing. resp.asinstanceof[future[_]] map { case success => // finish processing case failure(exc) => // log error

this works(i.e final processing happens when actor c has finished processing ) needless looks horrible. tried using flatmaps not create work. ideas create :) thanks

a more proper way:

in a:

val f: future[mytype] = (b ? msg).mapto[mytype] f oncomplete { case success(res) => // case failure(t) => // }

in b, utilize forward:

{ case msgfroma => c forwards msgfroma }

in c:

// phone call database // update cache sender() ! res // sends

scala akka actor