Akka Actor Forward Message

by Online Tutorials Library July 22, 2022

Akka Actor Forward Message

You can forward a message from one actor to another. In this case, address/reference of an Actor is maintained even though the message is going through a ‘mediator’.

It is helpful when writing actors that work as routers, load-balancers, replicators etc.

Akka Actor Forward Message Example

 import akka.actor.{Actor,ActorSystem, Props};  class ActorExample extends Actor{   def receive = {     case message:String => println(“Message received from “+sender().path.name+” : “+message);     val child = context.actorOf(Props[Actor2],”ChildActor”);     println(“message forwarded to child Actor”);       child ! message ;    // Message forwarded to child actor       case _ => println(“Unknown message”);   } }  class Actor2 extends Actor{   def receive ={     case message:String => println(“Message received from “+sender().path.name+” : “+message);     case _ => println(“Unknown message”);   } }   object ActorExample{   def main(args:Array[String]){     val actorSystem = ActorSystem(“ActorSystem”);     val actor = actorSystem.actorOf(Props[ActorExample], “RootActor”);     actor ! “Hello”   } } 

Output:

Message received from deadLetters : Hello message forwarded to child Actor Message received from RootActor : Hello

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