Akka `sender` discussion

sender_test.scala

package com.rightster

import akka.actor.{Props, Actor, ActorSystem}

/**
 * The output of this code is
 *
 * Message 1 sent
 * Message 2 sent
 * Sender 1 sends you a message
 * akka://my-system/user/sender1
 * Sender 2 sends you a message
 * akka://my-system/user/sender2
 *
 * which means that the sender will hold the value you expect and no need to save it at the beginning of processing the
 * message
 *
 */
object Test extends App {

  val system = ActorSystem("my-system")

  val sender1 = system.actorOf(Props[MySender], "sender1")
  val sender2 = system.actorOf(Props[MySender], "sender2")

  val actor = system.actorOf(Props[MyActor])

  actor.tell("Sender 1 sends you a message", sender1)
  println("Message 1 sent")
  actor.tell("Sender 2 sends you a message", sender2)
  println("Message 2 sent")

}

class MyActor extends Actor {

  def receive = {
    case x: String => {
      Thread.sleep(1000)
      println(x)
      Thread.sleep(1000)
      println(sender().path)
    }
  }

}

class MySender extends Actor {
  def receive = {
    case _ => println("do nothing")
  }
}