Akka/Scala example source code file (LookupApplication.scala)

This example Akka source code file (LookupApplication.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Akka and Scala source code examples by using tags.

All credit for the original source code belongs to akka.io; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Akka tags/keywords

actor, actorsystem, akka, array, calculator, calculatorsystem, concurrent, duration, lookup, lookupapplication, lookupsystem, remote, started, time, unit

The LookupApplication.scala Akka example source code

package sample.remote.calculator

import scala.concurrent.duration._
import scala.util.Random
import com.typesafe.config.ConfigFactory
import akka.actor.ActorSystem
import akka.actor.Props

object LookupApplication {
  def main(args: Array[String]): Unit = {
    if (args.isEmpty || args.head == "Calculator")
      startRemoteCalculatorSystem()
    if (args.isEmpty || args.head == "Lookup")
      startRemoteLookupSystem()
  }

  def startRemoteCalculatorSystem(): Unit = {
    val system = ActorSystem("CalculatorSystem",
      ConfigFactory.load("calculator"))
    system.actorOf(Props[CalculatorActor], "calculator")

    println("Started CalculatorSystem - waiting for messages")
  }

  def startRemoteLookupSystem(): Unit = {
    val system =
      ActorSystem("LookupSystem", ConfigFactory.load("remotelookup"))
    val remotePath =
      "akka.tcp://CalculatorSystem@127.0.0.1:2552/user/calculator"
    val actor = system.actorOf(Props(classOf[LookupActor], remotePath), "lookupActor")

    println("Started LookupSystem")
    import system.dispatcher
    system.scheduler.schedule(1.second, 1.second) {
      if (Random.nextInt(100) % 2 == 0)
        actor ! Add(Random.nextInt(100), Random.nextInt(100))
      else
        actor ! Subtract(Random.nextInt(100), Random.nextInt(100))
    }
  }
}