Simple Kotlin Akka example (local and remote)

AkkaExample.kt

import akka.actor.AbstractActor
import akka.actor.ActorRef
import akka.actor.ActorSystem
import akka.actor.Props
import com.typesafe.config.Config
import com.typesafe.config.ConfigFactory

class Worker : AbstractActor() {
    override fun createReceive(): Receive? {
        return receiveBuilder()
                .matchAny { msg -> println(msg) }
                .build()
    }
}

fun main(args: Array<String>) {

    val actorSystemName = "ExampleActorSystem"
    val actorName = "workerActor"
    val localMsgs = listOf("Hello World!", "Another message.", "Good bye!")
    val remoteMsgs = listOf("Hello Universe!", "Another message to all aliens.", "Good luck!")

    // Create the actor system
    val system = ActorSystem.create(actorSystemName)

    // Local actor
    val localWorkerActorRef = system.actorOf(Props.create(Worker::class.java), actorName)
    localMsgs.forEach { msg -> localWorkerActorRef.tell(msg, ActorRef.noSender()) }

    // Remote example, see application.conf for configuration
    val config: Config = ConfigFactory.load()
    val remoteHost: String = config.getString("akka.remote.netty.tcp.hostname")
    val remotePort: Int = config.getInt("akka.remote.netty.tcp.port")
    val remoteWorkerActorRef = system.actorSelection("akka.tcp://$actorSystemName@$remoteHost:$remotePort/user/$actorName")
    remoteMsgs.forEach { msg -> remoteWorkerActorRef.tell(msg, ActorRef.noSender()) }

    // Terminate the actor system
    system.terminate()

}

application.conf

akka {

  actor {
    provider = remote
  }

  remote {
    enabled-transports = ["akka.remote.netty.tcp"]
    netty.tcp {
      hostname = "127.0.0.1"
      port = 9005
    }
  }

}