GlobalSettingsとAkkaを使ってplay 2.0でJob（Actor）を定期実行する

Global.scala

import play.api._
import play.api.libs.concurrent.Akka
import akka.actor._
import akka.util.duration._

object Global extends GlobalSettings {
  case class LogMessage()
  
  class DateActor extends Actor {
    def receive = {
      case LogMessage => Logger.info(new java.util.Date().toString)
    }
  }
  
  var actorJob: Cancellable = _
  
  override def onStart(app: Application) {
    Logger.info("Application has started")
    val actorSystem = Akka.system(app)
    val dateActor = actorSystem.actorOf(Props[DateActor], name = "dateactor")
    actorJob = actorSystem.scheduler.schedule(0 seconds, 1 minutes, dateActor, LogMessage)
  }
  
  override def onStop(app: Application) {
    actorJob.cancel()
    Logger.info("Application shutdown...")
  }
}