scala ask pattern example

imports:
import akka.pattern.ask
import akka.util.Timeout
import scala.concurrent.duration._
import scala.util.{Failure, Success}
import scala.concurrent.ExecutionContext.Implicits.global

code:
implicit val _timeout = Timeout(5000.milliseconds)
val f = worker ? DoWork(work)

f.onComplete{
  case Success(result) => log.info("good")
  case Failure(result) => log.info("bad")
}