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trait Timeout extends AnyRef

This trait is used to provide a non-blocking timeout on an operation that returns a Future.

Please note that the play.api.Application default ActorSystem should be used as input here, as the actorSystem.scheduler is responsible for scheduling the timeout, using akka.pattern.actor under the hood.

You can dependency inject the ActorSystem as follows to create a Future that will timeout after a certain period of time:

class MyService(val actorSystem: ActorSystem) extends Timeout {

  def calculateWithTimeout(timeoutDuration: FiniteDuration): Future[Int] = {
    timeout(actorSystem, timeoutDuration)(rawCalculation())
  }

  def rawCalculation(): Future[Int] = {
    import akka.pattern.after
    implicit val ec = actorSystem.dispatcher
    akka.pattern.after(300 millis, actorSystem.scheduler)(Future(42))(actorSystem.dispatcher)
  }
}

You should check for timeout by using Future.recover() or Future.recoverWith() and checking for TimeoutException:

val future = myService.calculateWithTimeout(100 millis).recover {
  case _: TimeoutException =>
    -1
}
Annotations
@deprecated
Deprecated

(Since version 2.6.0) Use play.api.libs.concurrent.Futures.timeout

Source
Timeout.scala
See also

Futures and Promises

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Timeout
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  16. def timeout[A](actorSystem: ActorSystem, timeoutDuration: FiniteDuration)(f: Future[A]): Future[A]

    Creates a future which will resolve to a timeout exception if the given Future has not successfully completed within timeoutDuration.

    Creates a future which will resolve to a timeout exception if the given Future has not successfully completed within timeoutDuration.

    Note that timeout is not the same as cancellation. Even in case of timeout, the given future will still complete, even though that completed value is not returned.

    A

    the result type used in the Future.

    actorSystem

    the application's actor system.

    timeoutDuration

    the duration after which a Future.failed(TimeoutException) should be thrown.

    f

    a call by value Future[A]

    returns

    the future that completes first, either the failed future, or the operation.

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