value ? is not a member of akka.actor.ActorRef

[Vinicius Carvalho]

Hi, just trying to get actors and play but not getting this error:

package actors

import akka.actor.Actor
import scala.util.Random
import akka.util.Timeout
import akka.util.duration._

class NodeBalancer extends Actor{


def receive = {
case nodeId : Int =>
val r = new Random
val wait = r.nextInt(80) + 20
Thread.sleep(wait)
sender ! ("Node id " + nodeId + " took " + wait + " ms to be
processed")
case _ => println("WTF")
}

}

object NodeBalancer {
implicit val timeout = Timeout(1 second)
}

def index = Action {
val actor = Akka.system.actorOf(Props[NodeBalancer], name ="node
balancer")

Async {
(actor ? 17).mapTo[String].asPromise.map {
response => Ok(response)
}
}
}
I get an error, as ActorRef does not contain the ? method. Really
confused here, thought that ? (ask) was the way to get a future from
an actor.

Regards

[Nilanjan]

You have to import akka.pattern.ask to use '?'. There is a implicit
conversion from ActorRef to AskableActorRef.

Thanks
Nilanjan

On May 9, 8:58 pm, Vinicius Carvalho <viniciusccarva...@gmail.com>
wrote:

[Depanker Sharma]

Thanks, worked for me