问Scala -超时重试HTTP请求

EN

import akka.pattern.{ask, pipe, retry}
import akka.actor.{Actor, ActorSystem, Props, Scheduler}
import akka.util.Timeout
import scala.concurrent.duration._
import scala.concurrent.{Await, ExecutionContext, Future}

class ClientActor extends Actor { //actor which times out 2 times and succeeds 3rd time

    var attempts = 0

    def receive = {
      case "request" =>
        this.attempts = attempts + 1
        if (attempts < 3) {
          Thread.sleep(2000)
          Future.failed(new Exception("timed out")) pipeTo sender
        } else {
          Thread.sleep(500)
          Future.successful(s"Successful in $attempts attempt") pipeTo sender
        }
        println(s"Attempt: $attempts")
    }
}


val system = ActorSystem("system") //actor system and needed implicits
implicit val ec: ExecutionContext = system.dispatcher 
implicit val timeout: Timeout = Timeout(1 seconds)
implicit val scheduler: Scheduler = system.scheduler


val client = system.actorOf(Props[ClientActor], "client-actor")

val future = retry(() => client ? "request", 3, 1 second) //create future which would retry 3 times

println(Await.result(future, 10 seconds)) //Would write "Successful in 3 attempt"