Actually, never mind the last code block. I forgot you set up
OneByOneRequestStrategy, which will constantly demand from upstream.
On Wednesday, February 18, 2015 at 11:27:46 PM UTC+6, folex wrote:
>
> class ActorPubSub extends ActorSubscriber with ActorPublisher[Int] {
> var events = Seq.empty[Int]
>
> override protected def requestStrategy: RequestStrategy =
> OneByOneRequestStrategy
> override def receive: Actor.Receive = {
> case OnNext(e: Int) => events = e +: events
> case Request(cnt) => events.take(cnt.toInt).foreach(onNext)
> }
> }
>
> val pubsubRef = system.actorOf(Props(new ActorPubSub))
> val pub = ActorPublisher[Int](pubsubRef)
> val sub = ActorSubscriber[Int](pubsubRef)
> val pubsubFlow = Flow(Sink(sub), Source(pub))
>
> FlowGraph { implicit b =>
> import akka.stream.scaladsl.FlowGraphImplicits._
>
> Source((1 to 10).toList) ~> pubsubFlow ~> Sink.foreach[Int](e =>
> println("Got a number " + e)
> )
> }.run()
>
>
>
> According to Flow.apply(Sink, Source) doc:
>
> Create a Flow from a seemingly disconnected Source and Sink pair.
>
>
> If that's true, why graph remains unconnected?
>
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