Hi everyone!
I am trying to create a stream with an ActorPublisher:
class SourceActor extends ActorPublisher[List[Int]] {
import akka.stream.actor.ActorPublisherMessage.Request
var list = List.range(1, 21).grouped(5).toList // for example
def receive = {
case Request(elems) => while (totalDemand > 0 && isActive) {
list match {
case Nil =>
onComplete()
self ! PoisonPill
case head :: tail =>
list = tail
onNext(head)
}
}
}
}
val sourceActor = system.actorOf(Props[SourceActor])
val source = Source(ActorPublisher[List[Int]](sourceActor))
val out = ForeachSink(println)
source.mapConcat{x => x}.runWith(out)
I expect to see numbers from 1 to 20, but random printed from 1 to 17~19
As I understand, it occur due to the stream complete before all elements
are processed. How can I implement an ActorPublisher properly and escape
this problem?
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