I do it just via ActorPublisher, the "scroll" method is basically
asynchronously loading elasticsearch records (classic cursor thingy). It's
a combination of request demand and asynchronous source of events :
def receive: Receive = {
case Request(n) if totalDemand > 0 && n > 0 && isActive =>
def pushRecursively(n: Long = Math.min(n, totalDemand), scrollId: String
= lastScrollId): Future[Unit] = {
scroll(scrollId) flatMap {
case (sid, recs) if recs.isEmpty => // empty hits means end of
scanning/scrolling
onComplete()
context.stop(self)
Future.successful(())
case (sid, recs) =>
lastScrollId = sid
val contexts = recs.map {
case (recId, rec) => EsResource :: Map.empty[String, String] ::
recId :: rec :: HNil
}
onNext(contexts)
if (n > 1)
pushRecursively(n-1, sid)
else
Future.successful(())
}
}
pushRecursively() onComplete {
case Failure(ex) =>
onError(ex)
context.stop(self)
case s =>
}
case Cancel =>
context.stop(self)
}
}
--
>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
---
You received this message because you are subscribed to the Google Groups "Akka
User List" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/akka-user.
For more options, visit https://groups.google.com/d/optout.
