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+doc #19429 initial merge of docs-dev and docs

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Konrad Malawski 2016-01-13 16:25:24 +01:00
parent be0c8af4c0
commit 5a18d43435
501 changed files with 9876 additions and 3681 deletions
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akka-docs-dev/rst/scala/code/docs/stream/cookbook/RecipeSimpleDrop.scala
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package docs.stream.cookbook
import akka.stream.scaladsl.{ Flow, Sink, Source }
import akka.stream.testkit._
import scala.concurrent.duration._
import akka.testkit.TestLatch
import scala.concurrent.Await
class RecipeSimpleDrop extends RecipeSpec {
"Recipe for simply dropping elements for a faster stream" must {
"work" in {
//#simple-drop
val droppyStream: Flow[Message, Message, Unit] =
Flow[Message].conflate(seed = identity)((lastMessage, newMessage) => newMessage)
//#simple-drop
val latch = TestLatch(2)
val realDroppyStream =
Flow[Message].conflate(seed = identity)((lastMessage, newMessage) => { latch.countDown(); newMessage })
val pub = TestPublisher.probe[Message]()
val sub = TestSubscriber.manualProbe[Message]()
val messageSource = Source.fromPublisher(pub)
val sink = Sink.fromSubscriber(sub)
messageSource.via(realDroppyStream).to(sink).run()
val subscription = sub.expectSubscription()
sub.expectNoMsg(100.millis)
pub.sendNext("1")
pub.sendNext("2")
pub.sendNext("3")
Await.ready(latch, 1.second)
subscription.request(1)
sub.expectNext("3")
pub.sendComplete()
subscription.request(1)
sub.expectComplete()
}
}
}