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No submaterializing inner source when outer stream already canceled (#23723)

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* Do not try to submaterialize inner source when outer stream already cancelled #23656

* Use StreamDetachedException

* Sleep a little

* Updated exception text
This commit is contained in:
Johan Andrén 2017-11-17 12:24:12 +01:00 • committed by Patrik Nordwall
parent edcc2b2d75
commit 6db974b6f4
5 changed files with 29 additions and 20 deletions
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9
akka-stream/src/main/scala/akka/stream/javadsl/Source.scala
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@ -182,13 +182,16 @@ object Source {
/**
* Streams the elements of the given future source once it successfully completes.
* If the future fails the stream is failed.
* If the [[Future]] fails the stream is failed with the exception from the future. If downstream cancels before the
* stream completes the materialized [[Future]] will be failed with a [[StreamDetachedException]].
*/
def fromFutureSource[T, M](future: Future[_ <: Graph[SourceShape[T], M]]): javadsl.Source[T, Future[M]] = new Source(scaladsl.Source.fromFutureSource(future))
/**
* Streams the elements of an asynchronous source once its given `completion` stage completes.
* If the `completion` fails the stream is failed with that exception.
* Streams the elements of an asynchronous source once its given [[CompletionStage]] completes.
* If the [[CompletionStage]] fails the stream is failed with the exception from the future.
* If downstream cancels before the stream completes the materialized [[CompletionStage]] will be failed
* with a [[StreamDetachedException]]
*/
def fromSourceCompletionStage[T, M](completion: CompletionStage[_ <: Graph[SourceShape[T], M]]): javadsl.Source[T, CompletionStage[M]] =
new Source(scaladsl.Source.fromSourceCompletionStage(completion))