Hi Guys,
In the following simple file copy code:
object TestStreams extends App {
implicit val system = ActorSystem("akka-stream")
implicit val materializer = ActorMaterializer()
val source = SynchronousFileSource(new
File(“/path/to/non/existing/file"))
val sink = SynchronousFileSink(new File(“/some/other/path"))
val futureResult = source.runWith(sink)
val result = Await.result(f, Duration.Inf)
println(result)
system.shutdown()
}
Why is the “futureResult” equal to Success(0) while the stream has certainly
failed and the following exception has been logged?
[ERROR] [09/24/2015 18:54:49.634]
[akka-stream-akka.stream.default-file-io-dispatcher-7]
[akka://akka-stream/user/$a/flow-1-1-synchronousFileSink] Tearing down
SynchronousFileSink(/some/other/path) due to upstream error
java.io.FileNotFoundException: /path/to/non/existing/file (No such file or
directory)
at java.io.RandomAccessFile.open0(Native Method)
at java.io.RandomAccessFile.open(RandomAccessFile.java:316)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:243)
at
akka.stream.impl.io.SynchronousFilePublisher.preStart(SynchronousFilePublisher.scala:49)
at akka.actor.Actor$class.aroundPreStart(Actor.scala:472)
at
akka.stream.impl.io.SynchronousFilePublisher.akka$stream$actor$ActorPublisher$$super$aroundPreStart(SynchronousFilePublisher.scala:33)
at
akka.stream.actor.ActorPublisher$class.aroundPreStart(ActorPublisher.scala:322)
at
akka.stream.impl.io.SynchronousFilePublisher.aroundPreStart(SynchronousFilePublisher.scala:33)
at akka.actor.ActorCell.create(ActorCell.scala:580)
at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:456)
at akka.actor.ActorCell.systemInvoke(ActorCell.scala:478)
at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:263)
at akka.dispatch.Mailbox.run(Mailbox.scala:219)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Thanks,
Drew
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