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!str - 18916 - Source.file and Sink.file

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* Removes `Synchronous` from the names and descriptions of File I/O as it leaks impl details
* Removes the factries for FileSource and FileSink and puts them in Source and Sink respectively
This commit is contained in:
Viktor Klang 2015-11-14 22:42:22 +01:00
parent 7d4304fc6e
commit 20c996fe41
31 changed files with 262 additions and 242 deletions
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17
akka-stream/src/main/scala/akka/stream/scaladsl/Source.scala
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@ -3,13 +3,17 @@
*/
package akka.stream.scaladsl
import java.io.File
import akka.actor.{ ActorRef, Cancellable, Props }
import akka.stream.actor.ActorPublisher
import akka.stream.impl.Stages.{ DefaultAttributes, StageModule }
import akka.stream.impl.StreamLayout.Module
import akka.stream.impl.fusing.GraphStages.TickSource
import akka.stream.impl.io.FileSource
import akka.stream.impl.{ EmptyPublisher, ErrorPublisher, _ }
import akka.stream.{ Outlet, SourceShape, _ }
import akka.util.ByteString
import org.reactivestreams.{ Publisher, Subscriber }
import scala.annotation.tailrec
@ -369,4 +373,17 @@ object Source {
new Source(new AcknowledgeSource(bufferSize, overflowStrategy, DefaultAttributes.acknowledgeSource, shape("AcknowledgeSource")))
}
/**
* Creates a Source from a Files contents.
* Emitted elements are `chunkSize` sized [[akka.util.ByteString]] elements,
* except the final element, which will be up to `chunkSize` in size.
*
* You can configure the default dispatcher for this Source by changing the `akka.stream.blocking-io-dispatcher` or
* set it for a given Source by using [[ActorAttributes]].
*
* It materializes a [[Future]] containing the number of bytes read from the source file upon completion.
*/
def file(f: File, chunkSize: Int = 8192): Source[ByteString, Future[Long]] =
new Source(new FileSource(f, chunkSize, DefaultAttributes.fileSource, shape("FileSource")))
}