Package akka.http.impl.util
Class StreamUtils$
java.lang.Object
akka.http.impl.util.StreamUtils$
INTERNAL API
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Field Summary
Modifier and TypeFieldDescriptionstatic final StreamUtils$
Static reference to the singleton instance of this Scala object. -
Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionakka.stream.stage.GraphStage<akka.stream.FlowShape<akka.util.ByteString,
akka.util.ByteString>> byteStringTransformer
(scala.Function1<akka.util.ByteString, akka.util.ByteString> f, scala.Function0<akka.util.ByteString> finish) Creates a transformer that will callf
for each incoming ByteString and output its result.void
cancelSource
(akka.stream.scaladsl.Source<?, ?> source, akka.stream.Materializer materializer) Tries to guess whether a source needs to cancelled and how.<T,
Mat> scala.Tuple4<akka.stream.scaladsl.Source<T, Mat>, scala.concurrent.Future<scala.runtime.BoxedUnit>, scala.concurrent.Future<scala.runtime.BoxedUnit>, akka.stream.KillSwitch> captureMaterializationTerminationAndKillSwitch
(akka.stream.scaladsl.Source<T, Mat> source) <T,
Mat> scala.Tuple2<akka.stream.scaladsl.Source<T, Mat>, scala.concurrent.Future<scala.runtime.BoxedUnit>> captureTermination
(akka.stream.scaladsl.Source<T, Mat> source) <T> akka.stream.scaladsl.Flow<T,
T, akka.NotUsed> delayCancellation
(scala.concurrent.duration.Duration cancelAfter) INTERNAL API<T> akka.stream.scaladsl.Flow<T,
T, akka.NotUsed> encodeErrorAndComplete
(scala.Function1<Throwable, T> f) akka.stream.stage.GraphStage<akka.stream.FlowShape<akka.util.ByteString,
akka.util.ByteString>> limitByteChunksStage
(int maxBytesPerChunk) akka.stream.Materializer
Dummy name to signify that the caller asserts that cancelSource is only run from within a GraphInterpreter contextakka.stream.scaladsl.Flow<akka.util.ByteString,
akka.util.ByteString, akka.NotUsed> sliceBytesTransformer
(long start, long length) <T,
U> akka.stream.scaladsl.Flow<T, U, akka.NotUsed> statefulAttrsMap
(scala.Function1<akka.stream.Attributes, scala.Function1<T, U>> functionConstructor) Lifts the streams attributes into an element and passes them to the function for each passed through element.<T,
U> akka.stream.scaladsl.Flow<T, U, akka.NotUsed> statefulMap
(scala.Function0<scala.Function1<T, U>> functionConstructor) Similar idea thanFlowOps.statefulMapConcat
but for a simple map.<T extends HttpEntity,
M>
scala.Tuple2<T,M> transformEntityStream
(T entity, StreamUtils.EntityStreamOp<M> streamOp)
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Field Details
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MODULE$
Static reference to the singleton instance of this Scala object.
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Constructor Details
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StreamUtils$
public StreamUtils$()
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Method Details
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byteStringTransformer
public akka.stream.stage.GraphStage<akka.stream.FlowShape<akka.util.ByteString,akka.util.ByteString>> byteStringTransformer(scala.Function1<akka.util.ByteString, akka.util.ByteString> f, scala.Function0<akka.util.ByteString> finish) Creates a transformer that will callf
for each incoming ByteString and output its result. After the complete input has been read it will callfinish
once to determine the final ByteString to post to the output. Empty ByteStrings are discarded.- Parameters:
f
- (undocumented)finish
- (undocumented)- Returns:
- (undocumented)
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captureTermination
public <T,Mat> scala.Tuple2<akka.stream.scaladsl.Source<T,Mat>, captureTerminationscala.concurrent.Future<scala.runtime.BoxedUnit>> (akka.stream.scaladsl.Source<T, Mat> source) -
captureMaterializationTerminationAndKillSwitch
public <T,Mat> scala.Tuple4<akka.stream.scaladsl.Source<T,Mat>, captureMaterializationTerminationAndKillSwitchscala.concurrent.Future<scala.runtime.BoxedUnit>, scala.concurrent.Future<scala.runtime.BoxedUnit>, akka.stream.KillSwitch> (akka.stream.scaladsl.Source<T, Mat> source) -
sliceBytesTransformer
public akka.stream.scaladsl.Flow<akka.util.ByteString,akka.util.ByteString, sliceBytesTransformerakka.NotUsed> (long start, long length) -
limitByteChunksStage
public akka.stream.stage.GraphStage<akka.stream.FlowShape<akka.util.ByteString,akka.util.ByteString>> limitByteChunksStage(int maxBytesPerChunk) -
delayCancellation
public <T> akka.stream.scaladsl.Flow<T,T, delayCancellationakka.NotUsed> (scala.concurrent.duration.Duration cancelAfter) INTERNAL APIReturns a flow that is almost identity but delays propagation of cancellation from downstream to upstream.
- Parameters:
cancelAfter
- (undocumented)- Returns:
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statefulMap
public <T,U> akka.stream.scaladsl.Flow<T,U, statefulMapakka.NotUsed> (scala.Function0<scala.Function1<T, U>> functionConstructor) Similar idea thanFlowOps.statefulMapConcat
but for a simple map.- Parameters:
functionConstructor
- (undocumented)- Returns:
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statefulAttrsMap
public <T,U> akka.stream.scaladsl.Flow<T,U, statefulAttrsMapakka.NotUsed> (scala.Function1<akka.stream.Attributes, scala.Function1<T, U>> functionConstructor) Lifts the streams attributes into an element and passes them to the function for each passed through element. Similar idea thanFlowOps.statefulMapConcat
but for a simple map.The result of
Attributes => (T => U)
is cached, and only theT => U
function will be invoked afterwards for each element.- Parameters:
functionConstructor
- (undocumented)- Returns:
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OnlyRunInGraphInterpreterContext
public akka.stream.Materializer OnlyRunInGraphInterpreterContext()Dummy name to signify that the caller asserts that cancelSource is only run from within a GraphInterpreter context -
cancelSource
public void cancelSource(akka.stream.scaladsl.Source<?, ?> source, akka.stream.Materializer materializer) Tries to guess whether a source needs to cancelled and how. In the best case no materialization should be needed.- Parameters:
source
- (undocumented)materializer
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transformEntityStream
public <T extends HttpEntity,M> scala.Tuple2<T,M> transformEntityStream(T entity, StreamUtils.EntityStreamOp<M> streamOp) -
encodeErrorAndComplete
public <T> akka.stream.scaladsl.Flow<T,T, encodeErrorAndCompleteakka.NotUsed> (scala.Function1<Throwable, T> f)
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