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#19440 replace Scala Future usage with CompletionStage in javadsl

Browse source 
This entails:

  * adding akka.pattern.PatternCS.* to enable ask etc. with
    CompletionStage
  * changing RequestContext to offer an ExecutionContextExecutor for the
    CompletionStage.*Async combinators
  * splitting up akka.stream.Queue for JavaDSL consistency
This commit is contained in:
Roland Kuhn 2016-01-21 16:37:26 +01:00
parent 396f4370e9
commit 4c72495581
118 changed files with 1646 additions and 1379 deletions
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25
akka-docs/rst/java/code/docs/stream/StreamPartialFlowGraphDocTest.java
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@ -6,6 +6,7 @@ package docs.stream;
import static org.junit.Assert.assertEquals;
import java.util.*;
import java.util.concurrent.CompletionStage;
import java.util.concurrent.TimeUnit;
import akka.Done;
@ -58,10 +59,10 @@ public class StreamPartialFlowGraphDocTest {
new Inlet[] {zip1.in0(), zip1.in1(), zip2.in1()});
});
final Sink<Integer, Future<Integer>> resultSink = Sink.<Integer>head();
final Sink<Integer, CompletionStage<Integer>> resultSink = Sink.<Integer>head();
final RunnableGraph<Future<Integer>> g =
RunnableGraph.<Future<Integer>>fromGraph(
final RunnableGraph<CompletionStage<Integer>> g =
RunnableGraph.<CompletionStage<Integer>>fromGraph(
GraphDSL.create(resultSink, (builder, sink) -> {
// import the partial flow graph explicitly
final UniformFanInShape<Integer, Integer> pm = builder.add(pickMaxOfThree);
@ -73,9 +74,9 @@ public class StreamPartialFlowGraphDocTest {
return ClosedShape.getInstance();
}));
final Future<Integer> max = g.run(mat);
final CompletionStage<Integer> max = g.run(mat);
//#simple-partial-flow-graph
assertEquals(Integer.valueOf(3), Await.result(max, Duration.create(3, TimeUnit.SECONDS)));
assertEquals(Integer.valueOf(3), max.toCompletableFuture().get(3, TimeUnit.SECONDS));
}
//#source-from-partial-flow-graph
@ -110,10 +111,10 @@ public class StreamPartialFlowGraphDocTest {
return SourceShape.of(zip.out());
}));
final Future<Pair<Integer, Integer>> firstPair =
final CompletionStage<Pair<Integer, Integer>> firstPair =
pairs.runWith(Sink.<Pair<Integer, Integer>>head(), mat);
//#source-from-partial-flow-graph
assertEquals(new Pair<>(0, 1), Await.result(firstPair, Duration.create(3, TimeUnit.SECONDS)));
assertEquals(new Pair<>(0, 1), firstPair.toCompletableFuture().get(3, TimeUnit.SECONDS));
}
@Test
@ -132,12 +133,12 @@ public class StreamPartialFlowGraphDocTest {
}));
//#flow-from-partial-flow-graph
final Future<Pair<Integer, String>> matSink =
final CompletionStage<Pair<Integer, String>> matSink =
//#flow-from-partial-flow-graph
Source.single(1).via(pairs).runWith(Sink.<Pair<Integer, String>>head(), mat);
//#flow-from-partial-flow-graph
assertEquals(new Pair<>(1, "1"), Await.result(matSink, Duration.create(3, TimeUnit.SECONDS)));
assertEquals(new Pair<>(1, "1"), matSink.toCompletableFuture().get(3, TimeUnit.SECONDS));
}
@ -150,12 +151,12 @@ public class StreamPartialFlowGraphDocTest {
final Source<Integer, NotUsed> sources = Source.combine(source1, source2, new ArrayList<>(),
i -> Merge.<Integer>create(i));
//#source-combine
final Future<Integer> result=
final CompletionStage<Integer> result=
//#source-combine
sources.runWith(Sink.<Integer, Integer>fold(0, (a,b) -> a + b), mat);
//#source-combine
assertEquals(Integer.valueOf(3), Await.result(result, Duration.create(3, TimeUnit.SECONDS)));
assertEquals(Integer.valueOf(3), result.toCompletableFuture().get(3, TimeUnit.SECONDS));
}
@Test
@ -165,7 +166,7 @@ public class StreamPartialFlowGraphDocTest {
//#sink-combine
Sink<Integer, NotUsed> sendRemotely = Sink.actorRef(actorRef, "Done");
Sink<Integer, Future<Done>> localProcessing = Sink.<Integer>foreach(a -> { /*do something useful*/ } );
Sink<Integer, CompletionStage<Done>> localProcessing = Sink.<Integer>foreach(a -> { /*do something useful*/ } );
Sink<Integer, NotUsed> sinks = Sink.combine(sendRemotely,localProcessing, new ArrayList<>(), a -> Broadcast.create(a));
Source.<Integer>from(Arrays.asList(new Integer[]{0, 1, 2})).runWith(sinks, mat);