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Align lazy and future operators #26446

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Johan Andrén 2019-10-16 17:02:12 +02:00 • committed by GitHub
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commit 74adecb4e7
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59 changed files with 2091 additions and 384 deletions
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44
akka-docs/src/test/java/jdocs/stream/operators/flow/FutureFlow.java Normal file
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/*
* Copyright (C) 2009-2019 Lightbend Inc. <https://www.lightbend.com>
*/
package jdocs.stream.operators.flow;
import akka.NotUsed;
import akka.actor.ActorSystem;
import akka.stream.javadsl.Flow;
import akka.stream.javadsl.Source;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionStage;
public class FutureFlow {
private ActorSystem system = null;
// #base-on-first-element
CompletionStage<Flow<Integer, String, NotUsed>> processingFlow(int id) {
return CompletableFuture.completedFuture(
Flow.of(Integer.class).map(n -> "id: " + id + " value: " + n));
}
// #base-on-first-element
public void compileOnlyBaseOnFirst() {
// #base-on-first-element
Source<String, NotUsed> source =
Source.range(1, 10)
.prefixAndTail(1)
.flatMapConcat(
(pair) -> {
List<Integer> head = pair.first();
Source<Integer, NotUsed> tail = pair.second();
int id = head.get(0);
return tail.via(Flow.completionStageFlow(processingFlow(id)));
});
// #base-on-first-element
}
}