pekko/akka-docs/src/test/java/jdocs/stream/SinkRecipeDocTest.java

/*
 * Copyright (C) 2018-2019 Lightbend Inc. <https://www.lightbend.com>
 */

package jdocs.stream;

import akka.NotUsed;
import akka.actor.ActorSystem;
import akka.japi.function.Function;
import akka.stream.ActorMaterializer;
import akka.stream.Materializer;
import akka.stream.javadsl.Source;
import akka.stream.javadsl.Sink;
import jdocs.AbstractJavaTest;
import org.junit.BeforeClass;
import org.junit.Test;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionStage;

public class SinkRecipeDocTest extends AbstractJavaTest {
    static ActorSystem system;
    static Materializer mat;

    @BeforeClass
    public static void setup() {
        system = ActorSystem.create("SinkRecipeDocTest");
        mat = ActorMaterializer.create(system);
    }

    @Test
    public void foreachAsync() {
        final Function<Integer, CompletionStage<Void>> asyncProcessing = param -> CompletableFuture.completedFuture(param).thenAccept(System.out::println);

        //#forseachAsync-processing
        //final Function<Integer, CompletionStage<Void>> asyncProcessing = _

        final Source<Integer, NotUsed> numberSource = Source.range(1, 100);

        numberSource
            .runWith(Sink.foreachAsync(10, asyncProcessing), mat);
        //#forseachAsync-processing
    }
}