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Limit and LimitWeighted operator docs #25468

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Johan Andrén 2020-01-08 16:26:51 +01:00 • committed by GitHub
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7 changed files with 142 additions and 17 deletions
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25
akka-docs/src/test/java/jdocs/stream/operators/sourceorflow/Limit.java Normal file
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/*
* Copyright (C) 2009-2020 Lightbend Inc. <https://www.lightbend.com>
*/
package jdocs.stream.operators.sourceorflow;
import akka.NotUsed;
import akka.actor.typed.ActorSystem;
import akka.stream.javadsl.Sink;
import akka.stream.javadsl.Source;
import java.util.List;
import java.util.concurrent.CompletionStage;
public class Limit {
public void simple() {
ActorSystem<?> system = null;
// #simple
Source<String, NotUsed> untrustedSource = Source.repeat("element");
CompletionStage<List<String>> elements =
untrustedSource.limit(10000).runWith(Sink.seq(), system);
// #simple
}
}

29
akka-docs/src/test/java/jdocs/stream/operators/sourceorflow/LimitWeighted.java Normal file
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/*
* Copyright (C) 2009-2020 Lightbend Inc. <https://www.lightbend.com>
*/
package jdocs.stream.operators.sourceorflow;
import akka.NotUsed;
import akka.actor.typed.ActorSystem;
import akka.stream.javadsl.Source;
import akka.util.ByteString;
import java.util.concurrent.CompletionStage;
public class LimitWeighted {
public void simple() {
ActorSystem<?> system = null;
// #simple
Source<ByteString, NotUsed> untrustedSource = Source.repeat(ByteString.fromString("element"));
CompletionStage<ByteString> allBytes =
untrustedSource
.limitWeighted(
10000, // max bytes
bytes -> (long) bytes.length() // bytes of each chunk
)
.runReduce(ByteString::concat, system);
// #simple
}
}