interleaveAll

Emits a specifiable number of elements from the original source, then from the provided sources and repeats.

Fan-in operators

Signature

Source.interleaveAllSource.interleaveAll Flow.interleaveAllFlow.interleaveAll

Description

Emits a specifiable number of elements from the original source, then from the provided sources and repeats. If one source completes the rest of the other stream will be emitted when eagerClose is false, otherwise the flow is complete.

Example

Scala

copysourceval sourceA = Source(List(1, 2, 7, 8))
val sourceB = Source(List(3, 4, 9))
val sourceC = Source(List(5, 6))

sourceA
  .interleaveAll(List(sourceB, sourceC), 2, eagerClose = false)
  .fold(new StringJoiner(","))((joiner, input) => joiner.add(String.valueOf(input)))
  .runWith(Sink.foreach(println))
// prints 1,2,3,4,5,6,7,8,9

Java

copysourceimport org.apache.pekko.stream.javadsl.Keep;
import org.apache.pekko.stream.javadsl.Source;
import org.apache.pekko.stream.javadsl.Sink;

import java.util.*;

Source<Integer, NotUsed> sourceA = Source.from(Arrays.asList(1, 2, 7, 8));
Source<Integer, NotUsed> sourceB = Source.from(Arrays.asList(3, 4, 9));
Source<Integer, NotUsed> sourceC = Source.from(Arrays.asList(5, 6));
sourceA
    .interleaveAll(Arrays.asList(sourceB, sourceC), 2, false)
    .fold(new StringJoiner(","), (joiner, input) -> joiner.add(String.valueOf(input)))
    .runForeach(System.out::println, system);
// prints 1,2,3,4,5,6,7,8,9

Reactive Streams semantics