/*
* Copyright (c) 2011-2017 Pivotal Software Inc, All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package reactor.core.publisher;
import org.reactivestreams.
Publisher;
import reactor.core.
CoreSubscriber;
/**
* Wraps multiple Publishers into a ParallelFlux which runs them
* in parallel.
*
* @param <T> the value type
*/
final class
ParallelArraySource<T> extends
ParallelFlux<T> implements
SourceProducer<T> {
final
Publisher<T>[]
sources;
ParallelArraySource(
Publisher<T>[]
sources) {
//noinspection ConstantConditions
if (
sources == null ||
sources.length == 0) {
throw new
IllegalArgumentException("Zero publishers not supported");
}
this.
sources =
sources;
}
@
Override
public int
parallelism() {
return
sources.length;
}
@
Override
public void
subscribe(
CoreSubscriber<? super T>[]
subscribers) {
if (!
validate(
subscribers)) {
return;
}
int
n =
subscribers.length;
for (int
i = 0;
i <
n;
i++) {
Flux.
from(
sources[
i]).
subscribe(
subscribers[
i]);
}
}
}