rx.internal.operators.CompletableOnSubscribeMergeDelayErrorArray Maven / Gradle / Ivy
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/**
* Copyright 2014 Netflix, Inc.
*
* 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 rx.internal.operators;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicInteger;
import rx.*;
import rx.Completable.OnSubscribe;
import rx.subscriptions.CompositeSubscription;
public final class CompletableOnSubscribeMergeDelayErrorArray implements OnSubscribe {
final Completable[] sources;
public CompletableOnSubscribeMergeDelayErrorArray(Completable[] sources) {
this.sources = sources;
}
@Override
public void call(final CompletableSubscriber s) {
final CompositeSubscription set = new CompositeSubscription();
final AtomicInteger wip = new AtomicInteger(sources.length + 1);
final Queue q = new ConcurrentLinkedQueue();
s.onSubscribe(set);
for (Completable c : sources) {
if (set.isUnsubscribed()) {
return;
}
if (c == null) {
q.offer(new NullPointerException("A completable source is null"));
wip.decrementAndGet();
continue;
}
c.unsafeSubscribe(new CompletableSubscriber() {
@Override
public void onSubscribe(Subscription d) {
set.add(d);
}
@Override
public void onError(Throwable e) {
q.offer(e);
tryTerminate();
}
@Override
public void onCompleted() {
tryTerminate();
}
void tryTerminate() {
if (wip.decrementAndGet() == 0) {
if (q.isEmpty()) {
s.onCompleted();
} else {
s.onError(CompletableOnSubscribeMerge.collectErrors(q));
}
}
}
});
}
if (wip.decrementAndGet() == 0) {
if (q.isEmpty()) {
s.onCompleted();
} else {
s.onError(CompletableOnSubscribeMerge.collectErrors(q));
}
}
}
}