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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
/*
* Copyright (c) 2016-present, RxJava Contributors.
*
* 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 io.reactivex.rxjava3.internal.observers;
import java.util.concurrent.CountDownLatch;
import io.reactivex.rxjava3.annotations.NonNull;
import io.reactivex.rxjava3.core.*;
import io.reactivex.rxjava3.disposables.Disposable;
import io.reactivex.rxjava3.internal.disposables.*;
import io.reactivex.rxjava3.internal.util.BlockingHelper;
/**
* Blocks until the upstream terminates and dispatches the outcome to
* the actual observer.
*
* @param the element type of the source
* @since 3.0.0
*/
public final class BlockingDisposableMultiObserver
extends CountDownLatch
implements MaybeObserver, SingleObserver, CompletableObserver, Disposable {
T value;
Throwable error;
final SequentialDisposable upstream;
public BlockingDisposableMultiObserver() {
super(1);
upstream = new SequentialDisposable();
}
@Override
public void dispose() {
upstream.dispose();
countDown();
}
@Override
public boolean isDisposed() {
return upstream.isDisposed();
}
@Override
public void onSubscribe(@NonNull Disposable d) {
DisposableHelper.setOnce(upstream, d);
}
@Override
public void onSuccess(@NonNull T t) {
this.value = t;
upstream.lazySet(Disposable.disposed());
countDown();
}
@Override
public void onError(@NonNull Throwable e) {
this.error = e;
upstream.lazySet(Disposable.disposed());
countDown();
}
@Override
public void onComplete() {
upstream.lazySet(Disposable.disposed());
countDown();
}
public void blockingConsume(CompletableObserver observer) {
if (getCount() != 0) {
try {
BlockingHelper.verifyNonBlocking();
await();
} catch (InterruptedException ex) {
dispose();
observer.onError(ex);
return;
}
}
if (isDisposed()) {
return;
}
Throwable ex = error;
if (ex != null) {
observer.onError(ex);
} else {
observer.onComplete();
}
}
public void blockingConsume(SingleObserver super T> observer) {
if (getCount() != 0) {
try {
BlockingHelper.verifyNonBlocking();
await();
} catch (InterruptedException ex) {
dispose();
observer.onError(ex);
return;
}
}
if (isDisposed()) {
return;
}
Throwable ex = error;
if (ex != null) {
observer.onError(ex);
} else {
observer.onSuccess(value);
}
}
public void blockingConsume(MaybeObserver super T> observer) {
if (getCount() != 0) {
try {
BlockingHelper.verifyNonBlocking();
await();
} catch (InterruptedException ex) {
dispose();
observer.onError(ex);
return;
}
}
if (isDisposed()) {
return;
}
Throwable ex = error;
if (ex != null) {
observer.onError(ex);
} else {
T v = value;
if (v == null) {
observer.onComplete();
} else {
observer.onSuccess(v);
}
}
}
}
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