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Reactive Extensions for Java
/**
* 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.internal.operators.maybe;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicReference;
import org.reactivestreams.*;
import io.reactivex.*;
import io.reactivex.disposables.Disposable;
import io.reactivex.internal.disposables.DisposableHelper;
import io.reactivex.internal.subscriptions.SubscriptionHelper;
import io.reactivex.plugins.RxJavaPlugins;
/**
* Switches to the fallback Maybe if the other Publisher signals a success or completes, or
* signals TimeoutException if fallback is null.
*
* @param the main value type
* @param the other value type
*/
public final class MaybeTimeoutPublisher extends AbstractMaybeWithUpstream {
final Publisher other;
final MaybeSource extends T> fallback;
public MaybeTimeoutPublisher(MaybeSource source, Publisher other, MaybeSource extends T> fallback) {
super(source);
this.other = other;
this.fallback = fallback;
}
@Override
protected void subscribeActual(MaybeObserver super T> observer) {
TimeoutMainMaybeObserver parent = new TimeoutMainMaybeObserver(observer, fallback);
observer.onSubscribe(parent);
other.subscribe(parent.other);
source.subscribe(parent);
}
static final class TimeoutMainMaybeObserver
extends AtomicReference
implements MaybeObserver, Disposable {
private static final long serialVersionUID = -5955289211445418871L;
final MaybeObserver super T> downstream;
final TimeoutOtherMaybeObserver other;
final MaybeSource extends T> fallback;
final TimeoutFallbackMaybeObserver otherObserver;
TimeoutMainMaybeObserver(MaybeObserver super T> actual, MaybeSource extends T> fallback) {
this.downstream = actual;
this.other = new TimeoutOtherMaybeObserver(this);
this.fallback = fallback;
this.otherObserver = fallback != null ? new TimeoutFallbackMaybeObserver(actual) : null;
}
@Override
public void dispose() {
DisposableHelper.dispose(this);
SubscriptionHelper.cancel(other);
TimeoutFallbackMaybeObserver oo = otherObserver;
if (oo != null) {
DisposableHelper.dispose(oo);
}
}
@Override
public boolean isDisposed() {
return DisposableHelper.isDisposed(get());
}
@Override
public void onSubscribe(Disposable d) {
DisposableHelper.setOnce(this, d);
}
@Override
public void onSuccess(T value) {
SubscriptionHelper.cancel(other);
if (getAndSet(DisposableHelper.DISPOSED) != DisposableHelper.DISPOSED) {
downstream.onSuccess(value);
}
}
@Override
public void onError(Throwable e) {
SubscriptionHelper.cancel(other);
if (getAndSet(DisposableHelper.DISPOSED) != DisposableHelper.DISPOSED) {
downstream.onError(e);
} else {
RxJavaPlugins.onError(e);
}
}
@Override
public void onComplete() {
SubscriptionHelper.cancel(other);
if (getAndSet(DisposableHelper.DISPOSED) != DisposableHelper.DISPOSED) {
downstream.onComplete();
}
}
public void otherError(Throwable e) {
if (DisposableHelper.dispose(this)) {
downstream.onError(e);
} else {
RxJavaPlugins.onError(e);
}
}
public void otherComplete() {
if (DisposableHelper.dispose(this)) {
if (fallback == null) {
downstream.onError(new TimeoutException());
} else {
fallback.subscribe(otherObserver);
}
}
}
}
static final class TimeoutOtherMaybeObserver
extends AtomicReference
implements FlowableSubscriber
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