io.reactivex.internal.operators.observable.ObservableTimeoutTimed Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of rxjava Show documentation
Show all versions of rxjava Show documentation
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.observable;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import io.reactivex.*;
import io.reactivex.disposables.Disposable;
import io.reactivex.internal.disposables.*;
import io.reactivex.plugins.RxJavaPlugins;
import static io.reactivex.internal.util.ExceptionHelper.timeoutMessage;
public final class ObservableTimeoutTimed extends AbstractObservableWithUpstream {
final long timeout;
final TimeUnit unit;
final Scheduler scheduler;
final ObservableSource other;
public ObservableTimeoutTimed(Observable source,
long timeout, TimeUnit unit, Scheduler scheduler, ObservableSource other) {
super(source);
this.timeout = timeout;
this.unit = unit;
this.scheduler = scheduler;
this.other = other;
}
@Override
protected void subscribeActual(Observer observer) {
if (other == null) {
TimeoutObserver parent = new TimeoutObserver(observer, timeout, unit, scheduler.createWorker());
observer.onSubscribe(parent);
parent.startTimeout(0L);
source.subscribe(parent);
} else {
TimeoutFallbackObserver parent = new TimeoutFallbackObserver(observer, timeout, unit, scheduler.createWorker(), other);
observer.onSubscribe(parent);
parent.startTimeout(0L);
source.subscribe(parent);
}
}
static final class TimeoutObserver extends AtomicLong
implements Observer, Disposable, TimeoutSupport {
private static final long serialVersionUID = 3764492702657003550L;
final Observer downstream;
final long timeout;
final TimeUnit unit;
final Scheduler.Worker worker;
final SequentialDisposable task;
final AtomicReference upstream;
TimeoutObserver(Observer actual, long timeout, TimeUnit unit, Scheduler.Worker worker) {
this.downstream = actual;
this.timeout = timeout;
this.unit = unit;
this.worker = worker;
this.task = new SequentialDisposable();
this.upstream = new AtomicReference();
}
@Override
public void onSubscribe(Disposable d) {
DisposableHelper.setOnce(upstream, d);
}
@Override
public void onNext(T t) {
long idx = get();
if (idx == Long.MAX_VALUE || !compareAndSet(idx, idx + 1)) {
return;
}
task.get().dispose();
downstream.onNext(t);
startTimeout(idx + 1);
}
void startTimeout(long nextIndex) {
task.replace(worker.schedule(new TimeoutTask(nextIndex, this), timeout, unit));
}
@Override
public void onError(Throwable t) {
if (getAndSet(Long.MAX_VALUE) != Long.MAX_VALUE) {
task.dispose();
downstream.onError(t);
worker.dispose();
} else {
RxJavaPlugins.onError(t);
}
}
@Override
public void onComplete() {
if (getAndSet(Long.MAX_VALUE) != Long.MAX_VALUE) {
task.dispose();
downstream.onComplete();
worker.dispose();
}
}
@Override
public void onTimeout(long idx) {
if (compareAndSet(idx, Long.MAX_VALUE)) {
DisposableHelper.dispose(upstream);
downstream.onError(new TimeoutException(timeoutMessage(timeout, unit)));
worker.dispose();
}
}
@Override
public void dispose() {
DisposableHelper.dispose(upstream);
worker.dispose();
}
@Override
public boolean isDisposed() {
return DisposableHelper.isDisposed(upstream.get());
}
}
static final class TimeoutTask implements Runnable {
final TimeoutSupport parent;
final long idx;
TimeoutTask(long idx, TimeoutSupport parent) {
this.idx = idx;
this.parent = parent;
}
@Override
public void run() {
parent.onTimeout(idx);
}
}
static final class TimeoutFallbackObserver extends AtomicReference
implements Observer, Disposable, TimeoutSupport {
private static final long serialVersionUID = 3764492702657003550L;
final Observer downstream;
final long timeout;
final TimeUnit unit;
final Scheduler.Worker worker;
final SequentialDisposable task;
final AtomicLong index;
final AtomicReference upstream;
ObservableSource fallback;
TimeoutFallbackObserver(Observer actual, long timeout, TimeUnit unit,
Scheduler.Worker worker, ObservableSource fallback) {
this.downstream = actual;
this.timeout = timeout;
this.unit = unit;
this.worker = worker;
this.fallback = fallback;
this.task = new SequentialDisposable();
this.index = new AtomicLong();
this.upstream = new AtomicReference();
}
@Override
public void onSubscribe(Disposable d) {
DisposableHelper.setOnce(upstream, d);
}
@Override
public void onNext(T t) {
long idx = index.get();
if (idx == Long.MAX_VALUE || !index.compareAndSet(idx, idx + 1)) {
return;
}
task.get().dispose();
downstream.onNext(t);
startTimeout(idx + 1);
}
void startTimeout(long nextIndex) {
task.replace(worker.schedule(new TimeoutTask(nextIndex, this), timeout, unit));
}
@Override
public void onError(Throwable t) {
if (index.getAndSet(Long.MAX_VALUE) != Long.MAX_VALUE) {
task.dispose();
downstream.onError(t);
worker.dispose();
} else {
RxJavaPlugins.onError(t);
}
}
@Override
public void onComplete() {
if (index.getAndSet(Long.MAX_VALUE) != Long.MAX_VALUE) {
task.dispose();
downstream.onComplete();
worker.dispose();
}
}
@Override
public void onTimeout(long idx) {
if (index.compareAndSet(idx, Long.MAX_VALUE)) {
DisposableHelper.dispose(upstream);
ObservableSource f = fallback;
fallback = null;
f.subscribe(new FallbackObserver(downstream, this));
worker.dispose();
}
}
@Override
public void dispose() {
DisposableHelper.dispose(upstream);
DisposableHelper.dispose(this);
worker.dispose();
}
@Override
public boolean isDisposed() {
return DisposableHelper.isDisposed(get());
}
}
static final class FallbackObserver implements Observer {
final Observer downstream;
final AtomicReference arbiter;
FallbackObserver(Observer actual, AtomicReference arbiter) {
this.downstream = actual;
this.arbiter = arbiter;
}
@Override
public void onSubscribe(Disposable d) {
DisposableHelper.replace(arbiter, d);
}
@Override
public void onNext(T t) {
downstream.onNext(t);
}
@Override
public void onError(Throwable t) {
downstream.onError(t);
}
@Override
public void onComplete() {
downstream.onComplete();
}
}
interface TimeoutSupport {
void onTimeout(long idx);
}
}