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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.single;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicBoolean;
import io.reactivex.*;
import io.reactivex.disposables.*;
public final class SingleTimeout extends Single {
final SingleSource source;
final long timeout;
final TimeUnit unit;
final Scheduler scheduler;
final SingleSource extends T> other;
public SingleTimeout(SingleSource source, long timeout, TimeUnit unit, Scheduler scheduler,
SingleSource extends T> other) {
this.source = source;
this.timeout = timeout;
this.unit = unit;
this.scheduler = scheduler;
this.other = other;
}
@Override
protected void subscribeActual(final SingleObserver super T> s) {
final CompositeDisposable set = new CompositeDisposable();
s.onSubscribe(set);
final AtomicBoolean once = new AtomicBoolean();
Disposable timer = scheduler.scheduleDirect(new TimeoutDispose(once, set, s), timeout, unit);
set.add(timer);
source.subscribe(new TimeoutObserver(once, set, s));
}
final class TimeoutDispose implements Runnable {
private final AtomicBoolean once;
final CompositeDisposable set;
final SingleObserver super T> s;
TimeoutDispose(AtomicBoolean once, CompositeDisposable set, SingleObserver super T> s) {
this.once = once;
this.set = set;
this.s = s;
}
@Override
public void run() {
if (once.compareAndSet(false, true)) {
if (other != null) {
set.clear();
other.subscribe(new TimeoutObserver());
} else {
set.dispose();
s.onError(new TimeoutException());
}
}
}
final class TimeoutObserver implements SingleObserver {
@Override
public void onError(Throwable e) {
set.dispose();
s.onError(e);
}
@Override
public void onSubscribe(Disposable d) {
set.add(d);
}
@Override
public void onSuccess(T value) {
set.dispose();
s.onSuccess(value);
}
}
}
final class TimeoutObserver implements SingleObserver {
private final AtomicBoolean once;
private final CompositeDisposable set;
private final SingleObserver super T> s;
TimeoutObserver(AtomicBoolean once, CompositeDisposable set, SingleObserver super T> s) {
this.once = once;
this.set = set;
this.s = s;
}
@Override
public void onError(Throwable e) {
if (once.compareAndSet(false, true)) {
set.dispose();
s.onError(e);
}
}
@Override
public void onSubscribe(Disposable d) {
set.add(d);
}
@Override
public void onSuccess(T value) {
if (once.compareAndSet(false, true)) {
set.dispose();
s.onSuccess(value);
}
}
}
}
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