/**
* 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 io.reactivex.internal.functions.ObjectHelper;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicReference;
import io.reactivex.*;
import io.reactivex.disposables.Disposable;
import io.reactivex.exceptions.Exceptions;
import io.reactivex.functions.Function;
import io.reactivex.internal.disposables.*;
import io.reactivex.internal.observers.FullArbiterObserver;
import io.reactivex.observers.*;
import io.reactivex.plugins.RxJavaPlugins;
public final class ObservableTimeout<T, U, V> extends AbstractObservableWithUpstream<T, T> {
final ObservableSource<U> firstTimeoutIndicator;
final Function<? super T, ? extends ObservableSource<V>> itemTimeoutIndicator;
final ObservableSource<? extends T> other;
public ObservableTimeout(
ObservableSource<T> source,
ObservableSource<U> firstTimeoutIndicator,
Function<? super T, ? extends ObservableSource<V>> itemTimeoutIndicator,
ObservableSource<? extends T> other) {
super(source);
this.firstTimeoutIndicator = firstTimeoutIndicator;
this.itemTimeoutIndicator = itemTimeoutIndicator;
this.other = other;
}
@Override
public void subscribeActual(Observer<? super T> t) {
if (other == null) {
source.subscribe(new TimeoutObserver<T, U, V>(
new SerializedObserver<T>(t),
firstTimeoutIndicator, itemTimeoutIndicator));
} else {
source.subscribe(new TimeoutOtherObserver<T, U, V>(
t, firstTimeoutIndicator, itemTimeoutIndicator, other));
}
}
static final class TimeoutObserver<T, U, V>
extends AtomicReference<Disposable>
implements Observer<T>, Disposable, OnTimeout {
private static final long serialVersionUID = 2672739326310051084L;
final Observer<? super T> actual;
final ObservableSource<U> firstTimeoutIndicator;
final Function<? super T, ? extends ObservableSource<V>> itemTimeoutIndicator;
Disposable s;
volatile long index;
TimeoutObserver(Observer<? super T> actual,
ObservableSource<U> firstTimeoutIndicator,
Function<? super T, ? extends ObservableSource<V>> itemTimeoutIndicator) {
this.actual = actual;
this.firstTimeoutIndicator = firstTimeoutIndicator;
this.itemTimeoutIndicator = itemTimeoutIndicator;
}
@Override
public void onSubscribe(Disposable s) {
if (DisposableHelper.validate(this.s, s)) {
this.s = s;
Observer<? super T> a = actual;
ObservableSource<U> p = firstTimeoutIndicator;
if (p != null) {
TimeoutInnerObserver<T, U, V> tis = new TimeoutInnerObserver<T, U, V>(this, 0);
if (compareAndSet(null, tis)) {
a.onSubscribe(this);
p.subscribe(tis);
}
} else {
a.onSubscribe(this);
}
}
}
@Override
public void onNext(T t) {
long idx = index + 1;
index = idx;
actual.onNext(t);
Disposable d = get();
if (d != null) {
d.dispose();
}
ObservableSource<V> p;
try {
p = ObjectHelper.requireNonNull(itemTimeoutIndicator.apply(t), "The ObservableSource returned is null");
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
dispose();
actual.onError(e);
return;
}
TimeoutInnerObserver<T, U, V> tis = new TimeoutInnerObserver<T, U, V>(this, idx);
if (compareAndSet(d, tis)) {
p.subscribe(tis);
}
}
@Override
public void onError(Throwable t) {
DisposableHelper.dispose(this);
actual.onError(t);
}
@Override
public void onComplete() {
DisposableHelper.dispose(this);
actual.onComplete();
}
@Override
public void dispose() {
if (DisposableHelper.dispose(this)) {
s.dispose();
}
}
@Override
public boolean isDisposed() {
return s.isDisposed();
}
@Override
public void timeout(long idx) {
if (idx == index) {
dispose();
actual.onError(new TimeoutException());
}
}
@Override
public void innerError(Throwable e) {
s.dispose();
actual.onError(e);
}
}
interface OnTimeout {
void timeout(long index);
void innerError(Throwable e);
}
static final class TimeoutInnerObserver<T, U, V> extends DisposableObserver<Object> {
final OnTimeout parent;
final long index;
boolean done;
TimeoutInnerObserver(OnTimeout parent, final long index) {
this.parent = parent;
this.index = index;
}
@Override
public void onNext(Object t) {
if (done) {
return;
}
done = true;
dispose();
parent.timeout(index);
}
@Override
public void onError(Throwable t) {
if (done) {
RxJavaPlugins.onError(t);
return;
}
done = true;
parent.innerError(t);
}
@Override
public void onComplete() {
if (done) {
return;
}
done = true;
parent.timeout(index);
}
}
static final class TimeoutOtherObserver<T, U, V>
extends AtomicReference<Disposable>
implements Observer<T>, Disposable, OnTimeout {
private static final long serialVersionUID = -1957813281749686898L;
final Observer<? super T> actual;
final ObservableSource<U> firstTimeoutIndicator;
final Function<? super T, ? extends ObservableSource<V>> itemTimeoutIndicator;
final ObservableSource<? extends T> other;
final ObserverFullArbiter<T> arbiter;
Disposable s;
boolean done;
volatile long index;
TimeoutOtherObserver(Observer<? super T> actual,
ObservableSource<U> firstTimeoutIndicator,
Function<? super T, ? extends ObservableSource<V>> itemTimeoutIndicator, ObservableSource<? extends T> other) {
this.actual = actual;
this.firstTimeoutIndicator = firstTimeoutIndicator;
this.itemTimeoutIndicator = itemTimeoutIndicator;
this.other = other;
this.arbiter = new ObserverFullArbiter<T>(actual, this, 8);
}
@Override
public void onSubscribe(Disposable s) {
if (DisposableHelper.validate(this.s, s)) {
this.s = s;
arbiter.setDisposable(s);
Observer<? super T> a = actual;
ObservableSource<U> p = firstTimeoutIndicator;
if (p != null) {
TimeoutInnerObserver<T, U, V> tis = new TimeoutInnerObserver<T, U, V>(this, 0);
if (compareAndSet(null, tis)) {
a.onSubscribe(arbiter);
p.subscribe(tis);
}
} else {
a.onSubscribe(arbiter);
}
}
}
@Override
public void onNext(T t) {
if (done) {
return;
}
long idx = index + 1;
index = idx;
if (!arbiter.onNext(t, s)) {
return;
}
Disposable d = get();
if (d != null) {
d.dispose();
}
ObservableSource<V> p;
try {
p = ObjectHelper.requireNonNull(itemTimeoutIndicator.apply(t), "The ObservableSource returned is null");
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
actual.onError(e);
return;
}
TimeoutInnerObserver<T, U, V> tis = new TimeoutInnerObserver<T, U, V>(this, idx);
if (compareAndSet(d, tis)) {
p.subscribe(tis);
}
}
@Override
public void onError(Throwable t) {
if (done) {
RxJavaPlugins.onError(t);
return;
}
done = true;
dispose();
arbiter.onError(t, s);
}
@Override
public void onComplete() {
if (done) {
return;
}
done = true;
dispose();
arbiter.onComplete(s);
}
@Override
public void dispose() {
if (DisposableHelper.dispose(this)) {
s.dispose();
}
}
@Override
public boolean isDisposed() {
return s.isDisposed();
}
@Override
public void timeout(long idx) {
if (idx == index) {
dispose();
other.subscribe(new FullArbiterObserver<T>(arbiter));
}
}
@Override
public void innerError(Throwable e) {
s.dispose();
actual.onError(e);
}
}
}