/**
* 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.atomic.
AtomicReference;
import io.reactivex.*;
import io.reactivex.disposables.
Disposable;
import io.reactivex.exceptions.
Exceptions;
import io.reactivex.functions.
Action;
import io.reactivex.internal.disposables.
DisposableHelper;
import io.reactivex.plugins.
RxJavaPlugins;
public final class
SingleDoOnDispose<T> extends
Single<T> {
final
SingleSource<T>
source;
final
Action onDispose;
public
SingleDoOnDispose(
SingleSource<T>
source,
Action onDispose) {
this.
source =
source;
this.
onDispose =
onDispose;
}
@
Override
protected void
subscribeActual(final
SingleObserver<? super T>
observer) {
source.
subscribe(new
DoOnDisposeObserver<T>(
observer,
onDispose));
}
static final class
DoOnDisposeObserver<T>
extends
AtomicReference<
Action>
implements
SingleObserver<T>,
Disposable {
private static final long
serialVersionUID = -8583764624474935784L;
final
SingleObserver<? super T>
downstream;
Disposable upstream;
DoOnDisposeObserver(
SingleObserver<? super T>
actual,
Action onDispose) {
this.
downstream =
actual;
this.
lazySet(
onDispose);
}
@
Override
public void
dispose() {
Action a =
getAndSet(null);
if (
a != null) {
try {
a.
run();
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
RxJavaPlugins.
onError(
ex);
}
upstream.
dispose();
}
}
@
Override
public boolean
isDisposed() {
return
upstream.
isDisposed();
}
@
Override
public void
onSubscribe(
Disposable d) {
if (
DisposableHelper.
validate(this.
upstream,
d)) {
this.
upstream =
d;
downstream.
onSubscribe(this);
}
}
@
Override
public void
onSuccess(T
value) {
downstream.
onSuccess(
value);
}
@
Override
public void
onError(
Throwable e) {
downstream.
onError(
e);
}
}
}