/**
* 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 io.reactivex.*;
import io.reactivex.disposables.
Disposable;
import io.reactivex.exceptions.
Exceptions;
import io.reactivex.functions.
Consumer;
import io.reactivex.internal.disposables.
DisposableHelper;
import io.reactivex.plugins.
RxJavaPlugins;
/**
* Calls a consumer after pushing the current item to the downstream.
* <p>History: 2.0.1 - experimental
* @param <T> the value type
* @since 2.1
*/
public final class
SingleDoAfterSuccess<T> extends
Single<T> {
final
SingleSource<T>
source;
final
Consumer<? super T>
onAfterSuccess;
public
SingleDoAfterSuccess(
SingleSource<T>
source,
Consumer<? super T>
onAfterSuccess) {
this.
source =
source;
this.
onAfterSuccess =
onAfterSuccess;
}
@
Override
protected void
subscribeActual(
SingleObserver<? super T>
observer) {
source.
subscribe(new
DoAfterObserver<T>(
observer,
onAfterSuccess));
}
static final class
DoAfterObserver<T> implements
SingleObserver<T>,
Disposable {
final
SingleObserver<? super T>
downstream;
final
Consumer<? super T>
onAfterSuccess;
Disposable upstream;
DoAfterObserver(
SingleObserver<? super T>
actual,
Consumer<? super T>
onAfterSuccess) {
this.
downstream =
actual;
this.
onAfterSuccess =
onAfterSuccess;
}
@
Override
public void
onSubscribe(
Disposable d) {
if (
DisposableHelper.
validate(this.
upstream,
d)) {
this.
upstream =
d;
downstream.
onSubscribe(this);
}
}
@
Override
public void
onSuccess(T
t) {
downstream.
onSuccess(
t);
try {
onAfterSuccess.
accept(
t);
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
// remember, onSuccess is a terminal event and we can't call onError
RxJavaPlugins.
onError(
ex);
}
}
@
Override
public void
onError(
Throwable e) {
downstream.
onError(
e);
}
@
Override
public void
dispose() {
upstream.
dispose();
}
@
Override
public boolean
isDisposed() {
return
upstream.
isDisposed();
}
}
}