/**
* 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.maybe;
import io.reactivex.*;
import io.reactivex.disposables.
Disposable;
import io.reactivex.exceptions.*;
import io.reactivex.functions.*;
import io.reactivex.internal.disposables.*;
import io.reactivex.plugins.
RxJavaPlugins;
/**
* Peeks into the lifecycle of a Maybe and MaybeObserver.
*
* @param <T> the value type
*/
public final class
MaybePeek<T> extends
AbstractMaybeWithUpstream<T, T> {
final
Consumer<? super
Disposable>
onSubscribeCall;
final
Consumer<? super T>
onSuccessCall;
final
Consumer<? super
Throwable>
onErrorCall;
final
Action onCompleteCall;
final
Action onAfterTerminate;
final
Action onDisposeCall;
public
MaybePeek(
MaybeSource<T>
source,
Consumer<? super
Disposable>
onSubscribeCall,
Consumer<? super T>
onSuccessCall,
Consumer<? super
Throwable>
onErrorCall,
Action onCompleteCall,
Action onAfterTerminate,
Action onDispose) {
super(
source);
this.
onSubscribeCall =
onSubscribeCall;
this.
onSuccessCall =
onSuccessCall;
this.
onErrorCall =
onErrorCall;
this.
onCompleteCall =
onCompleteCall;
this.
onAfterTerminate =
onAfterTerminate;
this.
onDisposeCall =
onDispose;
}
@
Override
protected void
subscribeActual(
MaybeObserver<? super T>
observer) {
source.
subscribe(new
MaybePeekObserver<T>(
observer, this));
}
static final class
MaybePeekObserver<T> implements
MaybeObserver<T>,
Disposable {
final
MaybeObserver<? super T>
downstream;
final
MaybePeek<T>
parent;
Disposable upstream;
MaybePeekObserver(
MaybeObserver<? super T>
actual,
MaybePeek<T>
parent) {
this.
downstream =
actual;
this.
parent =
parent;
}
@
Override
public void
dispose() {
try {
parent.
onDisposeCall.
run();
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
RxJavaPlugins.
onError(
ex);
}
upstream.
dispose();
upstream =
DisposableHelper.
DISPOSED;
}
@
Override
public boolean
isDisposed() {
return
upstream.
isDisposed();
}
@
Override
public void
onSubscribe(
Disposable d) {
if (
DisposableHelper.
validate(this.
upstream,
d)) {
try {
parent.
onSubscribeCall.
accept(
d);
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
d.
dispose();
this.
upstream =
DisposableHelper.
DISPOSED;
EmptyDisposable.
error(
ex,
downstream);
return;
}
this.
upstream =
d;
downstream.
onSubscribe(this);
}
}
@
Override
public void
onSuccess(T
value) {
if (this.
upstream ==
DisposableHelper.
DISPOSED) {
return;
}
try {
parent.
onSuccessCall.
accept(
value);
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
onErrorInner(
ex);
return;
}
this.
upstream =
DisposableHelper.
DISPOSED;
downstream.
onSuccess(
value);
onAfterTerminate();
}
@
Override
public void
onError(
Throwable e) {
if (this.
upstream ==
DisposableHelper.
DISPOSED) {
RxJavaPlugins.
onError(
e);
return;
}
onErrorInner(
e);
}
void
onErrorInner(
Throwable e) {
try {
parent.
onErrorCall.
accept(
e);
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
e = new
CompositeException(
e,
ex);
}
this.
upstream =
DisposableHelper.
DISPOSED;
downstream.
onError(
e);
onAfterTerminate();
}
@
Override
public void
onComplete() {
if (this.
upstream ==
DisposableHelper.
DISPOSED) {
return;
}
try {
parent.
onCompleteCall.
run();
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
onErrorInner(
ex);
return;
}
this.
upstream =
DisposableHelper.
DISPOSED;
downstream.
onComplete();
onAfterTerminate();
}
void
onAfterTerminate() {
try {
parent.
onAfterTerminate.
run();
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
RxJavaPlugins.
onError(
ex);
}
}
}
}