/**
* 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.completable;
import java.util.concurrent.atomic.
AtomicReference;
import io.reactivex.*;
import io.reactivex.disposables.
Disposable;
import io.reactivex.exceptions.*;
import io.reactivex.functions.
Function;
import io.reactivex.internal.disposables.
DisposableHelper;
import io.reactivex.internal.functions.
ObjectHelper;
public final class
CompletableResumeNext extends
Completable {
final
CompletableSource source;
final
Function<? super
Throwable, ? extends
CompletableSource>
errorMapper;
public
CompletableResumeNext(
CompletableSource source,
Function<? super
Throwable, ? extends
CompletableSource>
errorMapper) {
this.
source =
source;
this.
errorMapper =
errorMapper;
}
@
Override
protected void
subscribeActual(final
CompletableObserver observer) {
ResumeNextObserver parent = new
ResumeNextObserver(
observer,
errorMapper);
observer.
onSubscribe(
parent);
source.
subscribe(
parent);
}
static final class
ResumeNextObserver
extends
AtomicReference<
Disposable>
implements
CompletableObserver,
Disposable {
private static final long
serialVersionUID = 5018523762564524046L;
final
CompletableObserver downstream;
final
Function<? super
Throwable, ? extends
CompletableSource>
errorMapper;
boolean
once;
ResumeNextObserver(
CompletableObserver observer,
Function<? super
Throwable, ? extends
CompletableSource>
errorMapper) {
this.
downstream =
observer;
this.
errorMapper =
errorMapper;
}
@
Override
public void
onSubscribe(
Disposable d) {
DisposableHelper.
replace(this,
d);
}
@
Override
public void
onComplete() {
downstream.
onComplete();
}
@
Override
public void
onError(
Throwable e) {
if (
once) {
downstream.
onError(
e);
return;
}
once = true;
CompletableSource c;
try {
c =
ObjectHelper.
requireNonNull(
errorMapper.
apply(
e), "The errorMapper returned a null CompletableSource");
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
downstream.
onError(new
CompositeException(
e,
ex));
return;
}
c.
subscribe(this);
}
@
Override
public boolean
isDisposed() {
return
DisposableHelper.
isDisposed(
get());
}
@
Override
public void
dispose() {
DisposableHelper.
dispose(this);
}
}
}