/**
* 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.
AtomicInteger;
import io.reactivex.*;
import io.reactivex.disposables.*;
import io.reactivex.internal.util.
AtomicThrowable;
import io.reactivex.plugins.
RxJavaPlugins;
public final class
CompletableMergeDelayErrorArray extends
Completable {
final
CompletableSource[]
sources;
public
CompletableMergeDelayErrorArray(
CompletableSource[]
sources) {
this.
sources =
sources;
}
@
Override
public void
subscribeActual(final
CompletableObserver observer) {
final
CompositeDisposable set = new
CompositeDisposable();
final
AtomicInteger wip = new
AtomicInteger(
sources.length + 1);
final
AtomicThrowable error = new
AtomicThrowable();
observer.
onSubscribe(
set);
for (
CompletableSource c :
sources) {
if (
set.
isDisposed()) {
return;
}
if (
c == null) {
Throwable ex = new
NullPointerException("A completable source is null");
error.
addThrowable(
ex);
wip.
decrementAndGet();
continue;
}
c.
subscribe(new
MergeInnerCompletableObserver(
observer,
set,
error,
wip));
}
if (
wip.
decrementAndGet() == 0) {
Throwable ex =
error.
terminate();
if (
ex == null) {
observer.
onComplete();
} else {
observer.
onError(
ex);
}
}
}
static final class
MergeInnerCompletableObserver
implements
CompletableObserver {
final
CompletableObserver downstream;
final
CompositeDisposable set;
final
AtomicThrowable error;
final
AtomicInteger wip;
MergeInnerCompletableObserver(
CompletableObserver observer,
CompositeDisposable set,
AtomicThrowable error,
AtomicInteger wip) {
this.
downstream =
observer;
this.
set =
set;
this.
error =
error;
this.
wip =
wip;
}
@
Override
public void
onSubscribe(
Disposable d) {
set.
add(
d);
}
@
Override
public void
onError(
Throwable e) {
if (
error.
addThrowable(
e)) {
tryTerminate();
} else {
RxJavaPlugins.
onError(
e);
}
}
@
Override
public void
onComplete() {
tryTerminate();
}
void
tryTerminate() {
if (
wip.
decrementAndGet() == 0) {
Throwable ex =
error.
terminate();
if (
ex == null) {
downstream.
onComplete();
} else {
downstream.
onError(
ex);
}
}
}
}
}