io.reactivex.internal.operators.flowable.FlowableBufferExactBoundary Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of rxjava Show documentation
Show all versions of rxjava Show documentation
Reactive Extensions for Java
/**
* 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.flowable;
import java.util.Collection;
import java.util.concurrent.Callable;
import org.reactivestreams.*;
import io.reactivex.*;
import io.reactivex.disposables.Disposable;
import io.reactivex.exceptions.Exceptions;
import io.reactivex.internal.functions.ObjectHelper;
import io.reactivex.internal.queue.MpscLinkedQueue;
import io.reactivex.internal.subscribers.QueueDrainSubscriber;
import io.reactivex.internal.subscriptions.*;
import io.reactivex.internal.util.QueueDrainHelper;
import io.reactivex.subscribers.*;
public final class FlowableBufferExactBoundary, B>
extends AbstractFlowableWithUpstream {
final Publisher boundary;
final Callable bufferSupplier;
public FlowableBufferExactBoundary(Flowable source, Publisher boundary, Callable bufferSupplier) {
super(source);
this.boundary = boundary;
this.bufferSupplier = bufferSupplier;
}
@Override
protected void subscribeActual(Subscriber super U> s) {
source.subscribe(new BufferExactBoundarySubscriber(new SerializedSubscriber(s), bufferSupplier, boundary));
}
static final class BufferExactBoundarySubscriber, B>
extends QueueDrainSubscriber implements FlowableSubscriber, Subscription, Disposable {
final Callable bufferSupplier;
final Publisher boundary;
Subscription upstream;
Disposable other;
U buffer;
BufferExactBoundarySubscriber(Subscriber super U> actual, Callable bufferSupplier,
Publisher boundary) {
super(actual, new MpscLinkedQueue());
this.bufferSupplier = bufferSupplier;
this.boundary = boundary;
}
@Override
public void onSubscribe(Subscription s) {
if (!SubscriptionHelper.validate(this.upstream, s)) {
return;
}
this.upstream = s;
U b;
try {
b = ObjectHelper.requireNonNull(bufferSupplier.call(), "The buffer supplied is null");
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
cancelled = true;
s.cancel();
EmptySubscription.error(e, downstream);
return;
}
buffer = b;
BufferBoundarySubscriber bs = new BufferBoundarySubscriber(this);
other = bs;
downstream.onSubscribe(this);
if (!cancelled) {
s.request(Long.MAX_VALUE);
boundary.subscribe(bs);
}
}
@Override
public void onNext(T t) {
synchronized (this) {
U b = buffer;
if (b == null) {
return;
}
b.add(t);
}
}
@Override
public void onError(Throwable t) {
cancel();
downstream.onError(t);
}
@Override
public void onComplete() {
U b;
synchronized (this) {
b = buffer;
if (b == null) {
return;
}
buffer = null;
}
queue.offer(b);
done = true;
if (enter()) {
QueueDrainHelper.drainMaxLoop(queue, downstream, false, this, this);
}
}
@Override
public void request(long n) {
requested(n);
}
@Override
public void cancel() {
if (!cancelled) {
cancelled = true;
other.dispose();
upstream.cancel();
if (enter()) {
queue.clear();
}
}
}
void next() {
U next;
try {
next = ObjectHelper.requireNonNull(bufferSupplier.call(), "The buffer supplied is null");
} catch (Throwable e) {
Exceptions.throwIfFatal(e);
cancel();
downstream.onError(e);
return;
}
U b;
synchronized (this) {
b = buffer;
if (b == null) {
return;
}
buffer = next;
}
fastPathEmitMax(b, false, this);
}
@Override
public void dispose() {
cancel();
}
@Override
public boolean isDisposed() {
return cancelled;
}
@Override
public boolean accept(Subscriber super U> a, U v) {
downstream.onNext(v);
return true;
}
}
static final class BufferBoundarySubscriber, B> extends DisposableSubscriber {
final BufferExactBoundarySubscriber parent;
BufferBoundarySubscriber(BufferExactBoundarySubscriber parent) {
this.parent = parent;
}
@Override
public void onNext(B t) {
parent.next();
}
@Override
public void onError(Throwable t) {
parent.onError(t);
}
@Override
public void onComplete() {
parent.onComplete();
}
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy