org.neo4j.driver.internal.shaded.reactor.core.publisher.ParallelPeek Maven / Gradle / Ivy
/*
* Copyright (c) 2016-2021 VMware Inc. or its affiliates, All Rights Reserved.
*
* 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
*
* https://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 reactor.core.publisher;
import java.util.function.Consumer;
import java.util.function.LongConsumer;
import org.reactivestreams.Subscription;
import reactor.core.CoreSubscriber;
import reactor.core.Fuseable;
import reactor.util.annotation.Nullable;
/**
* Execute a Consumer in each 'rail' for the current element passing through.
*
* @param the value type
*/
final class ParallelPeek extends ParallelFlux implements SignalPeek{
final ParallelFlux source;
final Consumer onNext;
final Consumer onAfterNext;
final Consumer onError;
final Runnable onComplete;
final Runnable onAfterTerminated;
final Consumer onSubscribe;
final LongConsumer onRequest;
final Runnable onCancel;
ParallelPeek(ParallelFlux source,
@Nullable Consumer onNext,
@Nullable Consumer onAfterNext,
@Nullable Consumer onError,
@Nullable Runnable onComplete,
@Nullable Runnable onAfterTerminated,
@Nullable Consumer onSubscribe,
@Nullable LongConsumer onRequest,
@Nullable Runnable onCancel
) {
this.source = source;
this.onNext = onNext;
this.onAfterNext = onAfterNext;
this.onError = onError;
this.onComplete = onComplete;
this.onAfterTerminated = onAfterTerminated;
this.onSubscribe = onSubscribe;
this.onRequest = onRequest;
this.onCancel = onCancel;
}
@Override
@SuppressWarnings("unchecked")
public void subscribe(CoreSubscriber[] subscribers) {
if (!validate(subscribers)) {
return;
}
int n = subscribers.length;
CoreSubscriber[] parents = new CoreSubscriber[n];
boolean conditional = subscribers[0] instanceof Fuseable.ConditionalSubscriber;
for (int i = 0; i < n; i++) {
if (conditional) {
parents[i] = new FluxPeekFuseable.PeekConditionalSubscriber<>(
(Fuseable.ConditionalSubscriber)subscribers[i], this);
}
else {
parents[i] = new FluxPeek.PeekSubscriber<>(subscribers[i], this);
}
}
source.subscribe(parents);
}
@Override
public int parallelism() {
return source.parallelism();
}
@Override
public int getPrefetch() {
return source.getPrefetch();
}
@Override
@Nullable
public Consumer onSubscribeCall() {
return onSubscribe;
}
@Override
@Nullable
public Consumer onNextCall() {
return onNext;
}
@Override
@Nullable
public Consumer onErrorCall() {
return onError;
}
@Override
@Nullable
public Runnable onCompleteCall() {
return onComplete;
}
@Override
public Runnable onAfterTerminateCall() {
return onAfterTerminated;
}
@Override
@Nullable
public LongConsumer onRequestCall() {
return onRequest;
}
@Override
@Nullable
public Runnable onCancelCall() {
return onCancel;
}
@Override
@Nullable
public Consumer onAfterNextCall() {
return onAfterNext;
}
@Override
@Nullable
public Object scanUnsafe(Attr key) {
if (key == Attr.PARENT) return source;
if (key == Attr.PREFETCH) return getPrefetch();
if (key == Attr.RUN_STYLE) return Attr.RunStyle.SYNC;
return null;
}
}