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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
/*
* 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.Objects;
import java.util.function.Function;
import org.reactivestreams.Subscription;
import reactor.core.CoreSubscriber;
import reactor.core.Fuseable;
import reactor.core.Scannable;
import reactor.util.annotation.Nullable;
import reactor.util.context.Context;
final class FluxContextWrite extends InternalFluxOperator implements Fuseable {
final Function doOnContext;
FluxContextWrite(Flux extends T> source,
Function doOnContext) {
super(source);
this.doOnContext = Objects.requireNonNull(doOnContext, "doOnContext");
}
@Override
public CoreSubscriber super T> subscribeOrReturn(CoreSubscriber super T> actual) {
Context c = doOnContext.apply(actual.currentContext());
return new ContextWriteSubscriber<>(actual, c);
}
@Override
public Object scanUnsafe(Attr key) {
if (key == Scannable.Attr.RUN_STYLE) return Attr.RunStyle.SYNC;
return super.scanUnsafe(key);
}
static final class ContextWriteSubscriber
implements ConditionalSubscriber, InnerOperator,
QueueSubscription {
final CoreSubscriber super T> actual;
final ConditionalSubscriber super T> actualConditional;
final Context context;
QueueSubscription qs;
Subscription s;
@SuppressWarnings("unchecked")
ContextWriteSubscriber(CoreSubscriber super T> actual, Context context) {
this.actual = actual;
this.context = context;
if (actual instanceof ConditionalSubscriber) {
this.actualConditional = (ConditionalSubscriber super T>) actual;
}
else {
this.actualConditional = null;
}
}
@Override
@Nullable
public Object scanUnsafe(Attr key) {
if (key == Attr.PARENT) {
return s;
}
if (key == Scannable.Attr.RUN_STYLE) {
return Attr.RunStyle.SYNC;
}
return InnerOperator.super.scanUnsafe(key);
}
@Override
public Context currentContext() {
return this.context;
}
@SuppressWarnings("unchecked")
@Override
public void onSubscribe(Subscription s) {
if (Operators.validate(this.s, s)) {
this.s = s;
if (s instanceof QueueSubscription) {
this.qs = (QueueSubscription) s;
}
actual.onSubscribe(this);
}
}
@Override
public void onNext(T t) {
actual.onNext(t);
}
@Override
public boolean tryOnNext(T t) {
if (actualConditional != null) {
return actualConditional.tryOnNext(t);
}
actual.onNext(t);
return true;
}
@Override
public void onError(Throwable t) {
actual.onError(t);
}
@Override
public void onComplete() {
actual.onComplete();
}
@Override
public CoreSubscriber super T> actual() {
return actual;
}
@Override
public void request(long n) {
s.request(n);
}
@Override
public void cancel() {
s.cancel();
}
@Override
public int requestFusion(int requestedMode) {
if (qs == null) {
return Fuseable.NONE;
}
return qs.requestFusion(requestedMode);
}
@Override
@Nullable
public T poll() {
if (qs != null) {
return qs.poll();
}
return null;
}
@Override
public boolean isEmpty() {
return qs == null || qs.isEmpty();
}
@Override
public void clear() {
if (qs != null) {
qs.clear();
}
}
@Override
public int size() {
return qs != null ? qs.size() : 0;
}
}
}
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