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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) 2016-2023 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 io.micrometer.context.ContextSnapshot;
import org.reactivestreams.Publisher;
import org.reactivestreams.Subscription;
import reactor.core.CorePublisher;
import reactor.core.CoreSubscriber;
import reactor.core.Scannable;
import reactor.util.annotation.Nullable;
import reactor.util.context.Context;
/**
* A decorating {@link Mono} {@link Publisher} that exposes {@link Mono} API over an arbitrary {@link Publisher}
* Useful to create operators which return a {@link Mono}, e.g. :
* {@code
* flux.as(Mono::fromDirect)
* .then(d -> Mono.delay(Duration.ofSeconds(1))
* .block();
* }
* @param delegate {@link Publisher} type
*/
final class MonoSource extends Mono implements Scannable, SourceProducer,
OptimizableOperator {
final Publisher extends I> source;
@Nullable
final OptimizableOperator, I> optimizableOperator;
MonoSource(Publisher extends I> source) {
this.source = Objects.requireNonNull(source);
if (source instanceof OptimizableOperator) {
@SuppressWarnings("unchecked")
OptimizableOperator, I> optimSource = (OptimizableOperator, I>) source;
this.optimizableOperator = optimSource;
}
else {
this.optimizableOperator = null;
}
}
/**
* Default is simply delegating and decorating with {@link Mono} API. Note this
* assumes an identity between input and output types.
* @param actual
*/
@Override
public void subscribe(CoreSubscriber super I> actual) {
source.subscribe(actual);
}
@Override
public CoreSubscriber super I> subscribeOrReturn(CoreSubscriber super I> actual) {
return actual;
}
@Override
public final CorePublisher extends I> source() {
return this;
}
@Override
public final OptimizableOperator, ? extends I> nextOptimizableSource() {
return optimizableOperator;
}
@Override
@Nullable
public Object scanUnsafe(Attr key) {
if (key == Attr.PARENT) {
return source;
}
if (key == Attr.RUN_STYLE) {
return Scannable.from(source).scanUnsafe(key);
}
return SourceProducer.super.scanUnsafe(key);
}
}
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