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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) 2015-2023 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.time.Duration;
import java.util.Objects;
import java.util.concurrent.Callable;
import java.util.concurrent.atomic.AtomicBoolean;
import org.reactivestreams.Subscription;
import reactor.core.CoreSubscriber;
import reactor.util.annotation.Nullable;
/**
* Executes the runnable whenever a Subscriber subscribes to this Mono.
*/
final class MonoRunnable extends Mono implements Callable, SourceProducer {
final Runnable run;
MonoRunnable(Runnable run) {
this.run = Objects.requireNonNull(run, "run");
}
@Override
public void subscribe(CoreSubscriber super T> actual) {
MonoRunnableEagerSubscription s = new MonoRunnableEagerSubscription();
actual.onSubscribe(s);
if (s.isCancelled()) {
return;
}
try {
run.run();
actual.onComplete();
} catch (Throwable ex) {
actual.onError(Operators.onOperatorError(ex, actual.currentContext()));
}
}
@Override
@Nullable
public T block(Duration m) {
run.run();
return null;
}
@Override
@Nullable
public T block() {
run.run();
return null;
}
@Override
@Nullable
public Void call() throws Exception {
run.run();
return null;
}
@Override
public Object scanUnsafe(Attr key) {
if (key == Attr.RUN_STYLE) return Attr.RunStyle.SYNC;
return SourceProducer.super.scanUnsafe(key);
}
static final class MonoRunnableEagerSubscription extends AtomicBoolean implements Subscription {
@Override
public void request(long n) {
//NO-OP
}
@Override
public void cancel() {
set(true);
}
public boolean isCancelled() {
return get();
}
}
}
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