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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
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/*
* 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.concurrent.TimeUnit;
import org.reactivestreams.Subscription;
import reactor.core.CoreSubscriber;
import reactor.core.Fuseable;
import reactor.core.scheduler.Scheduler;
import reactor.util.annotation.Nullable;
import reactor.util.function.Tuple2;
import reactor.util.function.Tuples;
/**
* @author Stephane Maldini
*/
final class FluxElapsed extends InternalFluxOperator> implements Fuseable {
final Scheduler scheduler;
FluxElapsed(Flux source, Scheduler scheduler) {
super(source);
this.scheduler = scheduler;
}
@Override
public CoreSubscriber super T> subscribeOrReturn(CoreSubscriber super Tuple2> actual) {
return new ElapsedSubscriber<>(actual, scheduler);
}
@Override
public Object scanUnsafe(Attr key) {
if (key == Attr.RUN_ON) return scheduler;
if (key == Attr.RUN_STYLE) return Attr.RunStyle.SYNC;
return super.scanUnsafe(key);
}
static final class ElapsedSubscriber
implements InnerOperator>,
QueueSubscription> {
final CoreSubscriber super Tuple2> actual;
final Scheduler scheduler;
Subscription s;
QueueSubscription qs;
long lastTime;
ElapsedSubscriber(CoreSubscriber super Tuple2> actual,
Scheduler scheduler) {
this.actual = actual;
this.scheduler = scheduler;
}
@Override
@Nullable
public Object scanUnsafe(Attr key) {
if (key == Attr.PARENT) return s;
if (key == Attr.RUN_ON) return scheduler;
if (key == Attr.RUN_STYLE) return Attr.RunStyle.SYNC;
return InnerOperator.super.scanUnsafe(key);
}
@Override
public void onSubscribe(Subscription s) {
if (Operators.validate(this.s, s)) {
lastTime = scheduler.now(TimeUnit.MILLISECONDS);
this.s = s;
actual.onSubscribe(this);
}
}
@Override
public CoreSubscriber super Tuple2> actual() {
return actual;
}
@Override
public void onNext(T t) {
if(t == null){
actual.onNext(null);
return;
}
actual.onNext(snapshot(t));
}
@Override
public void onError(Throwable t) {
actual.onError(t);
}
@Override
public void onComplete() {
actual.onComplete();
}
@Override
public void request(long n) {
s.request(n);
}
@Override
public void cancel() {
s.cancel();
}
@Override
public int requestFusion(int requestedMode) {
QueueSubscription qs = Operators.as(s);
if (qs != null) {
this.qs = qs;
return qs.requestFusion(requestedMode);
}
return Fuseable.NONE;
}
Tuple2 snapshot(T data){
long now = scheduler.now(TimeUnit.MILLISECONDS);
long last = lastTime;
lastTime = now;
long delta = now - last;
return Tuples.of(delta, data);
}
@Override
@Nullable
public Tuple2 poll() {
T data = qs.poll();
if(data != null){
return snapshot(data);
}
return null;
}
@Override
public int size() {
return qs.size();
}
@Override
public boolean isEmpty() {
return qs.isEmpty();
}
@Override
public void clear() {
qs.clear();
}
}
}
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