com.github.lontime.shaded.org.redisson.reactive.RedissonReliableTopicReactive Maven / Gradle / Ivy
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/**
* Copyright (c) 2013-2021 Nikita Koksharov
*
* 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
*
* http://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 com.github.lontime.shaded.org.redisson.reactive;
import com.github.lontime.shaded.org.redisson.api.RFuture;
import com.github.lontime.shaded.org.redisson.api.RReliableTopic;
import reactor.core.publisher.Flux;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.atomic.AtomicReference;
/**
*
* @author Nikita Koksharov
*
*/
public class RedissonReliableTopicReactive {
private final RReliableTopic topic;
public RedissonReliableTopicReactive(RReliableTopic topic) {
this.topic = topic;
}
public Flux getMessages(Class type) {
return Flux.create(emitter -> {
emitter.onRequest(n -> {
AtomicLong counter = new AtomicLong(n);
AtomicReference idRef = new AtomicReference<>();
RFuture t = topic.addListenerAsync(type, (channel, msg) -> {
emitter.next(msg);
if (counter.decrementAndGet() == 0) {
topic.removeListenerAsync(idRef.get());
emitter.complete();
}
});
t.whenComplete((id, e) -> {
if (e != null) {
emitter.error(e);
return;
}
idRef.set(id);
emitter.onDispose(() -> {
topic.removeListenerAsync(id);
});
});
});
});
}
}