org.redisson.reactive.RedissonTopicReactive Maven / Gradle / Ivy

/**
 * Copyright 2018 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 org.redisson.reactive;

import java.util.Collections;
import java.util.List;
import java.util.function.Supplier;

import org.reactivestreams.Publisher;
import org.redisson.PubSubMessageListener;
import org.redisson.PubSubStatusListener;
import org.redisson.RedissonTopic;
import org.redisson.api.RFuture;
import org.redisson.api.RTopic;
import org.redisson.api.RTopicReactive;
import org.redisson.api.listener.MessageListener;
import org.redisson.api.listener.StatusListener;
import org.redisson.client.RedisPubSubListener;
import org.redisson.client.codec.Codec;
import org.redisson.command.CommandReactiveExecutor;

/**
 * Distributed topic implementation. Messages are delivered to all message listeners across Redis cluster.
 *
 * @author Nikita Koksharov
 *
 * @param  message
 */
public class RedissonTopicReactive implements RTopicReactive {

    private final RTopic topic;
    private final CommandReactiveExecutor commandExecutor;
    private final String name;

    public RedissonTopicReactive(CommandReactiveExecutor commandExecutor, String name) {
        this(commandExecutor.getConnectionManager().getCodec(), commandExecutor, name);
    }

    public RedissonTopicReactive(Codec codec, CommandReactiveExecutor commandExecutor, String name) {
        this.topic = new RedissonTopic(codec, commandExecutor, name);
        this.commandExecutor = commandExecutor;
        this.name = name;
    }

    @Override
    public List getChannelNames() {
        return Collections.singletonList(name);
    }

    @Override
    public Publisher publish(final M message) {
        return commandExecutor.reactive(new Supplier>() {
            @Override
            public RFuture get() {
                return topic.publishAsync(message);
            }
        });
    }

    @Override
    public Publisher addListener(StatusListener listener) {
        return addListener(new PubSubStatusListener