org.redisson.RedissonBlockingQueue 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;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.TimeUnit;

import org.redisson.api.RBlockingQueue;
import org.redisson.api.RFuture;
import org.redisson.api.RedissonClient;
import org.redisson.client.codec.Codec;
import org.redisson.client.protocol.RedisCommand;
import org.redisson.client.protocol.RedisCommands;
import org.redisson.command.CommandAsyncExecutor;
import org.redisson.connection.decoder.ListDrainToDecoder;

/**
 * Distributed and concurrent implementation of {@link java.util.concurrent.BlockingQueue}.
 *
 * 
Queue size limited by Redis server memory amount. This is why {@link #remainingCapacity()} always
 * returns Integer.MAX_VALUE
 *
 * @author [email protected]
 * @author Nikita Koksharov
 */
public class RedissonBlockingQueue extends RedissonQueue implements RBlockingQueue {

    protected RedissonBlockingQueue(CommandAsyncExecutor commandExecutor, String name, RedissonClient redisson) {
        super(commandExecutor, name, redisson);
    }

    protected RedissonBlockingQueue(Codec codec, CommandAsyncExecutor commandExecutor, String name, RedissonClient redisson) {
        super(codec, commandExecutor, name, redisson);
    }

    @Override
    public RFuture putAsync(V e) {
        return addAsync(e, RedisCommands.RPUSH_VOID);
    }

    /*
     * (non-Javadoc)
     * @see java.util.concurrent.BlockingQueue#put(java.lang.Object)
     */
    @Override
    public void put(V e) throws InterruptedException {
        get(putAsync(e));
    }

    @Override
    public boolean offer(V e, long timeout, TimeUnit unit) throws InterruptedException {
        return offer(e);
    }

    @Override
    public RFuture takeAsync() {
        return commandExecutor.writeAsync(getName(), codec, RedisCommands.BLPOP_VALUE, getName(), 0);
    }

    /*
     * (non-Javadoc)
     * @see java.util.concurrent.BlockingQueue#take()
     */
    @Override
    public V take() throws InterruptedException {
        return get(takeAsync());
    }

    @Override
    public RFuture pollAsync(long timeout, TimeUnit unit) {
        return commandExecutor.writeAsync(getName(), codec, RedisCommands.BLPOP_VALUE, getName(), toSeconds(timeout, unit));
    }

    /*
     * (non-Javadoc)
     * @see java.util.concurrent.BlockingQueue#poll(long, java.util.concurrent.TimeUnit)
     */
    @Override
    public V poll(long timeout, TimeUnit unit) throws InterruptedException {
        return get(pollAsync(timeout, unit));
    }

    /*
     * (non-Javadoc)
     * @see org.redisson.core.RBlockingQueue#pollFromAny(long, java.util.concurrent.TimeUnit, java.lang.String[])
     */
    @Override
    public V pollFromAny(long timeout, TimeUnit unit, String ... queueNames) throws InterruptedException {
        return get(pollFromAnyAsync(timeout, unit, queueNames));
    }

    /*
     * (non-Javadoc)
     * @see org.redisson.core.RBlockingQueueAsync#pollFromAnyAsync(long, java.util.concurrent.TimeUnit, java.lang.String[])
     */
    @Override
    public RFuture pollFromAnyAsync(long timeout, TimeUnit unit, String ... queueNames) {
        List