All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.github.lontime.shaded.org.redisson.RedissonBlockingQueue Maven / Gradle / Ivy

Go to download

The newest version!
/**
 * 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;

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

import java.time.Duration;
import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;

/**
 * 
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 {

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

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

    public RedissonBlockingQueue(Codec codec, CommandAsyncExecutor commandExecutor, String name) {
        super(codec, commandExecutor, name, null);
        this.name = name;
    }

    @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(getRawName(), codec, RedisCommands.BLPOP_VALUE, getRawName(), 0);
    }

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

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

    /*
     * (non-Javadoc)
     * @see com.github.lontime.shaded.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 commandExecutor.getInterrupted(pollFromAnyAsync(timeout, unit, queueNames));
    }

    /*
     * (non-Javadoc)
     * @see com.github.lontime.shaded.org.redisson.core.RBlockingQueueAsync#pollFromAnyAsync(long, java.util.concurrent.TimeUnit, java.lang.String[])
     */
    @Override
    public RFuture pollFromAnyAsync(long timeout, TimeUnit unit, String... queueNames) {
        return commandExecutor.pollFromAnyAsync(getRawName(), codec, RedisCommands.BLPOP_VALUE,
                                    toSeconds(timeout, unit), queueNames);
    }

    @Override
    public Map> pollFirstFromAny(Duration duration, int count, String... queueNames) throws InterruptedException {
        return commandExecutor.getInterrupted(pollFirstFromAnyAsync(duration, count, queueNames));
    }

    @Override
    public RFuture>> pollFirstFromAnyAsync(Duration duration, int count, String... queueNames) {
        List params = new ArrayList<>();
        params.add(toSeconds(duration.getSeconds(), TimeUnit.SECONDS));
        params.add(queueNames.length + 1);
        params.add(getRawName());
        params.addAll(Arrays.asList(queueNames));
        params.add("LEFT");
        params.add("COUNT");
        params.add(count);
        return commandExecutor.writeAsync(getRawName(), codec, RedisCommands.BLMPOP, params.toArray());
    }

    @Override
    public Map> pollLastFromAny(Duration duration, int count, String... queueNames) throws InterruptedException {
        return commandExecutor.getInterrupted(pollLastFromAnyAsync(duration, count, queueNames));
    }

    @Override
    public RFuture>> pollLastFromAnyAsync(Duration duration, int count, String... queueNames) {
        List params = new ArrayList<>();
        params.add(toSeconds(duration.getSeconds(), TimeUnit.SECONDS));
        params.add(queueNames.length + 1);
        params.add(getRawName());
        params.addAll(Arrays.asList(queueNames));
        params.add("RIGHT");
        params.add("COUNT");
        params.add(count);
        return commandExecutor.writeAsync(getRawName(), codec, RedisCommands.BLMPOP, params.toArray());
    }

    @Override
    public RFuture pollLastAndOfferFirstToAsync(String queueName, long timeout, TimeUnit unit) {
        return commandExecutor.writeAsync(getRawName(), codec, RedisCommands.BRPOPLPUSH, getRawName(), queueName, toSeconds(timeout, unit));
    }

    @Override
    public V pollLastAndOfferFirstTo(String queueName, long timeout, TimeUnit unit) throws InterruptedException {
        return commandExecutor.getInterrupted(pollLastAndOfferFirstToAsync(queueName, timeout, unit));
    }
    
    @Override
    public V takeLastAndOfferFirstTo(String queueName) throws InterruptedException {
        return commandExecutor.getInterrupted(takeLastAndOfferFirstToAsync(queueName));
    }
    
    @Override
    public RFuture takeLastAndOfferFirstToAsync(String queueName) {
        return pollLastAndOfferFirstToAsync(queueName, 0, TimeUnit.SECONDS);
    }

    @Override
    public int remainingCapacity() {
        return Integer.MAX_VALUE;
    }

    @Override
    public int drainTo(Collection c) {
        return get(drainToAsync(c));
    }

    @Override
    public RFuture drainToAsync(Collection c) {
        if (c == null) {
            throw new NullPointerException();
        }

        return commandExecutor.evalWriteAsync(getRawName(), codec, new RedisCommand("EVAL", new ListDrainToDecoder(c)),
              "local vals = redis.call('lrange', KEYS[1], 0, -1); " +
              "redis.call('del', KEYS[1]); " +
              "return vals", Collections.singletonList(getRawName()));
    }

    @Override
    public int drainTo(Collection c, int maxElements) {
        if (maxElements <= 0) {
            return 0;
        }

        return get(drainToAsync(c, maxElements));
    }

    @Override
    public RFuture drainToAsync(Collection c, int maxElements) {
        if (c == null) {
            throw new NullPointerException();
        }
        return commandExecutor.evalWriteAsync(getRawName(), codec, new RedisCommand("EVAL", new ListDrainToDecoder(c)),
                "local elemNum = math.min(ARGV[1], redis.call('llen', KEYS[1])) - 1;" +
                        "local vals = redis.call('lrange', KEYS[1], 0, elemNum); " +
                        "redis.call('ltrim', KEYS[1], elemNum + 1, -1); " +
                        "return vals",
                Collections.singletonList(getRawName()), maxElements);
    }

    @Override
    public int subscribeOnElements(Consumer consumer) {
        return commandExecutor.getConnectionManager().getElementsSubscribeService().subscribeOnElements(this::takeAsync, consumer);
    }

    @Override
    public void unsubscribe(int listenerId) {
        commandExecutor.getConnectionManager().getElementsSubscribeService().unsubscribe(listenerId);
    }

}    

    

    

            

    

            



    
    






    
© 2015 - 2024 Weber Informatics LLC | Privacy Policy