Java tutorial
/** * Copyright 2014 Nikita Koksharov, Nickolay Borbit * * 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.List; import java.util.concurrent.TimeUnit; import org.redisson.client.codec.Codec; import org.redisson.client.protocol.RedisCommands; import org.redisson.command.CommandAsyncExecutor; import org.redisson.core.RBlockingDeque; import io.netty.util.concurrent.Future; /** * <p>Distributed and concurrent implementation of {@link java.util.concurrent.BlockingDeque}. * * <p>Queue size limited by Redis server memory amount. This is why {@link #remainingCapacity()} always * returns <code>Integer.MAX_VALUE</code> * * @author Nikita Koksharov */ public class RedissonBlockingDeque<V> extends RedissonDeque<V> implements RBlockingDeque<V> { private final RedissonBlockingQueue<V> blockingQueue; protected RedissonBlockingDeque(CommandAsyncExecutor commandExecutor, String name) { super(commandExecutor, name); blockingQueue = new RedissonBlockingQueue<V>(commandExecutor, name); } protected RedissonBlockingDeque(Codec codec, CommandAsyncExecutor commandExecutor, String name) { super(codec, commandExecutor, name); blockingQueue = new RedissonBlockingQueue<V>(codec, commandExecutor, name); } @Override public Future<Boolean> putAsync(V e) { return offerAsync(e); } /* * (non-Javadoc) * @see java.util.concurrent.BlockingQueue#put(java.lang.Object) */ @Override public void put(V e) throws InterruptedException { offer(e); } @Override public boolean offer(V e, long timeout, TimeUnit unit) throws InterruptedException { return offer(e); } @Override public Future<V> takeAsync() { return blockingQueue.takeAsync(); } /* * (non-Javadoc) * @see java.util.concurrent.BlockingQueue#take() */ @Override public V take() throws InterruptedException { return blockingQueue.take(); } @Override public Future<V> pollAsync(long timeout, TimeUnit unit) { return blockingQueue.pollAsync(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 blockingQueue.poll(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 blockingQueue.pollFromAny(timeout, unit); } /* * (non-Javadoc) * @see org.redisson.core.RBlockingQueueAsync#pollFromAnyAsync(long, java.util.concurrent.TimeUnit, java.lang.String[]) */ @Override public Future<V> pollFromAnyAsync(long timeout, TimeUnit unit, String... queueNames) { return blockingQueue.pollFromAnyAsync(timeout, unit); } @Override public Future<V> pollLastAndOfferFirstToAsync(String queueName, long timeout, TimeUnit unit) { return blockingQueue.pollLastAndOfferFirstToAsync(queueName, timeout, unit); } @Override public V pollLastAndOfferFirstTo(String queueName, long timeout, TimeUnit unit) throws InterruptedException { return blockingQueue.pollLastAndOfferFirstTo(queueName, timeout, unit); } @Override public int remainingCapacity() { return Integer.MAX_VALUE; } @Override public int drainTo(Collection<? super V> c) { return blockingQueue.drainTo(c); } @Override public Future<Integer> drainToAsync(Collection<? super V> c) { return blockingQueue.drainToAsync(c); } @Override public int drainTo(Collection<? super V> c, int maxElements) { return blockingQueue.drainTo(c, maxElements); } @Override public Future<Integer> drainToAsync(Collection<? super V> c, int maxElements) { return blockingQueue.drainToAsync(c, maxElements); } @Override public Future<Void> putFirstAsync(V e) { return addFirstAsync(e); } @Override public Future<Void> putLastAsync(V e) { return addLastAsync(e); } @Override public void putFirst(V e) throws InterruptedException { addFirst(e); } @Override public void putLast(V e) throws InterruptedException { addLast(e); } @Override public boolean offerFirst(V e, long timeout, TimeUnit unit) throws InterruptedException { addFirst(e); return true; } @Override public boolean offerLast(V e, long timeout, TimeUnit unit) throws InterruptedException { addLast(e); return true; } @Override public V takeFirst() throws InterruptedException { Future<V> res = takeFirstAsync(); return res.await().getNow(); } @Override public Future<V> takeFirstAsync() { return takeAsync(); } @Override public Future<V> takeLastAsync() { return commandExecutor.writeAsync(getName(), codec, RedisCommands.BRPOP_VALUE, getName(), 0); } @Override public V takeLast() throws InterruptedException { Future<V> res = takeLastAsync(); return res.await().getNow(); } @Override public Future<V> pollFirstAsync(long timeout, TimeUnit unit) { return pollAsync(timeout, unit); } @Override public V pollFirstFromAny(long timeout, TimeUnit unit, String... queueNames) throws InterruptedException { Future<V> res = pollFirstFromAnyAsync(timeout, unit, queueNames); return res.await().getNow(); } @Override public Future<V> pollFirstFromAnyAsync(long timeout, TimeUnit unit, String... queueNames) { return pollFromAnyAsync(timeout, unit, queueNames); } @Override public V pollLastFromAny(long timeout, TimeUnit unit, String... queueNames) throws InterruptedException { Future<V> res = pollLastFromAnyAsync(timeout, unit, queueNames); return res.await().getNow(); } @Override public Future<V> pollLastFromAnyAsync(long timeout, TimeUnit unit, String... queueNames) { List<Object> params = new ArrayList<Object>(queueNames.length + 1); params.add(getName()); for (Object name : queueNames) { params.add(name); } params.add(unit.toSeconds(timeout)); return commandExecutor.writeAsync(getName(), codec, RedisCommands.BRPOP_VALUE, params.toArray()); } @Override public V pollFirst(long timeout, TimeUnit unit) throws InterruptedException { Future<V> res = pollFirstAsync(timeout, unit); return res.await().getNow(); } @Override public Future<V> pollLastAsync(long timeout, TimeUnit unit) { return commandExecutor.writeAsync(getName(), codec, RedisCommands.BRPOP_VALUE, getName(), unit.toSeconds(timeout)); } @Override public V pollLast(long timeout, TimeUnit unit) throws InterruptedException { Future<V> res = pollLastAsync(timeout, unit); return res.await().getNow(); } }