001package org.eclipse.aether.named.redisson; 002 003/* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022import org.eclipse.aether.named.support.AdaptedSemaphoreNamedLock; 023import org.eclipse.aether.named.support.NamedLockSupport; 024import org.redisson.api.RSemaphore; 025 026import javax.inject.Named; 027import javax.inject.Singleton; 028import java.util.concurrent.TimeUnit; 029 030/** 031 * Provider of {@link RedissonSemaphoreNamedLockFactory} using Redisson and {@link org.redisson.api.RSemaphore}. 032 */ 033@Singleton 034@Named( RedissonSemaphoreNamedLockFactory.NAME ) 035public class RedissonSemaphoreNamedLockFactory 036 extends RedissonNamedLockFactorySupport 037{ 038 public static final String NAME = "semaphore-redisson"; 039 040 @Override 041 protected NamedLockSupport createLock( final String name ) 042 { 043 return new AdaptedSemaphoreNamedLock( 044 name, this, new RedissonSemaphore( redissonClient.getSemaphore( NAME_PREFIX + name ) ) 045 ); 046 } 047 048 private static final class RedissonSemaphore implements AdaptedSemaphoreNamedLock.AdaptedSemaphore 049 { 050 private final RSemaphore semaphore; 051 052 private RedissonSemaphore( final RSemaphore semaphore ) 053 { 054 semaphore.trySetPermits( Integer.MAX_VALUE ); 055 this.semaphore = semaphore; 056 } 057 058 @Override 059 public boolean tryAcquire( final int perms, final long time, final TimeUnit unit ) 060 throws InterruptedException 061 { 062 return semaphore.tryAcquire( perms, time, unit ); 063 } 064 065 @Override 066 public void release( final int perms ) 067 { 068 semaphore.release( perms ); 069 } 070 } 071}