001/* 002 * (C) Copyright 2014-2015 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Thierry Delprat 018 * Florent Guillaume 019 */ 020package org.nuxeo.ecm.core.redis.contribs; 021 022import org.apache.commons.logging.Log; 023import org.apache.commons.logging.LogFactory; 024import org.nuxeo.ecm.core.api.NuxeoException; 025import org.nuxeo.ecm.core.redis.RedisAdmin; 026import org.nuxeo.ecm.core.redis.RedisCallable; 027import org.nuxeo.ecm.core.redis.RedisExecutor; 028import org.nuxeo.ecm.core.uidgen.AbstractUIDSequencer; 029import org.nuxeo.runtime.api.Framework; 030 031import redis.clients.jedis.Jedis; 032import redis.clients.jedis.exceptions.JedisException; 033 034/** 035 * Redis-based UID generator. 036 * 037 * @since 7.4 038 */ 039public class RedisUIDSequencer extends AbstractUIDSequencer { 040 041 protected static final Log log = LogFactory.getLog(RedisUIDSequencer.class); 042 043 protected String namespace; 044 045 @Override 046 public void init() { 047 RedisAdmin redisAdmin = Framework.getService(RedisAdmin.class); 048 namespace = redisAdmin.namespace("counters"); 049 } 050 051 @Override 052 public void dispose() { 053 } 054 055 @Override 056 public int getNext(String key) { 057 return (int) getNextLong(key); 058 } 059 060 @Override 061 public long getNextLong(String key) { 062 RedisExecutor executor = Framework.getService(RedisExecutor.class); 063 try { 064 return executor.execute(new RedisCallable<Long>() { 065 @Override 066 public Long call(Jedis jedis) { 067 return jedis.incr(namespace + key); 068 } 069 }); 070 } catch (JedisException e) { 071 throw new NuxeoException(e); 072 } 073 } 074 075}