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.RedisExecutor;
027import org.nuxeo.ecm.core.uidgen.AbstractUIDSequencer;
028import org.nuxeo.runtime.api.Framework;
029
030import redis.clients.jedis.exceptions.JedisException;
031
032/**
033 * Redis-based UID generator.
034 *
035 * @since 7.4
036 */
037public class RedisUIDSequencer extends AbstractUIDSequencer {
038
039    protected static final Log log = LogFactory.getLog(RedisUIDSequencer.class);
040
041    protected String namespace;
042
043    @Override
044    public void init() {
045        RedisAdmin redisAdmin = Framework.getService(RedisAdmin.class);
046        namespace = redisAdmin.namespace("counters");
047    }
048
049    @Override
050    public void dispose() {
051    }
052
053    @Override
054    public void initSequence(String key, long id) {
055        RedisExecutor executor = Framework.getService(RedisExecutor.class);
056        try {
057            executor.execute(jedis -> jedis.set(namespace + key, String.valueOf(id)));
058        } catch (JedisException e) {
059            throw new NuxeoException(e);
060        }
061    }
062
063    @Override
064    public long getNextLong(String key) {
065        RedisExecutor executor = Framework.getService(RedisExecutor.class);
066        try {
067            return executor.execute(jedis -> jedis.incr(namespace + key));
068        } catch (JedisException e) {
069            throw new NuxeoException(e);
070        }
071    }
072
073}