com.smartitengineering.jetty.session.replication.SessionReplicationAPI.java Source code

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Here is the source code for com.smartitengineering.jetty.session.replication.SessionReplicationAPI.java

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/*
 *
 * This module intended to be used for session replication of Jetty via HBase
 * and later will be cached via Ehcache
 *
 * Copyright (C) 2010  Imran M Yousuf (imyousuf@smartitengineering.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
package com.smartitengineering.jetty.session.replication;

import com.smartitengineering.dao.common.CommonReadDao;
import com.smartitengineering.dao.common.CommonWriteDao;
import com.smartitengineering.util.bean.BeanFactoryRegistrar;
import com.smartitengineering.util.bean.annotations.Aggregator;
import com.smartitengineering.util.bean.annotations.InjectableField;
import net.sf.ehcache.Cache;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 *
 * @author imyousuf
 */
@Aggregator(contextName = "com.smartitengineering.jetty.session.replication")
public class SessionReplicationAPI {

    public static final String INITIALIZER_CLASS_SYS_PROP = "com.smartitengineering.jetty.session.replication.init";
    private static SessionReplicationAPI api;
    private static final Logger LOGGER = LoggerFactory.getLogger(SessionReplicationAPI.class);

    public static SessionReplicationAPI getInstance() {
        if (api == null) {
            LOGGER.info("Initializing Replication API");
            init();
        }
        LOGGER.info("Returning initialized API");
        return api;
    }

    private synchronized static void init() {
        if (api == null) {
            api = new SessionReplicationAPI();
            String val = System.getProperty(INITIALIZER_CLASS_SYS_PROP);
            if (LOGGER.isInfoEnabled()) {
                LOGGER.info("System parameter of the initializer " + val);
            }
            if (StringUtils.isNotBlank(val)) {
                try {
                    Class.forName(val).newInstance();
                } catch (Exception ex) {
                    LOGGER.error("Could not initialize initialzer class properly!", ex);
                }
            }
            BeanFactoryRegistrar.aggregate(api);
        }
    }

    @InjectableField(beanName = "dataReader")
    private CommonReadDao<SessionData, SessionDataId> dataReader;
    @InjectableField(beanName = "dataWriter")
    private CommonWriteDao<SessionData> dataWriter;
    @InjectableField(beanName = "idReader")
    private CommonReadDao<SessionId, String> idReader;
    @InjectableField(beanName = "idWriter")
    private CommonWriteDao<SessionId> idWriter;
    @InjectableField(beanName = "sessionCache")
    private Cache sessionCache;
    @InjectableField(beanName = "sessionIdCache")
    private Cache sessionIdCache;

    public Cache getSessionCache() {
        return sessionCache;
    }

    public Cache getSessionIdCache() {
        return sessionIdCache;
    }

    public CommonReadDao<SessionData, SessionDataId> getDataReader() {
        return dataReader;
    }

    public CommonWriteDao<SessionData> getDataWriter() {
        return dataWriter;
    }

    public CommonReadDao<SessionId, String> getIdReader() {
        return idReader;
    }

    public CommonWriteDao<SessionId> getIdWriter() {
        return idWriter;
    }
}