/*
    * EL4J, the Extension Library for the J2EE, adds incremental enhancements to
    * the spring framework, http://el4j.sf.net
    * Copyright (C) 2009 by ELCA Informatique SA, Av. de la Harpe 22-24,
    * 1000 Lausanne, Switzerland, http://www.elca.ch
    *
    * EL4J is published under the GNU Lesser General Public License (LGPL)
    * Version 2.1. See http://www.gnu.org/licenses/
    *
   * This program 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.
   *
   * For alternative licensing, please contact info@elca.ch
   */
  package ch.elca.el4j.util.socketstatistics;
  
  import java.lang.management.ManagementFactory;
  import java.net.SocketImpl;
  import java.net.SocketImplFactory;
  
  import javax.management.InstanceAlreadyExistsException;
  import javax.management.MBeanRegistrationException;
  import javax.management.MBeanServer;
  import javax.management.MalformedObjectNameException;
  import javax.management.NotCompliantMBeanException;
  import javax.management.ObjectName;
  
  import ch.elca.el4j.util.socketstatistics.genericlogger.GenericLogFactory;
  import ch.elca.el4j.util.socketstatistics.genericlogger.GenericLogger;
  
  /**
   * Implementation of SocketImplFactory for the creation of SocketImplLogger.
   *
   * @svnLink $Revision: 3929 $;$Date: 2009-09-25 16:38:41 +0200 (Fr, 25. Sep 2009) $;$Author: jonasha $;$URL: https://el4j.svn.sourceforge.net/svnroot/el4j/branches/el4j_3_1/el4j/framework/modules/socketstatistics/src/main/java/ch/elca/el4j/util/socketstatistics/LoggerSocketFactory.java $
   *
   * @author Jonas Hauenstein (JHN)
   */
  public class LoggerSocketFactory implements SocketImplFactory {
  
  	/**
  	 * Reference to SocketStatistics.
  	 */
  	private static SocketStatistics s_ss = null;
  
  	/**
  	 * Generic Logger.
  	 */
  	private final GenericLogger m_logger = GenericLogFactory.getLogger(SocketStatistics.class);
  
  	/**
  	 * Modified version which also registers the corresponding MXbean (SocketStatisticsMXBean) on the MBeanServer.
  	 * {@inheritDoc}
  	 */
  	@Override
  	public SocketImpl createSocketImpl() {
  		if (s_ss == null) {
  			s_ss = new SocketStatistics();
  			MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
  			try {
  				ObjectName name = new ObjectName("ch.elca.el4j.util.socketStatistics:type=SocketStatistics");
  				if (!mbs.isRegistered(name)) {
  					mbs.registerMBean(s_ss, name);
  					m_logger.log("info", "MXBean SocketStatisticsMXBean successfully registered on MBeanServer");
  				}
  			} catch (MalformedObjectNameException e) {
  				m_logger.log("info",
  					"Failed to register MXBean SocketStatisticsMXBean on MBeanServer (MalformedObjectNameException)");
  			} catch (NullPointerException e) {
  				m_logger.log("info",
  					"Failed to register MXBean SocketStatisticsMXBean on MBeanServer (NullPointerException)");
  			} catch (InstanceAlreadyExistsException e) {
  				m_logger.log("info",
  					"Failed to register MXBean SocketStatisticsMXBean on MBeanServer (MBean already registered)");
  			} catch (MBeanRegistrationException e) {
  				m_logger.log("info",
  					"Failed to register MXBean SocketStatisticsMXBean on MBeanServer (MBeanRegistrationException)");
  			} catch (NotCompliantMBeanException e) {
  				m_logger.log("info",
  					"Failed to register MXBean SocketStatisticsMXBean on MBeanServer (NotCompliantMBeanException)");
  			}
  
  		}
  		return new SocketImplLogger();
  	}
  
  }