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/**
* Copyright (C) 2005-2007 - Bull S.A.S.
*
* CAROL: Common Architecture for RMI ObjectWeb Layer
*
* 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 2.1 of the License, or 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* --------------------------------------------------------------------------
* $Id: MBeanUtils.java 1520 2007-12-03 13:04:35Z loris $
* --------------------------------------------------------------------------
*/
package org.ow2.carol.util.mbean;
import java.util.List;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import org.apache.commons.logging.Log;
import org.ow2.carol.util.configuration.ConfigurationException;
import org.ow2.carol.util.configuration.ProtocolConfigurationImplMBean;
import org.ow2.carol.util.configuration.ServerConfigurationImplMBean;
/**
* This class is used to manage mbean registration.
* All MBean stuff should go here, all imports on javax.management are in this class.
* So if carol is not initialized with MBeanServer, JMX jars are not required at runtime.
* @author Florent Benoit
*/
public class MBeanUtils {
/**
* MBeanServer
*/
private static MBeanServer mbeanServer = null;
/**
* Utility class, no constructor
*/
private MBeanUtils() {
}
/**
* Init MBeanServer
* @param logger the logger to use to log messages
* @param agentId the agent identifier of the MBeanServer to retrieve
* @throws ConfigurationException if the registration failed
*/
protected static void initMBeanServer(final Log logger, final String agentId)
throws ConfigurationException {
List mbeanServers = MBeanServerFactory.findMBeanServer(agentId);
if (mbeanServers.size() == 0) {
throw new ConfigurationException("No MBean Servers were found.");
}
if (mbeanServers.size() > 1) {
if (logger.isDebugEnabled()) {
logger.debug("Take first MBeanServer of the list");
}
}
mbeanServer = (MBeanServer) mbeanServers.get(0);
}
public static void registerServerConfigurationMBean(
final ServerConfigurationImplMBean serverConfiguration,
final Log logger,
final String domainName,
final String serverName,
final String agentId)
throws ConfigurationException {
// get MBeanServer if not present
if (mbeanServer == null) {
initMBeanServer(logger, agentId);
}
StringBuffer sb = new StringBuffer(domainName);
sb.append(":type=carol");
sb.append(",name=serverConfiguration");
sb.append(",J2EEServer=");
sb.append(serverName);
ObjectName on = null;
try {
on = new ObjectName(sb.toString());
} catch (MalformedObjectNameException e) {
throw new ConfigurationException("Cannot build ObjectName for the server configuration", e);
}
// Set the objectname
serverConfiguration.setObjectName(on.toString());
try {
mbeanServer.registerMBean(serverConfiguration, on);
} catch (Exception e) {
throw new ConfigurationException("Cannot register MBean '" + on + "' in MBeanServer", e);
}
}
/**
* Register a ProtocolConfiguration object in MBeanServer
* @param protocolConfiguration the configuration to register
* @param logger the logger to use to log messages
* @param domainName the name of the JOnAS domain
* @param serverName the name of the server (for ObjectName)
* @param agentId the agent identifier of the MBeanServer to retrieve
* @throws ConfigurationException if the registration failed
*/
public static void registerProtocolConfigurationMBean(
final ProtocolConfigurationImplMBean protocolConfiguration,
final Log logger,
final String domainName,
final String serverName,
final String agentId)
throws ConfigurationException {
// get MBeanServer if not present
if (mbeanServer == null) {
initMBeanServer(logger, agentId);
}
StringBuffer sb = new StringBuffer(domainName);
sb.append(":j2eeType=JNDIResource");
sb.append(",name=");
sb.append(protocolConfiguration.getName());
sb.append(",J2EEServer=");
sb.append(serverName);
ObjectName on = null;
try {
on = new ObjectName(sb.toString());
} catch (MalformedObjectNameException e) {
throw new ConfigurationException("Cannot build ObjectName for configuration '" + protocolConfiguration.getName() + "'", e);
}
// Set the objectname
protocolConfiguration.setobjectName(on.toString());
try {
mbeanServer.registerMBean(protocolConfiguration, on);
} catch (Exception e) {
throw new ConfigurationException("Cannot register MBean '" + on + "' in MBeanServer", e);
}
}
}
