/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This 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 (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.management.jmx.impl;
import org.exoplatform.commons.utils.SecurityHelper;
import org.exoplatform.management.jmx.annotations.NameTemplate;
import org.exoplatform.management.spi.ManagedResource;
import org.exoplatform.management.spi.ManagementProvider;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.MBeanRegistrationException;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.RuntimeOperationsException;
import javax.management.modelmbean.InvalidTargetObjectTypeException;
import javax.management.modelmbean.ModelMBeanInfo;
/**
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
public class JMXManagementProvider implements ManagementProvider
{
/**
* The logger
*/
private static final Log LOG = ExoLogger.getLogger("exo.kernel.container.JMXManagementProvider");
/** . */
private final MBeanServer server;
public JMXManagementProvider()
{
this(MBeanServerFactory.createMBeanServer());
}
public JMXManagementProvider(MBeanServer server)
{
this.server = server;
}
public Object manage(ManagedResource context)
{
if (context == null)
{
throw new IllegalArgumentException("The context cannot be null");
}
ExoModelMBean mbean = null;
try
{
ExoMBeanInfoBuilder infoBuilder = new ExoMBeanInfoBuilder(context.getMetaData());
ModelMBeanInfo info = infoBuilder.build();
mbean = new ExoModelMBean(context, context.getResource(), info);
}
catch (IllegalArgumentException e)
{
LOG.warn("Could not create the ExoModelMBean for the class " + context.getResource() == null ? null : context
.getResource().getClass(), e);
}
catch (RuntimeOperationsException e)
{
LOG.warn("Could not create the ExoModelMBean for the class " + context.getResource() == null ? null : context
.getResource().getClass(), e);
}
catch (InstanceNotFoundException e)
{
LOG.warn("Could not create the ExoModelMBean for the class " + context.getResource() == null ? null : context
.getResource().getClass(), e);
}
catch (MBeanException e)
{
LOG.warn("Could not create the ExoModelMBean for the class " + context.getResource() == null ? null : context
.getResource().getClass(), e);
}
catch (InvalidTargetObjectTypeException e)
{
LOG.warn("Could not create the ExoModelMBean for the class " + context.getResource() == null ? null : context
.getResource().getClass(), e);
}
//
if (mbean != null)
{
ObjectName on = null;
PropertiesInfo oni = PropertiesInfo.resolve(context.getResource().getClass(), NameTemplate.class);
if (oni != null)
{
try
{
Map<String, String> foo = oni.resolve(context.getResource());
on = JMX.createObjectName("exo", foo);
}
catch (MalformedObjectNameException e)
{
LOG.warn("Could not create the ObjectName for the class " + context.getResource().getClass(), e);
}
}
if (on != null)
{
// Merge with the container hierarchy context
try
{
Map<String, String> props = new LinkedHashMap<String, String>();
// Merge scoping properties
List<MBeanScopingData> list = context.getScopingData(MBeanScopingData.class);
// Read in revert order because wee received list of parents in upward order
for (int i = list.size(); i > 0; i--)
{
MBeanScopingData scopingData = list.get(i - 1);
props.putAll(scopingData);
}
// Julien : I know it's does not look great but it's necessary
// for compiling under Java 5 and Java 6 properly. The methods
// ObjectName#getKeyPropertyList() returns an Hashtable with Java 5
// and a Hashtable<String, String> with Java 6.
for (Object o : on.getKeyPropertyList().entrySet())
{
Map.Entry entry = (Map.Entry)o;
String key = (String)entry.getKey();
String value = (String)entry.getValue();
props.put(key, value);
}
//
on = JMX.createObjectName(on.getDomain(), props);
//
attemptToRegister(on, mbean);
//
return on;
}
catch (MalformedObjectNameException e)
{
LOG.warn("Could not register the MBean for the class " + context.getResource().getClass(), e);
}
}
}
//
return null;
}
private void attemptToRegister(final ObjectName name, final Object mbean)
{
synchronized (server)
{
if (server.isRegistered(name))
{
if (LOG.isTraceEnabled())
{
LOG.trace("The MBean '" + name + " has already been registered, it will be unregistered and then re-registered");
}
try
{
SecurityHelper.doPrivilegedExceptionAction(new PrivilegedExceptionAction<Void>()
{
public Void run() throws Exception
{
server.unregisterMBean(name);
return null;
}
});
}
catch (PrivilegedActionException e)
{
throw new RuntimeException("Failed to unregister MBean '" + name + " due to " + e.getMessage(), e);
}
}
try
{
SecurityHelper.doPrivilegedExceptionAction(new PrivilegedExceptionAction<Void>()
{
public Void run() throws Exception
{
server.registerMBean(mbean, name);
return null;
}
});
}
catch (PrivilegedActionException e)
{
throw new RuntimeException("Failed to register MBean '" + name + " due to " + e.getMessage(), e);
}
}
}
public void unmanage(Object key)
{
final ObjectName name = (ObjectName)key;
try
{
try
{
SecurityHelper.doPrivilegedExceptionAction(new PrivilegedExceptionAction<Void>()
{
public Void run() throws Exception
{
if (server.isRegistered(name))
{
server.unregisterMBean(name);
}
return null;
}
});
}
catch (PrivilegedActionException pae)
{
Throwable cause = pae.getCause();
if (cause instanceof InstanceNotFoundException)
{
throw (InstanceNotFoundException)cause;
}
else if (cause instanceof MBeanRegistrationException)
{
throw (MBeanRegistrationException)cause;
}
else if (cause instanceof RuntimeException)
{
throw (RuntimeException)cause;
}
else
{
throw new RuntimeException(cause);
}
}
}
catch (InstanceNotFoundException e)
{
LOG.warn("Could not unregister the MBean " + name, e);
}
catch (MBeanRegistrationException e)
{
LOG.warn("Could not unregister the MBean " + name, e);
}
}
}