/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Sam
*/
package com.caucho.quercus.lib.resin;
import com.caucho.jmx.Jmx;
import com.caucho.quercus.QuercusModuleException;
import com.caucho.quercus.annotation.Optional;
import com.caucho.quercus.env.ArrayValue;
import com.caucho.quercus.env.ArrayValueImpl;
import com.caucho.quercus.env.Env;
import com.caucho.server.cluster.Cluster;
import com.caucho.server.cluster.Server;
import com.caucho.server.resin.Resin;
import com.caucho.server.admin.RemoteMBeanConnectionFactory;
import com.caucho.util.L10N;
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import java.io.IOException;
import java.util.Comparator;
import java.util.Set;
import java.util.TreeSet;
import java.util.logging.*;
public class MBeanServer {
private static final L10N L = new L10N(MBeanServer.class);
private static final Logger log
= Logger.getLogger(MBeanServer.class.getName());
private static final Comparator<ObjectName> OBJECTNAME_COMPARATOR;
private final MBeanServerConnection _server;
/**
* Create an MBeanServer that connects to a remote server.
*
* @param remoteUrl a url that connects to a
* {@link com.caucho.services.jmx.JMXService} ussing the hessian protocol.
*/
public MBeanServer(@Optional String serverId)
{
if (serverId == null
|| "".equals(serverId)
|| Server.getCurrent().getServerId().equals(serverId)) {
_server = Jmx.getGlobalMBeanServer();
}
else {
_server = RemoteMBeanConnectionFactory.create(serverId);
}
}
/**
* Perform a jmx lookup to retrieve an {@link MBean} object.
*
* If the optional name is not provided, the mbean for the current web-app
* is returned.
*
* An unqualified name does not contain a `:' and is used to find an mbean
* in the context of the current web-app.
*
* A fully qualified name contains a `:' and is used to find any mbean within the
* server.
*
* @param name the name to lookup
*
* @return the mbean object, or null if it is not found.
*/
public MBean lookup(Env env, @Optional String name)
{
try {
if (name == null || name.length() == 0)
return null;
ObjectName objectName = Jmx.getObjectName(name);
if (_server.isRegistered(objectName))
return new MBean(_server, objectName);
else
return null;
}
catch (MalformedObjectNameException e) {
throw new QuercusModuleException(L.l("'{0}' is an invalid JMX name.\n{1}",
name, e.getMessage()), e);
}
catch (IOException e) {
log.log(Level.FINE, e.toString(), e);
return null;
}
}
/**
* Returns an array of {@link MBean}s that match a JMX pattern.
* If the name contains a ":", it is a query in the global jmx namespace.
* If the name does not contain a ":", it is a search in the JMX namespace
* of the current web application.
*/
public ArrayValue query(Env env, String pattern)
{
try {
ArrayValueImpl values = new ArrayValueImpl();
ObjectName patternObjectName;
patternObjectName = new ObjectName(pattern);
Set<ObjectName> objectNames;
objectNames = _server.queryNames(patternObjectName, null);
if (objectNames == null)
return values;
TreeSet<ObjectName> sortedObjectNames
= new TreeSet<ObjectName>(OBJECTNAME_COMPARATOR);
sortedObjectNames.addAll(objectNames);
for (ObjectName objectName : sortedObjectNames)
values.put(env.wrapJava(new MBean(_server, objectName)));
return values;
}
catch (MalformedObjectNameException e) {
throw new QuercusModuleException(e);
}
catch (IOException e) {
throw new QuercusModuleException(e);
}
}
public String toString()
{
return "MBeanServer[" + _server + "]";
}
static {
OBJECTNAME_COMPARATOR = new Comparator<ObjectName>() {
public int compare(ObjectName o1, ObjectName o2)
{
if (o1 == null)
return -1;
if (o2 == null)
return 1;
return o1.getCanonicalName().compareTo(o2.getCanonicalName());
}
};
}
}