// ========================================================================
// $Id: HttpServerMBean.java,v 1.16 2005/12/04 11:43:21 gregwilkins Exp $
// Copyright 1999-2004 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================
package org.openqa.jetty.http.jmx;
import java.util.HashMap;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.ObjectName;
import javax.management.modelmbean.InvalidTargetObjectTypeException;
import javax.management.modelmbean.ModelMBean;
import org.apache.commons.logging.Log;
import org.openqa.jetty.log.LogFactory;
import org.openqa.jetty.http.HttpServer;
import org.openqa.jetty.http.Version;
import org.openqa.jetty.util.ComponentEvent;
import org.openqa.jetty.util.ComponentListener;
import org.openqa.jetty.util.LogSupport;
import org.openqa.jetty.util.jmx.LifeCycleMBean;
import org.openqa.jetty.util.jmx.ModelMBeanImpl;
/* ------------------------------------------------------------ */
/** HttpServer MBean.
* This Model MBean class provides the mapping for HttpServer
* management methods. It also registers itself as a membership
* listener of the HttpServer, so it can create and destroy MBean
* wrappers for listeners and contexts.
*
* @version $Revision: 1.16 $
* @author Greg Wilkins (gregw)
*/
public class HttpServerMBean extends LifeCycleMBean
implements ComponentListener
{
private static Log log = LogFactory.getLog(HttpServerMBean.class);
private HttpServer _httpServer;
private HashMap _mbeanMap = new HashMap();
/* ------------------------------------------------------------ */
/** Constructor.
* @exception MBeanException
* @exception InstanceNotFoundException
*/
protected HttpServerMBean(HttpServer httpServer)
throws MBeanException, InstanceNotFoundException
{
_httpServer=httpServer;
_httpServer.addEventListener(this);
try{super.setManagedResource(_httpServer,"objectReference");}
catch(InvalidTargetObjectTypeException e){log.warn(LogSupport.EXCEPTION,e);}
}
/* ------------------------------------------------------------ */
/** Constructor.
* @exception MBeanException
* @exception InstanceNotFoundException
*/
public HttpServerMBean()
throws MBeanException, InstanceNotFoundException
{
this(new HttpServer());
}
/* ------------------------------------------------------------ */
public void setManagedResource(Object o,String s)
throws MBeanException, InstanceNotFoundException, InvalidTargetObjectTypeException
{
if (o!=null)
((HttpServer)o).addEventListener(this);
super.setManagedResource(o,s);
}
/* ------------------------------------------------------------ */
protected void defineManagedResource()
{
super.defineManagedResource();
defineAttribute("listeners",READ_ONLY);
defineAttribute("contexts",READ_ONLY);
defineAttribute("version",READ_ONLY,ON_MBEAN);
defineAttribute("components",READ_ONLY,ON_MBEAN);
defineAttribute("requestLog");
defineAttribute("trace");
defineOperation("addListener",new String[]{"java.lang.String"},IMPACT_ACTION);
defineOperation("addListener",new String[]{"org.openqa.jetty.util.InetAddrPort"},IMPACT_ACTION);
defineOperation("addListener",new String[]{"org.openqa.jetty.http.HttpListener"},IMPACT_ACTION);
defineOperation("removeListener",new String[]{"org.openqa.jetty.http.HttpListener"},IMPACT_ACTION);
defineOperation("addContext",new String[]{"org.openqa.jetty.http.HttpContext"},IMPACT_ACTION);
defineOperation("removeContext",new String[]{"org.openqa.jetty.http.HttpContext"},IMPACT_ACTION);
defineOperation("addContext",new String[]{"java.lang.String"},IMPACT_ACTION);
defineOperation("addContext",new String[]{"java.lang.String","java.lang.String"},IMPACT_ACTION);
defineAttribute("requestsPerGC");
defineAttribute("statsOn");
defineAttribute("statsOnMs");
defineOperation("statsReset",IMPACT_ACTION);
defineAttribute("connections");
defineAttribute("connectionsOpen");
defineAttribute("connectionsOpenMin");
defineAttribute("connectionsOpenMax");
defineAttribute("connectionsDurationAve");
defineAttribute("connectionsDurationMin");
defineAttribute("connectionsDurationMax");
defineAttribute("connectionsDurationTotal");
defineAttribute("connectionsRequestsAve");
defineAttribute("connectionsRequestsMin");
defineAttribute("connectionsRequestsMax");
defineAttribute("errors");
defineAttribute("requests");
defineAttribute("requestsActive");
defineAttribute("requestsActiveMin");
defineAttribute("requestsActiveMax");
defineAttribute("requestsDurationAve");
defineAttribute("requestsDurationMin");
defineAttribute("requestsDurationMax");
defineOperation("stop",new String[]{"java.lang.Boolean.TYPE"},IMPACT_ACTION);
defineOperation("save",new String[]{"java.lang.String"},IMPACT_ACTION);
defineOperation("destroy",IMPACT_ACTION);
}
/* ------------------------------------------------------------ */
public synchronized void addComponent(ComponentEvent event)
{
try
{
if(log.isDebugEnabled())log.debug("Component added "+event);
Object o=event.getComponent();
ModelMBean mbean=ModelMBeanImpl.mbeanFor(o);
if (mbean==null)
log.warn("No MBean for "+o);
else
{
ObjectName oName=null;
if (mbean instanceof ModelMBeanImpl)
{
((ModelMBeanImpl)mbean).setBaseObjectName(getObjectName().toString());
oName=
getMBeanServer().registerMBean(mbean,null).getObjectName();
}
else
{
oName=uniqueObjectName(getMBeanServer(),
o,
getObjectName().toString());
oName=getMBeanServer().registerMBean(mbean,oName)
.getObjectName();
}
Holder holder = new Holder(oName,mbean);
_mbeanMap.put(o,holder);
}
}
catch(Exception e)
{
log.warn(LogSupport.EXCEPTION,e);
}
}
/* ------------------------------------------------------------ */
public String getVersion()
{
return Version.getDetail();
}
/* ------------------------------------------------------------ */
public ObjectName[] getComponents()
{
Holder[] h=(Holder[])_mbeanMap.values().toArray(new Holder[_mbeanMap.size()]);
ObjectName[] on = new ObjectName[h.length];
for (int i=0;i<on.length;i++)
on[i]=h[i].oName;
return on;
}
/* ------------------------------------------------------------ */
public synchronized void removeComponent(ComponentEvent event)
{
if(log.isDebugEnabled())log.debug("Component removed "+event);
try
{
Object o=event.getComponent();
Holder holder=(Holder)_mbeanMap.remove(o);
if (holder!=null)
getMBeanServer().unregisterMBean(holder.oName);
else if (o==_httpServer)
getMBeanServer().unregisterMBean(this.getObjectName());
}
catch(Exception e)
{
log.warn(LogSupport.EXCEPTION,e);
}
}
/* ------------------------------------------------------------ */
/**
* @param ok
*/
public void postRegister(Boolean ok)
{
super.postRegister(ok);
}
/* ------------------------------------------------------------ */
public void postDeregister()
{
_httpServer.removeEventListener(this);
_httpServer=null;
if (_mbeanMap!=null)
_mbeanMap.clear();
_mbeanMap=null;
super.postDeregister();
}
/* ------------------------------------------------------------ */
/* ------------------------------------------------------------ */
private static class Holder
{
Holder(ObjectName oName,Object mbean){ this.oName=oName; this.mbean=mbean;}
ObjectName oName;
Object mbean;
}
}