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//
// ========================================================================
// Copyright (c) 1995-2012 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.jmx;
import java.lang.management.ManagementFactory;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;
import java.util.Map;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.remote.JMXConnectorServer;
import javax.management.remote.JMXConnectorServerFactory;
import javax.management.remote.JMXServiceURL;
import org.eclipse.jetty.util.component.AbstractLifeCycle;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.thread.ShutdownThread;
/* ------------------------------------------------------------ */
/**
* AbstractLifeCycle wrapper for JMXConnector Server
*/
public class ConnectorServer extends AbstractLifeCycle
{
private static final Logger LOG = Log.getLogger(ConnectorServer.class);
JMXConnectorServer _connectorServer;
Registry _registry;
/* ------------------------------------------------------------ */
/**
* Constructs connector server
*
* @param serviceURL the address of the new connector server.
* The actual address of the new connector server, as returned
* by its getAddress method, will not necessarily be exactly the same.
* @param name object name string to be assigned to connector server bean
* @throws Exception
*/
public ConnectorServer(JMXServiceURL serviceURL, String name)
throws Exception
{
this(serviceURL, null, name);
}
/* ------------------------------------------------------------ */
/**
* Constructs connector server
*
* @param svcUrl the address of the new connector server.
* The actual address of the new connector server, as returned
* by its getAddress method, will not necessarily be exactly the same.
* @param environment a set of attributes to control the new connector
* server's behavior. This parameter can be null. Keys in this map must
* be Strings. The appropriate type of each associated value depends on
* the attribute. The contents of environment are not changed by this call.
* @param name object name string to be assigned to connector server bean
* @throws Exception
*/
public ConnectorServer(JMXServiceURL svcUrl, Map<String,?> environment, String name)
throws Exception
{
String urlPath = svcUrl.getURLPath();
int idx = urlPath.indexOf("rmi://");
if (idx > 0)
{
String hostPort = urlPath.substring(idx+6, urlPath.indexOf('/', idx+6));
String regHostPort = startRegistry(hostPort);
if (regHostPort != null) {
urlPath = urlPath.replace(hostPort,regHostPort);
svcUrl = new JMXServiceURL(svcUrl.getProtocol(), svcUrl.getHost(), svcUrl.getPort(), urlPath);
}
}
MBeanServer mbeanServer = ManagementFactory.getPlatformMBeanServer();
_connectorServer = JMXConnectorServerFactory.newJMXConnectorServer(svcUrl, environment, mbeanServer);
mbeanServer.registerMBean(_connectorServer,new ObjectName(name));
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.util.component.AbstractLifeCycle#doStart()
*/
@Override
public void doStart()
throws Exception
{
_connectorServer.start();
ShutdownThread.register(0, this);
LOG.info("JMX Remote URL: {}", _connectorServer.getAddress().toString());
}
/* ------------------------------------------------------------ */
/**
* @see org.eclipse.jetty.util.component.AbstractLifeCycle#doStop()
*/
@Override
public void doStop()
throws Exception
{
ShutdownThread.deregister(this);
_connectorServer.stop();
stopRegistry();
}
/**
* Check that local RMI registry is used, and ensure it is started. If local RMI registry is being used and not started, start it.
*
* @param hostPath
* hostname and port number of RMI registry
* @throws Exception
*/
private String startRegistry(String hostPath) throws Exception
{
int rmiPort = 1099; // default RMI registry port
String rmiHost = hostPath;
int idx = hostPath.indexOf(':');
if (idx > 0)
{
rmiPort = Integer.parseInt(hostPath.substring(idx + 1));
rmiHost = hostPath.substring(0,idx);
}
// Verify that local registry is being used
InetAddress hostAddress = InetAddress.getByName(rmiHost);
if(hostAddress.isLoopbackAddress())
{
if (rmiPort == 0)
{
ServerSocket socket = new ServerSocket(0);
rmiPort = socket.getLocalPort();
socket.close();
}
else
{
try
{
// Check if a local registry is already running
LocateRegistry.getRegistry(rmiPort).list();
return null;
}
catch (Exception ex)
{
LOG.ignore(ex);
}
}
_registry = LocateRegistry.createRegistry(rmiPort);
Thread.sleep(1000);
rmiHost = InetAddress.getLocalHost().getCanonicalHostName();
return rmiHost + ':' + Integer.toString(rmiPort);
}
return null;
}
private void stopRegistry()
{
if (_registry != null)
{
try
{
UnicastRemoteObject.unexportObject(_registry,true);
}
catch (Exception ex)
{
LOG.ignore(ex);
}
}
}
}
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