/*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @authors tag. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.jboss.arquillian.container.spi.client.protocol.metadata;
import java.io.IOException;
import java.lang.ref.Reference;
import java.lang.ref.WeakReference;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Logger;
import javax.management.MBeanServerConnection;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
/**
* JMXContext
*
* @author <a href="mailto:aslak@redhat.com">Aslak Knutsen</a>
* @version $Revision: $
*/
public class JMXContext extends NamedContext
{
private static final Logger log = Logger.getLogger(JMXContext.class.getName());
private static Set<Reference<MBeanServerConnection>> jmxConnectorRefs =
Collections.synchronizedSet(new HashSet<Reference<MBeanServerConnection>>());
/*
* The Host and Port of a Remote MBean Server
*/
private String host;
private int port;
/*
* A existing MBeanServerConnection provided by the Container
*/
private MBeanServerConnection connection;
public JMXContext(String host, int port)
{
this("no-named", host, port);
}
public JMXContext(String name, String host, int port)
{
super(name);
this.host = host;
this.port = port;
}
public JMXContext(MBeanServerConnection connection)
{
this("no-named", connection);
}
public JMXContext(String name, MBeanServerConnection connection)
{
super(name);
this.connection = connection;
}
/**
* @return the openConnection
*/
public MBeanServerConnection getConnection()
{
if(connection == null)
{
try
{
JMXConnector connector = JMXConnectorFactory.connect(getRemoteJMXURL(), null);
connection = connector.getMBeanServerConnection();
WeakReference<MBeanServerConnection> ref = new JMXConnectorReference(connection, connector);
jmxConnectorRefs.add(ref);
} catch (IOException e) {
throw new RuntimeException("Could not create remote JMX connection: " + this, e);
}
}
return connection;
}
private JMXServiceURL getRemoteJMXURL()
{
try
{
return new JMXServiceURL("service:jmx:rmi:///jndi/rmi://" + host + ":" + port + "/jmxrmi");
}
catch (Exception e)
{
throw new RuntimeException("Could not create JMXServiceURL:" + this, e);
}
}
@Override
public String toString()
{
return "JMXContext [host=" + host + ", port=" + port + ", connection=" + connection + "]";
}
private static class JMXConnectorReference extends WeakReference<MBeanServerConnection>
{
private JMXConnector connector;
public JMXConnectorReference(final MBeanServerConnection connection, JMXConnector connector)
{
super(connection);
this.connector = connector;
}
@Override
public boolean enqueue()
{
try
{
connector.close();
} catch (Exception ignored) {
log.warning("Could not close JMXConnector: " + connector);
} finally {
connector = null;
jmxConnectorRefs.remove(this);
}
return super.enqueue();
}
}
}