/**
 * Helios, OpenSource Monitoring
 * Brought to you by the Helios Development Group
 *
 * Copyright 2007, Helios Development Group and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * 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.helios.collector.jmx.identifiers;

import org.helios.apmrouter.jmx.JMXHelper;

import javax.management.*;
import java.io.IOException;
import java.lang.management.ManagementFactory;

/**
 * <p>Title: DefaultMBeanServerIdentifier</p>
 * <p>Description: Default IMBeanServerIdentifier that determines the host and vm from the MXRuntime MBean</p> 
 * <p>Company: Helios Development Group LLC</p>
 * @author Whitehead (nwhitehead AT heliosdev DOT org)
 * @version $LastChangedRevision$
 * <p><code>org.helios.collectors.jmx.identifiers.DefaultMBeanServerIdentifier</code></p>
 */

public class DefaultMBeanServerIdentifier extends AbstractMBeanServerIdentifier {

	private static final long serialVersionUID = -1211192228646937211L;

	/**
	 * Returns a string array containing the host and vm identifiers
	 * @param connection The MBeanServerConnection to get the identifiers from
	 * @return A String array with the host id in [0], the VM id in [1] and the JMX Default Domain in [2]
	 * @throws IOException 
	 * @throws ReflectionException 
	 * @throws MBeanException 
	 * @throws InstanceNotFoundException 
	 * @throws AttributeNotFoundException 
	 */
	@Override
	public String[] getHostVMId(MBeanServerConnection connection) throws AttributeNotFoundException, InstanceNotFoundException, MBeanException, ReflectionException, IOException {
		String[] ids = new String[3]; 
		ids[2] = connection.getDefaultDomain();
		String[] hostvm =  connection.getAttribute(JMXHelper.objectName(ManagementFactory.RUNTIME_MXBEAN_NAME), "Name").toString().split("@");
		ids[0] = hostvm[1];
		ids[1] = "Helios".equals(ids[2]) ? "HeliosVM" : hostvm[0];
		return ids;				
	}

}