/*
 *
 * Copyright (c) 2006 The Apache Software Foundation
 *
 * 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.apache.qpid.server.management;

import org.apache.log4j.Logger;

import javax.management.JMException;
import javax.management.MBeanServer;
import javax.management.NotCompliantMBeanException;
import javax.management.StandardMBean;
import java.lang.management.ManagementFactory;

public class JMXManagedObjectRegistry implements ManagedObjectRegistry
{
    private static final Logger _log = Logger.getLogger(JMXManagedObjectRegistry.class);

    private final MBeanServer _mbeanServer;

    public JMXManagedObjectRegistry()
    {
        _log.info("Initialising managed object registry using platform MBean server");
        // we use the platform MBean server currently but this must be changed or at least be configuurable
        _mbeanServer = ManagementFactory.getPlatformMBeanServer();
    }

    public void registerObject(ManagedObject managedObject) throws JMException
    {
        try
        {
             _mbeanServer.registerMBean(managedObject, managedObject.getObjectName());
        }
        catch(NotCompliantMBeanException ex)
        {
        // The following is a hack due to a silly change to StandardMBean in JDK 1.6
        // They have added in generics to get compile time safety which reduces the
        // flexibility
            Object o = managedObject;
            Class<Object> clazz = (Class<Object>) managedObject.getManagementInterface();
            StandardMBean mbean = new StandardMBean(o, clazz);

            _mbeanServer.registerMBean(mbean, managedObject.getObjectName());
        }

    }

    public void unregisterObject(ManagedObject managedObject) throws JMException
    {
        _mbeanServer.unregisterMBean(managedObject.getObjectName());
    }

}