/*

 * Copyright 2002-2008 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package com.sun.jmx.event;

import java.io.IOException;

import java.lang.reflect.InvocationHandler;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

import java.lang.reflect.Proxy;

import javax.management.MBeanServerConnection;

import javax.management.event.EventClient;

import javax.management.event.EventClientDelegate;

import javax.management.event.EventConsumer;

import javax.management.event.NotificationManager;

/**

 * Override the methods related to the notification to use the

 * Event service.

 */

public interface EventConnection extends MBeanServerConnection, EventConsumer {

    public EventClient getEventClient();

    public static class Factory {

        public static EventConnection make(

                final MBeanServerConnection mbsc,

                final EventClient eventClient)

                throws IOException {

            if (!mbsc.isRegistered(EventClientDelegate.OBJECT_NAME)) {

                throw new IOException(

                        "The server does not support the event service.");

            }

            InvocationHandler ih = new InvocationHandler() {

                public Object invoke(Object proxy, Method method, Object[] args)

                        throws Throwable {

                    Class<?> intf = method.getDeclaringClass();

                    try {

                        if (intf.isInstance(eventClient))

                            return method.invoke(eventClient, args);

                        else

                            return method.invoke(mbsc, args);

                    } catch (InvocationTargetException e) {

                        throw e.getCause();

                    }

                }

            };

            // It is important to declare NotificationManager.class first

            // in the array below, so that the relevant addNL and removeNL

            // methods will show up with method.getDeclaringClass() as

            // being from that interface and not MBeanServerConnection.

            return (EventConnection) Proxy.newProxyInstance(

                    NotificationManager.class.getClassLoader(),

                    new Class<?>[] {

                        NotificationManager.class, EventConnection.class,

                    },

                    ih);

        }

    }

}