/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * Contributor(s):
 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

/*
 * LogEvent.java
 *
 */

package com.sun.enterprise.admin.selfmanagement.event;

import javax.management.NotificationFilter;
import javax.management.ObjectName;
import javax.management.MalformedObjectNameException;
import com.sun.enterprise.util.SystemPropertyConstants;
import com.sun.enterprise.util.i18n.StringManager;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;
import com.sun.enterprise.admin.common.MBeanServerFactory;
import javax.management.MBeanServer;


/**
 *
 * @author hemanth
 */
public class LogEvent implements Event {
    private static final StringManager sm = StringManager.getManager(LogEvent.class);
    private static final Logger _logger=LogDomains.getLogger(LogDomains.SELF_MANAGEMENT_LOGGER);
    
    /** Creates a new instance of LogEvent */
    public LogEvent(    
        final LogEventFilter filter,
        final String descriptionIn) {
        notificationFilter = filter;
        description = descriptionIn != null ? descriptionIn : defaultDescription;
    }
    
    public ObjectName getObjectName() {
        return getLogObjectName();
    }
    
    
    public String getType() {
        return "log";
    }
    
    public NotificationFilter getNotificationFilter( ){
        return notificationFilter;
    }
    
    public String getDescription() {
        return description;
    }
    
    public void destroy() {
        // do nothing
    }
    
    static ObjectName getLogObjectName() {
        if (objName != null)  // MUST be 'volatile' for this test to work.
            return objName; 
            
        synchronized( LogEvent.class ) {
            try {
                objName =  new ObjectName( "amx:j2eeType=X-Logging,name="+
                        System.getProperty(SystemPropertyConstants.SERVER_NAME )+
                        ",X-ServerRootMonitor=" +
                        System.getProperty(SystemPropertyConstants.SERVER_NAME ));
                final MBeanServer mbeanServer = MBeanServerFactory.getMBeanServer();
                if (mbeanServer.isRegistered(objName)) {
                    return objName;
                } else
                    _logger.log(Level.WARNING,"smgt.internal_error",
                            new Object[] {sm.getString("selfmgmt_event.log_mbean_is_not_available")});
            }catch (MalformedObjectNameException mex) {
                _logger.log(Level.WARNING,"smgt.internal_error", mex);
            }
        }
        return objName;
        
    }
    
    private static volatile ObjectName objName = null;
    private static final String defaultDescription = sm.getString("selfmgmt_event.log_event_description");
    
    private final String description;
    private final LogEventFilter notificationFilter;
}