/*
* $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/naming/NamingService.java,v 1.2 2001/11/22 16:48:32 remm Exp $
* $Revision: 1.2 $
* $Date: 2001/11/22 16:48:32 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* [Additional notices, if required by prior licensing conditions]
*
*/
package org.apache.naming;
import javax.naming.Context;
import javax.management.NotificationBroadcasterSupport;
import javax.management.ObjectName;
import javax.management.MBeanServer;
import javax.management.MBeanRegistration;
import javax.management.AttributeChangeNotification;
import javax.management.Notification;
/**
* Implementation of the NamingService JMX MBean.
*
* @author <a href="mailto:remm@apache.org">Remy Maucherat</a>
* @version $Revision: 1.2 $
*/
public final class NamingService
extends NotificationBroadcasterSupport
implements NamingServiceMBean, MBeanRegistration {
// ----------------------------------------------------- Instance Variables
/**
* Status of the Slide domain.
*/
private int state = STOPPED;
/**
* Notification sequence number.
*/
private long sequenceNumber = 0;
/**
* Old URL packages value.
*/
private String oldUrlValue = "";
/**
* Old initial context value.
*/
private String oldIcValue = "";
// ---------------------------------------------- MBeanRegistration Methods
public ObjectName preRegister(MBeanServer server, ObjectName name)
throws Exception {
return new ObjectName(OBJECT_NAME);
}
public void postRegister(Boolean registrationDone) {
if (!registrationDone.booleanValue())
destroy();
}
public void preDeregister()
throws Exception {
}
public void postDeregister() {
destroy();
}
// ----------------------------------------------------- SlideMBean Methods
/**
* Retruns the Catalina component name.
*/
public String getName() {
return NAME;
}
/**
* Returns the state.
*/
public int getState() {
return state;
}
/**
* Returns a String representation of the state.
*/
public String getStateString() {
return states[state];
}
/**
* Start the servlet container.
*/
public void start()
throws Exception {
Notification notification = null;
if (state != STOPPED)
return;
state = STARTING;
// Notifying the MBEan server that we're starting
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Starting " + NAME, "State", "java.lang.Integer",
new Integer(STOPPED), new Integer(STARTING));
sendNotification(notification);
try {
String value = "org.apache.naming";
String oldValue = System.getProperty(Context.URL_PKG_PREFIXES);
if (oldValue != null) {
oldUrlValue = oldValue;
value = oldValue + ":" + value;
}
System.setProperty(Context.URL_PKG_PREFIXES, value);
oldValue = System.getProperty(Context.INITIAL_CONTEXT_FACTORY);
if (oldValue != null) {
oldIcValue = oldValue;
} else {
System.setProperty(Context.INITIAL_CONTEXT_FACTORY,
Constants.Package
+ ".java.javaURLContextFactory");
}
} catch (Throwable t) {
state = STOPPED;
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Stopped " + NAME, "State", "java.lang.Integer",
new Integer(STARTING), new Integer(STOPPED));
sendNotification(notification);
}
state = STARTED;
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Started " + NAME, "State", "java.lang.Integer",
new Integer(STARTING), new Integer(STARTED));
sendNotification(notification);
}
/**
* Stop the servlet container.
*/
public void stop() {
Notification notification = null;
if (state != STARTED)
return;
state = STOPPING;
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Stopping " + NAME, "State", "java.lang.Integer",
new Integer(STARTED), new Integer(STOPPING));
sendNotification(notification);
try {
System.setProperty(Context.URL_PKG_PREFIXES, oldUrlValue);
System.setProperty(Context.INITIAL_CONTEXT_FACTORY, oldIcValue);
} catch (Throwable t) {
// FIXME
t.printStackTrace();
}
state = STOPPED;
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Stopped " + NAME, "State", "java.lang.Integer",
new Integer(STOPPING), new Integer(STOPPED));
sendNotification(notification);
}
/**
* Destroy servlet container (if any is running).
*/
public void destroy() {
if (getState() != STOPPED)
stop();
}
}