/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.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>
*
*/
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) && (oldValue.length() > 0)) {
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();
}
}