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* Copyright 2004 The Apache Software Foundation
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package org.apache.naming;
import java.util.logging.Logger;
import java.util.logging.Level;
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;
import org.glassfish.logging.annotation.LogMessageInfo;
/**
* Implementation of the NamingService JMX MBean.
*
* @author <a href="mailto:remm@apache.org">Remy Maucherat</a>
* @version $Revision: 1.3 $
*/
public final class NamingService
extends NotificationBroadcasterSupport
implements NamingServiceMBean, MBeanRegistration {
private static final Logger log = org.apache.naming.resources.FileDirContext.logger;
@LogMessageInfo(
message = "Unable to restore original system properties",
level = "WARNING")
private static final String UNABLE_TO_RESTORE_ORIGINAL_SYS_PROPERTIES = "AS-WEB-NAMING-00024";
// ----------------------------------------------------- Instance Variables
/**
* Status of the Slide domain.
*/
private State state = 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 State getState() {
return state;
}
/**
* Start the servlet container.
*/
public void start()
throws Exception {
Notification notification = null;
if (state != State.STOPPED)
return;
state = State.STARTING;
// Notifying the MBEan server that we're starting
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Starting " + NAME, "State", "org.apache.naming.NamingServiceMBean$State",
State.STOPPED, State.STARTING);
sendNotification(notification);
try {
String value = "org.apache.naming";
String oldValue = System.getProperty(Context.URL_PKG_PREFIXES);
if (oldValue != null) {
oldUrlValue = oldValue;
value = oldValue + ":" + value;
}
System.setProperty(Context.URL_PKG_PREFIXES, value);
oldValue = System.getProperty(Context.INITIAL_CONTEXT_FACTORY);
if (oldValue != null) {
oldIcValue = oldValue;
} else {
System.setProperty(Context.INITIAL_CONTEXT_FACTORY,
Constants.Package
+ ".java.javaURLContextFactory");
}
} catch (Throwable t) {
state = State.STOPPED;
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Stopped " + NAME, "State", "org.apache.naming.NamingServiceMBean$State",
State.STARTING, State.STOPPED);
sendNotification(notification);
}
state = State.STARTED;
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Started " + NAME, "State", "org.apache.naming.NamingServiceMBean$State",
State.STARTING, State.STARTED);
sendNotification(notification);
}
/**
* Stop the servlet container.
*/
public void stop() {
Notification notification = null;
if (state != State.STARTED)
return;
state = State.STOPPING;
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Stopping " + NAME, "State", "org.apache.naming.NamingServiceMBean$State",
State.STARTED, State.STOPPING);
sendNotification(notification);
try {
System.setProperty(Context.URL_PKG_PREFIXES, oldUrlValue);
System.setProperty(Context.INITIAL_CONTEXT_FACTORY, oldIcValue);
} catch (Throwable t) {
log.log(Level.WARNING, UNABLE_TO_RESTORE_ORIGINAL_SYS_PROPERTIES, t);
}
state = State.STOPPED;
notification = new AttributeChangeNotification
(this, sequenceNumber++, System.currentTimeMillis(),
"Stopped " + NAME, "State", "org.apache.naming.NamingServiceMBean$State",
State.STOPPING, State.STOPPED);
sendNotification(notification);
}
/**
* Destroy servlet container (if any is running).
*/
public void destroy() {
if (getState() != State.STOPPED)
stop();
}
}