/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2002 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.web.monitor.catalina;

import org.netbeans.modules.web.monitor.server.MonitorExtraActions;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.FilterChain; 
import javax.servlet.Servlet; 
import javax.servlet.ServletException; 

/**
 * MonitorUtil.java
 *
 *
 * Created: Tue Jan  8 12:29:46 2002
 *
 * @author Ana von Klopp
 * @version
 */

public class MonitorUtil implements MonitorExtraActions  {
    
    private final static boolean debug = false;
    
    public static final String ATTR = "org.netbeans.monitor.servlet"; //NOI18N

    public MonitorUtil() {
	
    }
    
    
    /** 
     * This method returns a handle on the servlet that processes the
     * request. 
     */
    public Servlet getServlet(HttpServletRequest request, 
			      FilterChain chain) {
	try {
	    return (Servlet)request.getAttribute(ATTR);
	}
	catch(Throwable t) {
	    return null;
	}
    }
    

    /**
     * This method evaluates the cookies that come in through the
     * headers for a JSESSIONID cookie. If such a cookie is present,
     * the method replaces the current session with the session
     * corresponding to the ID from the cookie, if the session is
     * still present. If the session no longer exists, or if the
     * request did not include a session cookie, any existing session
     * will no longer associated with the request. 
     *
     * For the Tomcat server, this is actually implemented as part of
     * the MonitorValve. 
     */
    public void replaceSessionID(HttpServletRequest request) {
	return;
    }
    
    public boolean canReplaceSessionID() {
	return true;
    }
} // MonitorUtil