package org.paneris.jammyjoes.upload;

 import java.io.IOException;

 import java.io.PrintWriter;

 import java.util.Date;

 import javax.servlet.Servlet;

 import javax.servlet.ServletConfig;

 import javax.servlet.ServletException;

 import javax.servlet.ServletRequest;

 import javax.servlet.ServletResponse;

 /**

  * This servlet launches a Warden thread. This will wait for 24 hours before 

  * uploading new files to ecentives

  */

 public class WardenLauncher implements Servlet {

   private ServletConfig config;

   Thread warden = null;

   /**

    * Servlet initialisation

    * <p>

    * Get parameters from the config file and launch a Warden thread

    *

    * @see Warden

   */

   public void init(ServletConfig config) throws ServletException {

     System.err.println(new Date() + " Starting the JammyJoes WardenLauncher");

     this.config = config;

     // Launch our warden

     if (warden==null) {

       Warden war = new Warden(this);

       warden = new Thread(war, "warden");

       warden.start();

     }

   }

   /**

    * Servlet cleanup

    * 

    * Clean up our Warden. Its run method checks that it's own

    * thread is the one pointed to by warden, so setting it

    * to null means it exits

    */

   public void destroy() {

 //    warden = null;

   }

   public ServletConfig getServletConfig() {

     return config;

   }

   public String getServletInfo() {

     return "A servlet to launch a warden thread. This warden uploads "+

            "data to ecentives every 24 hours.";

   }

   /**

    * Service the servlet's request. This should always report that

    * the thread is launched because the only way of stopping it

    * is through this servlet's destroy method

    */

   public void service(ServletRequest req, ServletResponse resp)

          throws ServletException, IOException {

     // Give info about the warden

     resp.setContentType("text/html");

     PrintWriter out = resp.getWriter();

     out.println("The warden thread "+

                 ((warden!=null)?" is launched":" is not launched")

                );

     out.close();

   }

 }