//
   //  ========================================================================
   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package org.eclipse.jetty.test.jmx;
  
  import java.io.IOException;
  import java.util.Date;
  
  import javax.servlet.ServletConfig;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.eclipse.jetty.util.annotation.ManagedObject;
  import org.eclipse.jetty.util.annotation.ManagedOperation;
  import org.eclipse.jetty.util.log.Log;
  import org.eclipse.jetty.util.log.Logger;
  
  /**
   * Simple ping into this webapp to see if it is here.
   */
  @SuppressWarnings("serial")
  @ManagedObject("Ping Servlet")
  public class PingServlet extends HttpServlet
  {
      private static final Logger LOG = Log.getLogger(PingServlet.class);
      
      @Override
      public void init(ServletConfig config) throws ServletException
      {
          LOG.info("Adding {} to attribute {}", this, config.getServletName());
          config.getServletContext().setAttribute(config.getServletName(),this);
          super.init(config);
      }
  
      @Override
      protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
      {
          resp.setContentType("text/plain");
          resp.getWriter().println(ping());
      }
  
      @ManagedOperation
      public String ping()
      {
          return "Servlet Pong at " + new Date().toString();
      }
  }