// ========================================================================
   // Copyright 2004-2008 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.server.session;
  
  import java.io.IOException;
  import java.util.Collections;
  import java.util.Random;
  
  import javax.servlet.RequestDispatcher;
  import javax.servlet.ServletContext;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.http.HttpSession;
  
  import org.eclipse.jetty.client.ContentExchange;
  import org.eclipse.jetty.client.HttpClient;
  import org.eclipse.jetty.http.HttpMethods;
  import org.eclipse.jetty.servlet.ServletContextHandler;
  import org.junit.Test;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  /**
   * AbstractServerCrossContextSessionTest
   */
  public abstract class AbstractServerCrossContextSessionTest
  {
  
      public abstract AbstractTestServer createServer(int port);
      
      @Test
      public void testCrossContextDispatch() throws Exception
      {
          Random random = new Random(System.nanoTime());
  
          String contextA = "/contextA";
          String contextB = "/contextB";
          String servletMapping = "/server";
          int port = random.nextInt(50000) + 10000;
          AbstractTestServer server = createServer(port);
          ServletContextHandler ctxA = server.addContext(contextA);
          ctxA.addServlet(TestServletA.class, servletMapping);
          ServletContextHandler ctxB = server.addContext(contextB);
          ctxB.addServlet(TestServletB.class, servletMapping);
          server.start();
          try
          {
              HttpClient client = new HttpClient();
              client.setConnectorType(HttpClient.CONNECTOR_SOCKET);
              client.start();
              try
              {
                  // Perform a request, on server side a cross context dispatch will be done
                  ContentExchange exchange = new ContentExchange(true);
                  exchange.setMethod(HttpMethods.GET);
                  exchange.setURL("http://localhost:" + port + contextA + servletMapping);
                  client.send(exchange);
                  exchange.waitForDone();
                  assertEquals(HttpServletResponse.SC_OK,exchange.getResponseStatus());
              }
              finally
              {
                  client.stop();
              }
          }
          finally
          {
              server.stop();
          }
      }
  
      public static class TestServletA extends HttpServlet
      {
          @Override
          protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
          {
              HttpSession session = request.getSession(false);
              if (session == null) session = request.getSession(true);
  
              // Add something to the session
              session.setAttribute("A", "A");
              System.out.println("A: session.getAttributeNames() = " + Collections.list(session.getAttributeNames()));
  
              // Perform cross context dispatch to another context
              // Over there we will check that the session attribute added above is not visible
              ServletContext contextB = getServletContext().getContext("/contextB");
             RequestDispatcher dispatcherB = contextB.getRequestDispatcher(request.getServletPath());
             dispatcherB.forward(request, response);
 
             // Check that we don't see things put in session by contextB
             Object objectB = session.getAttribute("B");
             assertTrue(objectB == null);
             System.out.println("A: session.getAttributeNames() = " + Collections.list(session.getAttributeNames()));
         }
     }
 
     public static class TestServletB extends HttpServlet
     {
         @Override
         protected void doGet(HttpServletRequest request, HttpServletResponse httpServletResponse) throws ServletException, IOException
         {
             HttpSession session = request.getSession(false);
             if (session == null) session = request.getSession(true);
 
             // Be sure nothing from contextA is present
             Object objectA = session.getAttribute("A");
             assertTrue(objectA == null);
 
             // Add something, so in contextA we can check if it is visible (it must not).
             session.setAttribute("B", "B");
             System.out.println("B: session.getAttributeNames() = " + Collections.list(session.getAttributeNames()));
         }
     }
 }