// ========================================================================
// Copyright 2004-2008 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================
package org.mortbay.terracotta.servlet;
import java.io.IOException;
import java.util.Random;
import java.util.concurrent.TimeUnit;
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.mortbay.jetty.HttpMethods;
import org.mortbay.jetty.client.ContentExchange;
import org.mortbay.jetty.client.HttpClient;
import org.testng.annotations.Test;
/**
* @version $Revision: 1319 $ $Date: 2008-11-13 17:55:54 -0600 (Thu, 13 Nov 2008) $
*/
public class OrphanedSessionTest
{
/**
* If nodeA creates a session, and just afterwards crashes, it is the only node that knows about the session.
* Its session data will remain forever in the Terracotta server, but it will never be expired because
* other nodes are not aware of that session if they never get hit by its session id.
* We want to test that the session data is gone after scavenging.
*/
@Test
public void testOrphanedSession() throws Exception
{
Random random = new Random(System.nanoTime());
// Disable scavenging for the first server, so that we simulate its "crash".
String contextPath = "";
String servletMapping = "/server";
int port1 = random.nextInt(50000) + 10000;
int inactivePeriod = 5;
TerracottaJettyServer server1 = new TerracottaJettyServer(port1, inactivePeriod, -1);
server1.addContext(contextPath).addServlet(TestServlet.class, servletMapping);
server1.start();
try
{
int port2 = random.nextInt(50000) + 10000;
int scavengePeriod = 2;
TerracottaJettyServer server2 = new TerracottaJettyServer(port2, inactivePeriod, scavengePeriod);
server2.addContext(contextPath).addServlet(TestServlet.class, servletMapping);
server2.start();
try
{
HttpClient client = new HttpClient();
client.setConnectorType(HttpClient.CONNECTOR_SOCKET);
client.start();
try
{
// Connect to server1 to create a session and get its session cookie
ContentExchange exchange1 = new ContentExchange(true);
exchange1.setMethod(HttpMethods.GET);
exchange1.setURL("http://localhost:" + port1 + contextPath + servletMapping + "?action=init");
client.send(exchange1);
exchange1.waitForDone();
assert exchange1.getResponseStatus() == HttpServletResponse.SC_OK;
String sessionCookie = exchange1.getResponseFields().getStringField("Set-Cookie");
assert sessionCookie != null;
// Wait for the session to expire.
// The first node does not do any scavenging, but the session
// must be removed by scavenging done in the other node.
Thread.sleep(TimeUnit.SECONDS.toMillis(inactivePeriod + 2L * scavengePeriod));
// Perform one request to server2 to be sure that the session has been expired
ContentExchange exchange2 = new ContentExchange(true);
exchange2.setMethod(HttpMethods.GET);
exchange2.setURL("http://localhost:" + port2 + contextPath + servletMapping + "?action=check");
exchange2.getRequestFields().add("Cookie", sessionCookie);
client.send(exchange2);
exchange2.waitForDone();
assert exchange2.getResponseStatus() == HttpServletResponse.SC_OK;
}
finally
{
client.stop();
}
}
finally
{
server2.stop();
}
}
finally
{
server1.stop();
}
}
public static class TestServlet extends HttpServlet
{
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
String action = request.getParameter("action");
if ("init".equals(action))
{
HttpSession session = request.getSession(true);
session.setAttribute("A", "A");
}
else if ("check".equals(action))
{
HttpSession session = request.getSession(false);
assert session == null;
}
}
}
}