// ========================================================================
// Copyright (c) 2004-2009 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.servlets;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.net.URL;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.LocalConnector;
import org.eclipse.jetty.servlet.FilterHolder;
import org.eclipse.jetty.servlet.FilterMapping;
import org.eclipse.jetty.testing.HttpTester;
import org.eclipse.jetty.testing.ServletTester;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class QoSFilterTest
{
private static final Logger LOG = Log.getLogger(QoSFilterTest.class);
private ServletTester _tester;
private LocalConnector[] _connectors;
private CountDownLatch _doneRequests;
private final int NUM_CONNECTIONS = 8;
private final int NUM_LOOPS = 6;
private final int MAX_QOS = 4;
@Before
public void setUp() throws Exception
{
_tester = new ServletTester();
_tester.setContextPath("/context");
_tester.addServlet(TestServlet.class, "/test");
TestServlet.__maxSleepers=0;
TestServlet.__sleepers=0;
_connectors = new LocalConnector[NUM_CONNECTIONS];
for(int i = 0; i < _connectors.length; ++i)
_connectors[i] = _tester.createLocalConnector();
_doneRequests = new CountDownLatch(NUM_CONNECTIONS*NUM_LOOPS);
_tester.start();
}
@After
public void tearDown() throws Exception
{
_tester.stop();
}
@Test
public void testNoFilter() throws Exception
{
for(int i = 0; i < NUM_CONNECTIONS; ++i )
{
new Thread(new Worker(i)).start();
}
_doneRequests.await(10,TimeUnit.SECONDS);
assertFalse("TEST WAS NOT PARALLEL ENOUGH!",TestServlet.__maxSleepers<=MAX_QOS);
assertTrue(TestServlet.__maxSleepers<=NUM_CONNECTIONS);
}
@Test
public void testBlockingQosFilter() throws Exception
{
FilterHolder holder = new FilterHolder(QoSFilter2.class);
holder.setAsyncSupported(true);
holder.setInitParameter(QoSFilter.MAX_REQUESTS_INIT_PARAM, ""+MAX_QOS);
_tester.getContext().getServletHandler().addFilterWithMapping(holder,"/*",FilterMapping.DEFAULT);
for(int i = 0; i < NUM_CONNECTIONS; ++i )
{
new Thread(new Worker(i)).start();
}
_doneRequests.await(10,TimeUnit.SECONDS);
assertFalse("TEST WAS NOT PARALLEL ENOUGH!",TestServlet.__maxSleepers<MAX_QOS);
assertTrue(TestServlet.__maxSleepers==MAX_QOS);
}
@Test
public void testQosFilter() throws Exception
{
FilterHolder holder = new FilterHolder(QoSFilter2.class);
holder.setAsyncSupported(true);
holder.setInitParameter(QoSFilter.MAX_REQUESTS_INIT_PARAM, ""+MAX_QOS);
_tester.getContext().getServletHandler().addFilterWithMapping(holder,"/*",FilterMapping.DEFAULT);
for(int i = 0; i < NUM_CONNECTIONS; ++i )
{
new Thread(new Worker2(i)).start();
}
_doneRequests.await(20,TimeUnit.SECONDS);
assertFalse("TEST WAS NOT PARALLEL ENOUGH!",TestServlet.__maxSleepers<MAX_QOS);
assertTrue(TestServlet.__maxSleepers<=MAX_QOS);
}
class Worker implements Runnable {
private int _num;
public Worker(int num)
{
_num = num;
}
public void run()
{
for (int i=0;i<NUM_LOOPS;i++)
{
HttpTester request = new HttpTester();
request.setMethod("GET");
request.setHeader("host", "tester");
request.setURI("/context/test?priority="+(_num%QoSFilter.__DEFAULT_MAX_PRIORITY));
request.setHeader("num", _num+"");
try
{
String responseString = _tester.getResponses(request.generate(), _connectors[_num]);
if(responseString.indexOf("HTTP")!=-1)
{
_doneRequests.countDown();
}
}
catch (Exception x)
{
assertTrue(false);
}
}
}
}
class Worker2 implements Runnable {
private int _num;
public Worker2(int num)
{
_num = num;
}
public void run()
{
URL url=null;
try
{
String addr = _tester.createSocketConnector(true);
for (int i=0;i<NUM_LOOPS;i++)
{
url=new URL(addr+"/context/test?priority="+(_num%QoSFilter.__DEFAULT_MAX_PRIORITY)+"&n="+_num+"&l="+i);
// System.err.println(_num+"-"+i+" Try "+url);
url.getContent();
_doneRequests.countDown();
// System.err.println(_num+"-"+i+" Got "+IO.toString(in)+" "+_doneRequests.getCount());
}
}
catch(Exception e)
{
LOG.warn(String.valueOf(url));
LOG.debug(e);
}
}
}
public static class TestServlet extends HttpServlet implements Servlet
{
private static int __sleepers;
private static int __maxSleepers;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
try
{
synchronized(TestServlet.class)
{
__sleepers++;
if(__sleepers > __maxSleepers)
__maxSleepers = __sleepers;
}
Thread.sleep(50);
synchronized(TestServlet.class)
{
// System.err.println(_count++);
__sleepers--;
if(__sleepers > __maxSleepers)
__maxSleepers = __sleepers;
}
response.setContentType("text/plain");
response.getWriter().println("DONE!");
}
catch (InterruptedException e)
{
e.printStackTrace();
response.sendError(500);
}
}
}
public static class QoSFilter2 extends QoSFilter
{
public int getPriority(ServletRequest request)
{
String p = request.getParameter("priority");
if (p!=null)
return Integer.parseInt(p);
return 0;
}
}
}