| // |
| // ======================================================================== |
| // 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.servlets; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.EnumSet; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import javax.servlet.DispatcherType; |
| 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.http.HttpTester; |
| import org.eclipse.jetty.server.LocalConnector; |
| import org.eclipse.jetty.servlet.FilterHolder; |
| import org.eclipse.jetty.servlet.ServletTester; |
| import org.eclipse.jetty.util.BufferUtil; |
| import org.eclipse.jetty.util.log.Log; |
| import org.eclipse.jetty.util.log.Logger; |
| import org.hamcrest.Matchers; |
| import org.junit.After; |
| import org.junit.Assert; |
| 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); |
| |
| if (TestServlet.__maxSleepers <= MAX_QOS) |
| LOG.warn("TEST WAS NOT PARALLEL ENOUGH!"); |
| else |
| Assert.assertThat(TestServlet.__maxSleepers, Matchers.lessThanOrEqualTo(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, "/*", EnumSet.of(DispatcherType.REQUEST, DispatcherType.ASYNC)); |
| |
| for (int i = 0; i < NUM_CONNECTIONS; ++i) |
| { |
| new Thread(new Worker(i)).start(); |
| } |
| |
| _doneRequests.await(10, TimeUnit.SECONDS); |
| if (TestServlet.__maxSleepers < MAX_QOS) |
| LOG.warn("TEST WAS NOT PARALLEL ENOUGH!"); |
| else |
| Assert.assertEquals(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, String.valueOf(MAX_QOS)); |
| _tester.getContext().getServletHandler().addFilterWithMapping(holder, "/*", EnumSet.of(DispatcherType.REQUEST, DispatcherType.ASYNC)); |
| |
| for (int i = 0; i < NUM_CONNECTIONS; ++i) |
| { |
| new Thread(new Worker2(i)).start(); |
| } |
| |
| _doneRequests.await(20, TimeUnit.SECONDS); |
| if (TestServlet.__maxSleepers < MAX_QOS) |
| LOG.warn("TEST WAS NOT PARALLEL ENOUGH!"); |
| else |
| Assert.assertEquals(TestServlet.__maxSleepers, MAX_QOS); |
| } |
| |
| class Worker implements Runnable |
| { |
| private int _num; |
| |
| public Worker(int num) |
| { |
| _num = num; |
| } |
| |
| @Override |
| public void run() |
| { |
| for (int i = 0; i < NUM_LOOPS; i++) |
| { |
| HttpTester.Request request = HttpTester.newRequest(); |
| |
| request.setMethod("GET"); |
| request.setHeader("host", "tester"); |
| request.setURI("/context/test?priority=" + (_num % QoSFilter.__DEFAULT_MAX_PRIORITY)); |
| request.setHeader("num", _num + ""); |
| try |
| { |
| String responseString = _connectors[_num].getResponses(BufferUtil.toString(request.generate())); |
| if (responseString.contains("HTTP")) |
| { |
| _doneRequests.countDown(); |
| } |
| } |
| catch (Exception x) |
| { |
| Assert.assertTrue(false); |
| } |
| } |
| } |
| } |
| |
| class Worker2 implements Runnable |
| { |
| private int _num; |
| |
| public Worker2(int num) |
| { |
| _num = num; |
| } |
| |
| @Override |
| public void run() |
| { |
| URL url = null; |
| try |
| { |
| String addr = _tester.createConnector(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); |
| url.getContent(); |
| _doneRequests.countDown(); |
| } |
| } |
| catch (Exception e) |
| { |
| LOG.debug("Request " + url + " failed", e); |
| } |
| } |
| } |
| |
| public static class TestServlet extends HttpServlet |
| { |
| private static int __sleepers; |
| private static int __maxSleepers; |
| |
| @Override |
| 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) |
| { |
| __sleepers--; |
| } |
| |
| response.setContentType("text/plain"); |
| response.getWriter().println("DONE!"); |
| } |
| catch (InterruptedException e) |
| { |
| response.sendError(500); |
| } |
| } |
| } |
| |
| public static class QoSFilter2 extends QoSFilter |
| { |
| @Override |
| public int getPriority(ServletRequest request) |
| { |
| String p = request.getParameter("priority"); |
| if (p != null) |
| return Integer.parseInt(p); |
| return 0; |
| } |
| } |
| } |