/jetty/contrib/terracotta/src/test/java/org/mortbay/terracotta/servlet/LightLoadTest.java
Java | 235 lines | 187 code | 25 blank | 23 comment | 13 complexity | 36d3251b7ebda1f47a7f2097fe73ab2a MD5 | raw file
- // ========================================================================
- // Copyright 2004-2005 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.io.PrintWriter;
- import java.util.Random;
- import java.util.concurrent.CyclicBarrier;
- import java.util.concurrent.ExecutorService;
- import java.util.concurrent.Executors;
- 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: 1645 $ $Date: 2009-09-15 20:31:07 +1000 (Tue, 15 Sep 2009) $
- */
- public class LightLoadTest
- {
- private boolean _stress = Boolean.getBoolean( "STRESS" );
- @Test
- public void testLightLoad()
- throws Exception
- {
- if ( _stress )
- {
- Random random = new Random( System.nanoTime() );
- String contextPath = "";
- String servletMapping = "/server";
- int port1 = random.nextInt( 50000 ) + 10000;
- TerracottaJettyServer server1 = new TerracottaJettyServer( port1 );
- server1.addContext( contextPath ).addServlet( TestServlet.class, servletMapping );
- server1.start();
- try
- {
- int port2 = random.nextInt( 50000 ) + 10000;
- TerracottaJettyServer server2 = new TerracottaJettyServer( port2 );
- server2.addContext( contextPath ).addServlet( TestServlet.class, servletMapping );
- server2.start();
- try
- {
- HttpClient client = new HttpClient();
- client.setConnectorType( HttpClient.CONNECTOR_SOCKET );
- client.start();
- try
- {
- String[] urls = new String[2];
- urls[0] = "http://localhost:" + port1 + contextPath + servletMapping;
- urls[1] = "http://localhost:" + port2 + contextPath + servletMapping;
- ContentExchange exchange1 = new ContentExchange( true );
- exchange1.setMethod( HttpMethods.GET );
- exchange1.setURL( urls[0] + "?action=init" );
- client.send( exchange1 );
- exchange1.waitForDone();
- assert exchange1.getResponseStatus() == HttpServletResponse.SC_OK;
- String sessionCookie = exchange1.getResponseFields().getStringField( "Set-Cookie" );
- assert sessionCookie != null;
- // Mangle the cookie, replacing Path with $Path, etc.
- sessionCookie = sessionCookie.replaceFirst("(\\W)(P|p)ath=", "$1\\$Path=");
- ExecutorService executor = Executors.newCachedThreadPool();
- int clientsCount = 50;
- CyclicBarrier barrier = new CyclicBarrier( clientsCount + 1 );
- int requestsCount = 100;
- Worker[] workers = new Worker[clientsCount];
- for ( int i = 0; i < clientsCount; ++i )
- {
- workers[i] = new Worker( barrier, requestsCount, sessionCookie, urls );
- workers[i].start();
- executor.execute( workers[i] );
- }
- // Wait for all workers to be ready
- barrier.await();
- long start = System.nanoTime();
- // Wait for all workers to be done
- barrier.await();
- long end = System.nanoTime();
- long elapsed = TimeUnit.NANOSECONDS.toMillis( end - start );
- System.out.println( "elapsed ms: " + elapsed );
- for ( Worker worker : workers )
- worker.stop();
- executor.shutdownNow();
- // Perform one request to get the result
- ContentExchange exchange2 = new ContentExchange( true );
- exchange2.setMethod( HttpMethods.GET );
- exchange2.setURL( urls[0] + "?action=result" );
- exchange2.getRequestFields().add( "Cookie", sessionCookie );
- client.send( exchange2 );
- exchange2.waitForDone();
- assert exchange2.getResponseStatus() == HttpServletResponse.SC_OK;
- String response = exchange2.getResponseContent();
- System.out.println( "get = " + response );
- assert response.trim().equals( String.valueOf( clientsCount * requestsCount ) );
- }
- finally
- {
- client.stop();
- }
- }
- finally
- {
- server2.stop();
- }
- }
- finally
- {
- server1.stop();
- }
- }
- }
- public static class Worker
- implements Runnable
- {
- private final HttpClient client;
- private final CyclicBarrier barrier;
- private final int requestsCount;
- private final String sessionCookie;
- private final String[] urls;
- public Worker( CyclicBarrier barrier, int requestsCount, String sessionCookie, String[] urls )
- {
- this.client = new HttpClient();
- this.client.setConnectorType( HttpClient.CONNECTOR_SOCKET );
- this.barrier = barrier;
- this.requestsCount = requestsCount;
- this.sessionCookie = sessionCookie;
- this.urls = urls;
- }
- public void start()
- throws Exception
- {
- client.start();
- }
- public void stop()
- throws Exception
- {
- client.stop();
- }
- public void run()
- {
- try
- {
- // Wait for all workers to be ready
- barrier.await();
- Random random = new Random( System.nanoTime() );
- for ( int i = 0; i < requestsCount; ++i )
- {
- int urlIndex = random.nextInt( urls.length );
- ContentExchange exchange = new ContentExchange( true );
- exchange.setMethod( HttpMethods.GET );
- exchange.setURL( urls[urlIndex] + "?action=increment" );
- exchange.getRequestFields().add( "Cookie", sessionCookie );
- client.send( exchange );
- exchange.waitForDone();
- assert exchange.getResponseStatus() == HttpServletResponse.SC_OK;
- }
- // Wait for all workers to be done
- barrier.await();
- }
- catch ( Exception x )
- {
- throw new RuntimeException( x );
- }
- }
- }
- 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( "value", 0 );
- }
- else if ( "increment".equals( action ) )
- {
- // Without synchronization, because it is taken care by Jetty/Terracotta
- HttpSession session = request.getSession( false );
- int value = (Integer) session.getAttribute( "value" );
- session.setAttribute( "value", value + 1 );
- }
- else if ( "result".equals( action ) )
- {
- HttpSession session = request.getSession( false );
- int value = (Integer) session.getAttribute( "value" );
- PrintWriter writer = response.getWriter();
- writer.println( value );
- writer.flush();
- }
- }
- }
- }