/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.test.web.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
import org.jboss.test.web.interfaces.ReferenceTest;
import org.jboss.test.web.interfaces.StatelessSession;
import org.jboss.test.web.interfaces.StatelessSessionHome;
import org.jboss.test.web.interfaces.StatelessSessionLocal;
import org.jboss.test.web.interfaces.StatelessSessionLocalHome;
import org.jboss.test.web.util.Util;
/** A servlet that accesses an EJB and tests the speed of optimized versus non-optimized invocations.
@author Adrian.Brock@HappeningTimes.com
@version $Revision: 81036 $
*/
public class SpeedServlet extends HttpServlet
{
public static final int REPEATS = 10;
public static final int ITERATIONS = 100;
protected long[] runRemoteTest(StatelessSession bean, boolean optimized)
throws Exception
{
ReferenceTest test = new ReferenceTest();
long[] results = new long[REPEATS];
for (int loop = 0; loop < REPEATS; loop ++)
{
long start = System.currentTimeMillis();
for (int i = 0; i < ITERATIONS; i++)
bean.noop(test, optimized);
results[loop] = System.currentTimeMillis() - start;
}
return results;
}
protected void displayResults(PrintWriter out, long[] results)
throws IOException
{
long total = 0;
out.print("<table><tr>");
for (int i = 0; i < results.length; i++)
{
total += results[i];
out.print("<td>" + results[i] + " ms</td>");
}
out.println("</tr></table><br />");
out.println("Total time = " + total + " ms<br />");
out.println("Invocations = " + ITERATIONS * REPEATS);
float average = total * 1000;
average /= (ITERATIONS * REPEATS);
out.println("Average time= " + average + " micro-seconds<br />");
}
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
long[] optimized = null;
long[] notOptimized = null;
try
{
InitialContext ctx = new InitialContext();
Context enc = (Context) ctx.lookup("java:comp/env");
StatelessSessionHome home = (StatelessSessionHome) enc.lookup("ejb/OptimizedEJB");
StatelessSession bean = home.create();
optimized = runRemoteTest(bean, true);
home = (StatelessSessionHome) enc.lookup("ejb/NotOptimizedEJB");
bean = home.create();
notOptimized = runRemoteTest(bean, false);
}
catch(Exception e)
{
throw new ServletException("Failed to run speed tests", e);
}
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head><title>SpeedServlet</title></head>");
out.println("<body>");
out.println("Number of invocations=" + ITERATIONS + " repeated " + REPEATS + " times.<br />");
out.println("<h2>ejb/OptimizedEJB</h2>");
displayResults(out, optimized);
out.println("<h2>ejb/NotOptimizedEJB</h2>");
displayResults(out, notOptimized);
out.println("</body>");
out.println("</html>");
out.close();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
processRequest(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
processRequest(request, response);
}
}