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[JBoss-dev] CVS update: contrib/catalina/src/main/org/jboss/test/tomcat/servlet HelloEJB.java PrintClassLoaders.java Util.java
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From: Scott M S. <st...@us...> - 2002-02-11 23:02:19
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User: starksm
Date: 02/02/11 15:02:16
Added: catalina/src/main/org/jboss/test/tomcat/servlet
HelloEJB.java PrintClassLoaders.java Util.java
Log:
A sample test ear
Revision Changes Path
1.1 contrib/catalina/src/main/org/jboss/test/tomcat/servlet/HelloEJB.java
Index: HelloEJB.java
===================================================================
package org.jboss.test.tomcat.servlet;
import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.jboss.test.tomcat.ejb.interfaces.StatelessSessionHome;
import org.jboss.test.tomcat.ejb.interfaces.StatelessSession;
/** A servlet that accesses the
@author Sco...@jb...
@version $Revision: 1.1 $
*/
public class HelloEJB extends HttpServlet
{
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>HelloEJB</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet calling EJB</h1>");
try
{
boolean speedTest = "speed".equals(request.getQueryString());
boolean trace = "trace".equals(request.getQueryString());
testBean("NonOptimized", speedTest, trace, out);
testBean("Optimized", speedTest, trace, out);
if( trace == true )
{
out.println("<pre><h2>Servlet Trace Info:</h2>\n");
out.println(PrintClassLoaders.getClassLoaders());
out.println("<h2>JNDI ENC:</h2>\n");
Util.dumpENC(out);
out.println("</pre>");
}
out.println("</body>");
out.println("</html>");
}
catch (Exception e)
{
out.println("Context not found: exception message:<pre>");
e.printStackTrace(out);
out.println("</pre>");
out.println("</body>");
out.println("</html>");
}
}
static void testBean(String jndiName, boolean speedTest, boolean trace, PrintWriter out)
throws NamingException
{
Context ctx = new InitialContext();
try
{
StatelessSessionHome home = (StatelessSessionHome)ctx.lookup(jndiName);
StatelessSession bean = home.create();
jndiName = "java:comp/env/ejb/" + jndiName;
out.print("<h2>Accessing EJB: " + jndiName + ", method=<tt>getMessage()</tt></h2>");
if( trace == false )
out.print(bean.getMessage());
else
{
out.println("<pre>\n");
out.print(bean.getMessageAndTrace());
out.println("</pre>\n");
}
int iter = 1000;
if (speedTest)
{
out.println("<h3>Speed Test ("+ iter + " iterations)</h3>");
long start = System.currentTimeMillis();
long start2 = start;
for (int i = 0 ; i < iter; i++)
{
bean.getMessage();
if (i % 100 == 0 && i != 0)
{
long end = System.currentTimeMillis();
out.println("Time/call(ms):"+((end-start2)/100.0));
start2 = end;
}
}
long end = System.currentTimeMillis();
out.println("<br>Avg. time/call(ms):"+((end-start)/(float)iter)+"</p>");
}
}
catch (Exception e)
{
out.println("<br>Call failed... Exception:");
out.println("<pre>");
e.printStackTrace(out);
out.println("</pre>");
}
}
}
1.1 contrib/catalina/src/main/org/jboss/test/tomcat/servlet/PrintClassLoaders.java
Index: PrintClassLoaders.java
===================================================================
package org.jboss.test.tomcat.servlet;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URL;
import java.net.URLClassLoader;
import javax.servlet.*;
import javax.servlet.http.*;
/**
*
* @author Sco...@di...
* @version $Revision: 1.1 $
*/
public class PrintClassLoaders extends HttpServlet
{
/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException
{
response.setContentType("text/html");
java.io.PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet</title>");
out.println("</head>");
out.println("<body><pre>");
out.println(getClassLoaders());
out.println("</body></pre>");
out.println("</html>");
out.close();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException
{
processRequest(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException
{
processRequest(request, response);
}
/** Returns a short description of the servlet.
*/
public String getServletInfo()
{
return "A servlet prints the request ClassLoaders";
}
public static String getClassLoaders()
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
StringBuffer buffer = new StringBuffer();
do
{
buffer.append("+++ ");
buffer.append(loader);
buffer.append('\n');
if( loader instanceof URLClassLoader )
{
URLClassLoader uloader = (URLClassLoader) loader;
URL[] paths = uloader.getURLs();
for(int p = 0; p < paths.length; p ++)
{
buffer.append(" - ");
buffer.append(paths[p]);
buffer.append('\n');
}
}
loader = loader.getParent();
} while( loader != null );
// Write the call stack
buffer.append("+++ Call stack:\n");
Throwable t = new RuntimeException();
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
t.printStackTrace(pw);
buffer.append(sw.toString());
return buffer.toString();
}
}
1.1 contrib/catalina/src/main/org/jboss/test/tomcat/servlet/Util.java
Index: Util.java
===================================================================
package org.jboss.test.tomcat.servlet;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Date;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.LinkRef;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.NameClassPair;
import javax.naming.NameParser;
/** A utility class for generating ENC and class loader dumps.
@author Sco...@jb...
@version $Revision: 1.1 $
*/
public class Util
{
public static void showTree(String indent, Context ctx, PrintWriter out)
throws NamingException
{
ClassLoader loader = Thread.currentThread().getContextClassLoader();
NamingEnumeration enum = ctx.list("");
while( enum.hasMoreElements() )
{
NameClassPair ncp = (NameClassPair)enum.next();
String name = ncp.getName();
out.print(indent + " +- " + name);
boolean recursive = false;
boolean isLinkRef = false;
try
{
Class c = loader.loadClass(ncp.getClassName());
if( Context.class.isAssignableFrom(c) )
recursive = true;
if( LinkRef.class.isAssignableFrom(c) )
isLinkRef = true;
}
catch(ClassNotFoundException cnfe)
{
}
if( isLinkRef )
{
try
{
LinkRef link = (LinkRef) ctx.lookupLink(name);
out.print("[link -> ");
out.print(link.getLinkName());
out.print(']');
}
catch(Throwable e)
{
e.printStackTrace();
out.print("[invalid]");
}
}
out.println();
if( recursive )
{
try
{
Object value = ctx.lookup(name);
if( value instanceof Context )
{
Context subctx = (Context) value;
showTree(indent + " | ", subctx, out);
}
else
{
out.println(indent + " | NonContext: "+value);
}
}
catch(Throwable t)
{
out.println("Failed to lookup: "+name+", errmsg="+t.getMessage());
}
}
}
}
public static void dumpClassLoader(ClassLoader cl, PrintWriter out)
{
int level = 0;
while( cl != null )
{
String msg = "Servlet ClassLoader["+level+"]: "+cl.getClass().getName()+':'+cl.hashCode();
out.println(msg);
if( cl instanceof URLClassLoader )
{
URLClassLoader ucl = (URLClassLoader) cl;
URL[] urls = ucl.getURLs();
msg = " URLs:";
out.println(msg);
for(int u = 0; u < urls.length; u ++)
{
msg = " ["+u+"] = "+urls[u];
out.println(msg);
}
}
cl = cl.getParent();
level ++;
}
}
public static void dumpENC(PrintWriter out) throws NamingException
{
InitialContext iniCtx = new InitialContext();
Context enc = (Context) iniCtx.lookup("java:comp/env");
showTree("", enc, out);
}
public static String displayClassLoaders(ClassLoader cl) throws NamingException
{
StringWriter sw = new StringWriter();
PrintWriter out = new PrintWriter(sw);
dumpClassLoader(cl, out);
return sw.toString();
}
public static String displayENC() throws NamingException
{
StringWriter sw = new StringWriter();
PrintWriter out = new PrintWriter(sw);
dumpENC(out);
return sw.toString();
}
}
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