// $Id: ProfilerInterceptor.java,v 1.6 2006/07/12 14:46:17 poth Exp $
/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
This library 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 library 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 library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53115 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.framework.util;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.HashMap;
import java.util.Iterator;
/**
* Interceptor to profile the application.
*
* @author <a href="mailto:tfr@users.sourceforge.net">Torsten Friebe </A>
*
* @author last edited by: $Author: poth $
*
* @version 2.0, $Revision: 1.6 $, $Date: 2006/07/12 14:46:17 $
*
* @see <a href="http://www.dofactory.com/patterns/PatternChain.aspx">Chain of
* Responsibility Design Pattern </a>
*
* @since 2.0
*/
public class ProfilerInterceptor extends Interceptor {
static {
Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
public void run() {
printStats();
}
}));
}
protected static HashMap data = new HashMap();
public ProfilerInterceptor(Interceptor nextInterceptor) {
this.nextInterceptor = nextInterceptor;
}
protected static void printStats() {
NumberFormat zweiDezimalen = new DecimalFormat("### ###.##");
Iterator iter = data.keySet().iterator();
while (iter.hasNext()) {
String m = (String) iter.next();
ProfileEntry entry = (ProfileEntry) data.get(m);
LOG.logInfo(entry.invocations + " calls " + entry.time
+ " ms " + " avg "
+ zweiDezimalen.format(entry.getAverage()) + m);
}
}
protected static ProfileEntry getEntry(String m) {
if (data.containsKey(m)) { return (ProfileEntry) data.get(m); }
ProfileEntry entry = new ProfileEntry();
data.put(m, entry);
return entry;
}
protected Object handleInvocation(Method method, Object[] params)
throws IllegalAccessException, InvocationTargetException {
long start = System.currentTimeMillis();
Object result = nextInterceptor.handleInvocation(method, params);
long duration = System.currentTimeMillis() - start;
ProfileEntry entry = getEntry(getTarget().getClass().getName() + "."
+ method.getName());
entry.time += duration;
entry.invocations++;
return result;
}
static class ProfileEntry {
long time;
long invocations;
public double getAverage() {
return (double) time / (double) invocations;
}
}
}/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: ProfilerInterceptor.java,v $
Revision 1.6 2006/07/12 14:46:17 poth
comment footer added
********************************************************************** */