/* * Copyright (c) 2005, John Mettraux, OpenWFE.org * All rights reserved. *  * Redistribution and use in source and binary forms, with or without  * modification, are permitted provided that the following conditions are met: *  * . Redistributions of source code must retain the above copyright notice, this *   list of conditions and the following disclaimer.   *  * . Redistributions in binary form must reproduce the above copyright notice,  *   this list of conditions and the following disclaimer in the documentation  *   and/or other materials provided with the distribution. *  * . Neither the name of the "OpenWFE" nor the names of its contributors may be *   used to endorse or promote products derived from this software without *   specific prior written permission. *  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE  * POSSIBILITY OF SUCH DAMAGE. * * $Id: JavaAgentBuilder.java,v 1.3 2005/05/17 16:40:18 jmettraux Exp $ *///// JavaAgentBuilder.java//// jmettraux@openwfe.org//// generated with // jtmpl 1.0.04 31.10.2002 John Mettraux (jmettraux@openwfe.org)//package openwfe.org.apre.impl;import java.net.URL;import java.net.URLClassLoader;import openwfe.org.ApplicationContext;import openwfe.org.apre.Agent;import openwfe.org.apre.AgentBuilder;import openwfe.org.apre.ApreException;/** * Easy task : instatiating a java class... * * <p><font size=2>CVS Info : * <br>$Author: jmettraux $ * <br>$Date: 2005/05/17 16:40:18 $ * <br>$Id: JavaAgentBuilder.java,v 1.3 2005/05/17 16:40:18 jmettraux Exp $ </font> * * @author jmettraux@openwfe.org */public class JavaAgentBuilder    implements AgentBuilder{    private final static org.apache.log4j.Logger log = org.apache.log4j.Logger        .getLogger(JavaAgentBuilder.class.getName());    //    // FIELDS    //    // CONSTRUCTORS    //    // METHODS from AgentBuilder    public Agent build         (final String agentName,         final String agentClass,          final ApplicationContext context,          final java.util.Map agentParams)    throws         ApreException    {        try        {            Class clazz = null;            final String path = (String)agentParams.get(Agent.P_AGENT_PATH);            if (path != null)                //                // localize agent in its own PATH            {                String fullPath = null;                try                {                    fullPath =                         context.getApplicationDirectory() +                         java.io.File.separator +                         path;                    final URL url = (new java.io.File(fullPath)).toURL();                    final ClassLoader loader =                         new URLClassLoader(new URL[] { url });                    clazz = loader.loadClass(agentClass);                }                catch (Throwable t)                {                    log.warn                        ("Failed to set up classloader for path "+fullPath, t);                }            }            if (clazz == null)                //                // else localize agent in CLASSPATH            {                clazz = Class.forName(agentClass);            }            final Agent agent = (Agent)clazz.newInstance();            agent.init(agentName, context, agentParams);            return agent;        }        catch (Exception e)        {            throw new ApreException                ("Failed to build java agent", e);        }    }    //    // METHODS}