/*
* $Header: /home/cvs/jakarta-slide/src/webdav/server/org/apache/slide/webdav/filter/XmlLogFilter.java,v 1.1.2.1 2004/02/05 16:11:22 mholz Exp $
* $Revision: 1.1.2.1 $
* $Date: 2004/02/05 16:11:22 $
*
* ====================================================================
*
* Copyright 1999-2002 The Apache Software Foundation
*
* 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.apache.slide.webdav.filter;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.slide.webdav.logger.XHttpServletRequestFacade;
import org.apache.slide.webdav.logger.XHttpServletResponseFacade;
import org.apache.slide.webdav.logger.XMLTestCaseGenerator;
/**
* A servlet filter for detailed XML logging.
*
* @author <a href="mailto:pnever@apache.org">Peter Nevermann</a>
* @version $Revision: 1.1.2.1 $
*/
public class XmlLogFilter implements Filter {
FilterConfig config;
boolean outputToFile = false;
String outputFilePath = null;
File outputFile = null;
BufferedOutputStream fout = null;
/**
* Interface implementation
*
* @param config a FilterConfig
*
* @throws ServletException
*
*/
public void init(FilterConfig config) throws ServletException {
this.config = config;
// get the init parms
String p;
p = config.getInitParameter( "outputToFile" );
if( p != null && !"".equals(p) ) {
outputFilePath = p;
outputFile = new File( outputFilePath );
try {
if( outputFile.canWrite() || outputFile.createNewFile() ) {
fout = new BufferedOutputStream( new FileOutputStream(outputFilePath, true) );
outputToFile = true;
}
}
catch (IOException e) {}
}
}
/**
* Interface implementation
*
* @param req a ServletRequest
* @param resp a ServletResponse
* @param chain a FilterChain
*
* @throws IOException
* @throws ServletException
*
*/
public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
XHttpServletRequestFacade reqFac = new XHttpServletRequestFacade((HttpServletRequest)req);
XHttpServletResponseFacade respFac = new XHttpServletResponseFacade((HttpServletResponse)resp);
chain.doFilter( reqFac, respFac );
logXML( reqFac, respFac );
}
/**
* Log one line.
*
* @param req a XHttpServletRequestFacade
* @param resp a XHttpServletResponseFacade
*
* @throws IOException
*
*/
private void logXML( XHttpServletRequestFacade req, XHttpServletResponseFacade resp ) throws IOException {
String thread = Thread.currentThread().getName();
XMLTestCaseGenerator xmlGen = new XMLTestCaseGenerator( req, resp );
xmlGen.setThreadName( thread );
if( outputToFile ) {
fout.write( xmlGen.toString().getBytes("UTF-8") );
fout.flush();
}
}
/**
* Interface implementation.
*
*/
public void destroy() {
try {
if( outputToFile )
fout.close();
}
catch (IOException e) {}
}
}