/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Sam
*/
package com.caucho.server.webapp;
import com.caucho.network.listen.TcpSocketLink;
import com.caucho.network.listen.SocketLink;
import com.caucho.server.dispatch.*;
import com.caucho.server.http.AbstractHttpRequest;
import com.caucho.util.Alarm;
import com.caucho.vfs.ClientDisconnectException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import java.io.IOException;
public class StatisticsFilterChain implements FilterChain
{
private final FilterChain _next;
private WebApp _webApp;
public StatisticsFilterChain(FilterChain next, WebApp webApp)
{
_next = next;
_webApp = webApp;
}
public void doFilter(ServletRequest request, ServletResponse response)
throws ServletException, IOException
{
if (request instanceof AbstractHttpRequest) {
AbstractHttpRequest httpRequest = (AbstractHttpRequest) request;
SocketLink connection = httpRequest.getConnection();
if (connection instanceof TcpSocketLink) {
TcpSocketLink tcpConnection = (TcpSocketLink) connection;
long time = Alarm.getExactTime();
long readBytes = -1;
long writeBytes = -1;
readBytes = tcpConnection.getSocket().getTotalReadBytes();
writeBytes = tcpConnection.getSocket().getTotalWriteBytes();
ClientDisconnectException clientDisconnectException = null;
try {
_next.doFilter(request, response);
} catch (ClientDisconnectException ex) {
clientDisconnectException = ex;
}
time = Alarm.getExactTime() - time;
readBytes = tcpConnection.getSocket().getTotalReadBytes() - readBytes;
writeBytes = tcpConnection.getSocket().getTotalReadBytes() - writeBytes;
_webApp.updateStatistics(time, (int) readBytes, (int) writeBytes, clientDisconnectException != null);
if (clientDisconnectException != null)
throw clientDisconnectException;
return;
}
}
_next.doFilter(request, response);
}
}