/* -*-	Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */

/*
 * logweb.h
 * Copyright (C) 2001 by the University of Southern California
 * $Id: logweb.h,v 1.3 2005/08/25 18:58:13 johnh Exp $
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 *
 *
 * The copyright of this module includes the following
 * linking-with-specific-other-licenses addition:
 *
 * In addition, as a special exception, the copyright holders of
 * this module give you permission to combine (via static or
 * dynamic linking) this module with free software programs or
 * libraries that are released under the GNU LGPL and with code
 * included in the standard release of ns-2 under the Apache 2.0
 * license or under otherwise-compatible licenses with advertising
 * requirements (or modified versions of such code, with unchanged
 * license).  You may copy and distribute such a system following the
 * terms of the GNU GPL for this module and the licenses of the
 * other code concerned, provided that you include the source code of
 * that other code when and as the GNU GPL requires distribution of
 * source code.
 *
 * Note that people who make modified versions of this module
 * are not obligated to grant this special exception for their
 * modified versions; it is their choice whether to do so.  The GNU
 * General Public License gives permission to release a modified
 * version without this exception; this exception also makes it
 * possible to release a modified version which carries forward this
 * exception.
 *
 */

//
// Generate web traffic based on HTTP log
// Xuan Chen (xuanc@isi.edu)
//
#ifndef ns_logweb_h
#define ns_logweb_h

#include "webtraf.h"

// Data structure for next request
struct request_s {
	int time;
	int client;
	int server;
	int size;
};

class LogWebTrafPool;

// Data structure for the timer to send requests
class RequestTimer : public TimerHandler{
public:
	RequestTimer(LogWebTrafPool*);
	
	virtual void expire(Event *e);

private:
	LogWebTrafPool *lwp;
};

class LogWebTrafPool : public WebTrafPool {
public: 
	LogWebTrafPool(); 
	virtual ~LogWebTrafPool(); 

	int run();
protected:
	virtual int command(int argc, const char*const* argv);

private:
	// handler to the http log file
	FILE* fp;
	int num_obj;

	double start_t;
	RequestTimer *req_timer;
	request_s next_req;

	int loadLog(const char*);
	int start();
	int launchReq(int, int, int);
	int processLog();

	Node* picksrc(int);
	Node* pickdst(int);
};


#endif // ns_logweb_h