logweb.cc
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * logweb.cc
- * Copyright (C) 2001 by the University of Southern California
- * $Id: logweb.cc,v 1.6 2006/02/21 15:20:20 mahrenho 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)
- //
- #include <tclcl.h>
- #include "logweb.h"
- // Timer to send requests
- RequestTimer::RequestTimer(LogWebTrafPool* pool) {
- lwp = pool;
- }
- void RequestTimer::expire(Event *e) {
- //if (e)
- // Packet::free((Packet *)e);
- lwp->run();
- }
- static class LogWebTrafPoolClass : public TclClass {
- public:
- LogWebTrafPoolClass() : TclClass("PagePool/WebTraf/Log") {}
- TclObject* create(int, const char*const*) {
- return (new LogWebTrafPool());
- }
- } class_logwebtrafpool;
- LogWebTrafPool::LogWebTrafPool() {
- num_obj = 0;
- // initialize next request
- next_req.time = 0;
- next_req.client = 0;
- next_req.server = 0;
- next_req.size = 0;
- // initialize request timer
- req_timer = new RequestTimer(this);
- start_t = 0;
- }
- LogWebTrafPool::~LogWebTrafPool() {
- if (fp)
- fclose(fp);
- if (req_timer) delete req_timer;
- }
- int LogWebTrafPool::loadLog(const char* filename) {
- fp = fopen(filename, "r");
- if (fp == 0)
- return(0);
-
- return(1);
- }
- int LogWebTrafPool::start() {
- start_t = Scheduler::instance().clock();
- processLog();
- return(1);
- }
- int LogWebTrafPool::processLog() {
- int time, client, server, size;
- if (!feof(fp)) {
- fscanf(fp, "%d %d %d %dn", &time, &client, &server, &size);
- // save information for next request
- next_req.time = time;
- next_req.client = client;
- next_req.server = server;
- next_req.size = size;
- double now = Scheduler::instance().clock();
- double delay = time + start_t - now;
- req_timer->resched(delay);
- return(1);
- } else
- return(0);
- }
- int LogWebTrafPool::run() {
- launchReq(next_req.client, next_req.server, next_req.size);
- processLog();
- return(1);
- }
- Node* LogWebTrafPool::picksrc(int id) {
- int n = id % nClient_;
- assert((n >= 0) && (n < nClient_));
- return client_[n];
- }
- Node* LogWebTrafPool::pickdst(int id) {
- int n = id % nServer_;
- assert((n >= 0) && (n < nServer_));
- return server_[n].get_node();
- }
- int LogWebTrafPool::launchReq(int cid, int sid, int size) {
- TcpAgent *tcp;
- Agent *snk;
-
- // Allocation new TCP connections for both directions
- pick_ep(&tcp, &snk);
- // pick client and server nodes
- Node* client = picksrc(cid);
- Node* server = pickdst(sid);
- int num_pkt = size / 1000 + 1;
- // Setup TCP connection and done
- Tcl::instance().evalf("%s launch-req %d %d %s %s %s %s %d %d",
- name(), num_obj++, num_obj,
- client->name(), server->name(),
- tcp->name(), snk->name(), num_pkt, NULL);
- return(1);
- }
- int LogWebTrafPool::command(int argc, const char*const* argv) {
- if (argc == 2) {
- if (strcmp(argv[1], "start") == 0) {
- if (start())
- return (TCL_OK);
- else
- return (TCL_ERROR);
-
- }
-
- } else if (argc == 3) {
- if (strcmp(argv[1], "loadLog") == 0) {
- if (loadLog(argv[2]))
- return (TCL_OK);
- else
- return (TCL_ERROR);
- } else if (strcmp(argv[1], "doneObj") == 0) {
- return (TCL_OK);
- }
- }
- return WebTrafPool::command(argc, argv);
- }