stats.h

/**
 * \file stats.h
 * \brief Plugin periodically printing statistics about flow cache
 * \author Vaclav Bartos <bartos@cesnet.cz>
 * \author Jiri Havranek <havraji6@fit.cvut.cz>
 * \date 2014
 * \date 2015
 * \date 2016
 */
/*
 * Copyright (C) 2014-2016 CESNET
 *
 * LICENSE TERMS
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. Neither the name of the Company nor the names of its contributors
 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * ALTERNATIVELY, provided that this notice is retained in full, this
 * product may be distributed under the terms of the GNU General Public
 * License (GPL) version 2 or later, in which case the provisions
 * of the GPL apply INSTEAD OF those given above.
 *
 * This software is provided ``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 company 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.
 *
 */
#ifndef STATS_H
#define STATS_H

#include <ostream>

#include "flowcacheplugin.h"

using namespace std;

class StatsPlugin : public FlowCachePlugin
{
   uint64_t packets;
   uint64_t new_flows;
   uint64_t cache_hits;
   uint64_t flows_in_cache;

   struct timeval interval;
   struct timeval last_ts;
   ostream &out;
   bool init_ts;

   void check_timestamp(const Packet &pkt);
   void print_header() const;
   void print_stats(const struct timeval &ts) const;

public:
   StatsPlugin(struct timeval interval, ostream &out);
   FlowCachePlugin *copy();

   void init();
   int post_create(Flow &rec, const Packet &pkt);
   int post_update(Flow &rec, const Packet &pkt);
   void pre_export(Flow &rec);
   void finish();
};

#endif