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/*
*
* (C) 2013-22 - ntop.org
*
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* 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.
*
*/
#ifndef _DB_CLASS_H_
#define _DB_CLASS_H_
#include "ntop_includes.h"
class DB {
private:
struct timeval lastUpdateTime;
float exportRate;
u_int64_t exportedFlows, lastExportedFlows;
/* Multiple threads can inc in case of view interfaces */
std::atomic<u_int32_t> droppedFlows;
std::atomic<u_int32_t> queueDroppedFlows;
u_int64_t checkpointExportedFlows;
u_int32_t checkpointDroppedFlows, checkpointQueueDroppedFlows;
protected:
bool running;
NetworkInterface *iface;
public:
DB(NetworkInterface *_iface);
virtual ~DB() {};
inline void incNumExportedFlows(u_int64_t num = 1) { exportedFlows += num; };
inline void incNumDroppedFlows(u_int32_t num = 1) { droppedFlows += num; };
inline void incNumQueueDroppedFlows(u_int32_t num = 1) { queueDroppedFlows += num; };
inline u_int64_t getNumExportedFlows() const { return(exportedFlows); }
inline u_int32_t getNumDroppedFlows() const { return(queueDroppedFlows + droppedFlows); };
void updateStats(const struct timeval *tv);
void checkPointCounters(bool drops_only);
/* Pure Virtual Functions of a DB flow exporter */
virtual bool dumpFlow(time_t when, Flow *f, char *json) = 0;
virtual void startLoop() = 0;
inline void startDBLoop() { running = true; startLoop(); };
inline int isRunning() { return(running); };
virtual bool isDbCreated() { return(true); };
virtual void shutdown();
virtual void flush() {};
virtual void lua(lua_State* vm, bool since_last_checkpoint) const;
};
#endif /* _DB_CLASS_H_ */
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