/*
 *
 * (C) 2013-17 - 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"

#ifdef NTOPNG_PRO
class AggregatedFlow;
#endif

class DB {
 protected:
  NetworkInterface *iface;
  Mutex *m;

 public:
  DB(NetworkInterface *_iface);
  virtual ~DB();
  
  virtual bool dumpFlow(time_t when, Flow *f, char *json);
  virtual int exec_sql_query(lua_State *vm, char *sql,
			     bool limit_rows, bool wait_for_db_created = true);
  virtual void startDBLoop();
  virtual void flush() {};
  virtual bool createDBSchema(bool set_db_created = true) {
	  return false; /* override in non-schemaless subclasses */ };
  virtual bool createNprobeDBView() { return false; };
  virtual void updateStats(const struct timeval *tv) {};
  virtual void checkPointCounters(bool drops_only) {};
  virtual void lua(lua_State* vm, bool since_last_checkpoint) const {};
#ifdef NTOPNG_PRO
  virtual bool dumpAggregatedFlow(AggregatedFlow *f);
#endif
};

#endif /* _DB_CLASS_H_ */