/*
 *
 * (C) 2013-20 - 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 _DNS_STATS_H_
#define _DNS_STATS_H_

#include "ntop_includes.h"

struct queries_breakdown {
  u_int32_t num_a, num_ns, num_cname, num_soa,
    num_ptr, num_mx, num_txt, num_aaaa,
    num_any, num_other;
};

struct dns_stats {
  MonitoredCounter<u_int32_t> num_queries, num_replies_ok, num_replies_error;
  struct queries_breakdown breakdown;
};

class DnsStats {
 private:
  struct dns_stats sent_stats, rcvd_stats;

  void deserializeStats(json_object *o, struct dns_stats *stats);
  json_object* getStatsJSONObject(struct dns_stats *stats);
  void luaStats(lua_State *vm, struct dns_stats *stats, const char *label, bool verbose);

 public:
  DnsStats();

  void incStats(bool as_client, const FlowDNSStats *fts);
  void updateStats(const struct timeval * const tv);

  char* serialize();
  void deserialize(json_object *o);
  json_object* getJSONObject();
  void lua(lua_State *vm, bool verbose);
  bool hasAnomalies(time_t when);
  void luaAnomalies(lua_State* vm, time_t when);
};

#endif /* _STATS_H_ */