connection_control_data.h

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#ifndef CONNECTION_CONTROL_DATA_H
#define CONNECTION_CONTROL_DATA_H
 
#include <atomic>
 
#include <my_inttypes.h>
 
/**
  Enum for system variables : Must be in sync with
  members of Connection_control_variables.
*/
typedef enum opt_connection_control {
  OPT_FAILED_CONNECTIONS_THRESHOLD = 0,
  OPT_MIN_CONNECTION_DELAY,
  OPT_MAX_CONNECTION_DELAY,
  OPT_EXEMPT_UNKNOWN_USERS,
  OPT_LAST /* Must be last */
} opt_connection_control;
 
/**
  Enum for status variables : Must be in sync with
  members of Connection_control_statistics.
*/
typedef enum stats_connection_control {
  STAT_CONNECTION_DELAY_TRIGGERED = 0,
  STAT_OPTION_USAGE = 1,
  STAT_CONNECTION_EXEMPTED_USERS = 2,
  STAT_LAST /* Must be last */
} stats_connection_control;
 
namespace connection_control {
/** Structure to maintain system variables */
class Connection_control_variables {
 public:
  /* Various global variables */
  long long failed_connections_threshold{0};
  long long min_connection_delay{0};
  long long max_connection_delay{0};
  bool exempt_unknown_users{false};
};
 
/** Structure to maintain statistics */
class Connection_control_statistics {
 public:
  Connection_control_statistics() = default;
  /* Various statistics to be collected */
  std::atomic<int64> stats_array[STAT_LAST];
};
}  // namespace connection_control
 
extern connection_control::Connection_control_statistics g_statistics;
extern connection_control::Connection_control_variables g_variables;
#endif  // !CONNECTION_CONTROL_DATA_H