livestatus/src/TimeperiodsCache.h

   1 // +------------------------------------------------------------------+
   2 // |             ____ _               _        __  __ _  __           |
   3 // |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
   4 // |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
   5 // |           | |___| | | |  __/ (__|   <    | |  | | . \            |
   6 // |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
   7 // |                                                                  |
   8 // | Copyright Mathias Kettner 2014             mk@mathias-kettner.de |
   9 // +------------------------------------------------------------------+
  10 //
  11 // This file is part of Check_MK.
  12 // The official homepage is at http://mathias-kettner.de/check_mk.
  13 //
  14 // check_mk is free software;  you can redistribute it and/or modify it
  15 // under the  terms of the  GNU General Public License  as published by
  16 // the Free Software Foundation in version 2.  check_mk is  distributed
  17 // in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
  18 // out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
  19 // PARTICULAR PURPOSE. See the  GNU General Public License for more de-
  20 // tails. You should have  received  a copy of the  GNU  General Public
  21 // License along with GNU Make; see the file  COPYING.  If  not,  write
  22 // to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
  23 // Boston, MA 02110-1301 USA.
  24
  25 #ifndef TimeperiodsCache_h
  26 #define TimeperiodsCache_h
  27
  28 #include "config.h"  // IWYU pragma: keep
  29 #include <chrono>
  30 #include <map>
  31 #include <mutex>
  32 #include <string>
  33 #include "nagios.h"
  34 class Logger;
  35
  36 class TimeperiodsCache {
  37 public:
  38     explicit TimeperiodsCache(Logger *logger);
  39     void update(std::chrono::system_clock::time_point now);
  40     bool inTimeperiod(const timeperiod *tp) const;
  41     bool inTimeperiod(const std::string &tpname) const;
  42     void logCurrentTimeperiods();
  43
  44 private:
  45     Logger *const _logger;
  46
  47     // The mutex protects _last_update and _cache.
  48     mutable std::mutex _mutex;
  49     std::chrono::system_clock::time_point _last_update;
  50     std::map<const timeperiod *, bool> _cache;
  51
  52     void logTransition(char *name, int from, int to) const;
  53 };
  54
  55 #endif  // TimeperiodsCache_h