hphp/util/cronolog.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-2014 Facebook, Inc. (http://www.facebook.com)     |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #ifndef incl_HPHP_CRONOLOG_H_
  18 #define incl_HPHP_CRONOLOG_H_
  19
  20 #include <atomic>
  21 #include <string>
  22 #include <cstdio>
  23
  24 #include "hphp/util/cronoutils.h"
  25 #include "hphp/util/lock.h"
  26 #include "hphp/util/log-file-flusher.h"
  27
  28 namespace HPHP {
  29 ///////////////////////////////////////////////////////////////////////////////
  30
  31 class Cronolog {
  32 public:
  33   Cronolog() :
  34     m_periodicity(UNKNOWN),
  35     m_periodDelayUnits(UNKNOWN),
  36     m_periodMultiple(1),
  37     m_periodDelay(0),
  38     m_useAmericanDateFormats(0),
  39     m_startTime(nullptr),
  40     m_prevLinkName(nullptr),
  41     m_timeOffset(0),
  42     m_nextPeriod(0),
  43     m_prevFile(nullptr),
  44     m_file(nullptr) {}
  45   ~Cronolog() {
  46     if (m_prevFile) fclose(m_prevFile);
  47     if (m_file) fclose(m_file);
  48   }
  49   void setPeriodicity();
  50   FILE *getOutputFile();
  51   static void changeOwner(const std::string &username,
  52                           const std::string &symlink);
  53 public:
  54   PERIODICITY m_periodicity;
  55   PERIODICITY m_periodDelayUnits;
  56   int m_periodMultiple;
  57   int m_periodDelay;
  58   int m_useAmericanDateFormats;
  59   char m_fileName[PATH_MAX];
  60   char *m_startTime;
  61   std::string m_template;
  62   std::string m_linkName;
  63   char *m_prevLinkName;
  64   time_t m_timeOffset;
  65   time_t m_nextPeriod;
  66   FILE *m_prevFile;
  67   FILE *m_file;
  68   LogFileFlusher flusher;
  69   Mutex m_mutex;
  70
  71 private:
  72   Cronolog(const Cronolog &); // suppress
  73   Cronolog &operator=(const Cronolog &); // suppress
  74 };
  75
  76 ///////////////////////////////////////////////////////////////////////////////
  77 }
  78
  79 #endif // incl_HPHP_CRONOLOG_H_