release/src/router/mysql/server-tools/instance-manager/instance_options.h

   1 #ifndef INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_OPTIONS_H
   2 #define INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_OPTIONS_H
   3 /* Copyright (c) 2004-2006 MySQL AB
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; version 2 of the License.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA */
  17
  18 #include <my_global.h>
  19 #include <my_sys.h>
  20
  21 #include "parse.h"
  22 #include "portability.h" /* for pid_t on Win32 */
  23
  24 #if defined(__GNUC__) && defined(USE_PRAGMA_INTERFACE)
  25 #pragma interface
  26 #endif
  27
  28
  29 /*
  30   This class contains options of an instance and methods to operate them.
  31
  32   We do not provide this class with the means of synchronization as it is
  33   supposed that options for instances are all loaded at once during the
  34   instance_map initilization and we do not change them later. This way we
  35   don't have to synchronize between threads.
  36 */
  37
  38 class Instance_options
  39 {
  40 public:
  41   /* The operation is used to check if the option is IM-specific or not. */
  42    static bool is_option_im_specific(const char *option_name);
  43
  44 public:
  45   Instance_options();
  46   ~Instance_options();
  47
  48   bool complete_initialization();
  49
  50   bool set_option(Named_value *option);
  51   void unset_option(const char *option_name);
  52
  53   inline int get_num_options() const;
  54   inline Named_value get_option(int idx) const;
  55
  56 public:
  57   bool init(const LEX_STRING *instance_name_arg);
  58   pid_t load_pid();
  59   int get_pid_filename(char *result);
  60   int unlink_pidfile();
  61   void print_argv();
  62
  63   uint get_shutdown_delay() const;
  64   int get_mysqld_port() const;
  65
  66 public:
  67   /*
  68     We need this value to be greater or equal then FN_REFLEN found in
  69     my_global.h to use my_load_path()
  70   */
  71   enum { MAX_PATH_LEN= 512 };
  72   enum { MAX_NUMBER_OF_DEFAULT_OPTIONS= 2 };
  73   char pid_file_with_path[MAX_PATH_LEN];
  74   char **argv;
  75   /*
  76     Here we cache the version string, obtained from mysqld --version.
  77     In the case when mysqld binary is not found we get NULL here.
  78   */
  79   const char *mysqld_version;
  80   /* We need the some options, so we store them as a separate pointers */
  81   const char *mysqld_socket;
  82   const char *mysqld_datadir;
  83   const char *mysqld_pid_file;
  84   LEX_STRING instance_name;
  85   LEX_STRING mysqld_path;
  86   LEX_STRING mysqld_real_path;
  87   const char *nonguarded;
  88   /* log enums are defined in parse.h */
  89   char *logs[3];
  90
  91 private:
  92   bool fill_log_options();
  93   bool fill_instance_version();
  94   bool fill_mysqld_real_path();
  95   int add_to_argv(const char *option);
  96   int get_default_option(char *result, size_t result_len,
  97                          const char *option_name);
  98
  99   void update_var(const char *option_name, const char *option_value);
 100   int find_option(const char *option_name);
 101
 102 private:
 103   const char *mysqld_port;
 104   uint mysqld_port_val;
 105   const char *shutdown_delay;
 106   uint shutdown_delay_val;
 107
 108   uint filled_default_options;
 109   MEM_ROOT alloc;
 110
 111   Named_value_arr options;
 112 };
 113
 114
 115 inline int Instance_options::get_num_options() const
 116 {
 117   return options.get_size();
 118 }
 119
 120
 121 inline Named_value Instance_options::get_option(int idx) const
 122 {
 123   return options.get_element(idx);
 124 }
 125
 126 #endif /* INCLUDES_MYSQL_INSTANCE_MANAGER_INSTANCE_OPTIONS_H */