ctdb/common/logging_conf.c

   1 /*
   2    CTDB logging config handling
   3
   4    Copyright (C) Martin Schwenke  2017
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "replace.h"
  21
  22 #include <talloc.h>
  23
  24 #include "common/conf.h"
  25 #include "common/logging.h"
  26 #include "common/logging_conf.h"
  27
  28 #define LOGGING_LOCATION_DEFAULT        "file:" LOGDIR "/log.ctdb"
  29 #define LOGGING_LOG_LEVEL_DEFAULT       "ERROR"
  30
  31 static bool logging_conf_validate_log_level(const char *key,
  32                                             const char *old_loglevel,
  33                                             const char *new_loglevel,
  34                                             enum conf_update_mode mode)
  35 {
  36         int log_level;
  37         bool ok;
  38
  39         ok = debug_level_parse(new_loglevel, &log_level);
  40         if (!ok) {
  41                 return false;
  42         }
  43
  44         return true;
  45 }
  46
  47 static bool logging_conf_validate_location(const char *key,
  48                                            const char *old_location,
  49                                            const char *new_location,
  50                                            enum conf_update_mode mode)
  51 {
  52         bool ok;
  53
  54         ok = logging_validate(new_location);
  55         if (!ok) {
  56                 return false;
  57         }
  58
  59         if (mode == CONF_MODE_RELOAD &&
  60             strcmp(old_location, new_location) != 0) {
  61                 D_WARNING("Ignoring update of %s config option \"%s\"\n",
  62                           LOGGING_CONF_SECTION, key);
  63                 return false;
  64         }
  65
  66         return true;
  67 }
  68
  69 void logging_conf_init(struct conf_context *conf,
  70                        const char *default_log_level)
  71 {
  72         const char *log_level;
  73
  74         log_level = (default_log_level == NULL) ?
  75                         LOGGING_LOG_LEVEL_DEFAULT :
  76                         default_log_level;
  77
  78         conf_define_section(conf, LOGGING_CONF_SECTION, NULL);
  79
  80         conf_define_string(conf,
  81                            LOGGING_CONF_SECTION,
  82                            LOGGING_CONF_LOCATION,
  83                            LOGGING_LOCATION_DEFAULT,
  84                            logging_conf_validate_location);
  85
  86         conf_define_string(conf,
  87                            LOGGING_CONF_SECTION,
  88                            LOGGING_CONF_LOG_LEVEL,
  89                            log_level,
  90                            logging_conf_validate_log_level);
  91 }
  92
  93 const char *logging_conf_location(struct conf_context *conf)
  94 {
  95         const char *out = NULL;
  96         int ret;
  97
  98         ret = conf_get_string(conf,
  99                               LOGGING_CONF_SECTION,
 100                               LOGGING_CONF_LOCATION,
 101                               &out,
 102                               NULL);
 103         if (ret != 0) {
 104                 /* Can't really happen, but return default */
 105                 return LOGGING_LOCATION_DEFAULT;
 106         }
 107
 108         return out;
 109 }
 110
 111 const char *logging_conf_log_level(struct conf_context *conf)
 112 {
 113         const char *out = NULL;
 114         int ret;
 115
 116         ret = conf_get_string(conf,
 117                               LOGGING_CONF_SECTION,
 118                               LOGGING_CONF_LOG_LEVEL,
 119                               &out,
 120                               NULL);
 121         if (ret != 0) {
 122                 /* Can't really happen, but return default */
 123                 return LOGGING_LOG_LEVEL_DEFAULT;
 124         }
 125
 126         return out;
 127 }