lib/logging.c

   1 /*
   2  * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include <stdlib.h>
  24 #include <babeltrace/logging.h>
  25 #include <babeltrace/lib-logging-internal.h>
  26
  27 BT_HIDDEN
  28 int bt_lib_log_level = BT_LOG_NONE;
  29
  30 enum bt_logging_level bt_logging_get_minimal_level(void)
  31 {
  32         return BT_LOG_LEVEL;
  33 }
  34
  35 enum bt_logging_level bt_logging_get_global_level(void)
  36 {
  37         return bt_lib_log_level;
  38 }
  39
  40 void bt_logging_set_global_level(enum bt_logging_level log_level)
  41 {
  42         bt_lib_log_level = log_level;
  43 }
  44
  45 static
  46 void __attribute__((constructor)) bt_logging_ctor(void)
  47 {
  48         enum bt_logging_level log_level = BT_LOG_NONE;
  49         const char *log_level_env = getenv("BABELTRACE_LOGGING_GLOBAL_LEVEL");
  50
  51         if (!log_level_env) {
  52                 goto set_level;
  53         }
  54
  55         if (strcmp(log_level_env, "VERBOSE") == 0) {
  56                 log_level = BT_LOGGING_LEVEL_VERBOSE;
  57         } else if (strcmp(log_level_env, "DEBUG") == 0) {
  58                 log_level = BT_LOGGING_LEVEL_DEBUG;
  59         } else if (strcmp(log_level_env, "INFO") == 0) {
  60                 log_level = BT_LOGGING_LEVEL_INFO;
  61         } else if (strcmp(log_level_env, "WARN") == 0) {
  62                 log_level = BT_LOGGING_LEVEL_WARN;
  63         } else if (strcmp(log_level_env, "ERROR") == 0) {
  64                 log_level = BT_LOGGING_LEVEL_ERROR;
  65         } else if (strcmp(log_level_env, "FATAL") == 0) {
  66                 log_level = BT_LOGGING_LEVEL_FATAL;
  67         }
  68
  69 set_level:
  70         bt_logging_set_global_level(log_level);
  71 }