Add logging API (internal to log, public to set the current log level)
[babeltrace.git] / lib / logging.c
CommitLineData
beb0fb75
PP
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
27BT_HIDDEN
28int bt_lib_log_level = BT_LOG_NONE;
29
30enum bt_logging_level bt_logging_get_minimal_level(void)
31{
32 return BT_LOG_LEVEL;
33}
34
35enum bt_logging_level bt_logging_get_global_level(void)
36{
37 return bt_lib_log_level;
38}
39
40void bt_logging_set_global_level(enum bt_logging_level log_level)
41{
42 bt_lib_log_level = log_level;
43}
44
45static
46void __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
69set_level:
70 bt_logging_set_global_level(log_level);
71}
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