| 1 | /* |
| 2 | * Copyright 2019 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 | #define BT_LOG_TAG "CLI" |
| 24 | #include "logging.h" |
| 25 | |
| 26 | #include "babeltrace2-log-level.h" |
| 27 | |
| 28 | #include <stdlib.h> |
| 29 | |
| 30 | #include "common/assert.h" |
| 31 | |
| 32 | /* |
| 33 | * Known environment variable names for the log levels of the project's |
| 34 | * modules. |
| 35 | */ |
| 36 | static const char* log_level_env_var_names[] = { |
| 37 | "BABELTRACE_PLUGIN_CTF_METADATA_LOG_LEVEL", |
| 38 | "BABELTRACE_PYTHON_BT2_LOG_LEVEL", |
| 39 | NULL, |
| 40 | }; |
| 41 | |
| 42 | static const int babeltrace2_default_log_level = BT_LOG_WARNING; |
| 43 | |
| 44 | void set_auto_log_levels(int *logging_level) |
| 45 | { |
| 46 | const char **env_var_name; |
| 47 | |
| 48 | /* Setting this is equivalent to passing --debug. */ |
| 49 | if (getenv("BABELTRACE_DEBUG") && |
| 50 | strcmp(getenv("BABELTRACE_DEBUG"), "1") == 0) { |
| 51 | *logging_level = logging_level_min(*logging_level, BT_LOG_TRACE); |
| 52 | } |
| 53 | |
| 54 | /* Setting this is equivalent to passing --verbose. */ |
| 55 | if (getenv("BABELTRACE_VERBOSE") && |
| 56 | strcmp(getenv("BABELTRACE_VERBOSE"), "1") == 0) { |
| 57 | *logging_level = logging_level_min(*logging_level, BT_LOG_INFO); |
| 58 | } |
| 59 | |
| 60 | /* |
| 61 | * logging_level is BT_LOG_NONE at this point if no log level was |
| 62 | * specified at all by the user. |
| 63 | */ |
| 64 | if (*logging_level == -1) { |
| 65 | *logging_level = babeltrace2_default_log_level; |
| 66 | } |
| 67 | |
| 68 | /* |
| 69 | * If the user hasn't requested a specific log level for the lib |
| 70 | * (through LIBBABELTRACE2_INIT_LOG_LEVEL), set it. |
| 71 | */ |
| 72 | if (!getenv("LIBBABELTRACE2_INIT_LOG_LEVEL")) { |
| 73 | bt_logging_set_global_level(*logging_level); |
| 74 | } |
| 75 | |
| 76 | /* |
| 77 | * If the user hasn't requested a specific log level for the CLI, |
| 78 | * (through BABELTRACE_CLI_LOG_LEVEL), set it. |
| 79 | */ |
| 80 | if (!getenv(ENV_BABELTRACE_CLI_LOG_LEVEL)) { |
| 81 | bt_cli_log_level = *logging_level; |
| 82 | } |
| 83 | |
| 84 | for (env_var_name = log_level_env_var_names; *env_var_name; env_var_name++) { |
| 85 | if (!getenv(*env_var_name)) { |
| 86 | char val[2] = { 0 }; |
| 87 | |
| 88 | /* |
| 89 | * Set module's default log level if not |
| 90 | * explicitly specified. |
| 91 | */ |
| 92 | val[0] = bt_log_get_letter_from_level(*logging_level); |
| 93 | g_setenv(*env_var_name, val, 1); |
| 94 | } |
| 95 | } |
| 96 | } |