SYNOPSIS

bool
mongoc_structured_log_opts_set_max_levels_from_env (mongoc_structured_log_opts_t *opts);

Sets any maximum log levels requested by environment variables: MONGODB_LOG_ALL for all components, followed by per-component log levels MONGODB_LOG_COMMAND, MONGODB_LOG_CONNECTION, MONGODB_LOG_TOPOLOGY, and MONGODB_LOG_SERVER_SELECTION.

Expects the value to be recognizable by mongoc_structured_log_get_named_level(). Parse errors may cause a warning message, delivered via unstructured logging.

Component levels with no valid environment variable setting will be left unmodified.

This happens automatically when mongoc_structured_log_opts_new() establishes defaults. Any subsequent programmatic modifications to the mongoc_structured_log_opts_t will override the environment variable settings. For applications that desire the opposite behavior, where environment variables may override programmatic settings, they may call mongoc_structured_log_opts_set_max_levels_from_env() after calling mongoc_structured_log_opts_set_max_level_for_component() and mongoc_structured_log_opts_set_max_level_for_all_components(). This will process the environment a second time, allowing it to override customized defaults.

RETURNS

Returns true on success. If warnings are encountered in the environment, returns false and may log additional information to the unstructured logging facility. Note that, by design, these errors are by default non-fatal. When mongoc_structured_log_opts_new() internally calls this function, it ignores the return value.

SEE ALSO:

Structured Logging

AUTHOR

MongoDB, Inc

COPYRIGHT

2009-present, MongoDB, Inc.