diff options
Diffstat (limited to 'fg21sim/utils/logging.py')
| -rw-r--r-- | fg21sim/utils/logging.py | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/fg21sim/utils/logging.py b/fg21sim/utils/logging.py index bc827fc..d2bfa1f 100644 --- a/fg21sim/utils/logging.py +++ b/fg21sim/utils/logging.py @@ -12,6 +12,7 @@ from logging import FileHandler, StreamHandler def setup_logging(dict_config=None, level=None, stream=None, logfile=None): """Setup the logging. + This will override the logging configurations in the config file if specified (e.g., by command line arguments). @@ -20,30 +21,30 @@ def setup_logging(dict_config=None, level=None, stream=None, logfile=None): dict_config : dict Dict of logging configurations specified in the config file. If this parameter specified, the logging will be reconfigured. - level : string; + level : str; Override the existing log level stream : string; "stderr", "stdout", or "" This controls where the log messages go to. If not None, then override the old ``StreamHandler`` settings; if ``stream=""``, then disable the ``StreamHandler``. - logfile : string + logfile : str Specify the file where the log messages go to. If ``logfile=""``, then disable the ``FileHandler``. NOTE ---- If the logging already has ``StreamHandler`` or ``FileHandler`` - configured, then the old handler will be *replaced* (i.e., remove + configured, then the old handler will be **replaced** (i.e., remove the old one, then add the new one). """ - # default file open mode for logging to file + # Default file open mode for logging to file filemode = "a" root_logger = logging.getLogger() # if dict_config: - # XXX: - # "basicConfig()" does NOT accept paramter "filemode" if the - # corresponding parameter "filename" NOT specified. + # XXX/NOTE: + # ``basicConfig()`` does NOT accept parameter ``filemode`` if the + # corresponding parameter ``filename`` NOT specified. filemode = dict_config.pop("filemode", filemode) # Clear existing handlers, otherwise further "basicConfig" calls # will be ignored @@ -55,15 +56,16 @@ def setup_logging(dict_config=None, level=None, stream=None, logfile=None): # the handlers to the "root" logger. logging.basicConfig(**dict_config) # - # Configured logging has at least one handler with configured formatter. - # Keep the existing formatter to keep the configured format styles. - formatter = root_logger.handlers[0].formatter if level is not None: level_int = getattr(logging, level.upper(), None) if not isinstance(level_int, int): raise ValueError("invalid log level: %s" % level) root_logger.setLevel(level_int) # + # Configured logging has at least one handler with configured formatter. + # Store the existing formatter to preserve the configured format styles. + formatter = root_logger.handlers[0].formatter + # if stream is None: pass elif stream in ["", "stderr", "stdout"]: @@ -73,10 +75,10 @@ def setup_logging(dict_config=None, level=None, stream=None, logfile=None): handler.close() root_logger.removeHandler(handler) if stream == "": - # disable ``StreamHandler`` + # ``StreamHandler`` already disabled pass else: - # add new ``StreamHandler`` + # Add new ``StreamHandler`` handler = StreamHandler(getattr(sys, stream)) handler.setFormatter(formatter) root_logger.addHandler(handler) @@ -91,10 +93,10 @@ def setup_logging(dict_config=None, level=None, stream=None, logfile=None): handler.close() root_logger.removeHandler(handler) if logfile == "": - # disable ``FileHandler`` + # ``FileHandler`` already disabled pass else: - # add new ``FileHandler`` + # Add new ``FileHandler`` handler = FileHandler(logfile, mode=filemode) handler.setFormatter(formatter) root_logger.addHandler(handler) |