67 lines
2.4 KiB
Python
67 lines
2.4 KiB
Python
import logging
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from mmcv.runner import get_dist_info
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def get_root_logger(log_file=None, log_level=logging.INFO):
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"""Get the root logger.
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The logger will be initialized if it has not been initialized. By default a
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StreamHandler will be added. If `log_file` is specified, a FileHandler will
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also be added. The name of the root logger is the top-level package name,
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e.g., "openselfsup".
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Args:
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log_file (str | None): The log filename. If specified, a FileHandler
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will be added to the root logger.
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log_level (int): The root logger level. Note that only the process of
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rank 0 is affected, while other processes will set the level to
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"Error" and be silent most of the time.
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Returns:
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logging.Logger: The root logger.
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"""
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logger = logging.getLogger(__name__.split('.')[0]) # i.e., openselfsup
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# if the logger has been initialized, just return it
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if logger.hasHandlers():
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return logger
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format_str = '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
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logging.basicConfig(format=format_str, level=log_level)
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rank, _ = get_dist_info()
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if rank != 0:
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logger.setLevel('ERROR')
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elif log_file is not None:
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file_handler = logging.FileHandler(log_file, 'w')
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file_handler.setFormatter(logging.Formatter(format_str))
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file_handler.setLevel(log_level)
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logger.addHandler(file_handler)
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return logger
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def print_log(msg, logger=None, level=logging.INFO):
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"""Print a log message.
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Args:
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msg (str): The message to be logged.
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logger (logging.Logger | str | None): The logger to be used. Some
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special loggers are:
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- "root": the root logger obtained with `get_root_logger()`.
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- "silent": no message will be printed.
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- None: The `print()` method will be used to print log messages.
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level (int): Logging level. Only available when `logger` is a Logger
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object or "root".
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"""
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if logger is None:
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print(msg)
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elif logger == 'root':
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_logger = get_root_logger()
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_logger.log(level, msg)
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elif isinstance(logger, logging.Logger):
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logger.log(level, msg)
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elif logger != 'silent':
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raise TypeError(
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'logger should be either a logging.Logger object, "root", '
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'"silent" or None, but got {}'.format(logger))
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