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| # Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved | |
| import functools | |
| import logging | |
| import os | |
| import sys | |
| from termcolor import colored | |
| class _ColorfulFormatter(logging.Formatter): | |
| def __init__(self, *args, **kwargs): | |
| self._root_name = kwargs.pop("root_name") + "." | |
| self._abbrev_name = kwargs.pop("abbrev_name", "") | |
| if len(self._abbrev_name): | |
| self._abbrev_name = self._abbrev_name + "." | |
| super(_ColorfulFormatter, self).__init__(*args, **kwargs) | |
| def formatMessage(self, record): | |
| record.name = record.name.replace(self._root_name, self._abbrev_name) | |
| log = super(_ColorfulFormatter, self).formatMessage(record) | |
| if record.levelno == logging.WARNING: | |
| prefix = colored("WARNING", "red", attrs=["blink"]) | |
| elif record.levelno == logging.ERROR or record.levelno == logging.CRITICAL: | |
| prefix = colored("ERROR", "red", attrs=["blink", "underline"]) | |
| else: | |
| return log | |
| return prefix + " " + log | |
| # so that calling setup_logger multiple times won't add many handlers | |
| def setup_logger(output=None, distributed_rank=0, *, color=True, name="imagenet", abbrev_name=None): | |
| """ | |
| Initialize the detectron2 logger and set its verbosity level to "INFO". | |
| Args: | |
| output (str): a file name or a directory to save log. If None, will not save log file. | |
| If ends with ".txt" or ".log", assumed to be a file name. | |
| Otherwise, logs will be saved to `output/log.txt`. | |
| name (str): the root module name of this logger | |
| Returns: | |
| logging.Logger: a logger | |
| """ | |
| logger = logging.getLogger(name) | |
| logger.setLevel(logging.DEBUG) | |
| logger.propagate = False | |
| if abbrev_name is None: | |
| abbrev_name = name | |
| plain_formatter = logging.Formatter( | |
| "[%(asctime)s.%(msecs)03d]: %(message)s", datefmt="%m/%d %H:%M:%S" | |
| ) | |
| # stdout logging: master only | |
| if distributed_rank == 0: | |
| ch = logging.StreamHandler(stream=sys.stdout) | |
| ch.setLevel(logging.DEBUG) | |
| if color: | |
| formatter = _ColorfulFormatter( | |
| colored("[%(asctime)s.%(msecs)03d]: ", "green") + "%(message)s", | |
| datefmt="%m/%d %H:%M:%S", | |
| root_name=name, | |
| abbrev_name=str(abbrev_name), | |
| ) | |
| else: | |
| formatter = plain_formatter | |
| ch.setFormatter(formatter) | |
| logger.addHandler(ch) | |
| # file logging: all workers | |
| if output is not None: | |
| if output.endswith(".txt") or output.endswith(".log"): | |
| filename = output | |
| else: | |
| filename = os.path.join(output, "log.txt") | |
| if distributed_rank > 0: | |
| filename = filename + f".rank{distributed_rank}" | |
| os.makedirs(os.path.dirname(filename), exist_ok=True) | |
| fh = logging.StreamHandler(_cached_log_stream(filename)) | |
| fh.setLevel(logging.DEBUG) | |
| fh.setFormatter(plain_formatter) | |
| logger.addHandler(fh) | |
| return logger | |
| # cache the opened file object, so that different calls to `setup_logger` | |
| # with the same file name can safely write to the same file. | |
| def _cached_log_stream(filename): | |
| return open(filename, "a") | |