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import logging
import sys
from typing import Union
from rq.utils import ColorizingStreamHandler
from rq.defaults import DEFAULT_LOGGING_FORMAT, DEFAULT_LOGGING_DATE_FORMAT
def setup_loghandlers(
level: Union[int, str, None] = None,
date_format: str = DEFAULT_LOGGING_DATE_FORMAT,
log_format: str = DEFAULT_LOGGING_FORMAT,
name: str = 'rq.worker',
):
"""Sets up a log handler.
Args:
level (Union[int, str, None], optional): The log level.
Access an integer level (10-50) or a string level ("info", "debug" etc). Defaults to None.
date_format (str, optional): The date format to use. Defaults to DEFAULT_LOGGING_DATE_FORMAT ('%H:%M:%S').
log_format (str, optional): The log format to use. Defaults to DEFAULT_LOGGING_FORMAT ('%(asctime)s %(message)s').
name (str, optional): The looger name. Defaults to 'rq.worker'.
"""
logger = logging.getLogger(name)
if not _has_effective_handler(logger):
formatter = logging.Formatter(fmt=log_format, datefmt=date_format)
handler = ColorizingStreamHandler(stream=sys.stdout)
handler.setFormatter(formatter)
handler.addFilter(lambda record: record.levelno < logging.ERROR)
error_handler = ColorizingStreamHandler(stream=sys.stderr)
error_handler.setFormatter(formatter)
error_handler.addFilter(lambda record: record.levelno >= logging.ERROR)
logger.addHandler(handler)
logger.addHandler(error_handler)
if level is not None:
# The level may be a numeric value (e.g. when using the logging module constants)
# Or a string representation of the logging level
logger.setLevel(level if isinstance(level, int) else level.upper())
def _has_effective_handler(logger) -> bool:
"""
Checks if a logger has a handler that will catch its messages in its logger hierarchy.
Args:
logger (logging.Logger): The logger to be checked.
Returns:
is_configured (bool): True if a handler is found for the logger, False otherwise.
"""
while True:
if logger.handlers:
return True
if not logger.parent:
return False
logger = logger.parent
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