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47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
"""Auxiliary functions used for logging module.
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"""
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# Copyright The Mbed TLS Contributors
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# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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#
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import logging
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import sys
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def configure_logger(
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logger: logging.Logger,
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log_format="[%(levelname)s]: %(message)s",
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split_level=logging.WARNING
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) -> None:
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"""
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Configure the logging.Logger instance so that:
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- Format is set to any log_format.
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Default: "[%(levelname)s]: %(message)s"
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- loglevel >= split_level are printed to stderr.
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- loglevel < split_level are printed to stdout.
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Default: logging.WARNING
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"""
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class MaxLevelFilter(logging.Filter):
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# pylint: disable=too-few-public-methods
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def __init__(self, max_level, name=''):
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super().__init__(name)
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self.max_level = max_level
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def filter(self, record: logging.LogRecord) -> bool:
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return record.levelno <= self.max_level
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log_formatter = logging.Formatter(log_format)
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# set loglevel >= split_level to be printed to stderr
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stderr_hdlr = logging.StreamHandler(sys.stderr)
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stderr_hdlr.setLevel(split_level)
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stderr_hdlr.setFormatter(log_formatter)
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# set loglevel < split_level to be printed to stdout
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stdout_hdlr = logging.StreamHandler(sys.stdout)
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stdout_hdlr.addFilter(MaxLevelFilter(split_level - 1))
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stdout_hdlr.setFormatter(log_formatter)
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logger.addHandler(stderr_hdlr)
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logger.addHandler(stdout_hdlr)
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