87 lines
2.9 KiB
Python
87 lines
2.9 KiB
Python
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""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine
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)
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Copyright 2003 Paul Scott-Murphy, 2014 William McBrine
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This module provides a framework for the use of DNS Service Discovery
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using IP multicast.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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"""
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import logging
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import sys
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from typing import Any, Dict, Union, cast
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log = logging.getLogger(__name__.split('.', maxsplit=1)[0])
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log.addHandler(logging.NullHandler())
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def set_logger_level_if_unset() -> None:
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if log.level == logging.NOTSET:
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log.setLevel(logging.WARN)
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set_logger_level_if_unset()
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class QuietLogger:
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_seen_logs: Dict[str, Union[int, tuple]] = {}
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@classmethod
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def log_exception_warning(cls, *logger_data: Any) -> None:
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exc_info = sys.exc_info()
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exc_str = str(exc_info[1])
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if exc_str not in cls._seen_logs:
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# log at warning level the first time this is seen
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cls._seen_logs[exc_str] = exc_info
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logger = log.warning
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else:
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logger = log.debug
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logger(*(logger_data or ['Exception occurred']), exc_info=True)
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@classmethod
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def log_exception_debug(cls, *logger_data: Any) -> None:
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log_exc_info = False
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exc_info = sys.exc_info()
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exc_str = str(exc_info[1])
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if exc_str not in cls._seen_logs:
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# log the trace only on the first time
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cls._seen_logs[exc_str] = exc_info
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log_exc_info = True
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log.debug(*(logger_data or ['Exception occurred']), exc_info=log_exc_info)
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@classmethod
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def log_warning_once(cls, *args: Any) -> None:
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msg_str = args[0]
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if msg_str not in cls._seen_logs:
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cls._seen_logs[msg_str] = 0
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logger = log.warning
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else:
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logger = log.debug
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cls._seen_logs[msg_str] = cast(int, cls._seen_logs[msg_str]) + 1
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logger(*args)
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@classmethod
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def log_exception_once(cls, exc: Exception, *args: Any) -> None:
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msg_str = args[0]
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if msg_str not in cls._seen_logs:
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cls._seen_logs[msg_str] = 0
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logger = log.warning
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else:
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logger = log.debug
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cls._seen_logs[msg_str] = cast(int, cls._seen_logs[msg_str]) + 1
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logger(*args, exc_info=exc)
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