""" Multicast DNS Service Discovery for Python, v0.14-wmcbrine

Copyright 2003 Paul Scott-Murphy, 2014 William McBrine

This module provides a framework for the use of DNS Service Discovery

using IP multicast.

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301

USA

"""

import logging

import sys

from typing import Any, Dict, Union, cast

log = logging.getLogger(__name__.split('.', maxsplit=1)[0])

log.addHandler(logging.NullHandler())

def set_logger_level_if_unset() -> None:

if log.level == logging.NOTSET:

log.setLevel(logging.WARN)

set_logger_level_if_unset()

class QuietLogger:

_seen_logs: Dict[str, Union[int, tuple]] = {}

@classmethod

def log_exception_warning(cls, *logger_data: Any) -> None:

exc_info = sys.exc_info()

exc_str = str(exc_info[1])

if exc_str not in cls._seen_logs:

# log at warning level the first time this is seen

cls._seen_logs[exc_str] = exc_info

logger = log.warning

else:

logger = log.debug

logger(*(logger_data or ['Exception occurred']), exc_info=True)

@classmethod

def log_exception_debug(cls, *logger_data: Any) -> None:

log_exc_info = False

exc_info = sys.exc_info()

exc_str = str(exc_info[1])

if exc_str not in cls._seen_logs:

# log the trace only on the first time

cls._seen_logs[exc_str] = exc_info

log_exc_info = True

log.debug(*(logger_data or ['Exception occurred']), exc_info=log_exc_info)

@classmethod

def log_warning_once(cls, *args: Any) -> None:

msg_str = args[0]

if msg_str not in cls._seen_logs:

cls._seen_logs[msg_str] = 0

logger = log.warning

else:

logger = log.debug

cls._seen_logs[msg_str] = cast(int, cls._seen_logs[msg_str]) + 1

logger(*args)

@classmethod

def log_exception_once(cls, exc: Exception, *args: Any) -> None:

msg_str = args[0]

if msg_str not in cls._seen_logs:

cls._seen_logs[msg_str] = 0

logger = log.warning

else:

logger = log.debug

cls._seen_logs[msg_str] = cast(int, cls._seen_logs[msg_str]) + 1

logger(*args, exc_info=exc)