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logger.py
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logger.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2023 Pyorbital developers
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program 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 General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Functionality to support standard logging."""
import logging
def debug_on():
"""Turn debugging logging on."""
logging_on(logging.DEBUG)
_is_logging_on = False
def logging_on(level=logging.WARNING):
"""Turn logging on."""
global _is_logging_on
if not _is_logging_on:
console = logging.StreamHandler()
console.setFormatter(logging.Formatter("[%(levelname)s: %(asctime)s :"
" %(name)s] %(message)s",
'%Y-%m-%d %H:%M:%S'))
console.setLevel(level)
logging.getLogger('').addHandler(console)
_is_logging_on = True
log = logging.getLogger('')
log.setLevel(level)
for h in log.handlers:
h.setLevel(level)
class NullHandler(logging.Handler):
"""Empty handler."""
def emit(self, record):
"""Record a message."""
def logging_off():
"""Turn logging off."""
logging.getLogger('').handlers = [NullHandler()]
def get_logger(name):
"""Return logger with null handle."""
log = logging.getLogger(name)
if not log.handlers:
log.addHandler(NullHandler())
return log