59 lines
1.8 KiB
Python
59 lines
1.8 KiB
Python
# vi: ts=4 expandtab
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#
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# Copyright (C) 2012 Canonical Ltd.
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# Copyright (C) 2012 Yahoo! Inc.
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#
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# Author: Scott Moser <scott.moser@canonical.com>
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# Author: Joshua Harlow <harlowja@yahoo-inc.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3, as
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# published by the Free Software Foundation.
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#
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# This program 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
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import imp
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import logging
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import sys
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# Default fallback format
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FALL_FORMAT = ('FALLBACK: %(asctime)s - %(filename)s[%(levelname)s]: ' +
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'%(message)s')
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class QuietStreamHandler(logging.StreamHandler):
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def handleError(self, record):
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pass
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def _patch_logging():
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# Replace 'handleError' with one that will be more
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# tolerant of errors in that it can avoid
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# re-notifying on exceptions and when errors
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# do occur, it can at least try to write to
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# sys.stderr using a fallback logger
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fallback_handler = QuietStreamHandler(sys.stderr)
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fallback_handler.setFormatter(logging.Formatter(FALL_FORMAT))
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def handleError(self, record): # pylint: disable=W0613
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try:
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fallback_handler.handle(record)
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fallback_handler.flush()
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except IOError:
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pass
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setattr(logging.Handler, 'handleError', handleError)
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def patch():
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imp.acquire_lock()
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try:
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_patch_logging()
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finally:
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imp.release_lock()
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