55 lines
2 KiB
Python
55 lines
2 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright(C) 2010-2011 Christophe Benz
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#
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# This file is part of weboob.
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#
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# weboob is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# weboob 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 Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with weboob. If not, see <http://www.gnu.org/licenses/>.
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import logging
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import time
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__all__ = ['retry']
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def retry(ExceptionToCheck, tries=4, delay=3, backoff=2):
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"""
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Retry decorator
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from http://www.saltycrane.com/blog/2009/11/trying-out-retry-decorator-python/
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original from http://wiki.python.org/moin/PythonDecoratorLibrary#Retry
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"""
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def deco_retry(f):
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def f_retry(*args, **kwargs):
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mtries, mdelay = tries, delay
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mtries = kwargs.pop('_tries', mtries)
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mdelay = kwargs.pop('_delay', mdelay)
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try_one_last_time = True
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while mtries > 1:
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try:
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return f(*args, **kwargs)
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try_one_last_time = False
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break
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except ExceptionToCheck as e:
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try:
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logging.debug(u'%s, Retrying in %d seconds...' % (e, mdelay))
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except UnicodeDecodeError:
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logging.debug(u'%s, Retrying in %d seconds...' % (repr(e), mdelay))
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time.sleep(mdelay)
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mtries -= 1
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mdelay *= backoff
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if try_one_last_time:
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return f(*args, **kwargs)
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return
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return f_retry # true decorator
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return deco_retry
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