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annotate roundup/backends/locking.py @ 5973:fe334430ca07

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issue2550919 - Anti-bot signup using 4 second delay Took the code by erik forsberg and massaged it into the core. So this is no longer needed in the tracker. Updated devel and responsive trackers to remove timestamp.py and update input field name. Docs, changes and tests complete. Hopefully these tracker changes won't cause an issue for other tests.
author John Rouillard <rouilj@ieee.org>
date Sat, 09 Nov 2019 00:30:37 -0500
parents 6e3e4f24c753
children 608f140237c9
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1 #! /usr/bin/env python
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2 # Copyright (c) 2002 ekit.com Inc (http://www.ekit-inc.com/)
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3 #
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4 # Permission is hereby granted, free of charge, to any person obtaining a copy
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5 # of this software and associated documentation files (the "Software"), to deal
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6 # in the Software without restriction, including without limitation the rights
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7 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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8 # copies of the Software, and to permit persons to whom the Software is
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9 # furnished to do so, subject to the following conditions:
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10 #
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11 # The above copyright notice and this permission notice shall be included in
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12 # all copies or substantial portions of the Software.
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13 #
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14 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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15 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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16 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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17 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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18 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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20 # SOFTWARE.
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21
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22 '''This module provides a generic interface to acquire and release
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23 exclusive access to a file.
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25 It should work on Unix and Windows.
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26 '''
2005
fc52d57c6c3e documentation cleanup
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27 __docformat__ = 'restructuredtext'
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28
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13b3155869e0 Beginnings of a big code cleanup / modernisation to make 2to3 happy
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29 from roundup.backends import portalocker
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31 def acquire_lock(path, block=1):
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32 '''Acquire a lock for the given path
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33 '''
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34 file = open(path, 'w')
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35 if block:
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36 portalocker.lock(file, portalocker.LOCK_EX)
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37 else:
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38 portalocker.lock(file, portalocker.LOCK_EX|portalocker.LOCK_NB)
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39 return file
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40
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41 def release_lock(file):
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42 '''Release our lock on the given path
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43 '''
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44 portalocker.unlock(file)
Roundup Issue Tracker: http://roundup-tracker.org/