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annotate roundup/backends/locking.py @ 7340:7b9bddda9d2d

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Add support for demo mode in docker. roundup/demo.py Make changes to allow exposed port in docker to be specified separately from the port that demo mode binds to. Also permit bind address specification as well. roundup/scripts/roundup_demo.py: Update required by changes in demo.py. Also move away from positional arguments to prefer flag arguments. Required for passing port and host specification. Flake8 fixes. share/man/man1/roundup-demo.1 Document use of option flags rather than positional params. Other cleanups. doc/installation.txt: Document new docker modes: demo, shell and admin. Update docs: overview section - reorg, added template info for the impatient section - added docker demo mode reference, more docs on top level demo.py use. new section on docker demo mode removed getting roundup section. folded into installing roundup. also prior for the impatient section describes how to download. install via pip in venv recommended supported method document all provided templates. not just minimal and classic. added index references. move sections around, decreased sectin depth, reformatting scripts/Docker/roundup_healthcheck: When running roundup-demo, there is no tracker spec. So default to demo if no tracker=directory args found. Prevent's docker from reporting an unhealthy container when running demo. scripts/Docker/roundup_start: implement demo, shell, admin docker modes.
author John Rouillard <rouilj@ieee.org>
date Sun, 14 May 2023 09:43:53 -0400
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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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
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27 __docformat__ = 'restructuredtext'
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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)
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