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annotate roundup/instance.py @ 604:13719594278b config-0-4-0-branch

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I've re-worked the config structure a little so it's simpler (one less file) and added a unit test so we can be sure it's working.
author Richard Jones <richard@users.sourceforge.net>
date Wed, 06 Feb 2002 07:11:13 +0000
parents bdc2ea127ae9
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1 #
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2 # Copyright (c) 2001 Bizar Software Pty Ltd (http://www.bizarsoftware.com.au/)
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3 # This module is free software, and you may redistribute it and/or modify
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4 # under the same terms as Python, so long as this copyright message and
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5 # disclaimer are retained in their original form.
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6 #
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7 # IN NO EVENT SHALL BIZAR SOFTWARE PTY LTD BE LIABLE TO ANY PARTY FOR
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8 # DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
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9 # OUT OF THE USE OF THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE
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10 # POSSIBILITY OF SUCH DAMAGE.
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11 #
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12 # BIZAR SOFTWARE PTY LTD SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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13 # BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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14 # FOR A PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS"
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15 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
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16 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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17 #
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18 # $Id: instance.py,v 1.5.2.1 2002-02-06 07:11:12 richard Exp $
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20 __doc__ = '''
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21 Instance handling (open instance).
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23 Currently this module provides one function: open. This function opens
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24 an instance.
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25 '''
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26
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27 import imp, os
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29 class Opener:
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30 def __init__(self):
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31 self.number = 0
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32 self.instances = {}
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34 def open(self, instance_home):
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35 '''Open the instance.
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36
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37 Raise ValueError if the instance home doesn't exist.
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38 '''
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39 if not os.path.exists(instance_home):
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40 raise ValueError, 'no such directory: "%s"'%instance_home
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42 if self.instances.has_key(instance_home):
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43 # already loaded
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44 instance = imp.load_package(self.instances[instance_home],
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45 instance_home)
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46 return instance
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48 # not loaded - make a module name for the instance
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49 self.number = self.number + 1
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50 modname = '_roundup_instance_%s'%self.number
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51 self.instances[instance_home] = modname
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53 # import the instance
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54 instance = imp.load_package(modname, instance_home)
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56 # load the config
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57 instance.instance_config = config.loadInstanceConfig(instance_home)
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59 # all done
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60 return instance
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62 opener = Opener()
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63 open = opener.open
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65 del Opener
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66 del opener
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69 #
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70 # $Log: not supported by cvs2svn $
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71 # Revision 1.5 2001/11/22 15:46:42 jhermann
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72 # Added module docstrings to all modules.
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73 #
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74 # Revision 1.4 2001/11/12 22:01:06 richard
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75 # Fixed issues with nosy reaction and author copies.
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76 #
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77 # Revision 1.3 2001/08/07 00:24:42 richard
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78 # stupid typo
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79 #
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80 # Revision 1.2 2001/08/07 00:15:51 richard
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81 # Added the copyright/license notice to (nearly) all files at request of
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82 # Bizar Software.
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83 #
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84 # Revision 1.1 2001/08/05 07:43:52 richard
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85 # Instances are now opened by a special function that generates a unique
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86 # module name for the instances on import time.
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87 #
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88 #
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89 #
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90 # vim: set filetype=python ts=4 sw=4 et si
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