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annotate roundup/instance.py @ 2497:e27578fc4e37

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export now stores file "content" in separate files in export directory
author Richard Jones <richard@users.sourceforge.net>
date Thu, 24 Jun 2004 07:05:04 +0000
parents fa50e1347397
children eeadb59213d8
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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 1.14 2004-06-08 05:29:18 richard Exp $
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19
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20 '''Tracker handling (open tracker).
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21
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22 Backwards compatibility for the old-style "imported" trackers.
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23 '''
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24 __docformat__ = 'restructuredtext'
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25
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26 import os
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27 from roundup import rlog
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28
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29 class Vars:
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30 ''' I'm just a container '''
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31
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32 class Tracker:
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33 def __init__(self, tracker_home):
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34 self.tracker_home = tracker_home
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35 self.select_db = self._load_python('select_db.py')
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36 self.config = self._load_config('config.py')
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37 raise NotImplemented, 'this is *so* not finished'
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38 self.init = XXX
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39 self.Client = XXX
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40 self.MailGW = XXX
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41
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42 def open(self):
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43 return self._load_config('schema.py').db
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44 self._load_config('security.py', db=db)
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46
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47 def _load_python(self, file):
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48 file = os.path.join(self.tracker_home, file)
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49 vars = Vars()
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50 execfile(file, vars.__dict__)
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51 return vars
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54 class TrackerError(Exception):
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55 pass
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56
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57
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58 class OldStyleTrackers:
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59 def __init__(self):
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60 self.number = 0
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61 self.trackers = {}
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63 def open(self, tracker_home):
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64 ''' Open the tracker.
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65
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66 Raise ValueError if the tracker home doesn't exist.
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67 '''
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68 import imp
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69 # sanity check existence of tracker home
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70 if not os.path.exists(tracker_home):
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71 raise ValueError, 'no such directory: "%s"'%tracker_home
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72
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73 # sanity check tracker home contents
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74 for reqd in 'config dbinit select_db interfaces'.split():
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75 if not os.path.exists(os.path.join(tracker_home, '%s.py'%reqd)):
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76 raise TrackerError, 'File "%s.py" missing from tracker '\
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77 'home "%s"'%(reqd, tracker_home)
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78
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79 if self.trackers.has_key(tracker_home):
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80 return imp.load_package(self.trackers[tracker_home],
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81 tracker_home)
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82 self.number = self.number + 1
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83 modname = '_roundup_tracker_%s'%self.number
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84 self.trackers[tracker_home] = modname
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85
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86 # load the tracker
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87 tracker = imp.load_package(modname, tracker_home)
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88
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89 # ensure the tracker has all the required bits
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90 for required in 'config open init Client MailGW'.split():
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91 if not hasattr(tracker, required):
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92 raise TrackerError, \
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93 'Required tracker attribute "%s" missing'%required
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94
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95 # init the logging
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96 config = tracker.config
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97 if hasattr(config, 'LOGGING_CONFIG'):
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98 try:
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99 import logging
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100 config.logging = logging
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101 except ImportError, msg:
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102 raise TrackerError, 'Python logging module unavailable: %s'%msg
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103 config.logging.fileConfig(config.LOGGING_CONFIG)
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104 elif hasattr(config, 'LOGGING_FILENAME'):
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105 config.logging = rlog.BasicLogging()
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106 config.logging.setFile(config.LOGGING_FILENAME)
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107 if hasattr(config, 'LOGGING_LEVEL'):
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108 config.logging.setLevel(config.LOGGING_LEVEL)
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109 else:
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110 config.logging = rlog.BasicLogging()
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111 config.logging.setLevel('ERROR')
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112
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113 return tracker
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114
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115 OldStyleTrackers = OldStyleTrackers()
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116 def open(tracker_home):
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117 if os.path.exists(os.path.join(tracker_home, 'dbinit.py')):
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118 # user should upgrade...
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119 return OldStyleTrackers.open(tracker_home)
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120
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121 return Tracker(tracker_home)
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122
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123 # vim: set filetype=python ts=4 sw=4 et si
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