Mercurial > p > roundup > code

annotate roundup/instance.py @ 2670:bdf3a73dfd04

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merge from maint-0-7
author Richard Jones <richard@users.sourceforge.net>
date Tue, 07 Sep 2004 10:40:15 +0000
parents 8c46091c36d0
children 1f0143b53bee
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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 1.19 2004-07-27 11:34:11 a1s Exp $
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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 configuration, rlog
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28 from roundup import hyperdb, backends
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29
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30 class Vars:
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31 def __init__(self, vars):
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32 self.__dict__.update(vars)
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33
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34 class Tracker:
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35 def __init__(self, tracker_home):
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36 self.tracker_home = tracker_home
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37 self.config = configuration.CoreConfig(tracker_home)
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38 self.cgi_actions = {}
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39 self.templating_utils = {}
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40
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41 def get_backend(self):
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42 o = __builtins__['open']
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43 f = o(os.path.join(self.tracker_home, 'db', 'backend_name'))
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44 name = f.readline().strip()
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45 f.close()
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46 return getattr(backends, name)
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47
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48 def open(self, name):
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49 backend = self.get_backend()
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50 vars = {
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51 'Class': backend.Class,
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52 'FileClass': backend.FileClass,
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53 'IssueClass': backend.IssueClass,
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54 'String': hyperdb.String,
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55 'Password': hyperdb.Password,
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56 'Date': hyperdb.Date,
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57 'Link': hyperdb.Link,
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58 'Multilink': hyperdb.Multilink,
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59 'Interval': hyperdb.Interval,
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60 'Boolean': hyperdb.Boolean,
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61 'Number': hyperdb.Number,
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62 'db': backend.Database(self.config, name)
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63 }
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64 self._load_python('schema.py', vars)
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65 db = vars['db']
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66
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67 self.load_extensions(db, 'detectors')
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68
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69 self.load_extensions(self, 'extensions')
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70
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71 db.post_init()
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72 return db
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73
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74 def load_extensions(self, parent, dirname):
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75 dirname = os.path.join(self.tracker_home, dirname)
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76 for name in os.listdir(dirname):
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77 if not name.endswith('.py'):
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78 continue
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79 vars = {}
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80 self._load_python(os.path.join(dirname, name), vars)
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81 vars['init'](parent)
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82
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83 def init(self, adminpw):
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84 db = self.open('admin')
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85 self._load_python('initial_data.py', {'db': db, 'adminpw': adminpw,
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86 'admin_email': self.config['ADMIN_EMAIL']})
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87 db.commit()
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88 db.close()
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89
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90 def exists(self):
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91 backend = self.get_backend()
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92 return backend.db_exists(self.config)
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93
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94 def nuke(self):
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95 backend = self.get_backend()
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96 backend.db_nuke(self.config)
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97
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98 def _load_python(self, file, vars):
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99 file = os.path.join(self.tracker_home, file)
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100 execfile(file, vars)
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101 return vars
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102
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103 def registerAction(self, name, action):
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104 self.cgi_actions[name] = action
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105
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106 def registerUtil(self, name, function):
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107 self.templating_utils[name] = function
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108
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109 class TrackerError(Exception):
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110 pass
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111
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112
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113 class OldStyleTrackers:
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114 def __init__(self):
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115 self.number = 0
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116 self.trackers = {}
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117
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118 def open(self, tracker_home):
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119 ''' Open the tracker.
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120
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121 Raise ValueError if the tracker home doesn't exist.
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122 '''
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123 import imp
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124 # sanity check existence of tracker home
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125 if not os.path.exists(tracker_home):
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126 raise ValueError, 'no such directory: "%s"'%tracker_home
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127
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128 # sanity check tracker home contents
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129 for reqd in 'config dbinit select_db interfaces'.split():
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130 if not os.path.exists(os.path.join(tracker_home, '%s.py'%reqd)):
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131 raise TrackerError, 'File "%s.py" missing from tracker '\
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132 'home "%s"'%(reqd, tracker_home)
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133
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134 if self.trackers.has_key(tracker_home):
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135 return imp.load_package(self.trackers[tracker_home],
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136 tracker_home)
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137 self.number = self.number + 1
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138 modname = '_roundup_tracker_%s'%self.number
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139 self.trackers[tracker_home] = modname
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140
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141 # load the tracker
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142 tracker = imp.load_package(modname, tracker_home)
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143
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144 # ensure the tracker has all the required bits
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145 for required in 'open init Client MailGW'.split():
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146 if not hasattr(tracker, required):
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147 raise TrackerError, \
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148 'Required tracker attribute "%s" missing'%required
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149
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150 # load and apply the config
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151 tracker.config = configuration.CoreConfig(tracker_home)
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152 # FIXME! dbinit does "import config".
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153 # What would be the upgrade plan for existing trackers?
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154 tracker.dbinit.config = tracker.config
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155
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156 return tracker
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157
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158 OldStyleTrackers = OldStyleTrackers()
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159 def open(tracker_home):
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160 if os.path.exists(os.path.join(tracker_home, 'dbinit.py')):
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161 # user should upgrade...
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162 return OldStyleTrackers.open(tracker_home)
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163
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164 return Tracker(tracker_home)
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165
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166 # vim: set filetype=python sts=4 sw=4 et si :
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