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annotate roundup/instance.py @ 2795:4992da7c96ae

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roundup-demo man page
author Richard Jones <richard@users.sourceforge.net>
date Wed, 20 Oct 2004 05:01:33 +0000
parents 402d6d556558
children 7f1e17aeca1b
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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 1.24 2004-10-08 05:37:44 richard 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, mailgw, rlog
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28 from roundup import hyperdb, backends
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29 from roundup.cgi import client
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30
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31 class Vars:
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32 def __init__(self, vars):
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33 self.__dict__.update(vars)
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34
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35 class Tracker:
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36 def __init__(self, tracker_home):
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37 self.tracker_home = tracker_home
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38 self.config = configuration.CoreConfig(tracker_home)
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39 self.cgi_actions = {}
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40 self.templating_utils = {}
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41
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42 def get_backend_name(self):
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43 o = __builtins__['open']
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44 f = o(os.path.join(self.tracker_home, 'db', 'backend_name'))
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45 name = f.readline().strip()
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46 f.close()
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47 return name
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48
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49 def get_backend(self):
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50 name = self.get_backend_name()
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51 return getattr(backends, name)
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52
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53 def open(self, name):
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54 backend = self.get_backend()
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55 vars = {
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56 'Class': backend.Class,
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57 'FileClass': backend.FileClass,
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58 'IssueClass': backend.IssueClass,
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59 'String': hyperdb.String,
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60 'Password': hyperdb.Password,
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61 'Date': hyperdb.Date,
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62 'Link': hyperdb.Link,
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63 'Multilink': hyperdb.Multilink,
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64 'Interval': hyperdb.Interval,
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65 'Boolean': hyperdb.Boolean,
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66 'Number': hyperdb.Number,
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67 'db': backend.Database(self.config, name)
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68 }
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69 self._load_python('schema.py', vars)
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70 db = vars['db']
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71
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72 self.load_interfaces()
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73 self.load_extensions(db, 'detectors')
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74 self.load_extensions(self, 'extensions')
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75
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76 db.post_init()
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77 return db
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78
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79 def load_interfaces(self):
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80 """load interfaces.py (if any), initialize Client and MailGW attrs"""
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81 vars = {}
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82 if os.path.isfile(os.path.join(self.tracker_home, 'interfaces.py')):
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83 self._load_python('interfaces.py', vars)
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84 self.Client = vars.get('Client', client.Client)
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85 self.MailGW = vars.get('MailGW', mailgw.MailGW)
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86
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87 def load_extensions(self, parent, dirname):
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88 dirpath = os.path.join(self.tracker_home, dirname)
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89 if os.path.isdir(dirpath):
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90 for name in os.listdir(dirpath):
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91 if not name.endswith('.py'):
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92 continue
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93 vars = {}
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94 self._load_python(os.path.join(dirname, name), vars)
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95 vars['init'](parent)
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96
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97 def init(self, adminpw):
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98 db = self.open('admin')
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99 self._load_python('initial_data.py', {'db': db, 'adminpw': adminpw,
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100 'admin_email': self.config['ADMIN_EMAIL']})
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101 db.commit()
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102 db.close()
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103
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104 def exists(self):
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105 backend = self.get_backend()
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106 return backend.db_exists(self.config)
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107
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108 def nuke(self):
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109 backend = self.get_backend()
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110 backend.db_nuke(self.config)
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111
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112 def _load_python(self, file, vars):
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113 file = os.path.join(self.tracker_home, file)
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114 execfile(file, vars)
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115 return vars
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116
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117 def registerAction(self, name, action):
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118 self.cgi_actions[name] = action
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119
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120 def registerUtil(self, name, function):
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121 self.templating_utils[name] = function
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122
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123 class TrackerError(Exception):
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124 pass
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125
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126
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127 class OldStyleTrackers:
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128 def __init__(self):
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129 self.number = 0
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130 self.trackers = {}
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131
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132 def open(self, tracker_home):
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133 ''' Open the tracker.
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134
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135 Raise ValueError if the tracker home doesn't exist.
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136 '''
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137 import imp
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138 # sanity check existence of tracker home
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139 if not os.path.exists(tracker_home):
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140 raise ValueError, 'no such directory: "%s"'%tracker_home
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141
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142 # sanity check tracker home contents
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143 for reqd in 'config dbinit select_db interfaces'.split():
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144 if not os.path.exists(os.path.join(tracker_home, '%s.py'%reqd)):
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145 raise TrackerError, 'File "%s.py" missing from tracker '\
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146 'home "%s"'%(reqd, tracker_home)
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147
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148 if self.trackers.has_key(tracker_home):
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149 return imp.load_package(self.trackers[tracker_home],
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150 tracker_home)
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151 self.number = self.number + 1
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152 modname = '_roundup_tracker_%s'%self.number
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153 self.trackers[tracker_home] = modname
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154
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155 # load the tracker
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156 tracker = imp.load_package(modname, tracker_home)
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157
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158 # ensure the tracker has all the required bits
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159 for required in 'open init Client MailGW'.split():
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160 if not hasattr(tracker, required):
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161 raise TrackerError, \
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162 'Required tracker attribute "%s" missing'%required
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163
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164 # load and apply the config
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165 tracker.config = configuration.CoreConfig(tracker_home)
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166 # FIXME! dbinit does "import config".
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167 # What would be the upgrade plan for existing trackers?
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168 tracker.dbinit.config = tracker.config
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169
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170 return tracker
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171
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172 OldStyleTrackers = OldStyleTrackers()
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173 def open(tracker_home):
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174 if os.path.exists(os.path.join(tracker_home, 'dbinit.py')):
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175 # user should upgrade...
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176 return OldStyleTrackers.open(tracker_home)
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177
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178 return Tracker(tracker_home)
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179
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180 # vim: set filetype=python sts=4 sw=4 et si :
Roundup Issue Tracker: http://roundup-tracker.org/