Mercurial > p > roundup > code

annotate roundup/instance.py @ 2852:37e6ebd5ba29

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when preloading trackers (not running in 'debug' mode)... ...open the trackers with 'optimize' parameter set.
author Alexander Smishlajev <a1s@users.sourceforge.net>
date Tue, 02 Nov 2004 10:02:05 +0000
parents 96626831def1
children adec352e2ce0
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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 1.27 2004-11-02 10:00:36 a1s 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 configuration, mailgw, rlog
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28 from roundup import hyperdb, backends
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29 from roundup.cgi import client, templating
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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, optimize=0):
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37 """New-style tracker instance constructor
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38
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39 Parameters:
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40 tracker_home:
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41 tracker home directory
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42 optimize:
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43 if set, precompile html templates
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44
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45 """
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46 self.tracker_home = tracker_home
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47 self.optimize = optimize
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48 self.config = configuration.CoreConfig(tracker_home)
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49 self.cgi_actions = {}
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50 self.templating_utils = {}
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51 self.load_interfaces()
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52 self.templates = templating.Templates(self.config["TEMPLATES"])
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53 if self.optimize:
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54 self.templates.precompileTemplates()
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55
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56 def get_backend_name(self):
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57 o = __builtins__['open']
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58 f = o(os.path.join(self.tracker_home, 'db', 'backend_name'))
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59 name = f.readline().strip()
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60 f.close()
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61 return name
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62
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63 def get_backend(self):
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64 name = self.get_backend_name()
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65 return getattr(backends, name)
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66
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67 def open(self, name=None):
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68 backend = self.get_backend()
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69 vars = {
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70 'Class': backend.Class,
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71 'FileClass': backend.FileClass,
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72 'IssueClass': backend.IssueClass,
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73 'String': hyperdb.String,
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74 'Password': hyperdb.Password,
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75 'Date': hyperdb.Date,
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76 'Link': hyperdb.Link,
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77 'Multilink': hyperdb.Multilink,
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78 'Interval': hyperdb.Interval,
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79 'Boolean': hyperdb.Boolean,
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80 'Number': hyperdb.Number,
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81 'db': backend.Database(self.config, name)
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82 }
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83 self._load_python('schema.py', vars)
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84 db = vars['db']
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85
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86 self.load_extensions(db, 'detectors')
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87 self.load_extensions(self, 'extensions')
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88
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89 db.post_init()
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90 return db
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91
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92 def load_interfaces(self):
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93 """load interfaces.py (if any), initialize Client and MailGW attrs"""
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94 vars = {}
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95 if os.path.isfile(os.path.join(self.tracker_home, 'interfaces.py')):
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96 self._load_python('interfaces.py', vars)
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97 self.Client = vars.get('Client', client.Client)
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98 self.MailGW = vars.get('MailGW', mailgw.MailGW)
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99
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100 def load_extensions(self, parent, dirname):
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101 dirpath = os.path.join(self.tracker_home, dirname)
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102 if os.path.isdir(dirpath):
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103 for name in os.listdir(dirpath):
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104 if not name.endswith('.py'):
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105 continue
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106 vars = {}
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107 self._load_python(os.path.join(dirname, name), vars)
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108 vars['init'](parent)
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109
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110 def init(self, adminpw):
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111 db = self.open('admin')
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112 self._load_python('initial_data.py', {'db': db, 'adminpw': adminpw,
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113 'admin_email': self.config['ADMIN_EMAIL']})
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114 db.commit()
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115 db.close()
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116
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117 def exists(self):
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118 backend = self.get_backend()
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119 return backend.db_exists(self.config)
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120
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121 def nuke(self):
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122 backend = self.get_backend()
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123 backend.db_nuke(self.config)
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124
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125 def _load_python(self, file, vars):
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126 file = os.path.join(self.tracker_home, file)
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127 execfile(file, vars)
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128 return vars
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129
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130 def registerAction(self, name, action):
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131 self.cgi_actions[name] = action
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132
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133 def registerUtil(self, name, function):
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134 self.templating_utils[name] = function
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135
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136 class TrackerError(Exception):
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137 pass
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138
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139
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140 class OldStyleTrackers:
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141 def __init__(self):
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142 self.number = 0
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143 self.trackers = {}
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144
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145 def open(self, tracker_home, optimize=0):
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146 """Open the tracker.
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147
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148 Parameters:
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149 tracker_home:
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150 tracker home directory
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151 optimize:
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152 if set, precompile html templates
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153
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154 Raise ValueError if the tracker home doesn't exist.
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155
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156 """
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157 import imp
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158 # sanity check existence of tracker home
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159 if not os.path.exists(tracker_home):
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160 raise ValueError, 'no such directory: "%s"'%tracker_home
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161
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162 # sanity check tracker home contents
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163 for reqd in 'config dbinit select_db interfaces'.split():
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164 if not os.path.exists(os.path.join(tracker_home, '%s.py'%reqd)):
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165 raise TrackerError, 'File "%s.py" missing from tracker '\
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166 'home "%s"'%(reqd, tracker_home)
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167
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168 if self.trackers.has_key(tracker_home):
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169 return imp.load_package(self.trackers[tracker_home],
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170 tracker_home)
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171 self.number = self.number + 1
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172 modname = '_roundup_tracker_%s'%self.number
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173 self.trackers[tracker_home] = modname
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174
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175 # load the tracker
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176 tracker = imp.load_package(modname, tracker_home)
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177
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178 # ensure the tracker has all the required bits
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179 for required in 'open init Client MailGW'.split():
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180 if not hasattr(tracker, required):
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181 raise TrackerError, \
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182 'Required tracker attribute "%s" missing'%required
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183
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184 # load and apply the config
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185 tracker.config = configuration.CoreConfig(tracker_home)
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186 # FIXME! dbinit does "import config".
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187 # What would be the upgrade plan for existing trackers?
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188 tracker.dbinit.config = tracker.config
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189
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190 tracker.optimize = optimize
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191 tracker.templates = templating.Templates(tracker.config["TEMPLATES"])
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192 if optimize:
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193 tracker.templates.precompileTemplates()
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194
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195 return tracker
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196
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197 OldStyleTrackers = OldStyleTrackers()
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198 def open(tracker_home, optimize=0):
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199 if os.path.exists(os.path.join(tracker_home, 'dbinit.py')):
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200 # user should upgrade...
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201 return OldStyleTrackers.open(tracker_home, optimize=optimize)
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202
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203 return Tracker(tracker_home, optimize=optimize)
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204
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205 # vim: set filetype=python sts=4 sw=4 et si :
Roundup Issue Tracker: http://roundup-tracker.org/