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annotate roundup/instance.py @ 5937:5d0873a4de4a

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fix rate limit headers - were ints/floats need to be strings Running under gunicorn rest requests were crashing. Not all of the values for the rate limit headers were strings. Some were numbers. This caused the header generation for wsgi to fail. Now the values are all strings.
author John Rouillard <rouilj@ieee.org>
date Sun, 20 Oct 2019 20:56:56 -0400
parents 5258e89e896a
children 8ccb41b477d1
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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
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19 """Top-level tracker interface.
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20
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21 Open a tracker with:
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22
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23 >>> from roundup import instance
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24 >>> db = instance.open('path to tracker home')
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25
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26 The "db" handle you get back is the tracker's hyperdb which has the interface
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27 described in `roundup.hyperdb.Database`.
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28 """
2005
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29 __docformat__ = 'restructuredtext'
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30
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31 try:
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32 import builtins
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33 except ImportError:
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34 import __builtin__ as builtins
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35
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36 try:
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37 from collections.abc import Callable
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38 except ImportError:
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39 from collections import Callable
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40
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41 import os
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42 import sys
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43 import warnings
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44
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45 from roundup import configuration, mailgw
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46 from roundup import hyperdb, backends, actions
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47 from roundup.cgi import client, templating
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48 from roundup.cgi import actions as cgi_actions
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49
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50 class Tracker:
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51 def __init__(self, tracker_home, optimize=0):
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52 """New-style tracker instance constructor
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53
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54 Parameters:
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55 tracker_home:
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56 tracker home directory
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57 optimize:
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58 if set, precompile html templates
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59
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60 """
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61 self.tracker_home = tracker_home
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62 self.optimize = optimize
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63 # if set, call schema_hook after executing schema.py will get
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64 # same variables (in particular db) as schema.py main purpose is
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65 # for regression tests
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66 self.schema_hook = None
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67 self.config = configuration.CoreConfig(tracker_home)
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68 self.actions = {}
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69 self.cgi_actions = {}
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70 self.templating_utils = {}
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72 libdir = os.path.join(self.tracker_home, 'lib')
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73 self.libdir = os.path.isdir(libdir) and libdir or ''
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74
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75 self.load_interfaces()
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76 self.templates = templating.get_loader(self.config["TEMPLATES"],
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77 self.config["TEMPLATE_ENGINE"])
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78
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79 rdbms_backend = self.config.RDBMS_BACKEND
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80
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81 # TODO: Remove in v1.7
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82 # Provide some backwards compatability for existing Roundup instances
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83 # that still define the backend type in 'db/backend_name' and warn the
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84 # users they need to update their config.ini
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85 if rdbms_backend == '':
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86 filename = os.path.join(self.config.DATABASE, 'backend_name')
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87 msg = """\n
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88 The 'backend_name' file is no longer used to configure the database backend
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89 used for the tracker. Please read 'doc/upgrading.txt' to find out how to
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90 update your config.ini
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91 """
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92 try:
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93 with open(filename) as backend_file:
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94 rdbms_backend = backend_file.readline().strip()
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95
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96 with warnings.catch_warnings():
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97 warnings.simplefilter("once", DeprecationWarning)
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98 warnings.warn(msg, DeprecationWarning, stacklevel=2)
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99 except IOError:
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100 pass
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101
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102 self.backend = backends.get_backend(rdbms_backend)
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103
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104 if self.optimize:
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105 self.templates.precompile()
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106 # initialize tracker extensions
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107 for extension in self.get_extensions('extensions'):
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108 extension(self)
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109 # load database schema
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110 self.schema = self._compile('schema.py')
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111 # load database detectors
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112 self.detectors = self.get_extensions('detectors')
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113 # db_open is set to True after first open()
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114 self.db_open = 0
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115
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116 def open(self, name=None):
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117 # load the database schema
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118 # we cannot skip this part even if self.optimize is set
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119 # because the schema has security settings that must be
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120 # applied to each database instance
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121 backend = self.backend
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122 env = {
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123 'Class': backend.Class,
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124 'FileClass': backend.FileClass,
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125 'IssueClass': backend.IssueClass,
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126 'String': hyperdb.String,
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127 'Password': hyperdb.Password,
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128 'Date': hyperdb.Date,
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129 'Link': hyperdb.Link,
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130 'Multilink': hyperdb.Multilink,
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131 'Interval': hyperdb.Interval,
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132 'Boolean': hyperdb.Boolean,
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133 'Number': hyperdb.Number,
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134 'Integer': hyperdb.Integer,
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135 'db': backend.Database(self.config, name)
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136 }
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137
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138 if self.optimize:
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139 # execute preloaded schema object
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140 self._exec(self.schema, env)
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141 if isinstance(self.schema_hook, Callable):
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142 self.schema_hook(**env)
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143 # use preloaded detectors
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144 detectors = self.detectors
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145 else:
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146 # execute the schema file
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147 self._execfile('schema.py', env)
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148 if isinstance(self.schema_hook, Callable):
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149 self.schema_hook(**env)
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150 # reload extensions and detectors
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151 for extension in self.get_extensions('extensions'):
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152 extension(self)
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153 detectors = self.get_extensions('detectors')
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154 db = env['db']
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155 db.tx_Source = None
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156
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157 # apply the detectors
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158 for detector in detectors:
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159 detector(db)
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160 # if we are running in debug mode
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161 # or this is the first time the database is opened,
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162 # do database upgrade checks
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163 if not (self.optimize and self.db_open):
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164 # As a consistency check, ensure that every link property is
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165 # pointing at a defined class. Otherwise, the schema is
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166 # internally inconsistent. This is an important safety
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167 # measure as it protects against an accidental schema change
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168 # dropping a table while there are still links to the table;
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169 # once the table has been dropped, there is no way to get it
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170 # back, so it is important to drop it only if we are as sure
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171 # as possible that it is no longer needed.
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172 classes = db.getclasses()
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173 for classname in classes:
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174 cl = db.getclass(classname)
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175 for propname, prop in cl.getprops().items():
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176 if not isinstance(prop, (hyperdb.Link,
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177 hyperdb.Multilink)):
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178 continue
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179 linkto = prop.classname
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180 if linkto not in classes:
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181 raise ValueError("property %s.%s links to non-existent class %s"
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182 % (classname, propname, linkto))
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183
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184 db.post_init()
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185 self.db_open = 1
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186 return db
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187
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188 def load_interfaces(self):
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189 """load interfaces.py (if any), initialize Client and MailGW attrs"""
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190 env = {}
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191 if os.path.isfile(os.path.join(self.tracker_home, 'interfaces.py')):
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192 self._execfile('interfaces.py', env)
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193 self.Client = env.get('Client', client.Client)
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194 self.MailGW = env.get('MailGW', mailgw.MailGW)
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195 self.TemplatingUtils = env.get('TemplatingUtils', templating.TemplatingUtils)
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196
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197 def get_extensions(self, dirname):
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198 """Load python extensions
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199
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200 Parameters:
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201 dirname:
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202 extension directory name relative to tracker home
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203
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204 Return value:
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205 list of init() functions for each extension
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206
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207 """
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208 extensions = []
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209 dirpath = os.path.join(self.tracker_home, dirname)
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210 if os.path.isdir(dirpath):
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211 sys.path.insert(1, dirpath)
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212 for name in os.listdir(dirpath):
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213 if not name.endswith('.py'):
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214 continue
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215 env = {}
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216 self._execfile(os.path.join(dirname, name), env)
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217 extensions.append(env['init'])
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218 sys.path.remove(dirpath)
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219 return extensions
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220
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221 def init(self, adminpw, tx_Source=None):
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222 db = self.open('admin')
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223 db.tx_Source = tx_Source
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224 self._execfile('initial_data.py', {'db': db, 'adminpw': adminpw,
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225 'admin_email': self.config['ADMIN_EMAIL']})
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226 db.commit()
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227 db.close()
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228
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229 def exists(self):
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230 return self.backend.db_exists(self.config)
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231
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232 def nuke(self):
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233 self.backend.db_nuke(self.config)
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234
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235 def _compile(self, fname):
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236 fname = os.path.join(self.tracker_home, fname)
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237 return compile(builtins.open(fname).read(), fname, 'exec')
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238
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239 def _exec(self, obj, env):
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240 if self.libdir:
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241 sys.path.insert(1, self.libdir)
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242 exec(obj, env)
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243 if self.libdir:
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244 sys.path.remove(self.libdir)
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245 return env
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246
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247 def _execfile(self, fname, env):
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248 self._exec(self._compile(fname), env)
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249
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250 def registerAction(self, name, action):
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251
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252 # The logic here is this:
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253 # * if `action` derives from actions.Action,
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254 # it is executable as a generic action.
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255 # * if, moreover, it also derives from cgi.actions.Bridge,
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256 # it may in addition be called via CGI
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257 # * in all other cases we register it as a CGI action, without
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258 # any check (for backward compatibility).
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259 if issubclass(action, actions.Action):
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260 self.actions[name] = action
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261 if issubclass(action, cgi_actions.Bridge):
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262 self.cgi_actions[name] = action
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263 else:
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264 self.cgi_actions[name] = action
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265
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266 def registerUtil(self, name, function):
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267 self.templating_utils[name] = function
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268
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269 class TrackerError(BaseException):
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270 pass
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271
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272
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273 class OldStyleTrackers:
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274 def __init__(self):
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275 self.number = 0
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276 self.trackers = {}
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277
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278 def open(self, tracker_home, optimize=0):
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279 """Open the tracker.
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280
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281 Parameters:
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282 tracker_home:
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283 tracker home directory
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284 optimize:
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285 if set, precompile html templates
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286
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287 Raise ValueError if the tracker home doesn't exist.
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288
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289 """
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290 import imp
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291 # sanity check existence of tracker home
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292 if not os.path.exists(tracker_home):
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293 raise ValueError('no such directory: "%s"'%tracker_home)
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294
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295 # sanity check tracker home contents
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296 for reqd in 'config dbinit select_db interfaces'.split():
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297 if not os.path.exists(os.path.join(tracker_home, '%s.py'%reqd)):
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298 raise TrackerError('File "%s.py" missing from tracker '\
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299 'home "%s"'%(reqd, tracker_home))
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300
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301 if tracker_home in self.trackers:
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302 return imp.load_package(self.trackers[tracker_home],
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303 tracker_home)
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304 # register all available backend modules
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305 backends.list_backends()
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306 self.number = self.number + 1
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307 modname = '_roundup_tracker_%s'%self.number
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308 self.trackers[tracker_home] = modname
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309
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310 # load the tracker
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311 tracker = imp.load_package(modname, tracker_home)
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312
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313 # ensure the tracker has all the required bits
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314 for required in 'open init Client MailGW'.split():
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315 if not hasattr(tracker, required):
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316 raise TrackerError('Required tracker attribute "%s" missing'%required)
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317
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318 # load and apply the config
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319 tracker.config = configuration.CoreConfig(tracker_home)
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320 tracker.dbinit.config = tracker.config
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321
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322 tracker.optimize = optimize
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323 tracker.templates = templating.get_loader(tracker.config["TEMPLATES"])
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324 if optimize:
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325 tracker.templates.precompile()
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326
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327 return tracker
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328
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329 OldStyleTrackers = OldStyleTrackers()
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330 def open(tracker_home, optimize=0):
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331 if os.path.exists(os.path.join(tracker_home, 'dbinit.py')):
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332 # user should upgrade...
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333 return OldStyleTrackers.open(tracker_home, optimize=optimize)
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334
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335 return Tracker(tracker_home, optimize=optimize)
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336
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337 # vim: set filetype=python sts=4 sw=4 et si :
Roundup Issue Tracker: http://roundup-tracker.org/