annotate MoinMoin/app.py @ 852:5ad4ae0b1e09 storage-ng

lots of fixes / adaptions for storage-ng code
author Thomas Waldmann <tw AT waldmann-edv DOT de>
date Sat, 24 Sep 2011 01:22:29 +0200
parents 7f0a56769cbe
children c9a78e5a58c4
rev   line source
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1 # Copyright: 2000-2006 by Juergen Hermann <jh@web.de>
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2 # Copyright: 2002-2011 MoinMoin:ThomasWaldmann
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3 # Copyright: 2008 MoinMoin:FlorianKrupicka
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4 # Copyright: 2010 MoinMoin:DiogenesAugusto
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5 # License: GNU GPL v2 (or any later version), see LICENSE.txt for details.
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6
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7 """
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8 MoinMoin - wsgi application setup and related code
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9
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10 Use create_app(config) to create the WSGI application (using Flask).
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11 """
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12
134
901bd4e1861e import absolute_import, division from __future__ in every module
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13 from __future__ import absolute_import, division
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14
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15 import os
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16
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17 # do this early, but not in MoinMoin/__init__.py because we need to be able to
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18 # "import MoinMoin" from setup.py even before flask, werkzeug, ... is installed.
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19 from MoinMoin.util import monkeypatch
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20
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21 from flask import Flask, request, session
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22 from flask import current_app as app
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23 from flask import g as flaskg
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24
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25 from flaskext.cache import Cache
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26 from flaskext.themes import setup_themes
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27
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28 from werkzeug.exceptions import HTTPException
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29
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30 from jinja2 import ChoiceLoader, FileSystemLoader
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31
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32 from MoinMoin import log
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33 logging = log.getLogger(__name__)
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34
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35 from MoinMoin.i18n import i18n_init
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36 from MoinMoin.i18n import _, L_, N_
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37
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38 from MoinMoin.themes import setup_jinja_env, themed_error
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39
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40 from MoinMoin.util.clock import Clock
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41
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42
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43 def create_app(config=None):
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44 """
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45 simple wrapper around create_app_ext() for flask-script
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46 """
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47 return create_app_ext(flask_config_file=config)
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48
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49
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50 def create_app_ext(flask_config_file=None, flask_config_dict=None,
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51 moin_config_class=None, warn_default=True, **kwargs
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52 ):
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53 """
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54 Factory for moin wsgi apps
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55
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56 :param flask_config_file: a flask config file name (may have a MOINCFG class),
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57 if not given, a config pointed to by MOINCFG env var
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58 will be loaded (if possible).
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59 :param flask_config_dict: a dict used to update flask config (applied after
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60 flask_config_file was loaded [if given])
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61 :param moin_config_class: if you give this, it'll be instantiated as app.cfg,
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62 otherwise it'll use MOINCFG from flask config. If that
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63 also is not there, it'll use the DefaultConfig built
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64 into MoinMoin.
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65 :param warn_default: emit a warning if moin falls back to its builtin default
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66 config (maybe user forgot to specify MOINCFG?)
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67 :param kwargs: if you give additional keyword args, the keys/values will get patched
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68 into the moin configuration class (before its instance is created)
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69 """
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70 clock = Clock()
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71 clock.start('create_app total')
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72 app = Flask('MoinMoin')
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73 clock.start('create_app load config')
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74 if flask_config_file:
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75 app.config.from_pyfile(flask_config_file)
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76 else:
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77 if not app.config.from_envvar('MOINCFG', silent=True):
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78 # no MOINCFG env variable set, try stuff in cwd:
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79 from os import path
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80 flask_config_file = path.abspath('wikiconfig_local.py')
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81 if not path.exists(flask_config_file):
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82 flask_config_file = path.abspath('wikiconfig.py')
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83 if not path.exists(flask_config_file):
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84 flask_config_file = None
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85 if flask_config_file:
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86 app.config.from_pyfile(flask_config_file)
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87 if flask_config_dict:
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88 app.config.update(flask_config_dict)
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89 Config = moin_config_class
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90 if not Config:
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91 Config = app.config.get('MOINCFG')
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92 if not Config:
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93 if warn_default:
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94 logging.warning("using builtin default configuration")
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95 from MoinMoin.config.default import DefaultConfig as Config
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96 for key, value in kwargs.iteritems():
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97 setattr(Config, key, value)
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98 if Config.secrets is None:
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99 # reuse the secret configured for flask (which is required for sessions)
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100 Config.secrets = app.config.get('SECRET_KEY')
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101 app.cfg = Config()
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102 clock.stop('create_app load config')
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103 clock.start('create_app register')
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104 # register converters
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105 from werkzeug.routing import PathConverter
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106 app.url_map.converters['itemname'] = PathConverter
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107 # register modules, before/after request functions
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108 from MoinMoin.apps.frontend import frontend
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109 frontend.before_request(before_wiki)
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110 frontend.teardown_request(teardown_wiki)
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111 app.register_blueprint(frontend)
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112 from MoinMoin.apps.admin import admin
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113 admin.before_request(before_wiki)
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114 admin.teardown_request(teardown_wiki)
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115 app.register_blueprint(admin, url_prefix='/+admin')
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116 from MoinMoin.apps.feed import feed
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117 feed.before_request(before_wiki)
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118 feed.teardown_request(teardown_wiki)
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119 app.register_blueprint(feed, url_prefix='/+feed')
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120 from MoinMoin.apps.misc import misc
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121 misc.before_request(before_wiki)
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122 misc.teardown_request(teardown_wiki)
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123 app.register_blueprint(misc, url_prefix='/+misc')
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124 from MoinMoin.apps.serve import serve
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125 app.register_blueprint(serve, url_prefix='/+serve')
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126 clock.stop('create_app register')
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127 clock.start('create_app flask-cache')
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128 cache = Cache()
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129 cache.init_app(app)
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130 app.cache = cache
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131 clock.stop('create_app flask-cache')
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132 # init storage
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133 clock.start('create_app init backends')
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134 init_backends(app)
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135 clock.stop('create_app init backends')
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136 clock.start('create_app flask-babel')
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137 i18n_init(app)
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138 clock.stop('create_app flask-babel')
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139 # configure templates
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140 clock.start('create_app flask-themes')
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141 setup_themes(app)
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142 if app.cfg.template_dirs:
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143 app.jinja_env.loader = ChoiceLoader([
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144 FileSystemLoader(app.cfg.template_dirs),
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145 app.jinja_env.loader,
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146 ])
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147 app.register_error_handler(403, themed_error)
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148 clock.stop('create_app flask-themes')
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149 clock.stop('create_app total')
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150 del clock
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151 return app
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152
177
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153 def destroy_app(app):
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154 deinit_backends(app)
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155
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156
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157 from MoinMoin.storage.middleware import protecting, indexing, routing
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158 from MoinMoin import auth, config, user
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159
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160
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161 def init_backends(app):
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162 """
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163 initialize the backends
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164 """
0
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165 # A ns_mapping consists of several lines, where each line is made up like this:
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166 # mountpoint, unprotected backend
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167 # Just initialize with unprotected backends.
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168 app.router = routing.Backend(app.cfg.namespace_mapping)
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169 if app.cfg.create_storage:
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170 app.router.create()
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171 app.router.open()
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172 app.storage = indexing.IndexingMiddleware(app.cfg.index_dir, app.router, wiki_name=app.cfg.interwikiname) # XXX give user name etc.
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173 if app.cfg.create_storage:
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174 app.storage.create()
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175 app.storage.open()
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176
177
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177 def deinit_backends(app):
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178 app.storage.close()
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179 app.router.close()
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180 if app.cfg.destroy_storage:
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181 app.storage.destroy()
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182 app.router.destroy()
177
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183
0
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184
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185 def setup_user():
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186 """
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187 Try to retrieve a valid user object from the request, be it
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188 either through the session or through a login.
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189 """
0
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190 # init some stuff for auth processing:
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191 flaskg._login_multistage = None
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192 flaskg._login_multistage_name = None
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193 flaskg._login_messages = []
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194
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195 # first try setting up from session
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196 userobj = auth.setup_from_session()
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197
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198 # then handle login/logout forms
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199 form = request.values.to_dict()
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200 if 'login_submit' in form:
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201 # this is a real form, submitted by POST
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202 userobj = auth.handle_login(userobj, **form)
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203 elif 'logout_submit' in form:
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204 # currently just a GET link
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205 userobj = auth.handle_logout(userobj)
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206 else:
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207 userobj = auth.handle_request(userobj)
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208
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209 # if we still have no user obj, create a dummy:
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210 if not userobj:
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211 userobj = user.User(auth_method='invalid')
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212 # if we have a valid user we store it in the session
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213 if userobj.valid:
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214 # TODO: auth_trusted should be set by the auth method (auth class
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215 # could have a param where the admin could tell whether he wants to
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216 # trust it)
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217 userobj.auth_trusted = userobj.auth_method in app.cfg.auth_methods_trusted
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218 session['user.id'] = userobj.uuid
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219 session['user.auth_method'] = userobj.auth_method
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220 session['user.auth_attribs'] = userobj.auth_attribs
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221 return userobj
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222
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223
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224 def before_wiki():
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225 """
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226 Setup environment for wiki requests, start timers.
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227 """
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228 logging.debug("running before_wiki")
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229 flaskg.clock = Clock()
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230 flaskg.clock.start('total')
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231 flaskg.clock.start('init')
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232 try:
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233 flaskg.unprotected_storage = app.storage
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234
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235 flaskg.user = setup_user()
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236 flaskg.storage = protecting.ProtectingMiddleware(app.storage, flaskg.user, app.cfg.acl_mapping)
0
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237
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238 flaskg.dicts = app.cfg.dicts()
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239 flaskg.groups = app.cfg.groups()
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240
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241 flaskg.content_lang = app.cfg.language_default
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242 flaskg.current_lang = app.cfg.language_default
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243
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244 setup_jinja_env()
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245 finally:
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246 flaskg.clock.stop('init')
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247
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248 # if return value is not None, it is the final response
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249
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250
288
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251 def teardown_wiki(response):
0
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252 """
288
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253 Teardown environment of wiki requests, stop timers.
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254 """
288
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255 logging.debug("running teardown_wiki")
0
5568cf133caf create moin/2.0 repo, drop all history (see notes below)
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256 try:
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257 flaskg.clock.stop('total')
5568cf133caf create moin/2.0 repo, drop all history (see notes below)
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258 del flaskg.clock
5568cf133caf create moin/2.0 repo, drop all history (see notes below)
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259 except AttributeError:
288
e6f585ac9766 use teardown_request (teardown_wiki) instead of after_request (after_wiki), because it is called when an exception happened
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260 # can happen if teardown_wiki() is called twice, e.g. by unit tests.
0
5568cf133caf create moin/2.0 repo, drop all history (see notes below)
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261 pass
5568cf133caf create moin/2.0 repo, drop all history (see notes below)
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262 return response
5568cf133caf create moin/2.0 repo, drop all history (see notes below)
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263