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annotate rhodecode/lib/middleware/simplegit.py @ 756:01be209b9828 beta

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project refactoring, cleaned up lib.utils from rarly used functions, and place them in proper controllers moves is_git is_hg functions to the middleware classes
author Marcin Kuzminski <marcin@python-works.com>
date Thu, 25 Nov 2010 01:57:37 +0100
parents 070f32743632
children 9c4851dce8e6 a3b2b4b4e440
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1 #!/usr/bin/env python
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2 # encoding: utf-8
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3 # middleware to handle git api calls
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4 # Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
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5 #
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6 # This program is free software; you can redistribute it and/or
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7 # modify it under the terms of the GNU General Public License
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8 # as published by the Free Software Foundation; version 2
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9 # of the License or (at your opinion) any later version of the license.
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10 #
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU General Public License for more details.
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15 #
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16 # You should have received a copy of the GNU General Public License
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17 # along with this program; if not, write to the Free Software
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18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 # MA 02110-1301, USA.
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20 """
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21 Created on 2010-04-28
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22
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23 @author: marcink
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24 SimpleGit middleware for handling git protocol request (push/clone etc.)
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25 It's implemented with basic auth function
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26 """
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27
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28 from dulwich import server as dulserver
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29
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30 class SimpleGitUploadPackHandler(dulserver.UploadPackHandler):
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31
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32 def handle(self):
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33 write = lambda x: self.proto.write_sideband(1, x)
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34
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35 graph_walker = dulserver.ProtocolGraphWalker(self, self.repo.object_store,
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36 self.repo.get_peeled)
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37 objects_iter = self.repo.fetch_objects(
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38 graph_walker.determine_wants, graph_walker, self.progress,
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39 get_tagged=self.get_tagged)
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40
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41 # Do they want any objects?
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42 if len(objects_iter) == 0:
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43 return
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44
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45 self.progress("counting objects: %d, done.\n" % len(objects_iter))
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46 dulserver.write_pack_data(dulserver.ProtocolFile(None, write), objects_iter,
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47 len(objects_iter))
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48 messages = []
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49 messages.append('thank you for using rhodecode')
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50
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51 for msg in messages:
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52 self.progress(msg + "\n")
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53 # we are done
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54 self.proto.write("0000")
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55
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56 dulserver.DEFAULT_HANDLERS = {
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57 'git-upload-pack': SimpleGitUploadPackHandler,
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58 'git-receive-pack': dulserver.ReceivePackHandler,
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59 }
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60
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61 from dulwich.repo import Repo
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62 from dulwich.web import HTTPGitApplication
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63 from paste.auth.basic import AuthBasicAuthenticator
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64 from paste.httpheaders import REMOTE_USER, AUTH_TYPE
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65 from rhodecode.lib.auth import authfunc, HasPermissionAnyMiddleware
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66 from rhodecode.lib.utils import invalidate_cache, check_repo_fast
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67 from rhodecode.model.user import UserModel
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68 from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError
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69 import logging
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70 import os
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71 import traceback
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72
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73 log = logging.getLogger(__name__)
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74
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75 def is_git(environ):
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76 """
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77 Returns True if request's target is git server. ``HTTP_USER_AGENT`` would
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78 then have git client version given.
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79
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80 :param environ:
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81 """
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82 http_user_agent = environ.get('HTTP_USER_AGENT')
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83 if http_user_agent and http_user_agent.startswith('git'):
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84 return True
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85 return False
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86
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87 class SimpleGit(object):
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88
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89 def __init__(self, application, config):
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90 self.application = application
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91 self.config = config
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92 #authenticate this git request using
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93 self.authenticate = AuthBasicAuthenticator('', authfunc)
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94 self.ipaddr = '0.0.0.0'
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95 self.repository = None
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96 self.username = None
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97 self.action = None
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98
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99 def __call__(self, environ, start_response):
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100 if not is_git(environ):
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101 return self.application(environ, start_response)
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102
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103 proxy_key = 'HTTP_X_REAL_IP'
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104 def_key = 'REMOTE_ADDR'
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105 self.ipaddr = environ.get(proxy_key, environ.get(def_key, '0.0.0.0'))
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106
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107 #===================================================================
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108 # AUTHENTICATE THIS GIT REQUEST
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109 #===================================================================
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110 username = REMOTE_USER(environ)
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111 if not username:
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112 self.authenticate.realm = self.config['rhodecode_realm']
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113 result = self.authenticate(environ)
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114 if isinstance(result, str):
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115 AUTH_TYPE.update(environ, 'basic')
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116 REMOTE_USER.update(environ, result)
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117 else:
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118 return result.wsgi_application(environ, start_response)
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119
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120 #=======================================================================
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121 # GET REPOSITORY
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122 #=======================================================================
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123 try:
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124 repo_name = '/'.join(environ['PATH_INFO'].split('/')[1:])
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125 if repo_name.endswith('/'):
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126 repo_name = repo_name.rstrip('/')
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127 self.repository = repo_name
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128 except:
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129 log.error(traceback.format_exc())
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130 return HTTPInternalServerError()(environ, start_response)
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131
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132 #===================================================================
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133 # CHECK PERMISSIONS FOR THIS REQUEST
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134 #===================================================================
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135 self.action = self.__get_action(environ)
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136 if self.action:
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137 username = self.__get_environ_user(environ)
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138 try:
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139 user = self.__get_user(username)
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140 self.username = user.username
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141 except:
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142 log.error(traceback.format_exc())
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143 return HTTPInternalServerError()(environ, start_response)
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144
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145 #check permissions for this repository
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146 if self.action == 'push':
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147 if not HasPermissionAnyMiddleware('repository.write',
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148 'repository.admin')\
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149 (user, repo_name):
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150 return HTTPForbidden()(environ, start_response)
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151
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152 else:
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153 #any other action need at least read permission
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154 if not HasPermissionAnyMiddleware('repository.read',
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155 'repository.write',
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156 'repository.admin')\
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157 (user, repo_name):
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158 return HTTPForbidden()(environ, start_response)
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159
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160 self.extras = {'ip':self.ipaddr,
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161 'username':self.username,
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162 'action':self.action,
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163 'repository':self.repository}
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164
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165 #===================================================================
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166 # GIT REQUEST HANDLING
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167 #===================================================================
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168 self.basepath = self.config['base_path']
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169 self.repo_path = os.path.join(self.basepath, self.repo_name)
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170 #quick check if that dir exists...
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171 if check_repo_fast(self.repo_name, self.basepath):
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172 return HTTPNotFound()(environ, start_response)
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173 try:
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174 app = self.__make_app()
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175 except:
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176 log.error(traceback.format_exc())
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177 return HTTPInternalServerError()(environ, start_response)
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178
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179 #invalidate cache on push
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180 if self.action == 'push':
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181 self.__invalidate_cache(self.repo_name)
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182 messages = []
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183 messages.append('thank you for using rhodecode')
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184 return app(environ, start_response)
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185 else:
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186 return app(environ, start_response)
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187
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188
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189 def __make_app(self):
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190 backend = dulserver.DictBackend({'/' + self.repo_name: Repo(self.repo_path)})
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191 gitserve = HTTPGitApplication(backend)
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192
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193 return gitserve
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194
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195 def __get_environ_user(self, environ):
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196 return environ.get('REMOTE_USER')
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197
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198 def __get_user(self, username):
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199 return UserModel().get_by_username(username, cache=True)
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200
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201 def __get_action(self, environ):
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202 """
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203 Maps git request commands into a pull or push command.
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204 :param environ:
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205 """
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206 service = environ['QUERY_STRING'].split('=')
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207 if len(service) > 1:
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208 service_cmd = service[1]
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209 mapping = {'git-receive-pack': 'push',
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210 'git-upload-pack': 'pull',
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211 }
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212
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213 return mapping.get(service_cmd, service_cmd if service_cmd else 'other')
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214 else:
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215 return 'other'
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216
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217 def __invalidate_cache(self, repo_name):
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218 """we know that some change was made to repositories and we should
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219 invalidate the cache to see the changes right away but only for
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220 push requests"""
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221 invalidate_cache('get_repo_cached_%s' % repo_name)