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annotate rhodecode/lib/middleware/simplegit.py @ 1237:f7bb54f8c20f

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fixed archive names, added setup command to contributing docs.
author Marcin Kuzminski <marcin@python-works.com>
date Sat, 09 Apr 2011 20:15:18 +0200
parents a3b2b4b4e440
children bf263968da47
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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 modify
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7 # it under the terms of the GNU General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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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, see <http://www.gnu.org/licenses/>.
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18 """
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19 Created on 2010-04-28
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20
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21 @author: marcink
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22 SimpleGit middleware for handling git protocol request (push/clone etc.)
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23 It's implemented with basic auth function
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24 """
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25
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26 from dulwich import server as dulserver
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27
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28 class SimpleGitUploadPackHandler(dulserver.UploadPackHandler):
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29
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30 def handle(self):
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31 write = lambda x: self.proto.write_sideband(1, x)
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32
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33 graph_walker = dulserver.ProtocolGraphWalker(self, self.repo.object_store,
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34 self.repo.get_peeled)
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35 objects_iter = self.repo.fetch_objects(
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36 graph_walker.determine_wants, graph_walker, self.progress,
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37 get_tagged=self.get_tagged)
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38
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39 # Do they want any objects?
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40 if len(objects_iter) == 0:
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41 return
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42
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43 self.progress("counting objects: %d, done.\n" % len(objects_iter))
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44 dulserver.write_pack_data(dulserver.ProtocolFile(None, write), objects_iter,
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45 len(objects_iter))
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46 messages = []
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47 messages.append('thank you for using rhodecode')
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48
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49 for msg in messages:
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50 self.progress(msg + "\n")
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51 # we are done
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52 self.proto.write("0000")
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53
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54 dulserver.DEFAULT_HANDLERS = {
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55 'git-upload-pack': SimpleGitUploadPackHandler,
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56 'git-receive-pack': dulserver.ReceivePackHandler,
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57 }
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58
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59 from dulwich.repo import Repo
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60 from dulwich.web import HTTPGitApplication
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61 from paste.auth.basic import AuthBasicAuthenticator
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62 from paste.httpheaders import REMOTE_USER, AUTH_TYPE
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63 from rhodecode.lib.auth import authfunc, HasPermissionAnyMiddleware
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64 from rhodecode.lib.utils import invalidate_cache, check_repo_fast
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65 from rhodecode.model.user import UserModel
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66 from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError
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67 import logging
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68 import os
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69 import traceback
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70
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71 log = logging.getLogger(__name__)
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72
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73 def is_git(environ):
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74 """
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75 Returns True if request's target is git server. ``HTTP_USER_AGENT`` would
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76 then have git client version given.
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77
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78 :param environ:
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79 """
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80 http_user_agent = environ.get('HTTP_USER_AGENT')
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81 if http_user_agent and http_user_agent.startswith('git'):
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82 return True
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83 return False
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84
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85 class SimpleGit(object):
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86
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87 def __init__(self, application, config):
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88 self.application = application
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89 self.config = config
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90 #authenticate this git request using
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91 self.authenticate = AuthBasicAuthenticator('', authfunc)
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92 self.ipaddr = '0.0.0.0'
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93 self.repository = None
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94 self.username = None
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95 self.action = None
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96
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97 def __call__(self, environ, start_response):
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98 if not is_git(environ):
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99 return self.application(environ, start_response)
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100
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101 proxy_key = 'HTTP_X_REAL_IP'
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102 def_key = 'REMOTE_ADDR'
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103 self.ipaddr = environ.get(proxy_key, environ.get(def_key, '0.0.0.0'))
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104
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105 #===================================================================
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106 # AUTHENTICATE THIS GIT REQUEST
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107 #===================================================================
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108 username = REMOTE_USER(environ)
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109 if not username:
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110 self.authenticate.realm = self.config['rhodecode_realm']
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111 result = self.authenticate(environ)
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112 if isinstance(result, str):
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113 AUTH_TYPE.update(environ, 'basic')
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114 REMOTE_USER.update(environ, result)
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115 else:
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116 return result.wsgi_application(environ, start_response)
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117
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118 #=======================================================================
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119 # GET REPOSITORY
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120 #=======================================================================
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121 try:
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122 repo_name = '/'.join(environ['PATH_INFO'].split('/')[1:])
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123 if repo_name.endswith('/'):
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124 repo_name = repo_name.rstrip('/')
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125 self.repository = repo_name
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126 except:
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127 log.error(traceback.format_exc())
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128 return HTTPInternalServerError()(environ, start_response)
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129
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130 #===================================================================
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131 # CHECK PERMISSIONS FOR THIS REQUEST
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132 #===================================================================
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133 self.action = self.__get_action(environ)
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134 if self.action:
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135 username = self.__get_environ_user(environ)
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136 try:
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137 user = self.__get_user(username)
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138 self.username = user.username
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139 except:
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140 log.error(traceback.format_exc())
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141 return HTTPInternalServerError()(environ, start_response)
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142
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143 #check permissions for this repository
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144 if self.action == 'push':
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145 if not HasPermissionAnyMiddleware('repository.write',
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146 'repository.admin')\
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147 (user, repo_name):
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148 return HTTPForbidden()(environ, start_response)
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149
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150 else:
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151 #any other action need at least read permission
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152 if not HasPermissionAnyMiddleware('repository.read',
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153 'repository.write',
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154 'repository.admin')\
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155 (user, repo_name):
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156 return HTTPForbidden()(environ, start_response)
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157
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158 self.extras = {'ip':self.ipaddr,
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159 'username':self.username,
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160 'action':self.action,
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161 'repository':self.repository}
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162
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163 #===================================================================
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164 # GIT REQUEST HANDLING
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165 #===================================================================
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166 self.basepath = self.config['base_path']
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167 self.repo_path = os.path.join(self.basepath, self.repo_name)
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168 #quick check if that dir exists...
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169 if check_repo_fast(self.repo_name, self.basepath):
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170 return HTTPNotFound()(environ, start_response)
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171 try:
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172 app = self.__make_app()
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173 except:
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174 log.error(traceback.format_exc())
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175 return HTTPInternalServerError()(environ, start_response)
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176
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177 #invalidate cache on push
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178 if self.action == 'push':
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179 self.__invalidate_cache(self.repo_name)
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180 messages = []
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181 messages.append('thank you for using rhodecode')
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182 return app(environ, start_response)
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183 else:
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184 return app(environ, start_response)
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185
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186
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187 def __make_app(self):
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188 backend = dulserver.DictBackend({'/' + self.repo_name: Repo(self.repo_path)})
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189 gitserve = HTTPGitApplication(backend)
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190
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191 return gitserve
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192
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193 def __get_environ_user(self, environ):
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194 return environ.get('REMOTE_USER')
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195
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196 def __get_user(self, username):
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197 return UserModel().get_by_username(username, cache=True)
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198
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199 def __get_action(self, environ):
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200 """
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201 Maps git request commands into a pull or push command.
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202 :param environ:
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203 """
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204 service = environ['QUERY_STRING'].split('=')
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205 if len(service) > 1:
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206 service_cmd = service[1]
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207 mapping = {'git-receive-pack': 'push',
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208 'git-upload-pack': 'pull',
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209 }
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210
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211 return mapping.get(service_cmd, service_cmd if service_cmd else 'other')
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212 else:
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213 return 'other'
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214
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215 def __invalidate_cache(self, repo_name):
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216 """we know that some change was made to repositories and we should
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217 invalidate the cache to see the changes right away but only for
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218 push requests"""
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219 invalidate_cache('get_repo_cached_%s' % repo_name)