Mercurial > kallithea
annotate rhodecode/lib/middleware/simplehg.py @ 858:508b3976345e beta
bumped development version
author | Marcin Kuzminski <marcin@python-works.com> |
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date | Sat, 18 Dec 2010 15:03:18 +0100 |
parents | 01be209b9828 |
children | 9c4851dce8e6 136af52f374b |
rev | line source |
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178 | 1 #!/usr/bin/env python |
2 # encoding: utf-8 | |
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3 # middleware to handle mercurial 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 SimpleHG middleware for handling mercurial 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 from mercurial.error import RepoError |
111 | 28 from mercurial.hgweb import hgweb |
29 from mercurial.hgweb.request import wsgiapplication | |
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30 from paste.auth.basic import AuthBasicAuthenticator |
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31 from paste.httpheaders import REMOTE_USER, AUTH_TYPE |
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32 from rhodecode.lib.auth import authfunc, HasPermissionAnyMiddleware |
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33 from rhodecode.lib.utils import make_ui, invalidate_cache, \ |
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34 check_repo_fast, ui_sections |
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35 from rhodecode.model.user import UserModel |
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36 from webob.exc import HTTPNotFound, HTTPForbidden, HTTPInternalServerError |
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37 import logging |
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38 import os |
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39 import traceback |
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40 |
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41 log = logging.getLogger(__name__) |
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42 |
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43 def is_mercurial(environ): |
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44 """ |
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45 Returns True if request's target is mercurial server - header |
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46 ``HTTP_ACCEPT`` of such request would start with ``application/mercurial``. |
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47 """ |
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48 http_accept = environ.get('HTTP_ACCEPT') |
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49 if http_accept and http_accept.startswith('application/mercurial'): |
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50 return True |
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51 return False |
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52 |
111 | 53 class SimpleHg(object): |
54 | |
55 def __init__(self, application, config): | |
56 self.application = application | |
57 self.config = config | |
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58 #authenticate this mercurial request using authfunc |
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59 self.authenticate = AuthBasicAuthenticator('', authfunc) |
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60 self.ipaddr = '0.0.0.0' |
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61 self.repository = None |
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62 self.username = None |
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63 self.action = None |
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64 |
111 | 65 def __call__(self, environ, start_response): |
66 if not is_mercurial(environ): | |
67 return self.application(environ, start_response) | |
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68 |
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69 proxy_key = 'HTTP_X_REAL_IP' |
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70 def_key = 'REMOTE_ADDR' |
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71 self.ipaddr = environ.get(proxy_key, environ.get(def_key, '0.0.0.0')) |
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72 |
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73 #=================================================================== |
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74 # AUTHENTICATE THIS MERCURIAL REQUEST |
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75 #=================================================================== |
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76 username = REMOTE_USER(environ) |
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77 |
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78 if not username: |
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79 self.authenticate.realm = self.config['rhodecode_realm'] |
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80 result = self.authenticate(environ) |
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81 if isinstance(result, str): |
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82 AUTH_TYPE.update(environ, 'basic') |
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83 REMOTE_USER.update(environ, result) |
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84 else: |
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85 return result.wsgi_application(environ, start_response) |
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86 |
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87 #======================================================================= |
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88 # GET REPOSITORY |
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89 #======================================================================= |
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90 try: |
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91 repo_name = '/'.join(environ['PATH_INFO'].split('/')[1:]) |
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92 if repo_name.endswith('/'): |
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93 repo_name = repo_name.rstrip('/') |
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94 self.repository = repo_name |
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95 except: |
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96 log.error(traceback.format_exc()) |
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97 return HTTPInternalServerError()(environ, start_response) |
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98 |
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99 #=================================================================== |
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100 # CHECK PERMISSIONS FOR THIS REQUEST |
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101 #=================================================================== |
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102 self.action = self.__get_action(environ) |
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103 if self.action: |
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104 username = self.__get_environ_user(environ) |
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105 try: |
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106 user = self.__get_user(username) |
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107 self.username = user.username |
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108 except: |
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109 log.error(traceback.format_exc()) |
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110 return HTTPInternalServerError()(environ, start_response) |
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111 |
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112 #check permissions for this repository |
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113 if self.action == 'push': |
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114 if not HasPermissionAnyMiddleware('repository.write', |
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115 'repository.admin')\ |
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116 (user, repo_name): |
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117 return HTTPForbidden()(environ, start_response) |
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118 |
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119 else: |
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120 #any other action need at least read permission |
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121 if not HasPermissionAnyMiddleware('repository.read', |
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122 'repository.write', |
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123 'repository.admin')\ |
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124 (user, repo_name): |
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125 return HTTPForbidden()(environ, start_response) |
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126 |
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127 self.extras = {'ip':self.ipaddr, |
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128 'username':self.username, |
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129 'action':self.action, |
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130 'repository':self.repository} |
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131 |
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132 #=================================================================== |
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133 # MERCURIAL REQUEST HANDLING |
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134 #=================================================================== |
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135 environ['PATH_INFO'] = '/'#since we wrap into hgweb, reset the path |
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136 self.baseui = make_ui('db') |
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137 self.basepath = self.config['base_path'] |
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138 self.repo_path = os.path.join(self.basepath, repo_name) |
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139 |
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140 #quick check if that dir exists... |
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141 if check_repo_fast(repo_name, self.basepath): |
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142 return HTTPNotFound()(environ, start_response) |
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143 try: |
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144 app = wsgiapplication(self.__make_app) |
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145 except RepoError, e: |
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146 if str(e).find('not found') != -1: |
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147 return HTTPNotFound()(environ, start_response) |
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148 except Exception: |
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149 log.error(traceback.format_exc()) |
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150 return HTTPInternalServerError()(environ, start_response) |
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151 |
343
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152 #invalidate cache on push |
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153 if self.action == 'push': |
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154 self.__invalidate_cache(repo_name) |
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155 |
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156 return app(environ, start_response) |
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157 |
111 | 158 |
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159 def __make_app(self): |
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160 hgserve = hgweb(str(self.repo_path), baseui=self.baseui) |
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161 return self.__load_web_settings(hgserve, self.extras) |
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162 |
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163 def __get_environ_user(self, environ): |
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164 return environ.get('REMOTE_USER') |
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165 |
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166 def __get_user(self, username): |
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167 return UserModel().get_by_username(username, cache=True) |
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168 |
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169 def __get_action(self, environ): |
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170 """ |
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171 Maps mercurial request commands into a clone,pull or push command. |
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172 This should always return a valid command string |
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173 :param environ: |
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174 """ |
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175 mapping = {'changegroup': 'pull', |
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176 'changegroupsubset': 'pull', |
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177 'stream_out': 'pull', |
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178 'listkeys': 'pull', |
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179 'unbundle': 'push', |
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180 'pushkey': 'push', } |
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181 for qry in environ['QUERY_STRING'].split('&'): |
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182 if qry.startswith('cmd'): |
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183 cmd = qry.split('=')[-1] |
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184 if mapping.has_key(cmd): |
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185 return mapping[cmd] |
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186 else: |
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187 return cmd |
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188 |
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189 def __invalidate_cache(self, repo_name): |
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190 """we know that some change was made to repositories and we should |
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191 invalidate the cache to see the changes right away but only for |
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192 push requests""" |
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193 invalidate_cache('get_repo_cached_%s' % repo_name) |
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194 |
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195 |
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196 def __load_web_settings(self, hgserve, extras={}): |
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197 #set the global ui for hgserve instance passed |
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198 hgserve.repo.ui = self.baseui |
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199 |
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200 hgrc = os.path.join(self.repo_path, '.hg', 'hgrc') |
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201 |
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202 #inject some additional parameters that will be available in ui |
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203 #for hooks |
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204 for k, v in extras.items(): |
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205 hgserve.repo.ui.setconfig('rhodecode_extras', k, v) |
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206 |
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207 repoui = make_ui('file', hgrc, False) |
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208 |
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209 if repoui: |
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210 #overwrite our ui instance with the section from hgrc file |
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211 for section in ui_sections: |
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212 for k, v in repoui.configitems(section): |
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213 hgserve.repo.ui.setconfig(section, k, v) |
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214 |
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215 return hgserve |
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216 |
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217 |
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218 |
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219 |
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220 |
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221 |
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222 |
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223 |
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224 |
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225 |
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229 |