author | Pawel Solyga <Pawel.Solyga@gmail.com> |
Thu, 29 Jan 2009 09:33:50 +0000 | |
changeset 1058 | 6acbbb68f032 |
parent 828 | f5fd65cc3bf3 |
child 1278 | a7766286a7be |
permissions | -rwxr-xr-x |
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#!/usr/bin/env python |
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# |
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# Copyright 2007 Google Inc. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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# |
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"""AppInfo tools |
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Library for working with AppInfo records in memory, store and load from |
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configuration files. |
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""" |
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import re |
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from google.appengine.api import appinfo_errors |
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from google.appengine.api import validation |
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from google.appengine.api import yaml_listener |
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from google.appengine.api import yaml_builder |
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from google.appengine.api import yaml_object |
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_URL_REGEX = r'(?!\^)/|\.|(\(.).*(?!\$).' |
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_FILES_REGEX = r'(?!\^).*(?!\$).' |
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_DELTA_REGEX = r'([1-9][0-9]*)([DdHhMm]|[sS]?)' |
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_EXPIRATION_REGEX = r'\s*(%s)(\s+%s)*\s*' % (_DELTA_REGEX, _DELTA_REGEX) |
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_EXPIRATION_CONVERSIONS = { |
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'd': 60 * 60 * 24, |
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'h': 60 * 60, |
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'm': 60, |
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's': 1, |
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} |
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APP_ID_MAX_LEN = 100 |
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MAJOR_VERSION_ID_MAX_LEN = 100 |
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MAX_URL_MAPS = 100 |
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APPLICATION_RE_STRING = r'(?!-)[a-z\d\-]{1,%d}' % APP_ID_MAX_LEN |
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VERSION_RE_STRING = r'(?!-)[a-z\d\-]{1,%d}' % MAJOR_VERSION_ID_MAX_LEN |
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RUNTIME_RE_STRING = r'[a-z]{1,30}' |
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HANDLER_STATIC_FILES = 'static_files' |
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HANDLER_STATIC_DIR = 'static_dir' |
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HANDLER_SCRIPT = 'script' |
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LOGIN_OPTIONAL = 'optional' |
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LOGIN_REQUIRED = 'required' |
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LOGIN_ADMIN = 'admin' |
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SECURE_HTTP = 'never' |
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SECURE_HTTPS = 'always' |
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SECURE_HTTP_OR_HTTPS = 'optional' |
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DEFAULT_SKIP_FILES = (r"^(.*/)?(" |
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r"(app\.yaml)|" |
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r"(app\.yml)|" |
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r"(index\.yaml)|" |
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r"(index\.yml)|" |
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r"(#.*#)|" |
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r"(.*~)|" |
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r"(.*\.py[co])|" |
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r"(.*/RCS/.*)|" |
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r"(\..*)|" |
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r")$") |
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LOGIN = 'login' |
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SECURE = 'secure' |
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URL = 'url' |
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STATIC_FILES = 'static_files' |
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UPLOAD = 'upload' |
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STATIC_DIR = 'static_dir' |
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MIME_TYPE = 'mime_type' |
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SCRIPT = 'script' |
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EXPIRATION = 'expiration' |
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APPLICATION = 'application' |
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VERSION = 'version' |
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RUNTIME = 'runtime' |
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API_VERSION = 'api_version' |
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HANDLERS = 'handlers' |
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DEFAULT_EXPIRATION = 'default_expiration' |
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SKIP_FILES = 'skip_files' |
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class URLMap(validation.Validated): |
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"""Mapping from URLs to handlers. |
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|
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This class acts like something of a union type. Its purpose is to |
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describe a mapping between a set of URLs and their handlers. What |
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handler type a given instance has is determined by which handler-id |
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attribute is used. |
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Each mapping can have one and only one handler type. Attempting to |
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111 |
use more than one handler-id attribute will cause an UnknownHandlerType |
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112 |
to be raised during validation. Failure to provide any handler-id |
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113 |
attributes will cause MissingHandlerType to be raised during validation. |
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114 |
|
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115 |
The regular expression used by the url field will be used to match against |
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116 |
the entire URL path and query string of the request. This means that |
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117 |
partial maps will not be matched. Specifying a url, say /admin, is the |
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118 |
same as matching against the regular expression '^/admin$'. Don't begin |
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119 |
your matching url with ^ or end them with $. These regular expressions |
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120 |
won't be accepted and will raise ValueError. |
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121 |
|
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122 |
Attributes: |
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123 |
login: Whether or not login is required to access URL. Defaults to |
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124 |
'optional'. |
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125 |
secure: Restriction on the protocol which can be used to serve |
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126 |
this URL/handler (HTTP, HTTPS or either). |
109
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127 |
url: Regular expression used to fully match against the request URLs path. |
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128 |
See Special Cases for using static_dir. |
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129 |
static_files: Handler id attribute that maps URL to the appropriate |
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130 |
file. Can use back regex references to the string matched to url. |
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131 |
upload: Regular expression used by the application configuration |
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132 |
program to know which files are uploaded as blobs. It's very |
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difficult to determine this using just the url and static_files |
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134 |
so this attribute must be included. Required when defining a |
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135 |
static_files mapping. |
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136 |
A matching file name must fully match against the upload regex, similar |
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137 |
to how url is matched against the request path. Do not begin upload |
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138 |
with ^ or end it with $. |
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139 |
static_dir: Handler id that maps the provided url to a sub-directory |
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140 |
within the application directory. See Special Cases. |
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141 |
mime_type: When used with static_files and static_dir the mime-type |
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142 |
of files served from those directories are overridden with this |
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143 |
value. |
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144 |
script: Handler id that maps URLs to scipt handler within the application |
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145 |
directory that will run using CGI. |
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146 |
expiration: When used with static files and directories, the time delta to |
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147 |
use for cache expiration. Has the form '4d 5h 30m 15s', where each letter |
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148 |
signifies days, hours, minutes, and seconds, respectively. The 's' for |
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149 |
seconds may be omitted. Only one amount must be specified, combining |
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150 |
multiple amounts is optional. Example good values: '10', '1d 6h', |
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151 |
'1h 30m', '7d 7d 7d', '5m 30'. |
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152 |
|
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153 |
Special cases: |
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154 |
When defining a static_dir handler, do not use a regular expression |
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155 |
in the url attribute. Both the url and static_dir attributes are |
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156 |
automatically mapped to these equivalents: |
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157 |
|
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158 |
<url>/(.*) |
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159 |
<static_dir>/\1 |
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160 |
|
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161 |
For example: |
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162 |
|
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163 |
url: /images |
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164 |
static_dir: images_folder |
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165 |
|
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|
166 |
Is the same as this static_files declaration: |
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167 |
|
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|
168 |
url: /images/(.*) |
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169 |
static_files: images/\1 |
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170 |
upload: images/(.*) |
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171 |
""" |
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|
172 |
|
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173 |
ATTRIBUTES = { |
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174 |
|
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175 |
URL: validation.Optional(_URL_REGEX), |
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176 |
LOGIN: validation.Options(LOGIN_OPTIONAL, |
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|
177 |
LOGIN_REQUIRED, |
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178 |
LOGIN_ADMIN, |
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|
179 |
default=LOGIN_OPTIONAL), |
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|
180 |
|
297
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181 |
SECURE: validation.Options(SECURE_HTTP, |
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182 |
SECURE_HTTPS, |
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183 |
SECURE_HTTP_OR_HTTPS, |
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184 |
default=SECURE_HTTP), |
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185 |
|
109
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186 |
|
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187 |
|
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|
188 |
HANDLER_STATIC_FILES: validation.Optional(_FILES_REGEX), |
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|
189 |
UPLOAD: validation.Optional(_FILES_REGEX), |
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|
190 |
|
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|
191 |
|
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192 |
HANDLER_STATIC_DIR: validation.Optional(_FILES_REGEX), |
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|
193 |
|
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|
194 |
|
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|
195 |
MIME_TYPE: validation.Optional(str), |
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196 |
EXPIRATION: validation.Optional(_EXPIRATION_REGEX), |
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|
197 |
|
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|
198 |
|
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|
199 |
HANDLER_SCRIPT: validation.Optional(_FILES_REGEX), |
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200 |
} |
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|
201 |
|
297
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|
202 |
COMMON_FIELDS = set([URL, LOGIN, SECURE]) |
109
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203 |
|
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|
204 |
ALLOWED_FIELDS = { |
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205 |
HANDLER_STATIC_FILES: (MIME_TYPE, UPLOAD, EXPIRATION), |
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|
206 |
HANDLER_STATIC_DIR: (MIME_TYPE, EXPIRATION), |
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|
207 |
HANDLER_SCRIPT: (), |
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208 |
} |
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|
209 |
|
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210 |
def GetHandler(self): |
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211 |
"""Get handler for mapping. |
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212 |
|
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213 |
Returns: |
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214 |
Value of the handler (determined by handler id attribute). |
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215 |
""" |
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216 |
return getattr(self, self.GetHandlerType()) |
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217 |
|
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218 |
def GetHandlerType(self): |
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219 |
"""Get handler type of mapping. |
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220 |
|
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221 |
Returns: |
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222 |
Handler type determined by which handler id attribute is set. |
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223 |
|
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224 |
Raises: |
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225 |
UnknownHandlerType when none of the no handler id attributes |
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|
226 |
are set. |
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|
227 |
|
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228 |
UnexpectedHandlerAttribute when an unexpected attribute |
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229 |
is set for the discovered handler type. |
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230 |
|
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231 |
HandlerTypeMissingAttribute when the handler is missing a |
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232 |
required attribute for its handler type. |
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233 |
""" |
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234 |
for id_field in URLMap.ALLOWED_FIELDS.iterkeys(): |
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235 |
if getattr(self, id_field) is not None: |
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236 |
mapping_type = id_field |
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237 |
break |
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238 |
else: |
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239 |
raise appinfo_errors.UnknownHandlerType( |
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240 |
'Unknown url handler type.\n%s' % str(self)) |
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241 |
|
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242 |
allowed_fields = URLMap.ALLOWED_FIELDS[mapping_type] |
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243 |
|
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244 |
for attribute in self.ATTRIBUTES.iterkeys(): |
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245 |
if (getattr(self, attribute) is not None and |
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246 |
not (attribute in allowed_fields or |
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247 |
attribute in URLMap.COMMON_FIELDS or |
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248 |
attribute == mapping_type)): |
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249 |
raise appinfo_errors.UnexpectedHandlerAttribute( |
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250 |
'Unexpected attribute "%s" for mapping type %s.' % |
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251 |
(attribute, mapping_type)) |
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252 |
|
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253 |
if mapping_type == HANDLER_STATIC_FILES and not self.upload: |
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254 |
raise appinfo_errors.MissingHandlerAttribute( |
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255 |
'Missing "%s" attribute for URL "%s".' % (UPLOAD, self.url)) |
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256 |
|
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257 |
return mapping_type |
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258 |
|
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|
259 |
def CheckInitialized(self): |
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260 |
"""Adds additional checking to make sure handler has correct fields. |
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|
261 |
|
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262 |
In addition to normal ValidatedCheck calls GetHandlerType |
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|
263 |
which validates all the handler fields are configured |
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|
264 |
properly. |
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|
265 |
|
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|
266 |
Raises: |
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|
267 |
UnknownHandlerType when none of the no handler id attributes |
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|
268 |
are set. |
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|
269 |
|
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|
270 |
UnexpectedHandlerAttribute when an unexpected attribute |
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|
271 |
is set for the discovered handler type. |
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|
272 |
|
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|
273 |
HandlerTypeMissingAttribute when the handler is missing a |
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|
274 |
required attribute for its handler type. |
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|
275 |
""" |
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|
276 |
super(URLMap, self).CheckInitialized() |
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|
277 |
self.GetHandlerType() |
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|
278 |
|
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|
279 |
|
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|
280 |
class AppInfoExternal(validation.Validated): |
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|
281 |
"""Class representing users application info. |
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|
282 |
|
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|
283 |
This class is passed to a yaml_object builder to provide the validation |
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|
284 |
for the application information file format parser. |
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|
285 |
|
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|
286 |
Attributes: |
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|
287 |
application: Unique identifier for application. |
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|
288 |
version: Application's major version number. |
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|
289 |
runtime: Runtime used by application. |
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|
290 |
api_version: Which version of APIs to use. |
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|
291 |
handlers: List of URL handlers. |
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|
292 |
default_expiration: Default time delta to use for cache expiration for |
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|
293 |
all static files, unless they have their own specific 'expiration' set. |
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|
294 |
See the URLMap.expiration field's documentation for more information. |
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|
295 |
skip_files: An re object. Files that match this regular expression will |
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|
296 |
not be uploaded by appcfg.py. For example: |
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|
297 |
skip_files: | |
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|
298 |
.svn.*| |
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|
299 |
#.*# |
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|
300 |
""" |
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|
301 |
|
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|
302 |
ATTRIBUTES = { |
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|
303 |
|
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|
304 |
|
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|
305 |
APPLICATION: APPLICATION_RE_STRING, |
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|
306 |
VERSION: VERSION_RE_STRING, |
828
f5fd65cc3bf3
Load /Users/solydzajs/Downloads/google_appengine into
Pawel Solyga <Pawel.Solyga@gmail.com>
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297
diff
changeset
|
307 |
RUNTIME: RUNTIME_RE_STRING, |
109
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|
308 |
|
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|
309 |
|
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|
310 |
API_VERSION: validation.Options('1', 'beta'), |
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|
311 |
HANDLERS: validation.Optional(validation.Repeated(URLMap)), |
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|
312 |
DEFAULT_EXPIRATION: validation.Optional(_EXPIRATION_REGEX), |
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|
313 |
SKIP_FILES: validation.RegexStr(default=DEFAULT_SKIP_FILES) |
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|
314 |
} |
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|
315 |
|
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|
316 |
def CheckInitialized(self): |
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|
317 |
"""Ensures that at least one url mapping is provided. |
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|
318 |
|
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changeset
|
319 |
Raises: |
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|
320 |
MissingURLMapping when no URLMap objects are present in object. |
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|
321 |
TooManyURLMappings when there are too many URLMap entries. |
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|
322 |
""" |
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diff
changeset
|
323 |
super(AppInfoExternal, self).CheckInitialized() |
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diff
changeset
|
324 |
if not self.handlers: |
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changeset
|
325 |
raise appinfo_errors.MissingURLMapping( |
620f9b141567
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|
326 |
'No URLMap entries found in application configuration') |
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|
327 |
if len(self.handlers) > MAX_URL_MAPS: |
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|
328 |
raise appinfo_errors.TooManyURLMappings( |
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changeset
|
329 |
'Found more than %d URLMap entries in application configuration' % |
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|
330 |
MAX_URL_MAPS) |
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changeset
|
331 |
|
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parents:
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changeset
|
332 |
|
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parents:
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changeset
|
333 |
def LoadSingleAppInfo(app_info): |
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|
334 |
"""Load a single AppInfo object where one and only one is expected. |
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|
335 |
|
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|
336 |
Args: |
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|
337 |
app_info: A file-like object or string. If it is a string, parse it as |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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changeset
|
338 |
a configuration file. If it is a file-like object, read in data and |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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changeset
|
339 |
parse. |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
340 |
|
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
341 |
Returns: |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
342 |
An instance of AppInfoExternal as loaded from a YAML file. |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
343 |
|
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
344 |
Raises: |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
345 |
EmptyConfigurationFile when there are no documents in YAML file. |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
346 |
MultipleConfigurationFile when there is more than one document in YAML |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
347 |
file. |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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changeset
|
348 |
""" |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
349 |
builder = yaml_object.ObjectBuilder(AppInfoExternal) |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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|
350 |
handler = yaml_builder.BuilderHandler(builder) |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
351 |
listener = yaml_listener.EventListener(handler) |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
352 |
listener.Parse(app_info) |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
353 |
|
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
354 |
app_infos = handler.GetResults() |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
355 |
if len(app_infos) < 1: |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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changeset
|
356 |
raise appinfo_errors.EmptyConfigurationFile() |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
357 |
if len(app_infos) > 1: |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
358 |
raise appinfo_errors.MultipleConfigurationFile() |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
359 |
return app_infos[0] |
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
360 |
|
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Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
361 |
|
149
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Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
362 |
def ParseExpiration(expiration): |
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109
diff
changeset
|
363 |
"""Parses an expiration delta string. |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
364 |
|
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
365 |
Args: |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
366 |
expiration: String that matches _DELTA_REGEX. |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
367 |
|
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
368 |
Returns: |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
369 |
Time delta in seconds. |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
370 |
""" |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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diff
changeset
|
371 |
delta = 0 |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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diff
changeset
|
372 |
for match in re.finditer(_DELTA_REGEX, expiration): |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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diff
changeset
|
373 |
amount = int(match.group(1)) |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
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diff
changeset
|
374 |
units = _EXPIRATION_CONVERSIONS.get(match.group(2).lower(), 1) |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
375 |
delta += amount * units |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
376 |
return delta |
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
377 |
|
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
378 |
|
f2e327a7c5de
Load ../google_appengine into trunk/thirdparty/google_appengine.
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parents:
109
diff
changeset
|
379 |
|
109
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
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parents:
diff
changeset
|
380 |
_file_path_positive_re = re.compile(r'^[ 0-9a-zA-Z\._\+/\$-]{1,256}$') |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
381 |
|
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
382 |
_file_path_negative_1_re = re.compile(r'\.\.|^\./|\.$|/\./|^-') |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
383 |
|
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
384 |
_file_path_negative_2_re = re.compile(r'//|/$') |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
385 |
|
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
386 |
_file_path_negative_3_re = re.compile(r'^ | $|/ | /') |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
387 |
|
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
388 |
|
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
389 |
def ValidFilename(filename): |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
390 |
"""Determines if filename is valid. |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
391 |
|
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
392 |
filename must be a valid pathname. |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
393 |
- It must contain only letters, numbers, _, +, /, $, ., and -. |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
394 |
- It must be less than 256 chars. |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
395 |
- It must not contain "/./", "/../", or "//". |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
396 |
- It must not end in "/". |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
397 |
- All spaces must be in the middle of a directory or file name. |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
398 |
|
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
399 |
Args: |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
400 |
filename: The filename to validate. |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
401 |
|
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
402 |
Returns: |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
403 |
An error string if the filename is invalid. Returns '' if the filename |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
404 |
is valid. |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
405 |
""" |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
406 |
if _file_path_positive_re.match(filename) is None: |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
407 |
return 'Invalid character in filename: %s' % filename |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
408 |
if _file_path_negative_1_re.search(filename) is not None: |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
409 |
return ('Filename cannot contain "." or ".." or start with "-": %s' % |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
410 |
filename) |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
411 |
if _file_path_negative_2_re.search(filename) is not None: |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
412 |
return 'Filename cannot have trailing / or contain //: %s' % filename |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
413 |
if _file_path_negative_3_re.search(filename) is not None: |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
414 |
return 'Any spaces must be in the middle of a filename: %s' % filename |
620f9b141567
Load ../../google_appengine into trunk/thirdparty/google_appengine.
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
415 |
return '' |