django_example/django_bootstrap.py

   1 # Copyright 2008 Google Inc.
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15
  16 """Bootstrap for running a Django app under Google App Engine.
  17
  18 The site-specific code is all in other files: settings.py, urls.py,
  19 models.py, views.py.  And in fact, only 'settings' is referenced here
  20 directly -- everything else is controlled from there.
  21
  22 """
  23
  24 # Standard Python imports.
  25 import os
  26 import sys
  27 import logging
  28 import __builtin__
  29
  30 # Google App Hosting imports.
  31 from google.appengine.ext.webapp import util
  32
  33 import pickle
  34 sys.modules['cPickle'] = pickle
  35
  36 # Enable info logging by the app (this is separate from appserver's
  37 # logging).
  38 logging.getLogger().setLevel(logging.INFO)
  39
  40 # Force sys.path to have our own directory first, so we can import from it.
  41 sys.path.insert(0, os.path.abspath(os.path.dirname(__file__)))
  42
  43 # Must set this env var *before* importing any part of Django.
  44 os.environ['DJANGO_SETTINGS_MODULE'] = 'settings'
  45
  46 # Make sure we can import Django.  We may end up needing to do this
  47 # little dance, courtesy of Google third-party versioning hacks.  Note
  48 # that this patches up sys.modules, so all other code can just use
  49 # "from django import forms" etc.
  50 try:
  51   from django import v0_96 as django
  52 except ImportError:
  53   pass
  54
  55 # Import the part of Django that we use here.
  56 import django.core.handlers.wsgi
  57
  58 def main():
  59   # Create a Django application for WSGI.
  60   application = django.core.handlers.wsgi.WSGIHandler()
  61
  62   # Run the WSGI CGI handler with that application.
  63   util.run_wsgi_app(application)
  64
  65 if __name__ == '__main__':
  66   main()