Devserver: have a separate ObjectStore namespace (both memcache and datastore)

chrome/common/extensions/docs/server2/appengine_wrappers.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 
+def GetAppVersion():
+  if 'CURRENT_VERSION_ID' in os.environ:
+    return os.environ['CURRENT_VERSION_ID']
+  # Not running on appengine, get it from the app.yaml file ourselves. We
+  # could properly parse this using a yaml library but Python doesn't have
+  # one built in so whatevs.
+  version_key = 'version:'
+  app_yaml_path = os.path.join(os.path.split(__file__)[0], 'app.yaml')
+  with open(app_yaml_path, 'r') as app_yaml:
+    version_line = [line for line in app_yaml.read().split('\n')
+                    if line.startswith(version_key)][0]
+  return version_line[len(version_key):].strip()
+
 def IsDevServer():
   return os.environ.get('SERVER_SOFTWARE', '').find('Development') == 0
 
 # This will attempt to import the actual App Engine modules, and if it fails,
 # they will be replaced with fake modules. This is useful during testing.
 try:
   import google.appengine.ext.blobstore as blobstore
   from google.appengine.ext.blobstore.blobstore import BlobReferenceProperty
   import google.appengine.ext.db as db
   import google.appengine.ext.webapp as webapp
@@ skipping 227 matching lines @@
       db._store.pop(key, None)
       return _RPC()
 
     @staticmethod
     def put_async(value):
       db._store[value.key] = value
       return _RPC()
 
   class BlobReferenceProperty(object):
     pass