Devserver: only populate data during cron jobs, meaning all data from instances

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

+# Copyright 2013 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.
+
+from appengine_wrappers import db
+import cPickle
+
+# A collection of the data store models used throughout the server.
+# These values are global within datastore.
+
+class PersistentObjectStoreItem(db.Model):
+  pickled_value = db.BlobProperty()
+
+  @classmethod
+  def CreateKey(cls, namespace, key):
+    return db.Key.from_path(cls.__name__, '%s/%s' % (namespace, key))
+
+  @classmethod
+  def CreateItem(cls, namespace, key, value):
+    return PersistentObjectStoreItem(key=cls.CreateKey(namespace, key),
+                                     pickled_value=cPickle.dumps(value))
+
+  def GetValue(self):
+    return cPickle.loads(self.pickled_value)