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

chrome/common/extensions/docs/server2/intro_data_source.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.
 
 from HTMLParser import HTMLParser
 import logging
 import os
 import re
 
 from docs_server_utils import FormatKey
 from file_system import FileNotFoundError
 import compiled_file_system as compiled_fs
 from third_party.handlebar import Handlebar
 
 # TODO(kalman): rename this HTMLDataSource or other, then have separate intro
 # article data sources created as instances of it.
 
-# Increment this if the data model changes for IntroDataSource.
-_VERSION = 5
-
 _H1_REGEX = re.compile('<h1[^>.]*?>.*?</h1>', flags=re.DOTALL)
 
 class _IntroParser(HTMLParser):
   """ An HTML parser which will parse table of contents and page title info out
   of an intro.
   """
   def __init__(self):
     HTMLParser.__init__(self)
     self.toc = []
     self.page_title = None
@@ skipping 31 matching lines @@
     elif self._recent_tag in ['h2', 'h3']:
       self._current_heading['title'] += data
 
 class IntroDataSource(object):
   """This class fetches the intros for a given API. From this intro, a table
   of contents dictionary is created, which contains the headings in the intro.
   """
   class Factory(object):
     def __init__(self, compiled_fs_factory, ref_resolver_factory, base_paths):
       self._cache = compiled_fs_factory.Create(self._MakeIntroDict,
-                                               IntroDataSource,
-                                               version=_VERSION)
+                                               IntroDataSource)
       self._ref_resolver = ref_resolver_factory.Create()
       self._base_paths = base_paths
 
     def _MakeIntroDict(self, intro_path, intro):
       # Guess the name of the API from the path to the intro.
       api_name = os.path.splitext(intro_path.split('/')[-1])[0]
       intro_with_links = self._ref_resolver.ResolveAllLinks(intro,
                                                             namespace=api_name)
       apps_parser = _IntroParser()
       apps_parser.feed(Handlebar(intro_with_links).render(
@@ skipping 30 matching lines @@
       return self._cache.GetFromFile('%s/%s' % (base_path, path))
     for base_path in self._base_paths:
       try:
         return get_from_base_path(base_path)
       except FileNotFoundError:
         continue
     # Not found. Do the first operation again so that we get a stack trace - we
     # know that it'll fail.
     get_from_base_path(self._base_paths[0])
     raise AssertionError()