Extension docs server: many changes to bring down the latency of the server,

chrome/common/extensions/docs/server2/handler.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 logging
 import os
 import sys
 
 from appengine_wrappers import webapp
 from appengine_wrappers import memcache
@@ skipping 57 matching lines @@
   else:
     svn_url = _GetURLFromBranch(branch) + '/' + EXTENSIONS_PATH
     stat_fetcher = AppEngineUrlFetcher(
         svn_url.replace(url_constants.SVN_URL, url_constants.VIEWVC_URL))
     fetcher = AppEngineUrlFetcher(svn_url)
     file_system = MemcacheFileSystem(
         SubversionFileSystem(fetcher, stat_fetcher),
         AppEngineMemcache(branch))
 
   cache_builder = FileSystemCache.Builder(file_system)
-  api_list_data_source = APIListDataSource(cache_builder,
-                                           file_system,
-                                           API_PATH,
-                                           PUBLIC_TEMPLATE_PATH)
-  intro_data_source = IntroDataSource(cache_builder,
-                                      [INTRO_PATH, ARTICLE_PATH])
+  api_list_data_source_factory = APIListDataSource.Factory(cache_builder,
+                                                           file_system,
+                                                           API_PATH,
+                                                           PUBLIC_TEMPLATE_PATH)
+  intro_data_source_factory = IntroDataSource.Factory(
+      cache_builder,
+      [INTRO_PATH, ARTICLE_PATH])
   samples_data_source_factory = SamplesDataSource.Factory(branch,
                                                           file_system,
                                                           GITHUB_FILE_SYSTEM,
                                                           cache_builder,
                                                           GITHUB_CACHE_BUILDER,
                                                           EXAMPLES_PATH)
   api_data_source_factory = APIDataSource.Factory(cache_builder,
                                                   API_PATH,
                                                   samples_data_source_factory)
   template_data_source_factory = TemplateDataSource.Factory(
       channel_name,
       api_data_source_factory,
-      api_list_data_source,
-      intro_data_source,
+      api_list_data_source_factory,
+      intro_data_source_factory,
       samples_data_source_factory,
       cache_builder,
       PUBLIC_TEMPLATE_PATH,
       PRIVATE_TEMPLATE_PATH)
   example_zipper = ExampleZipper(file_system,
                                  cache_builder,
                                  DOCS_PATH,
                                  EXAMPLES_PATH)
   SERVER_INSTANCES[branch] = ServerInstance(
       template_data_source_factory,
@@ skipping 43 matching lines @@
         self._NavigateToPath('apps/samples.html')
       return
 
     # Redirect paths like "directory" to "directory/". This is so relative file
     # paths will know to treat this as a directory.
     if os.path.splitext(path)[1] == '' and path[-1] != '/':
       self.redirect(path + '/')
     path = path.replace('/chrome/', '')
     path = path.strip('/')
     self._NavigateToPath(path)