Extensions Docs Server: Large performance increase

chrome/common/extensions/docs/server2/api_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.
 
 import json
-import logging
 import os
 
 from file_system import FileNotFoundError
+import file_system_cache as fs_cache
 from handlebar_dict_generator import HandlebarDictGenerator
 import third_party.json_schema_compiler.json_comment_eater as json_comment_eater
 import third_party.json_schema_compiler.model as model
 import third_party.json_schema_compiler.idl_schema as idl_schema
 import third_party.json_schema_compiler.idl_parser as idl_parser
 
 class _LazySamplesGetter(object):
   """This class is needed so that an extensions API page does not have to fetch
   the apps samples page and vice versa.
   """
   def __init__(self, api_name, samples):
     self._api_name = api_name
     self._samples = samples
 
   def get(self, key):
     return self._samples.FilterSamples(key, self._api_name)
 
 class APIDataSource(object):
   """This class fetches and loads JSON APIs from the FileSystem passed in with
   |cache_builder|, so the APIs can be plugged into templates.
   """
   class Factory(object):
     def __init__(self, cache_builder, base_path, samples_factory):
-      self._permissions_cache = cache_builder.build(self._LoadPermissions)
-      self._json_cache = cache_builder.build(self._LoadJsonAPI)
-      self._idl_cache = cache_builder.build(self._LoadIdlAPI)
+      self._permissions_cache = cache_builder.build(self._LoadPermissions,
+                                                    fs_cache.FS_CACHE_PERMS)
+      self._json_cache = cache_builder.build(self._LoadJsonAPI,
+                                             fs_cache.FS_CACHE_JSON)
+      self._idl_cache = cache_builder.build(self._LoadIdlAPI,
+                                            fs_cache.FS_CACHE_IDL)
       self._samples_factory = samples_factory
       self._base_path = base_path
 
     def Create(self, request):
       return APIDataSource(self._permissions_cache,
                            self._json_cache,
                            self._idl_cache,
                            self._base_path,
                            self._samples_factory.Create(request))
 
@@ skipping 58 matching lines @@
       return self._GenerateHandlebarContext(
           self._json_cache.GetFromFile(self._base_path + '/' + json_path),
           path)
     except FileNotFoundError:
       try:
         return self._GenerateHandlebarContext(
             self._idl_cache.GetFromFile(self._base_path + '/' + idl_path),
             path)
       except FileNotFoundError:
         raise