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chrome/common/extensions/docs/server2/caching_rietveld_patcher.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 datetime import datetime, timedelta
 from file_system import FileNotFoundError, ToUnicode
 from future import Future
 from patcher import Patcher
 
 _VERSION_CACHE_MAXAGE = timedelta(seconds=5)
@@ skipping 49 matching lines @@
   ''' CachingRietveldPatcher implements a caching layer on top of |patcher|.
   In theory, it can be used with any class that implements Patcher. But this
   class assumes that applying to all patched files at once is more efficient
   than applying to individual files.
   '''
   def __init__(self,
                rietveld_patcher,
                object_store_creator,
                test_datetime=datetime):
     self._patcher = rietveld_patcher
-    self._version_object_store = object_store_creator.Create(
-        CachingRietveldPatcher, category='version')
-    self._list_object_store = object_store_creator.Create(
-        CachingRietveldPatcher, category='list')
-    self._file_object_store = object_store_creator.Create(
-        CachingRietveldPatcher, category='file')
+    def create_object_store(category):
+      return object_store_creator.Create(
+          CachingRietveldPatcher,
+          category='%s/%s' % (rietveld_patcher.GetIdentity(), category))
+    self._version_object_store = create_object_store('version')
+    self._list_object_store = create_object_store('list')
+    self._file_object_store = create_object_store('file')
     self._datetime = test_datetime
 
   def GetVersion(self):
     key = 'version'
     value = self._version_object_store.Get(key).Get()
     if value is not None:
       version, time = value
       if self._datetime.now() - time < _VERSION_CACHE_MAXAGE:
         return version
 
@@ skipping 31 matching lines @@
     return _AsyncUncachedFuture(version,
                                 paths,
                                 binary,
                                 cached_value,
                                 missing_paths,
                                 self._patcher.Apply(set(added) | set(modified),
                                                     None,
                                                     True,
                                                     version),
                                 self._file_object_store)
+
+  def GetIdentity(self):
+    return self._patcher.GetIdentity()