Extensions Docs Server: Efficient MemcacheFileSystem

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

Index: chrome/common/extensions/docs/server2/file_system.py
diff --git a/chrome/common/extensions/docs/server2/file_system.py b/chrome/common/extensions/docs/server2/file_system.py
index 51e54bd034391282795d30804f1c8b6617a8029e..6d3357b0ea6112fa8907ab89c0ad6bbb06e87a1b 100644
--- a/chrome/common/extensions/docs/server2/file_system.py
+++ b/chrome/common/extensions/docs/server2/file_system.py
@@ -22,8 +22,9 @@ class FileSystem(object):
   class StatInfo(object):
     """The result of calling Stat on a FileSystem.
     """
-    def __init__(self, version):
+    def __init__(self, version, child_versions=None):
       self.version = version
+      self.child_versions = child_versions
 
   def Read(self, paths, binary=False):
     """Reads each file in paths and returns a dictionary mapping the path to the
@@ -42,7 +43,8 @@ class FileSystem(object):
     return self.Read([path]).Get()[path]
 
   def Stat(self, path):
-    """Gets the version number of |path| if it is a directory, or the parent
-    directory if it is a file.
+    """Returns a |StatInfo| object containing the version of |path|. If |path|
+    is a directory, |StatInfo| will have the versions of all the children of
+    the directory in |StatInfo.child_versions|.
     """
     raise NotImplementedError()