Devserver: only populate data during cron jobs, meaning all data from instances

chrome/common/extensions/docs/server2/test_file_system.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 file_system import FileSystem, FileNotFoundError, StatInfo
 from future import Future
 
 class TestFileSystem(FileSystem):
   '''A FileSystem backed by an object. Create with an object representing file
   paths such that {'a': {'b': 'hello'}} will resolve Read('a/b') as 'hello',
@@ skipping 85 matching lines @@
           '%s (%s) did not resolve to a dict, instead %s' %
           (path, parts, dir_contents))
 
     return GetPaths(dir_contents)
 
   def Stat(self, path):
     self._stat_count += 1
     return self._StatImpl(path)
 
   def _StatImpl(self, path):
-    read_result = self._ReadImpl([path]).Get()[path]
+    read_result = self._ReadImpl([path]).Get().get(path)
     stat_result = StatInfo(self._SinglePathStat(path))
     if isinstance(read_result, list):
       stat_result.child_versions = dict(
           (file_result, self._SinglePathStat('%s%s' % (path, file_result)))
           for file_result in read_result)
     return stat_result
 
   def _SinglePathStat(self, path):
     return str(self._global_stat + self._path_stats.get(path, 0))
 
   #
   # Testing methods.
   #
 
   def IncrementStat(self, path=None):
     if path is not None:
       self._path_stats[path] = self._path_stats.get(path, 0) + 1
     else:
       self._global_stat += 1
 
   def CheckAndReset(self, stat_count=0, read_count=0):
     try:
       return (self._read_count == read_count and
               self._stat_count == stat_count)
     finally:
       self._read_count = 0
       self._stat_count = 0