Docserver: Properly implement the Cron logic for ContentProvider and TemplateDataSource so that the…

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

Index: chrome/common/extensions/docs/server2/template_data_source.py
diff --git a/chrome/common/extensions/docs/server2/template_data_source.py b/chrome/common/extensions/docs/server2/template_data_source.py
index aa1ee543038420f497abccacbf7ab6c71a5089da..7fbd7e192247e9b8a5269c3aa8eb89c32e338670 100644
--- a/chrome/common/extensions/docs/server2/template_data_source.py
+++ b/chrome/common/extensions/docs/server2/template_data_source.py
@@ -3,12 +3,13 @@
 # found in the LICENSE file.
 
 import logging
+import posixpath
 import traceback
 
 from data_source import DataSource
 from extensions_paths import PRIVATE_TEMPLATES
 from file_system import FileNotFoundError
-from future import Future
+from future import Future, Gettable
 
 
 class TemplateDataSource(DataSource):
@@ -19,6 +20,7 @@ class TemplateDataSource(DataSource):
     self._template_cache = server_instance.compiled_fs_factory.ForTemplates(
         server_instance.host_file_system_provider.GetTrunk())
     self._partial_dir = partial_dir
+    self._file_system = server_instance.host_file_system_provider.GetTrunk()
 
   def get(self, path):
     try:
@@ -29,6 +31,9 @@ class TemplateDataSource(DataSource):
       return None
 
   def Cron(self):
-    # TODO(kalman): Implement this; probably by finding all files that can be
-    # compiled to templates underneath |self._partial_dir| and compiling them.
-    return Future(value=())
+    futures = []
+    for root, _, files in self._file_system.Walk(self._partial_dir):
+      futures += [self._template_cache.GetFromFile(
+                      posixpath.join(self._partial_dir, root, f))
+                  for f in files]
+    return Future(delegate=Gettable(lambda: [f.Get() for f in futures]))