Keep track of hashes triggered instead of builds.

scripts/slave/gatekeeper_ng_config.py

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 """Loads gatekeeper configuration files for use with gatekeeper_ng.py.
 
 The gatekeeper json configuration file has two main sections: 'masters'
 and 'categories.' The following shows the breakdown of a possible config,
 but note that all nodes are optional (including the root 'masters' and
@@ skipping 229 matching lines @@
 
 
 def inject_hashes(gatekeeper_config):
   new_config = copy.deepcopy(gatekeeper_config)
   for master in new_config.values():
     for section in master:
       section['section_hash'] = gatekeeper_section_hash(section)
   return new_config
 
 
+# Python's sets aren't JSON-encodable, so we convert them to lists here.
+class SetEncoder(json.JSONEncoder):
+  # pylint: disable=E0202
+  def default(self, obj):
+    if isinstance(obj, set):
+      return sorted(list(obj))
+    return json.JSONEncoder.default(self, obj)
+
+
 def flatten_to_json(gatekeeper_config, stream):
-  # Python's sets aren't JSON-encodable, so we convert them to lists here.
-  class SetEncoder(json.JSONEncoder):
-    # pylint: disable=E0202
-    def default(self, obj):
-      if isinstance(obj, set):
-        return sorted(list(obj))
-      return json.JSONEncoder.default(self, obj)
-
   json.dump(gatekeeper_config, stream, cls=SetEncoder, sort_keys=True)
 
 
 def main():
   prog_desc = 'Reads gatekeeper.json and emits a flattened config.'
   usage = '%prog [options]'
   parser = optparse.OptionParser(usage=(usage + '\n\n' + prog_desc))
   parser.add_option('--json', default=os.path.join(DATA_DIR, 'gatekeeper.json'),
                     help='location of gatekeeper configuration file')
   parser.add_option('--no-hashes', action='store_true',
                     help='don\'t insert gatekeeper section hashes')
   options, _ = parser.parse_args()
 
   gatekeeper_config = load_gatekeeper_config(options.json)
 
   if not options.no_hashes:
     gatekeeper_config = inject_hashes(gatekeeper_config)
 
   flatten_to_json(gatekeeper_config, sys.stdout)
   print
 
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())