buildbucket: add monitoring using ts_mon

appengine/cr-buildbucket/main.py

 # 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.
 
 import os
 
 APP_DIR = os.path.dirname(os.path.abspath(__file__))
 import google
 
 google.__path__.insert(
   0, os.path.join(APP_DIR, 'components', 'third_party', 'protobuf', 'google'))
 
 from components import config
 from components import ereporter2
 from components import utils
 import endpoints
+import gae_ts_mon
 import webapp2
 
 import api
 import handlers
 import swarming
 
 
 def create_html_app():  # pragma: no cover
   """Returns WSGI app that serves HTML pages."""
-  return webapp2.WSGIApplication(
+  app = webapp2.WSGIApplication(
     handlers.get_frontend_routes(), debug=utils.is_local_dev_server())
+  gae_ts_mon.initialize(app)
+  return app
 
 
 def create_endpoints_app():  # pragma: no cover
   """Returns WSGI app that serves cloud endpoints requests."""
   return endpoints.api_server([api.BuildBucketApi, config.ConfigApi])
 
 
 def create_backend_app():  # pragma: no cover
   """Returns WSGI app for backend."""
   routes = handlers.get_backend_routes() + swarming.get_routes()
-  return webapp2.WSGIApplication(
-    routes, debug=utils.is_local_dev_server())
+  app = webapp2.WSGIApplication(routes, debug=utils.is_local_dev_server())
+  gae_ts_mon.initialize(app)
+  return app
 
 
 def initialize():  # pragma: no cover
   """Bootstraps the global state and creates WSGI applications."""
   ereporter2.register_formatter()
   return create_html_app(), create_endpoints_app(), create_backend_app()