Add stub for new polymer-based Isolate UI

appengine/isolate/handlers_frontend.py

 # Copyright 2012 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 """This module defines Isolate Server frontend url handlers."""
 
 import collections
 import datetime
 import json
 import logging
@@ skipping 368 matching lines @@
     }
     if auth.is_admin():
       params['mapreduce_jobs'] = [
         {'id': job_id, 'name': job_def['job_name']}
         for job_id, job_def in mapreduce_jobs.MAPREDUCE_JOBS.iteritems()
       ]
       params['xsrf_token'] = self.generate_xsrf_token()
     self.response.write(template.render('isolate/root.html', params))
 
 
+class UIHandler(auth.AuthenticatingHandler):
+  """Serves the landing page for the new UI of the requested page.
+
+  This landing page is stamped with the OAuth 2.0 client id from the
+  configuration.
+  """
+  @auth.public
+  def get(self):
+    params = {}
+    # Can cache for 1 week, because the only thing that would change in this
+    # template is the oauth client id, which changes very infrequently.
+    self.response.cache_control.no_cache = None
+    self.response.cache_control.public = True
+    self.response.cache_control.max_age = 604800
+    try:
+      self.response.write(template.render(
+        'isolate/public_isolate_index.html', params))
+    except template.TemplateNotFound:
+      self.abort(404, 'Page not found.')
+
+
 class WarmupHandler(webapp2.RequestHandler):
   def get(self):
     config.warmup()
     auth.warmup()
     self.response.headers['Content-Type'] = 'text/plain; charset=utf-8'
     self.response.write('ok')
 
 
 class EmailHandler(webapp2.RequestHandler):
   """Blackhole any email sent."""
@@ skipping 15 matching lines @@
       # User web pages.
       webapp2.Route(r'/browse', BrowseHandler),
       webapp2.Route(r'/content', ContentHandler),
       # TODO(maruel): These really need to be migrated to Cloud Endpoints, gviz
       # is just too sorry.
       #webapp2.Route(r'/stats', StatsHandler),
       #webapp2.Route(r'/isolate/api/v1/stats/days', StatsGvizDaysHandler),
       #webapp2.Route(r'/isolate/api/v1/stats/hours', StatsGvizHoursHandler),
       #webapp2.Route(r'/isolate/api/v1/stats/minutes', StatsGvizMinutesHandler),
       webapp2.Route(r'/', RootHandler),
+      webapp2.Route(r'/newui', UIHandler),
 
       # AppEngine-specific urls:
       webapp2.Route(r'/_ah/mail/<to:.+>', EmailHandler),
       webapp2.Route(r'/_ah/warmup', WarmupHandler),
   ]
   routes.extend(handlers_endpoints_v1.get_routes())
   return routes
 
 
 def create_application(debug):
   """Creates the url router.
 
   The basic layouts is as follow:
   - /restricted/.* requires being an instance administrator.
   - /stats/.* has statistics.
   """
   acl.bootstrap()
   template.bootstrap()
   return webapp2.WSGIApplication(get_routes(), debug=debug)