Activate pubsub for dart masters

masters/master.client.dart/master.cfg

 # -*- python -*-
 # ex: set syntax=python:
 
 # Copyright (c) 2012 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.
 
 # It has one job: define a dictionary named BuildmasterConfig. This
 # dictionary has a variety of keys to control different aspects of the
 # buildmaster. They are documented in docs/config.xhtml .
 
 from buildbot.scheduler import Dependent
 from buildbot.scheduler import Scheduler
 from buildbot.schedulers import triggerable
 
 from master import build_utils
 from master import master_utils
 from master import slaves_list
 from master import status_logger
+from master import pubsub_json_status_push
 from master.factory import annotator_factory
 from master.factory.dart import dart_factory
 from master.factory.dart.dart_factory import (linux_env, windows_env,
     linux_clang_env, linux_asan_env_32, linux_asan_env_64)
 from master.factory.dart.channels import CHANNELS
 
 from twisted.python import log
 
 import config
 import master_site_config
@@ skipping 561 matching lines @@
 c['prioritizeBuilders'] = utils.prioritize_builders
 
 ####### STATUS TARGETS
 
 # 'status' is a list of Status Targets. The results of each build will be
 # pushed to these targets. buildbot/status/*.py has a variety to choose from,
 # including web pages, email senders, and IRC bots.
 
 c['status'] = [status_logger.StatusEventLogger()]
 
+# Add in the pubsub pusher, which pushes all status updates to a pubsub
+# topic.  This will not run unless is_production_host is set to True.
+# This will fail on a production host if it cannot find the service
+# account file.
+pubsub_pusher = pubsub_json_status_push.StatusPush.CreateStatusPush(
+    activeMaster=ActiveMaster)
+if pubsub_pusher:
+  c['status'].append(pubsub_pusher)
+
 if WEB_STATUS:
   for status in utils.get_web_statuses():
     c['status'].append(status)
 
 if MAIL_NOTIFIER:
   # We have people that are interested in a specific subset of the builders
   # and want to be notified whenever they break.
   mail_notifiers = [
     {
       'extraRecipients': ['whesse+botfailures@google.com',],
@@ skipping 63 matching lines @@
 c['projectName'] = ActiveMaster.project_name
 c['projectURL'] = config.Master.project_url
 
 # the 'buildbotURL' string should point to the location where the buildbot's
 # internal web server (usually the html.Waterfall page) is visible. This
 # typically uses the port number set in the Waterfall 'status' entry, but
 # with an externally-visible host name which the buildbot cannot figure out
 # without some help.
 
 c['buildbotURL'] = ActiveMaster.buildbot_url