Add Configurable metric_name_prefix

infra_libs/ts_mon/config.py

 # Copyright 2015 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 json
 import logging
 import os
 import socket
 import sys
 import urlparse
@@ skipping 141 matching lines @@
   parser.add_argument(
       '--ts-mon-task-hostname',
       default=host,
       help='name of the host on which this task is running '
            '(default: %(default)s)')
   parser.add_argument(
       '--ts-mon-task-number', type=int, default=0,
       help='number (e.g. for replication) of this instance of this task '
            '(default: %(default)s)')
 
+  parser.add_argument(
+      '--ts-mon-metric-name-prefix',
+      default='/chrome/infra',

[Sergey Berezin, 2016/07/06 17:49:12]

Looks like you want '/chrome/infra/' (trailing slash)

+      help='metric name prefix for all metrics (default: %(default)s)')
 
 def process_argparse_options(args):
   """Process command line arguments to initialize the global monitor.
 
   Also initializes the default target.
 
   Starts a background thread to automatically flush monitoring metrics if not
   disabled by command line arguments.
 
   Args:
@@ skipping 33 matching lines @@
     hostname = args.ts_mon_task_hostname
     if args.ts_mon_autogen_hostname or autogen_hostname:
       hostname = 'autogen:' + hostname
     interface.state.target = targets.TaskTarget(
         args.ts_mon_task_service_name,
         args.ts_mon_task_job_name,
         args.ts_mon_task_region,
         hostname,
         args.ts_mon_task_number)
 
+  interface.state.metric_name_prefix = args.ts_mon_metric_name_prefix
   interface.state.global_monitor = monitors.NullMonitor()
 
   if endpoint.startswith('file://'):
     interface.state.global_monitor = monitors.DebugMonitor(
         endpoint[len('file://'):])
   elif endpoint.startswith('pubsub://'):
     if credentials:
       url = urlparse.urlparse(endpoint)
       project = url.netloc
       topic = url.path.strip('/')
       interface.state.global_monitor = monitors.PubSubMonitor(
           credentials, project, topic, use_instrumented_http=True)
     else:
       logging.error('ts_mon monitoring is disabled because credentials are not '
                     'available')
   elif endpoint.lower() == 'none':
     logging.info('ts_mon monitoring has been explicitly disabled')
   else:
     logging.error('ts_mon monitoring is disabled because the endpoint provided'
                   ' is invalid or not supported: %s', endpoint)
 
   interface.state.flush_mode = args.ts_mon_flush
 
   if args.ts_mon_flush == 'auto':
     interface.state.flush_thread = interface._FlushThread(
         args.ts_mon_flush_interval_secs)
     interface.state.flush_thread.start()
 
   standard_metrics.init()