tools/android/loading Add timestamps to backend logs.

tools/android/loading/cloud/backend/worker.py

 # Copyright 2016 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 argparse
 import json
 import logging
 import os
 import sys
 
@@ skipping 187 matching lines @@
     # any time.
 
 if __name__ == '__main__':
   parser = argparse.ArgumentParser(
       description='ComputeEngine Worker for Clovis')
   parser.add_argument('--config', required=True,
                       help='Path to the configuration file.')
   args = parser.parse_args()
 
   # Configure logging.
-  logging.basicConfig(level=logging.WARNING)
+  logging.basicConfig(level=logging.WARNING,
+                      format='[%(asctime)s][%(levelname)s] %(message)s',

[mattcary, 2016/06/06 14:50:23]

Do you know if this ends up matching the same time zone as reported in the
appengine logging?

[droger, 2016/06/06 15:25:24]

It seems it is the same, but this is probably by chance.
Looking at the doc, it says that logging uses the local time by default.

Lets explicitly use UTC.

+                      datefmt='%y-%m-%d %H:%M:%S')
   worker_logger = logging.getLogger('worker')
   worker_logger.setLevel(logging.INFO)
 
   worker_logger.info('Reading configuration')
   with open(args.config) as config_json:
     worker = Worker(json.load(config_json), worker_logger)
     worker.Start()