def build_message()

in loggen/message_generator.py [0:0]


def build_message():
  """ Generates an event message imitation
  :return: A random event message
  """
  return dict(
      uid=build_user_id(),
      # change experiment ids based on date/time
      experiment_id=random.randint(1, 100),
      variant=_EXPERIMENT_VARIANTS[random.randint(0, 3)],
      timestamp=datetime.datetime.utcnow().strftime('%Y-%m-%dT%H:%M:%SZ'))