host_heartbeat.py - mozsearch

Enable keyboard shortcuts

#!/usr/bin/env vpython3

# Copyright (c) 2013 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.

"""Sends a heart beat pulse to the currently online Android devices.

This heart beat lets the devices know that they are connected to a host.

"""

# pylint: disable=W0702

import sys

import time

import devil_chromium

from devil.android import device_utils

PULSE_PERIOD = 20

def main():

  devil_chromium.Initialize()

  while True:

    try:

      devices = device_utils.DeviceUtils.HealthyDevices(denylist=None)

      for d in devices:

        d.RunShellCommand(['touch', '/sdcard/host_heartbeat'],

                          check_return=True)

    except:

      # Keep the heatbeat running bypassing all errors.

      pass

    time.sleep(PULSE_PERIOD)

if __name__ == '__main__':

  sys.exit(main())