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37 lines
893 B
Python
37 lines
893 B
Python
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#!/usr/bin/env python
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#
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# Copyright (c) 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Sends a heart beat pulse to the currently online Android devices.
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This heart beat lets the devices know that they are connected to a host.
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"""
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# pylint: disable=W0702
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import sys
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import time
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import devil_chromium
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from devil.android import device_utils
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PULSE_PERIOD = 20
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def main():
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devil_chromium.Initialize()
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while True:
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try:
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devices = device_utils.DeviceUtils.HealthyDevices(blacklist=None)
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for d in devices:
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d.RunShellCommand(['touch', '/sdcard/host_heartbeat'],
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check_return=True)
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except:
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# Keep the heatbeat running bypassing all errors.
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pass
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time.sleep(PULSE_PERIOD)
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if __name__ == '__main__':
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sys.exit(main())
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