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#!/usr/bin/env python
# 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.
"""A script to recover devices in a known bad state."""
import argparse
import logging
import os
import psutil
import signal
import sys
if __name__ == '__main__':
sys.path.append(
os.path.abspath(os.path.join(os.path.dirname(__file__),
'..', '..', '..')))
from devil import devil_env
from devil.android import device_blacklist
from devil.android import device_errors
from devil.android import device_utils
from devil.android.tools import device_status
from devil.utils import lsusb
# TODO(jbudorick): Resolve this after experimenting w/ disabling the USB reset.
from devil.utils import reset_usb # pylint: disable=unused-import
from devil.utils import run_tests_helper
def KillAllAdb():
def get_all_adb():
for p in psutil.process_iter():
try:
if 'adb' in p.name:
yield p
except (psutil.NoSuchProcess, psutil.AccessDenied):
pass
for sig in [signal.SIGTERM, signal.SIGQUIT, signal.SIGKILL]:
for p in get_all_adb():
try:
logging.info('kill %d %d (%s [%s])', sig, p.pid, p.name,
' '.join(p.cmdline))
p.send_signal(sig)
except (psutil.NoSuchProcess, psutil.AccessDenied):
pass
for p in get_all_adb():
try:
logging.error('Unable to kill %d (%s [%s])', p.pid, p.name,
' '.join(p.cmdline))
except (psutil.NoSuchProcess, psutil.AccessDenied):
pass
def RecoverDevice(device, blacklist, should_reboot=lambda device: True):
if device_status.IsBlacklisted(device.adb.GetDeviceSerial(),
blacklist):
logging.debug('%s is blacklisted, skipping recovery.', str(device))
return
if should_reboot(device):
try:
device.WaitUntilFullyBooted(retries=0)
except (device_errors.CommandTimeoutError,
device_errors.CommandFailedError):
logging.exception('Failure while waiting for %s. '
'Attempting to recover.', str(device))
try:
try:
device.Reboot(block=False, timeout=5, retries=0)
except device_errors.CommandTimeoutError:
logging.warning('Timed out while attempting to reboot %s normally.'
'Attempting alternative reboot.', str(device))
# The device drops offline before we can grab the exit code, so
# we don't check for status.
device.adb.Root()
device.adb.Shell('echo b > /proc/sysrq-trigger', expect_status=None,
timeout=5, retries=0)
except device_errors.CommandFailedError:
logging.exception('Failed to reboot %s.', str(device))
if blacklist:
blacklist.Extend([device.adb.GetDeviceSerial()],
reason='reboot_failure')
except device_errors.CommandTimeoutError:
logging.exception('Timed out while rebooting %s.', str(device))
if blacklist:
blacklist.Extend([device.adb.GetDeviceSerial()],
reason='reboot_timeout')
try:
device.WaitUntilFullyBooted(
retries=0, timeout=device.REBOOT_DEFAULT_TIMEOUT)
except device_errors.CommandFailedError:
logging.exception('Failure while waiting for %s.', str(device))
if blacklist:
blacklist.Extend([device.adb.GetDeviceSerial()],
reason='reboot_failure')
except device_errors.CommandTimeoutError:
logging.exception('Timed out while waiting for %s.', str(device))
if blacklist:
blacklist.Extend([device.adb.GetDeviceSerial()],
reason='reboot_timeout')
def RecoverDevices(devices, blacklist, enable_usb_reset=False):
"""Attempts to recover any inoperable devices in the provided list.
Args:
devices: The list of devices to attempt to recover.
blacklist: The current device blacklist, which will be used then
reset.
"""
statuses = device_status.DeviceStatus(devices, blacklist)
should_restart_usb = set(
status['serial'] for status in statuses
if (not status['usb_status']
or status['adb_status'] in ('offline', 'missing')))
should_restart_adb = should_restart_usb.union(set(
status['serial'] for status in statuses
if status['adb_status'] == 'unauthorized'))
should_reboot_device = should_restart_adb.union(set(
status['serial'] for status in statuses
if status['blacklisted']))
logging.debug('Should restart USB for:')
for d in should_restart_usb:
logging.debug(' %s', d)
logging.debug('Should restart ADB for:')
for d in should_restart_adb:
logging.debug(' %s', d)
logging.debug('Should reboot:')
for d in should_reboot_device:
logging.debug(' %s', d)
if blacklist:
blacklist.Reset()
if should_restart_adb:
KillAllAdb()
for serial in should_restart_usb:
try:
# TODO(crbug.com/642194): Resetting may be causing more harm
# (specifically, kernel panics) than it does good.
if enable_usb_reset:
reset_usb.reset_android_usb(serial)
else:
logging.warning('USB reset disabled for %s (crbug.com/642914)',
serial)
except IOError:
logging.exception('Unable to reset USB for %s.', serial)
if blacklist:
blacklist.Extend([serial], reason='USB failure')
except device_errors.DeviceUnreachableError:
logging.exception('Unable to reset USB for %s.', serial)
if blacklist:
blacklist.Extend([serial], reason='offline')
device_utils.DeviceUtils.parallel(devices).pMap(
RecoverDevice, blacklist,
should_reboot=lambda device: device in should_reboot_device)
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--adb-path',
help='Absolute path to the adb binary to use.')
parser.add_argument('--blacklist-file', help='Device blacklist JSON file.')
parser.add_argument('--known-devices-file', action='append', default=[],
dest='known_devices_files',
help='Path to known device lists.')
parser.add_argument('--enable-usb-reset', action='store_true',
help='Reset USB if necessary.')
parser.add_argument('-v', '--verbose', action='count', default=1,
help='Log more information.')
args = parser.parse_args()
run_tests_helper.SetLogLevel(args.verbose)
devil_dynamic_config = devil_env.EmptyConfig()
if args.adb_path:
devil_dynamic_config['dependencies'].update(
devil_env.LocalConfigItem(
'adb', devil_env.GetPlatform(), args.adb_path))
devil_env.config.Initialize(configs=[devil_dynamic_config])
blacklist = (device_blacklist.Blacklist(args.blacklist_file)
if args.blacklist_file
else None)
expected_devices = device_status.GetExpectedDevices(args.known_devices_files)
usb_devices = set(lsusb.get_android_devices())
devices = [device_utils.DeviceUtils(s)
for s in expected_devices.union(usb_devices)]
RecoverDevices(devices, blacklist, enable_usb_reset=args.enable_usb_reset)
if __name__ == '__main__':
sys.exit(main())
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