You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
3.5 KiB
99 lines
3.5 KiB
4 months ago
|
# Copyright 2016 The Chromium OS Authors. All rights reserved.
|
||
|
|
# Use of this source code is governed by a BSD-style license that can be
|
||
|
|
# found in the LICENSE file.
|
||
|
|
|
||
|
|
"""Utilities used with Brillo hosts."""
|
||
|
|
|
||
|
|
import contextlib
|
||
|
|
import logging
|
||
|
|
|
||
|
|
import common
|
||
|
|
from autotest_lib.client.bin import utils
|
||
|
|
|
||
|
|
|
||
|
|
_RUN_BACKGROUND_TEMPLATE = '( %(cmd)s ) </dev/null >/dev/null 2>&1 & echo -n $!'
|
||
|
|
|
||
|
|
_WAIT_CMD_TEMPLATE = """\
|
||
|
|
to=%(timeout)d; \
|
||
|
|
while test ${to} -ne 0; do \
|
||
|
|
test $(ps %(pid)d | wc -l) -gt 1 || break; \
|
||
|
|
sleep 1; \
|
||
|
|
to=$((to - 1)); \
|
||
|
|
done; \
|
||
|
|
test ${to} -ne 0 -o $(ps %(pid)d | wc -l) -eq 1 \
|
||
|
|
"""
|
||
|
|
|
||
|
|
|
||
|
|
def run_in_background(host, cmd):
|
||
|
|
"""Runs a command in the background on the DUT.
|
||
|
|
|
||
|
|
@param host: A host object representing the DUT.
|
||
|
|
@param cmd: The command to run.
|
||
|
|
|
||
|
|
@return The background process ID (integer).
|
||
|
|
"""
|
||
|
|
background_cmd = _RUN_BACKGROUND_TEMPLATE % {'cmd': cmd}
|
||
|
|
return int(host.run_output(background_cmd).strip())
|
||
|
|
|
||
|
|
|
||
|
|
def wait_for_process(host, pid, timeout=-1):
|
||
|
|
"""Waits for a process on the DUT to terminate.
|
||
|
|
|
||
|
|
@param host: A host object representing the DUT.
|
||
|
|
@param pid: The process ID (integer).
|
||
|
|
@param timeout: Number of seconds to wait; default is wait forever.
|
||
|
|
|
||
|
|
@return True if process terminated within the alotted time, False otherwise.
|
||
|
|
"""
|
||
|
|
wait_cmd = _WAIT_CMD_TEMPLATE % {'pid': pid, 'timeout': timeout}
|
||
|
|
return host.run(wait_cmd, ignore_status=True).exit_status == 0
|
||
|
|
|
||
|
|
|
||
|
|
@contextlib.contextmanager
|
||
|
|
def connect_to_ssid(host, ssid, passphrase):
|
||
|
|
"""Connects to a given ssid.
|
||
|
|
|
||
|
|
@param host: A host object representing the DUT.
|
||
|
|
@param ssid: A string representing the ssid to connect to. If ssid is None,
|
||
|
|
assume that host is already connected to wifi.
|
||
|
|
@param passphrase: A string representing the passphrase to the ssid.
|
||
|
|
Defaults to None.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
if ssid is None:
|
||
|
|
# No ssid is passed. It is assumed that the host is already
|
||
|
|
# connected to wifi.
|
||
|
|
logging.warning('This test assumes that the device is connected to '
|
||
|
|
'wifi. If it is not, this test will fail.')
|
||
|
|
yield
|
||
|
|
else:
|
||
|
|
logging.info('Connecting to ssid %s', ssid)
|
||
|
|
# Update the weaved init.rc to stop privet. This sets up shill in
|
||
|
|
# client mode allowing it to connect to wifi.
|
||
|
|
host.remount()
|
||
|
|
host.run('sed \'s/service weaved \/system\/bin\/weaved/'
|
||
|
|
'service weaved \/system\/bin\/weaved --disable_privet/\' '
|
||
|
|
'-i /system/etc/init/weaved.rc')
|
||
|
|
host.reboot()
|
||
|
|
utils.poll_for_condition(
|
||
|
|
lambda: 'running' in host.run('getprop init.svc.shill'
|
||
|
|
).stdout,
|
||
|
|
sleep_interval=1, timeout=300,
|
||
|
|
desc='shill was not started by init')
|
||
|
|
logging.info('Connecting to wifi')
|
||
|
|
wifi_cmd = ('shill_setup_wifi --ssid=%s '
|
||
|
|
'--wait-for-online-seconds=%i' % (ssid, 300))
|
||
|
|
if passphrase:
|
||
|
|
wifi_cmd += ' --passphrase=%s' % passphrase
|
||
|
|
host.run(wifi_cmd)
|
||
|
|
yield
|
||
|
|
finally:
|
||
|
|
if ssid:
|
||
|
|
# If we connected to a ssid, disconnect.
|
||
|
|
host.remount()
|
||
|
|
host.run('sed \'s/service weaved \/system\/bin\/weaved '
|
||
|
|
'--disable_privet/service weaved \/system\/bin\/weaved/\' '
|
||
|
|
'-i /system/etc/init/weaved.rc')
|
||
|
|
host.run('stop weaved')
|
||
|
|
host.run('start weaved')
|