blob: ffee32cbca3a6256b37d42c8e7567eca904ee76e [file] [log] [blame]
# Copyright 2018 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.
import contextlib
import logging
from autotest_lib.server import autotest
from autotest_lib.server.cros.tradefed import tradefed_constants as constants
class ChromeLogin(object):
"""Context manager to handle Chrome login state."""
def need_reboot(self, hard_reboot=False):
"""Marks state as "dirty" - reboot needed during/after test."""'Will reboot DUT when Chrome stops.')
self._need_reboot = True
if hard_reboot and self._host.servo:
self._hard_reboot_on_failure = True
def __init__(self, host, board=None, dont_override_profile=False,
"""Initializes the ChromeLogin object.
@param board: optional parameter to extend timeout for login for slow
DUTs. Used in particular for virtual machines.
@param dont_override_profile: reuses the existing test profile if any
@param enable_default_apps: enables default apps (like Files app)
self._host = host
self._timeout = constants.LOGIN_BOARD_TIMEOUT.get(
board, constants.LOGIN_DEFAULT_TIMEOUT)
self._dont_override_profile = dont_override_profile
self._enable_default_apps = enable_default_apps
self._need_reboot = False
self._hard_reboot_on_failure = False
def _cmd_builder(self, verbose=False):
"""Gets remote command to start browser with ARC enabled."""
# If autotest is not installed on the host, as with moblab at times,
# getting the autodir will raise an exception.
cmd = autotest.Autotest.get_installed_autodir(self._host)
cmd += '/bin/ --arc'
# We want to suppress the Google doodle as it is not part of the image
# and can be different content every day interacting with testing.
cmd += ' --no-startup-window'
# Disable several forms of auto-installation to stablize the tests.
cmd += ' --no-arc-syncs'
if self._dont_override_profile:'Starting Chrome with a possibly reused profile.')
cmd += ' --dont_override_profile'
else:'Starting Chrome with a fresh profile.')
if self._enable_default_apps:'Using --enable_default_apps to start Chrome.')
cmd += ' --enable_default_apps'
if not verbose:
cmd += ' > /dev/null 2>&1'
return cmd
def _login_by_script(self, timeout, verbose):
"""Runs the script on the DUT to log in."""
def _login(self, timeout, verbose=False, install_autotest=False):
"""Logs into Chrome. Raises an exception on failure."""
if not install_autotest:
# Assume autotest to be already installed.
self._login_by_script(timeout=timeout, verbose=verbose)
except autotest.AutodirNotFoundError:
logging.warning('Autotest not installed, forcing install...')
install_autotest = True
if install_autotest:
# Installs the autotest client to the DUT by running a dummy test.
'dummy_Pass', timeout=2 * timeout, check_client_result=True)
# The (re)run the login script.
self._login_by_script(timeout=timeout, verbose=verbose)
# Sanity check if Android has really started. When autotest client
# installed on the DUT was partially broken, the script may succeed
# without actually logging into Chrome/Android. See b/129382439.
'android-sh -c "ls /data/misc/adb"', ignore_status=False, timeout=9)
def enter(self):
"""Logs into Chrome with retry."""
timeout = self._timeout
try:'Ensure Android is running (timeout=%d)...', timeout)
except Exception as e:
logging.error('Login failed.', exc_info=e)
# Retry with more time, with refreshed client autotest installation,
# and the DUT cleanup by rebooting. This can hide some failures.
timeout *= 2'Retrying failed login (timeout=%d)...', timeout)
self._login(timeout=timeout, verbose=True, install_autotest=True)
def exit(self):
"""On exit restart the browser or reboot the machine."""
if not self._need_reboot:
logging.error('Restarting browser has failed.')
if self._need_reboot:
def _restart(self):
"""Restart Chrome browser."""
# We clean up /tmp (which is memory backed) from crashes and
# other files. A reboot would have cleaned /tmp as well.
# TODO(ihf): Remove "start ui" which is a nicety to non-ARC tests (i.e.
# now we wait on login screen, but login() above will 'stop ui' again
# before launching Chrome with ARC enabled).'Skipping reboot, restarting browser.')
script = 'stop ui'
script += '&& find /tmp/ -mindepth 1 -delete '
script += '&& start ui', ignore_status=False, verbose=False, timeout=120)
def _reboot(self):
"""Reboot the machine."""
if self._hard_reboot_on_failure:'Powering OFF the DUT: %s', self._host)
self._host.servo.get_power_state_controller().power_off()'Powering ON the DUT: %s', self._host)
def login_chrome(hosts, **kwargs):
"""Returns Chrome log-in context manager for multiple hosts. """
# TODO(pwang): Chromelogin takes 10+ seconds for it to successfully
# enter. Parallelize if this becomes a bottleneck.
instances = [ChromeLogin(host, **kwargs) for host in hosts]
for instance in instances:
yield instances
for instance in instances: