| # Copyright (c) 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. |
| |
| """An executable function cros-update for auto-update of a CrOS host. |
| |
| The reason to create this file is to let devserver to trigger a background |
| process for CrOS auto-update. Therefore, when devserver service is restarted |
| sometimes, the CrOS auto-update process is still running and the corresponding |
| provision task won't claim failure. |
| |
| It includes two classes: |
| a. CrOSUpdateTrigger: |
| 1. Includes all logics which identify which types of update need to be |
| performed in the current DUT. |
| 2. Responsible for write current status of CrOS auto-update process into |
| progress_tracker. |
| |
| b. CrOSAUParser: |
| 1. Pre-setup the required args for CrOS auto-update. |
| 2. Parse the input parameters for cmd that runs 'cros_update.py'. |
| """ |
| |
| from __future__ import print_function |
| |
| import argparse |
| import cros_update_logging |
| import cros_update_progress |
| import logging |
| import os |
| import sys |
| |
| # only import setup_chromite before chromite import. |
| import setup_chromite # pylint: disable=unused-import |
| try: |
| from chromite.lib import auto_updater |
| from chromite.lib import remote_access |
| from chromite.lib import timeout_util |
| except ImportError as e: |
| logging.debug('chromite cannot be imported: %r', e) |
| auto_updater = None |
| remote_access = None |
| timeout_util = None |
| |
| # Timeout for CrOS auto-update process. |
| CROS_UPDATE_TIMEOUT_MIN = 30 |
| |
| # The preserved path in remote device, won't be deleted after rebooting. |
| CROS_PRESERVED_PATH = ('/mnt/stateful_partition/unencrypted/' |
| 'preserve/cros-update') |
| |
| # Standard error tmeplate to be written into status tracking log. |
| CROS_ERROR_TEMPLATE = cros_update_progress.ERROR_TAG + ' %r' |
| |
| |
| class CrOSAUParser(object): |
| """Custom command-line options parser for cros-update.""" |
| def __init__(self): |
| self.args = sys.argv[1:] |
| self.parser = argparse.ArgumentParser( |
| usage='%(prog)s [options] [control-file]') |
| self.SetupOptions() |
| self.removed_args = [] |
| |
| # parse an empty list of arguments in order to set self.options |
| # to default values. |
| self.options = self.parser.parse_args(args=[]) |
| |
| def SetupOptions(self): |
| """Setup options to call cros-update command.""" |
| self.parser.add_argument('-d', action='store', type=str, |
| dest='host_name', |
| help='host_name of a DUT') |
| self.parser.add_argument('-b', action='store', type=str, |
| dest='build_name', |
| help='build name to be auto-updated') |
| self.parser.add_argument('--static_dir', action='store', type=str, |
| dest='static_dir', |
| help='static directory of the devserver') |
| self.parser.add_argument('--force_update', action='store_true', |
| dest='force_update', default=False, |
| help=('force an update even if the version ' |
| 'installed is the same')) |
| self.parser.add_argument('--full_update', action='store_true', |
| dest='full_update', default=False, |
| help=('force a rootfs update, skip stateful ' |
| 'update')) |
| |
| def ParseArgs(self): |
| """Parse and process command line arguments.""" |
| # Positional arguments from the end of the command line will be included |
| # in the list of unknown_args. |
| self.options, unknown_args = self.parser.parse_known_args() |
| # Filter out none-positional arguments |
| while unknown_args and unknown_args[0][0] == '-': |
| self.removed_args.append(unknown_args.pop(0)) |
| # Always assume the argument has a value. |
| if unknown_args: |
| self.removed_args.append(unknown_args.pop(0)) |
| if self.removed_args: |
| logging.warn('Unknown arguments are removed from the options: %s', |
| self.removed_args) |
| |
| |
| class CrOSUpdateTrigger(object): |
| """The class for CrOS auto-updater trigger. |
| |
| This class is used for running all CrOS auto-update trigger logic. |
| """ |
| def __init__(self, host_name, build_name, static_dir, progress_tracker=None, |
| log_file=None, force_update=False, full_update=False): |
| self.host_name = host_name |
| self.build_name = build_name |
| self.static_dir = static_dir |
| self.progress_tracker = progress_tracker |
| self.log_file = log_file |
| self.force_update = force_update |
| self.full_update = full_update |
| |
| def _WriteAUStatus(self, content): |
| if self.progress_tracker: |
| self.progress_tracker.WriteStatus(content) |
| |
| def _StatefulUpdate(self, cros_updater): |
| """The detailed process in stateful update. |
| |
| Args: |
| cros_updater: The CrOS auto updater for auto-update. |
| """ |
| self._WriteAUStatus('pre-setup stateful update') |
| cros_updater.PreSetupStatefulUpdate() |
| self._WriteAUStatus('perform stateful update') |
| cros_updater.UpdateStateful() |
| self._WriteAUStatus('post-check stateful update') |
| cros_updater.PostCheckStatefulUpdate() |
| |
| def _RootfsUpdate(self, cros_updater): |
| """The detailed process in rootfs update. |
| |
| Args: |
| cros_updater: The CrOS auto updater for auto-update. |
| """ |
| self._WriteAUStatus('transfer rootfs update package') |
| cros_updater.TransferRootfsUpdate() |
| self._WriteAUStatus('pre-setup rootfs update') |
| cros_updater.PreSetupRootfsUpdate() |
| self._WriteAUStatus('rootfs update') |
| cros_updater.UpdateRootfs() |
| self._WriteAUStatus('post-check rootfs update') |
| cros_updater.PostCheckRootfsUpdate() |
| |
| def TriggerAU(self): |
| """Execute auto update for cros_host. |
| |
| The auto update includes 4 steps: |
| 1. if devserver cannot run, restore the stateful partition. |
| 2. if possible, do stateful update first, but never raise errors, except |
| for timeout_util.TimeoutError caused by system.signal. |
| 3. If required or stateful_update fails, first do rootfs update, then do |
| stateful_update. |
| 4. Post-check for the whole update. |
| """ |
| try: |
| with remote_access.ChromiumOSDeviceHandler( |
| self.host_name, port=None, |
| base_dir=CROS_PRESERVED_PATH, |
| ping=True) as device: |
| |
| logging.debug('Remote device %s is connected', self.host_name) |
| payload_dir = os.path.join(self.static_dir, self.build_name) |
| chromeos_AU = auto_updater.ChromiumOSUpdater( |
| device, self.build_name, payload_dir, |
| dev_dir=os.path.abspath(os.path.dirname(__file__)), |
| log_file=self.log_file, |
| yes=True) |
| chromeos_AU.CheckPayloads() |
| |
| self._WriteAUStatus('Transfer Devserver/Stateful Update Package') |
| chromeos_AU.TransferDevServerPackage() |
| chromeos_AU.TransferStatefulUpdate() |
| |
| restore_stateful = chromeos_AU.CheckRestoreStateful() |
| do_stateful_update = (not self.full_update) and ( |
| chromeos_AU.PreSetupCrOSUpdate() and self.force_update) |
| stateful_update_complete = False |
| logging.debug('Start CrOS update process...') |
| try: |
| if restore_stateful: |
| self._WriteAUStatus('Restore Stateful Partition') |
| chromeos_AU.RestoreStateful() |
| stateful_update_complete = True |
| else: |
| # Whether to execute stateful update depends on: |
| # a. full_update=False: No full reimage is required. |
| # b. The update version is matched to the current version, And |
| # force_update=True: Update is forced even if the version |
| # installed is the same. |
| if do_stateful_update: |
| self._StatefulUpdate(chromeos_AU) |
| stateful_update_complete = True |
| |
| except timeout_util.TimeoutError: |
| raise |
| except Exception as e: |
| logging.debug('Error happens in stateful update: %r', e) |
| |
| # Whether to execute rootfs update depends on: |
| # a. stateful update is not completed, or completed by |
| # update action 'restore_stateful'. |
| # b. force_update=True: Update is forced no matter what the current |
| # version is. Or, the update version is not matched to the current |
| # version. |
| require_rootfs_update = self.force_update or ( |
| not chromeos_AU.CheckVersion()) |
| if (not (do_stateful_update and stateful_update_complete) |
| and require_rootfs_update): |
| self._RootfsUpdate(chromeos_AU) |
| self._StatefulUpdate(chromeos_AU) |
| |
| self._WriteAUStatus('post-check for CrOS auto-update') |
| chromeos_AU.PostCheckCrOSUpdate() |
| self._WriteAUStatus(cros_update_progress.FINISHED) |
| except Exception as e: |
| logging.debug('Error happens in CrOS auto-update: %r', e) |
| self._WriteAUStatus(CROS_ERROR_TEMPLATE % e) |
| raise |
| |
| |
| def main(): |
| # Setting logging level |
| logConfig = cros_update_logging.loggingConfig() |
| logConfig.ConfigureLogging() |
| |
| # Create one cros_update_parser instance for parsing CrOS auto-update cmd. |
| AU_parser = CrOSAUParser() |
| try: |
| AU_parser.ParseArgs() |
| except Exception as e: |
| logging.error('Error in Parsing Args: %r', e) |
| raise |
| |
| if len(sys.argv) == 1: |
| AU_parser.parser.print_help() |
| sys.exit(1) |
| |
| host_name = AU_parser.options.host_name |
| build_name = AU_parser.options.build_name |
| static_dir = AU_parser.options.static_dir |
| force_update = AU_parser.options.force_update |
| full_update = AU_parser.options.full_update |
| |
| # Use process group id as the unique id in track and log files, since |
| # os.setsid is executed before the current process is run. |
| pid = os.getpid() |
| pgid = os.getpgid(pid) |
| |
| # Setting log files for CrOS auto-update process. |
| # Log file: file to record every details of CrOS auto-update process. |
| log_file = cros_update_progress.GetExecuteLogFile(host_name, pgid) |
| logging.info('Writing executing logs into file: %s', log_file) |
| logConfig.SetFileHandler(log_file) |
| |
| # Create a progress_tracker for tracking CrOS auto-update progress. |
| progress_tracker = cros_update_progress.AUProgress(host_name, pgid) |
| |
| # Create cros_update instance to run CrOS auto-update. |
| cros_updater_trigger = CrOSUpdateTrigger(host_name, build_name, static_dir, |
| progress_tracker=progress_tracker, |
| log_file=log_file, |
| force_update=force_update, |
| full_update=full_update) |
| |
| # Set timeout the cros-update process. |
| try: |
| with timeout_util.Timeout(CROS_UPDATE_TIMEOUT_MIN*60): |
| cros_updater_trigger.TriggerAU() |
| except timeout_util.TimeoutError as e: |
| error_msg = ('%s. The CrOS auto-update process is timed out, thus will be ' |
| 'terminated' % str(e)) |
| progress_tracker.WriteStatus(CROS_ERROR_TEMPLATE % error_msg) |
| |
| |
| if __name__ == '__main__': |
| main() |
