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How to use _get_consistent_execution_path method in autotest

Best Python code snippet using autotest_python

luciferlib.py

Source:luciferlib.py

...45    """46    hqe = models.HostQueueEntry.objects.get(id=hqe_id)47    hqes = hqe.job.hostqueueentry_set.all()48    try:49        _get_consistent_execution_path(hqes)50    except _ExecutionPathError:51        return True52    return False53# TODO(crbug.com/748234): This is temporary to enable toggling54# lucifer rollouts with an option.55def spawn_starting_job_handler(manager, job):56    """Spawn job_reporter to handle a job.57    Pass all arguments by keyword.58    @param manager: scheduler.drone_manager.DroneManager instance59    @param job: Job instance60    @returns: Drone instance61    """62    raise NotImplementedError63# TODO(crbug.com/748234): This is temporary to enable toggling64# lucifer rollouts with an option.65def spawn_gathering_job_handler(manager, job, autoserv_exit, pidfile_id=None):66    """Spawn job_reporter to handle a job.67    Pass all arguments by keyword.68    @param manager: scheduler.drone_manager.DroneManager instance69    @param job: Job instance70    @param autoserv_exit: autoserv exit status71    @param pidfile_id: PidfileId instance72    @returns: Drone instance73    """74    manager = _DroneManager(manager)75    if pidfile_id is None:76        drone = manager.pick_drone_to_use()77    else:78        drone = manager.get_drone_for_pidfile(pidfile_id)79    results_dir = _results_dir(manager, job)80    num_tests_failed = manager.get_num_tests_failed(pidfile_id)81    args = [82            _JOB_REPORTER_PATH,83            # General configuration84            '--jobdir', _get_jobdir(),85            '--run-job-path', _get_run_job_path(),86            '--watcher-path', _get_watcher_path(),87            # Job specific88            '--job-id', str(job.id),89            '--lucifer-level', 'GATHERING',90            '--autoserv-exit', str(autoserv_exit),91            '--need-gather',92            '--num-tests-failed', str(num_tests_failed),93            '--results-dir', results_dir,94    ]95    if _get_gcp_creds():96        args = [97                'GOOGLE_APPLICATION_CREDENTIALS=%s'98                % pipes.quote(_get_gcp_creds()),99        ] + args100    output_file = os.path.join(results_dir, 'job_reporter_output.log')101    drone.spawn(_ENV, args, output_file=output_file)102    return drone103# TODO(crbug.com/748234): This is temporary to enable toggling104# lucifer rollouts with an option.105def spawn_parsing_job_handler(manager, job, autoserv_exit, pidfile_id=None):106    """Spawn job_reporter to handle a job.107    Pass all arguments by keyword.108    @param manager: scheduler.drone_manager.DroneManager instance109    @param job: Job instance110    @param autoserv_exit: autoserv exit status111    @param pidfile_id: PidfileId instance112    @returns: Drone instance113    """114    manager = _DroneManager(manager)115    if pidfile_id is None:116        drone = manager.pick_drone_to_use()117    else:118        drone = manager.get_drone_for_pidfile(pidfile_id)119    results_dir = _results_dir(manager, job)120    args = [121            _JOB_REPORTER_PATH,122            # General configuration123            '--jobdir', _get_jobdir(),124            '--run-job-path', _get_run_job_path(),125            '--watcher-path', _get_watcher_path(),126            # Job specific127            '--job-id', str(job.id),128            '--lucifer-level', 'GATHERING',129            '--autoserv-exit', str(autoserv_exit),130            '--results-dir', results_dir,131    ]132    if _get_gcp_creds():133        args = [134                'GOOGLE_APPLICATION_CREDENTIALS=%s'135                % pipes.quote(_get_gcp_creds()),136        ] + args137    output_file = os.path.join(results_dir, 'job_reporter_output.log')138    drone.spawn(_ENV, args, output_file=output_file)139    return drone140def _get_jobdir():141    return _config.get_config_value(_SECTION, 'jobdir')142def _get_run_job_path():143    return os.path.join(_get_binaries_path(), 'lucifer_run_job')144def _get_watcher_path():145    return os.path.join(_get_binaries_path(), 'lucifer_watcher')146def _get_binaries_path():147    """Get binaries dir path from config.."""148    return _config.get_config_value(_SECTION, 'binaries_path')149def _get_gcp_creds():150  """Return path to GCP service account credentials.151  This is the empty string by default, if no credentials will be used.152  """153  return _config.get_config_value(_SECTION, 'gcp_creds', default='')154class _DroneManager(object):155    """Simplified drone API."""156    def __init__(self, old_manager):157        """Initialize instance.158        @param old_manager: old style DroneManager159        """160        self._manager = old_manager161    def get_num_tests_failed(self, pidfile_id):162        """Return the number of tests failed for autoserv by pidfile.163        @param pidfile_id: PidfileId instance.164        @returns: int (-1 if missing)165        """166        state = self._manager.get_pidfile_contents(pidfile_id)167        if state.num_tests_failed is None:168            return -1169        return state.num_tests_failed170    def get_drone_for_pidfile(self, pidfile_id):171        """Return a drone to use from a pidfile.172        @param pidfile_id: PidfileId instance.173        """174        return _wrap_drone(self._manager.get_drone_for_pidfile_id(pidfile_id))175    def pick_drone_to_use(self, num_processes=1, prefer_ssp=False):176        """Return a drone to use.177        Various options can be passed to optimize drone selection.178        @param num_processes: number of processes the drone is intended179            to run180        @param prefer_ssp: indicates whether drones supporting181            server-side packaging should be preferred.  The returned182            drone is not guaranteed to support it.183        """184        old_drone = self._manager.pick_drone_to_use(185                num_processes=num_processes,186                prefer_ssp=prefer_ssp,187        )188        return _wrap_drone(old_drone)189    def absolute_path(self, path):190        """Return absolute path for drone results.191        The returned path might be remote.192        """193        return self._manager.absolute_path(path)194def _wrap_drone(old_drone):195    """Wrap an old style drone."""196    host = old_drone._host197    if isinstance(host, local_host.LocalHost):198        return LocalDrone()199    elif isinstance(host, ssh_host.SSHHost):200        return RemoteDrone(host)201    else:202        raise TypeError('Drone has an unknown host type')203def _results_dir(manager, job):204    """Return results dir for a job.205    Path may be on a remote host.206    """207    return manager.absolute_path(_working_directory(job))208def _working_directory(job):209    return _get_consistent_execution_path(job.hostqueueentry_set.all())210def _get_consistent_execution_path(execution_entries):211    first_execution_path = execution_entries[0].execution_path()212    for execution_entry in execution_entries[1:]:213        if execution_entry.execution_path() != first_execution_path:214            raise _ExecutionPathError(215                    '%s (%s) != %s (%s)'216                    % (execution_entry.execution_path(),217                       execution_entry,218                       first_execution_path,219                       execution_entries[0]))220    return first_execution_path221class _ExecutionPathError(Exception):222    """Raised by _get_consistent_execution_path()."""223class Drone(object):224    """Simplified drone API."""225    def hostname(self):226        """Return the hostname of the drone."""227    def spawn(self, path, args, output_file):228        """Spawn an independent process.229        path must be an absolute path.  path may be on a remote machine.230        args is a list of arguments.231        The process is spawned in its own session.  It should not try to232        obtain a controlling terminal.233        The new process will have stdin opened to /dev/null and stdout,234        stderr opened to output_file.235        output_file is a pathname, but how it is interpreted is236        implementation defined, e.g., it may be a remote file....

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