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How to use check_modify_host_locking method in autotest

Best Python code snippet using autotest_python

rpc_interface.py

Source:rpc_interface.py

...221    """222    rpc_utils.check_modify_host(kwargs)223    host = models.Host.smart_get(id)224    try:225        rpc_utils.check_modify_host_locking(host, kwargs)226    except model_logic.ValidationError as e:227        if not kwargs.get('force_modify_locking', False):228            raise229        logging.exception('The following exception will be ignored and lock '230                          'modification will be enforced. %s', e)231    # This is required to make `lock_time` for a host be exactly same232    # between the master and a shard.233    if kwargs.get('locked', None) and 'lock_time' not in kwargs:234        kwargs['lock_time'] = datetime.datetime.now()235    host.update_object(kwargs)236    # force_modifying_locking is not an internal field in database, remove.237    kwargs.pop('force_modify_locking', None)238    rpc_utils.fanout_rpc([host], 'modify_host_local',239                         include_hostnames=False, id=id, **kwargs)240def modify_host_local(id, **kwargs):241    """Modify host attributes in local DB.242    @param id: Host id.243    @param kwargs: key=value pairs of values to set on the host.244    """245    models.Host.smart_get(id).update_object(kwargs)246@rpc_utils.route_rpc_to_master247def modify_hosts(host_filter_data, update_data):248    """Modify local attributes of multiple hosts.249    If this is called on the master, but one of the hosts in that match the250    filters is assigned to a shard, this will call `modify_hosts_local` RPC251    to the responsible shard.252    When this is called on a shard, the shard just routes the RPC to the master253    and does nothing.254    The filters are always applied on the master, not on the shards. This means255    if the states of a host differ on the master and a shard, the state on the256    master will be used. I.e. this means:257    A host was synced to Shard 1. On Shard 1 the status of the host was set to258    'Repair Failed'.259    - A call to modify_hosts with host_filter_data={'status': 'Ready'} will260    update the host (both on the shard and on the master), because the state261    of the host as the master knows it is still 'Ready'.262    - A call to modify_hosts with host_filter_data={'status': 'Repair failed'263    will not update the host, because the filter doesn't apply on the master.264    @param host_filter_data: Filters out which hosts to modify.265    @param update_data: A dictionary with the changes to make to the hosts.266    """267    update_data = update_data.copy()268    rpc_utils.check_modify_host(update_data)269    hosts = models.Host.query_objects(host_filter_data)270    affected_shard_hostnames = set()271    affected_host_ids = []272    # Check all hosts before changing data for exception safety.273    for host in hosts:274        try:275            rpc_utils.check_modify_host_locking(host, update_data)276        except model_logic.ValidationError as e:277            if not update_data.get('force_modify_locking', False):278                raise279            logging.exception('The following exception will be ignored and '280                              'lock modification will be enforced. %s', e)281        if host.shard:282            affected_shard_hostnames.add(host.shard.rpc_hostname())283            affected_host_ids.append(host.id)284    # This is required to make `lock_time` for a host be exactly same285    # between the master and a shard.286    if update_data.get('locked', None) and 'lock_time' not in update_data:287        update_data['lock_time'] = datetime.datetime.now()288    for host in hosts:289        host.update_object(update_data)...

rpc_utils.py

Source:rpc_utils.py

...291    # beneath tasks being run on a host.292    if 'status' in update_data:293        raise model_logic.ValidationError({294            'status': 'Host status can not be modified by the frontend.'})295def check_modify_host_locking(host, update_data):296    """297    Checks when locking/unlocking has been requested if the host is already298    locked/unlocked.299    :param host: models.Host object to be modified300    :param update_data: A dictionary with the changes to make to the host.301    """302    locked = update_data.get('locked', None)303    if locked is not None:304        if locked and host.locked:305            raise model_logic.ValidationError({306                'locked': 'Host already locked by %s on %s.' %307                (host.locked_by, host.lock_time)})308        if not locked and not host.locked:309            raise model_logic.ValidationError({...

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