def validate(value):
"""Validate and convert the input to a LocalLinkConnectionType.
:param value: A dictionary of values to validate, switch_id is a MAC
address or an OpenFlow based datapath_id, switch_info is an
optional field.
For example::
{
'switch_id': mac_or_datapath_id(),
'port_id': 'Ethernet3/1',
'switch_info': 'switch1'
}
:returns: A dictionary.
:raises: Invalid if some of the keys in the dictionary being validated
are unknown, invalid, or some required ones are missing.
"""
wtypes.DictType(wtypes.text, wtypes.text).validate(value)
keys = set(value)
# This is to workaround an issue when an API object is initialized from
# RPC object, in which dictionary fields that are set to None become
# empty dictionaries
if not keys:
return value
invalid = keys - LocalLinkConnectionType.valid_fields
if invalid:
raise exception.Invalid(_('%s are invalid keys') % (invalid))
# Check all mandatory fields are present
missing = LocalLinkConnectionType.mandatory_fields - keys
if missing:
msg = _('Missing mandatory keys: %s') % missing
raise exception.Invalid(msg)
# Check switch_id is either a valid mac address or
# OpenFlow datapath_id and normalize it.
try:
value['switch_id'] = utils.validate_and_normalize_mac(
value['switch_id'])
except exception.InvalidMAC:
try:
value['switch_id'] = utils.validate_and_normalize_datapath_id(
value['switch_id'])
except exception.InvalidDatapathID:
raise exception.InvalidSwitchID(switch_id=value['switch_id'])
return value
def __init__(self, hosts, replicas=None):
"""Create a new hash ring across the specified hosts.
:param hosts: an iterable of hosts which will be mapped.
:param replicas: number of hosts to map to each hash partition,
or len(hosts), which ever is lesser.
Default: CONF.hash_distribution_replicas
"""
if replicas is None:
replicas = CONF.hash_distribution_replicas
try:
self.hosts = set(hosts)
self.replicas = replicas if replicas <= len(hosts) else len(hosts)
except TypeError:
raise exception.Invalid(
_("Invalid hosts supplied when building HashRing."))
self._host_hashes = {}
for host in hosts:
key = str(host).encode('utf8')
key_hash = hashlib.md5(key)
for p in range(2**CONF.hash_partition_exponent):
key_hash.update(key)
hashed_key = self._hash2int(key_hash)
self._host_hashes[hashed_key] = host
# Gather the (possibly colliding) resulting hashes into a bisectable
# list.
self._partitions = sorted(self._host_hashes.keys())
def validate(value):
try:
json.dumps(value)
except TypeError:
raise exception.Invalid(_('%s is not JSON serializable') % value)
else:
return value
def _translate_plain_exception(exc_value):
if isinstance(exc_value, (glance_exc.Forbidden,
glance_exc.Unauthorized)):
return exception.NotAuthorized(exc_value)
if isinstance(exc_value, glance_exc.NotFound):
return exception.NotFound(exc_value)
if isinstance(exc_value, glance_exc.BadRequest):
return exception.Invalid(exc_value)
return exc_value
def _get_partition(self, data):
try:
if six.PY3 and data is not None:
data = data.encode('utf-8')
key_hash = hashlib.md5(data)
hashed_key = self._hash2int(key_hash)
position = bisect.bisect(self._partitions, hashed_key)
return position if position < len(self._partitions) else 0
except TypeError:
raise exception.Invalid(
_("Invalid data supplied to HashRing.get_hosts."))
def validate(value):
super(VifType, VifType).validate(value)
keys = set(value)
# Check all mandatory fields are present
missing = VifType.mandatory_fields - keys
if missing:
msg = _('Missing mandatory keys: %s') % ', '.join(list(missing))
raise exception.Invalid(msg)
UuidOrNameType.validate(value['id'])
return value
def validate(value):
try:
return strutils.bool_from_string(value, strict=True)
except ValueError as e:
# raise Invalid to return 400 (BadRequest) in the API
raise exception.Invalid(six.text_type(e))