def add_mac_filter(query, value):
if utils.is_int_like(value):
return query.filter_by(id=value)
elif utils.is_valid_mac(value):
return query.filter_by(address=value)
else:
raise exception.InvalidMAC(mac=value)
def validate_and_normalize_mac(address):
"""Validate a MAC address and return normalized form.
Checks whether the supplied MAC address is formally correct and
normalize it to all lower case.
:param address: MAC address to be validated and normalized.
:returns: Normalized and validated MAC address.
:raises: InvalidMAC If the MAC address is not valid.
"""
if not is_valid_mac(address):
raise exception.InvalidMAC(mac=address)
return address.lower()
