def _role_already_exists(state_return, role_id):
if not state_return:
return False
role_attr_container = role_state_pb2.RoleAttributesContainer()
role_attr_container.ParseFromString(state_return[0].data)
return message_accessor.is_in_role_attributes_container(
container=role_attr_container, identifier=role_id)
def validate_identifier_is_role(state_entries, identifier, address):
"""Validate that the identifier references a Role or
raise an InvalidTransaction if that user does not exist.
Args:
state_entries (list): List of StateEntry as returned from state get.
identifier (str): The identifier of the role.
address (str): The address used to get the role container.
Raises:
InvalidTransaction: No Role with that identifier exists.
"""
try:
container = message_accessor.get_role_container(
state_accessor.get_state_entry(state_entries, address)
)
if not message_accessor.is_in_role_attributes_container(container, identifier):
raise InvalidTransaction("{} is not a role".format(identifier))
except KeyError:
raise InvalidTransaction("{} is not a role".format(identifier))