def _parse_action(element: etree._Element) -> Action:
"""Parse a NoDL action from an xml element."""
name = element.get('name')
action_type = element.get('type')
server = get_bool_attribute(element, 'server')
client = get_bool_attribute(element, 'client')
if not (server or client):
raise errors.AmbiguousActionInterfaceError(element)
policy = _parse_qos(element.find('qos'))
return Action(name=name,
action_type=action_type,
server=server,
client=client,
qos=policy)
def _parse_topic(element: etree._Element) -> Topic:
"""Parse a NoDL topic from an xml element."""
name = element.get('name')
message_type = element.get('type')
publisher = get_bool_attribute(element, 'publisher')
subscription = get_bool_attribute(element, 'subscription')
if not (publisher or subscription):
raise errors.AmbiguousTopicInterfaceError(element)
policy = _parse_qos(element.find('qos'))
return Topic(
name=name,
message_type=message_type,
publisher=publisher,
subscription=subscription,
qos=policy,
)
def _parse_service(element: etree._Element) -> Service:
"""Parse a NoDL service from an xml element."""
name = element.get('name')
service_type = element.get('type')
server = get_bool_attribute(element, 'server')
client = get_bool_attribute(element, 'client')
if not (server or client):
raise errors.AmbiguousServiceInterfaceError(element)
policy = _parse_qos(element.find('qos'))
return Service(
name=name,
service_type=service_type,
server=server,
client=client,
qos=policy,
)