def send_association_release_message(self):
# If setup is not established no need to release
if self._smf_assoc_state != UPFAssociationState.ESTABLISHED:
return
#Create Node association release message
assoc_message = UPFAssociationState(
state_version=self._smf_assoc_version + 1,
assoc_state=UPFAssociationState.RELEASE)
self._send_association_request_message(assoc_message)
self._smf_assoc_state = UPFAssociationState.RELEASE
self._smf_assoc_version = 0
def send_association_setup_message(self):
teid_range_indicate, teid_range_value =\
self._get_teid_pool_range()
#Create Node association setup message
assoc_message= \
UPFAssociationState(
state_version=self._smf_assoc_version,
assoc_state=UPFAssociationState.ESTABLISHED,
feature_set=UPFFeatureSet(f_teid=True),
recovery_time_stamp=self._recovery_timestamp.GetCurrentTime(),
ip_resource_schema=\
[UserPlaneIPResourceSchema(ipv4_address=self.config.downlink_ip,
teid_range_indication=teid_range_indicate,
teid_range=teid_range_value)]
)
self._assoc_mon_thread = hub.spawn(self._monitor_association, assoc_message)
def get_node_assoc_message(self):
node_message = UPFNodeState(upf_id=self._node_id)
teid_range_indicate, teid_range_value =\
self._get_teid_pool_range()
#Create Node association setup message
assoc_message = \
UPFAssociationState(
state_version=self._smf_assoc_version,
assoc_state=UPFAssociationState.ESTABLISHED,
feature_set=UPFFeatureSet(f_teid=True),
recovery_time_stamp=self._recovery_timestamp.GetCurrentTime(),
ip_resource_schema=\
[UserPlaneIPResourceSchema(ipv4_address=self.config.downlink_ip,
teid_range_indication=teid_range_indicate,
teid_range=teid_range_value)]
)
node_message.associaton_state.CopyFrom(assoc_message)
return node_message
