def _pdr_create_rule_group(new_session,
pdr_rules) -> Optional[MsgParseOutput]:
for pdr_entry in new_session.set_gr_pdr:
# PDR Validation
if pdr_entry.HasField('pdi') == False or pdr_entry.pdr_id == 0:
offending_ie = OffendingIE(
identifier=pdr_entry.pdr_id,
version=pdr_entry.pdr_version,
)
return MsgParseOutput(offending_ie,
CauseIE.MANDATORY_IE_INCORRECT)
# If session is creted or activiated FAR_IDs cann't be 0
if len(pdr_entry.set_gr_far.ListFields()) == 0 and \
pdr_entry.pdr_state == PdrState.Value('INSTALL'):
offending_ie = OffendingIE(
identifier=pdr_entry.pdr_id,
version=pdr_entry.pdr_version,
)
return MsgParseOutput(offending_ie,
CauseIE.INVALID_FORWARDING_POLICY)
if not pdr_entry.pdi.ue_ip_adr:
return MsgParseOutput(offending_ie,
CauseIE.MANDATORY_IE_INCORRECT)
pdr_rules.update(
{pdr_entry.pdr_id: pdr_create_rule_entry(pdr_entry)})
return None
def ng_update_session_flows(self, request: SessionSet,
fut: 'Future(UPFSessionContextState)') -> UPFSessionContextState:
"""
Install PDR, FAR and QER flows for the 5G Session send by SMF
"""
logging.debug('Update 5G Session Flow for SessionID:%s, SessionVersion:%d',
request.subscriber_id, request.session_version)
# Convert message containing PDR to Named Tuple Rules.
process_pdr_rules = OrderedDict()
response = self._ng_servicer_app.ng_session_message_handler(request, process_pdr_rules)
# Failure in message processing return failure
if response.cause_info.cause_ie == CauseIE.REQUEST_ACCEPTED:
for _, pdr_entries in process_pdr_rules.items():
# Create the Tunnel
ret = self._ng_tunnel_update(pdr_entries, request.subscriber_id)
if ret == False:
offending_ie = OffendingIE(identifier=pdr_entries.pdr_id,
version=pdr_entries.pdr_version)
#Session information is filled already
response.cause_info.cause_ie = CauseIE.RULE_CREATION_OR_MODIFICATION_FAILURE
response.failure_rule_id.pdr.extend([offending_ie])
break
fut.set_result(response)
