+ transaction, err := c.tracker.completeTransaction(payloadSeqNum, CREATE)
+ if err != nil {
+ xapp.Logger.Error("Failed to delete a Subscription Request transaction record due to %v", err)
+ return
+ }
+ xapp.Logger.Info("Subscription ID: %v, from address: %v:%v. Forwarding to E2 Termination...", int(payloadSeqNum), transaction.XappInstanceAddress, transaction.XappPort)
+ params.Mbuf = transaction.OrigParams.Mbuf
+ c.rmrReplyToSender(params)
+ return
+}
+
+func (act Action) String() string {
+ actions := [...]string{
+ "CREATE",
+ "MERGE",
+ "DELETE",
+ }
+
+ if act < CREATE || act > DELETE {
+ return "Unknown"
+ }
+ return actions[act]
+}
+
+func (act Action) valid() bool {
+ switch act {
+ case CREATE, MERGE, DELETE:
+ return true
+ default:
+ return false
+ }
+}
+
+func (c *Control) handleSubscriptionDeleteRequest(params *xapp.RMRParams) (err error) {
+ payloadSeqNum, err := c.e2ap.GetSubscriptionDeleteRequestSequenceNumber(params.Payload)
+ if err != nil {
+ err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error())
+ return
+ }
+ xapp.Logger.Info("Subscription Delete Request Received. RMR SUBSCRIPTION_ID: %v | PAYLOAD SEQUENCE_NUMBER: %v", params.SubId, payloadSeqNum)
+ if c.registry.IsValidSequenceNumber(payloadSeqNum) {
+ c.registry.deleteSubscription(payloadSeqNum)
+ trackErr := c.trackDeleteTransaction(params, payloadSeqNum)
+ if trackErr != nil {
+ xapp.Logger.Error("Failed to create a Subscription Delete Request transaction record due to %v", trackErr)
+ return trackErr
+ }
+ }
+ xapp.Logger.Info("Subscription ID: %v. Forwarding to E2 Termination...", int(payloadSeqNum))
+ c.rmrSend(params)
+ return
+}
+
+func (c *Control) trackDeleteTransaction(params *xapp.RMRParams, payloadSeqNum uint16) (err error) {
+ srcAddr, srcPort, err := c.rtmgrClient.SplitSource(params.Src)
+ if err != nil {
+ xapp.Logger.Error("Failed to update routing-manager about the subscription delete request with reason: %s", err)
+ }
+ xactKey := TransactionKey{payloadSeqNum, DELETE}
+ xactValue := Transaction{*srcAddr, *srcPort, params}
+ err = c.tracker.TrackTransaction(xactKey, xactValue)
+ return
+}
+
+func (c *Control) handleSubscriptionDeleteResponse(params *xapp.RMRParams) (err error) {
+ payloadSeqNum, err := c.e2ap.GetSubscriptionDeleteResponseSequenceNumber(params.Payload)
+ if err != nil {
+ err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error())
+ return
+ }
+ var transaction, _ = c.tracker.RetriveTransaction(payloadSeqNum, DELETE)
+ subRouteAction := SubRouteInfo{DELETE, transaction.XappInstanceAddress, transaction.XappPort, payloadSeqNum}
+ go c.rtmgrClient.SubscriptionRequestUpdate()
+ SubscriptionReqChan <- subRouteAction
+
+ xapp.Logger.Info("Subscription Delete Response Received. RMR SUBSCRIPTION_ID: %v | PAYLOAD SEQUENCE_NUMBER: %v", params.SubId, payloadSeqNum)
+ if c.registry.releaseSequenceNumber(payloadSeqNum) {
+ transaction, err = c.tracker.completeTransaction(payloadSeqNum, DELETE)
+ if err != nil {
+ xapp.Logger.Error("Failed to delete a Subscription Delete Request transaction record due to %v", err)
+ return
+ }
+ xapp.Logger.Info("Subscription ID: %v, from address: %v:%v. Forwarding to E2 Termination...", int(payloadSeqNum), transaction.XappInstanceAddress, transaction.XappPort)
+ //params.Src = xAddress + ":" + strconv.Itoa(int(xPort))
+ params.Mbuf = transaction.OrigParams.Mbuf
+ c.rmrReplyToSender(params)
+ }