+
+ //
+ // Check validity of subscription action types
+ //
+ actionType, err := r.CheckActionTypes(subReqMsg)
+ if err != nil {
+ xapp.Logger.Debug("CREATE %s", err)
+ err = fmt.Errorf("E2 content validation failed")
+ return nil, errorInfo, err
+ }
+
+ //
+ // Find possible existing Policy subscription
+ //
+ if actionType == e2ap.E2AP_ActionTypePolicy {
+ if subs, ok := r.register[trans.GetSubId()]; ok {
+ xapp.Logger.Debug("CREATE %s. Existing subscription for Policy found.", subs.String())
+ // Update message data to subscription
+ subs.SubReqMsg = subReqMsg
+ subs.PolicyUpdate = true
+ subs.SetCachedResponse(nil, true)
+ r.SetResetTestFlag(resetTestFlag, subs)
+ return subs, errorInfo, nil
+ }
+ }
+
+ subs, endPointFound := r.findExistingSubs(trans, subReqMsg)
+ if subs == nil {
+ if subs, err = r.allocateSubs(trans, subReqMsg, resetTestFlag, createRMRRoute); err != nil {
+ xapp.Logger.Error("%s", err.Error())
+ err = fmt.Errorf("subscription not allocated")
+ return nil, errorInfo, err
+ }
+ newAlloc = true
+ } else if endPointFound == true {
+ // Requesting endpoint is already present in existing subscription. This can happen if xApp is restarted.
+ subs.RetryFromXapp = true
+ xapp.Logger.Debug("CREATE subReqMsg.InstanceId=%v. Same subscription %s already exists.", subReqMsg.InstanceId, subs.String())
+ c.UpdateCounter(cDuplicateE2SubReq)
+ return subs, errorInfo, nil
+ }
+
+ //
+ // Add to subscription
+ //
+ subs.mutex.Lock()
+ defer subs.mutex.Unlock()
+
+ epamount := subs.EpList.Size()
+ xapp.Logger.Debug("AssignToSubscription subs.EpList.Size()=%v", subs.EpList.Size())
+
+ r.mutex.Unlock()
+ //
+ // Subscription route updates
+ //
+ if createRMRRoute == true {
+ if epamount == 1 {
+ errorInfo, err = r.RouteCreate(subs, c)
+ } else {
+ errorInfo, err = r.RouteCreateUpdate(subs, c)
+ }
+ } else {
+ xapp.Logger.Debug("RMR route not created: createRMRRoute=%v", createRMRRoute)
+ }
+ r.mutex.Lock()
+
+ if err != nil {
+ if newAlloc {
+ r.subIds = append(r.subIds, subs.ReqId.InstanceId)
+ }
+ // Delete already added endpoint for the request
+ subs.EpList.DelEndpoint(trans.GetEndpoint())
+ return nil, errorInfo, err
+ }
+
+ if newAlloc {
+ r.register[subs.ReqId.InstanceId] = subs
+ }
+ xapp.Logger.Debug("CREATE %s", subs.String())
+ xapp.Logger.Debug("Registry: substable=%v", r.register)
+ return subs, errorInfo, nil
+}
+
+func (r *Registry) RouteCreate(subs *Subscription, c *Control) (ErrorInfo, error) {
+ errorInfo := ErrorInfo{}
+ subRouteAction := SubRouteInfo{subs.EpList, uint16(subs.ReqId.InstanceId)}
+ err := r.rtmgrClient.SubscriptionRequestCreate(subRouteAction)
+ if err != nil {
+ if strings.Contains(err.Error(), "status 400") {
+ errorInfo.TimeoutType = models.SubscriptionInstanceTimeoutTypeRTMGRTimeout
+ } else {
+ errorInfo.ErrorSource = models.SubscriptionInstanceErrorSourceRTMGR
+ }
+ errorInfo.ErrorCause = err.Error()
+ c.UpdateCounter(cRouteCreateFail)
+ xapp.Logger.Error("%s", err.Error())
+ err = fmt.Errorf("RTMGR route create failure")
+ }
+ return errorInfo, err
+}
+
+func (r *Registry) RouteCreateUpdate(subs *Subscription, c *Control) (ErrorInfo, error) {
+ errorInfo := ErrorInfo{}
+ subRouteAction := SubRouteInfo{subs.EpList, uint16(subs.ReqId.InstanceId)}
+ err := r.rtmgrClient.SubscriptionRequestUpdate(subRouteAction)
+ if err != nil {
+ if strings.Contains(err.Error(), "status 400") {
+ errorInfo.TimeoutType = models.SubscriptionInstanceTimeoutTypeRTMGRTimeout
+ } else {
+ errorInfo.ErrorSource = models.SubscriptionInstanceErrorSourceRTMGR
+ }
+ errorInfo.ErrorCause = err.Error()
+ c.UpdateCounter(cRouteCreateUpdateFail)
+ xapp.Logger.Error("%s", err.Error())
+ err = fmt.Errorf("RTMGR route update failure")
+ return errorInfo, err