package control
+import (
+ "fmt"
+ "gerrit.o-ran-sc.org/r/ric-plt/e2ap/pkg/e2ap"
+ "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/models"
+ "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
+ "sync"
+ "time"
+)
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+
type Registry struct {
- counter int
+ mutex sync.Mutex
+ register map[uint32]*Subscription
+ subIds []uint32
+ rtmgrClient *RtmgrClient
+}
+
+func (r *Registry) Initialize() {
+ r.register = make(map[uint32]*Subscription)
+ var i uint32
+ for i = 0; i < 65535; i++ {
+ r.subIds = append(r.subIds, i+1)
+ }
+}
+
+func (r *Registry) QueryHandler() (models.SubscriptionList, error) {
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+
+ resp := models.SubscriptionList{}
+ for _, subs := range r.register {
+ subs.mutex.Lock()
+ resp = append(resp, &models.SubscriptionData{SubscriptionID: int64(subs.ReqId.InstanceId), Meid: subs.Meid.RanName, Endpoint: subs.EpList.StringList()})
+ subs.mutex.Unlock()
+ }
+ return resp, nil
+}
+
+func (r *Registry) allocateSubs(trans *TransactionXapp, subReqMsg *e2ap.E2APSubscriptionRequest) (*Subscription, error) {
+ if len(r.subIds) > 0 {
+ subId := r.subIds[0]
+ r.subIds = r.subIds[1:]
+ if _, ok := r.register[subId]; ok == true {
+ r.subIds = append(r.subIds, subId)
+ return nil, fmt.Errorf("Registry: Failed to reserve subscription exists")
+ }
+ subs := &Subscription{
+ registry: r,
+ Meid: trans.Meid,
+ SubReqMsg: subReqMsg,
+ valid: true,
+ }
+ subs.ReqId.Id = 123
+ subs.ReqId.InstanceId = subId
+
+ if subs.EpList.AddEndpoint(trans.GetEndpoint()) == false {
+ r.subIds = append(r.subIds, subs.ReqId.InstanceId)
+ return nil, fmt.Errorf("Registry: Endpoint existing already in subscription")
+ }
+
+ return subs, nil
+ }
+ return nil, fmt.Errorf("Registry: Failed to reserve subscription no free ids")
+}
+
+func (r *Registry) findExistingSubs(trans *TransactionXapp, subReqMsg *e2ap.E2APSubscriptionRequest) *Subscription {
+
+ for _, subs := range r.register {
+ if subs.IsMergeable(trans, subReqMsg) {
+
+ //
+ // check if there has been race conditions
+ //
+ subs.mutex.Lock()
+ //subs has been set to invalid
+ if subs.valid == false {
+ subs.mutex.Unlock()
+ continue
+ }
+ // If size is zero, entry is to be deleted
+ if subs.EpList.Size() == 0 {
+ subs.mutex.Unlock()
+ continue
+ }
+ // try to add to endpointlist.
+ if subs.EpList.AddEndpoint(trans.GetEndpoint()) == false {
+ subs.mutex.Unlock()
+ continue
+ }
+ subs.mutex.Unlock()
+
+ xapp.Logger.Debug("Registry: Mergeable subs found %s for %s", subs.String(), trans.String())
+ return subs
+ }
+ }
+ return nil
+}
+
+func (r *Registry) AssignToSubscription(trans *TransactionXapp, subReqMsg *e2ap.E2APSubscriptionRequest) (*Subscription, error) {
+ var err error
+ var newAlloc bool
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+
+ //
+ // Check validity of subscription action types
+ //
+ actionType, err := r.CheckActionTypes(subReqMsg)
+ if err != nil {
+ xapp.Logger.Debug("CREATE %s", err)
+ return nil, 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.SetCachedResponse(nil, true)
+ return subs, nil
+ }
+ }
+
+ subs := r.findExistingSubs(trans, subReqMsg)
+ if subs == nil {
+ subs, err = r.allocateSubs(trans, subReqMsg)
+ if err != nil {
+ return nil, err
+ }
+ newAlloc = true
+ }
+
+ //
+ // Add to subscription
+ //
+ subs.mutex.Lock()
+ defer subs.mutex.Unlock()
+
+ epamount := subs.EpList.Size()
+
+ r.mutex.Unlock()
+ //
+ // Subscription route updates
+ //
+ if epamount == 1 {
+ subRouteAction := SubRouteInfo{subs.EpList, uint16(subs.ReqId.InstanceId)}
+ err = r.rtmgrClient.SubscriptionRequestCreate(subRouteAction)
+ } else {
+ subRouteAction := SubRouteInfo{subs.EpList, uint16(subs.ReqId.InstanceId)}
+ err = r.rtmgrClient.SubscriptionRequestUpdate(subRouteAction)
+ }
+ r.mutex.Lock()
+
+ if err != nil {
+ if newAlloc {
+ r.subIds = append(r.subIds, subs.ReqId.InstanceId)
+ }
+ return nil, 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, nil
+}
+
+func (r *Registry) CheckActionTypes(subReqMsg *e2ap.E2APSubscriptionRequest) (uint64, error) {
+ var reportFound bool = false
+ var policyFound bool = false
+ var insertFound bool = false
+
+ for _, acts := range subReqMsg.ActionSetups {
+ if acts.ActionType == e2ap.E2AP_ActionTypeReport {
+ reportFound = true
+ }
+ if acts.ActionType == e2ap.E2AP_ActionTypePolicy {
+ policyFound = true
+ }
+ if acts.ActionType == e2ap.E2AP_ActionTypeInsert {
+ insertFound = true
+ }
+ }
+ if reportFound == true && policyFound == true || reportFound == true && insertFound == true || policyFound == true && insertFound == true {
+ return e2ap.E2AP_ActionTypeInvalid, fmt.Errorf("Different action types (Report, Policy or Insert) in same RICactions-ToBeSetup-List")
+ }
+ if reportFound == true {
+ return e2ap.E2AP_ActionTypeReport, nil
+ }
+ if policyFound == true {
+ return e2ap.E2AP_ActionTypePolicy, nil
+ }
+ if insertFound == true {
+ return e2ap.E2AP_ActionTypeInsert, nil
+ }
+ return e2ap.E2AP_ActionTypeInvalid, fmt.Errorf("Invalid action type in RICactions-ToBeSetup-List")
+}
+
+// TODO: Works with concurrent calls, but check if can be improved
+func (r *Registry) RemoveFromSubscription(subs *Subscription, trans *TransactionXapp, waitRouteClean time.Duration) error {
+
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+ subs.mutex.Lock()
+ defer subs.mutex.Unlock()
+
+ delStatus := subs.EpList.DelEndpoint(trans.GetEndpoint())
+ epamount := subs.EpList.Size()
+ subId := subs.ReqId.InstanceId
+
+ if delStatus == false {
+ return nil
+ }
+
+ go func() {
+ if waitRouteClean > 0 {
+ time.Sleep(waitRouteClean)
+ }
+
+ subs.mutex.Lock()
+ defer subs.mutex.Unlock()
+ xapp.Logger.Info("CLEAN %s", subs.String())
+
+ if epamount == 0 {
+ //
+ // Subscription route delete
+ //
+ tmpList := xapp.RmrEndpointList{}
+ tmpList.AddEndpoint(trans.GetEndpoint())
+ subRouteAction := SubRouteInfo{tmpList, uint16(subId)}
+ r.rtmgrClient.SubscriptionRequestDelete(subRouteAction)
+
+ //
+ // Subscription release
+ //
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+
+ if _, ok := r.register[subId]; ok {
+ xapp.Logger.Debug("RELEASE %s", subs.String())
+ delete(r.register, subId)
+ xapp.Logger.Debug("Registry: substable=%v", r.register)
+ }
+ r.subIds = append(r.subIds, subId)
+
+ } else if subs.EpList.Size() > 0 {
+ //
+ // Subscription route updates
+ //
+ subRouteAction := SubRouteInfo{subs.EpList, uint16(subId)}
+ r.rtmgrClient.SubscriptionRequestUpdate(subRouteAction)
+ }
+
+ }()
+
+ return nil
}
-func (r *Registry) GetSubscriptionId() int {
- return r.generateId()
+func (r *Registry) GetSubscription(subId uint32) *Subscription {
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+ if _, ok := r.register[subId]; ok {
+ return r.register[subId]
+ }
+ return nil
}
-func (r *Registry) generateId() int {
- r.counter += 1
- return r.counter
+func (r *Registry) GetSubscriptionFirstMatch(subIds []uint32) (*Subscription, error) {
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+ for _, subId := range subIds {
+ if _, ok := r.register[subId]; ok {
+ return r.register[subId], nil
+ }
+ }
+ return nil, fmt.Errorf("No valid subscription found with subIds %v", subIds)
}
Code Review / ric-plt / submgr.git / blobdiff