X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=pkg%2Fcontrol%2Fregistry.go;h=93a287af8738d6608392b0abdd7bef8c9c102764;hb=da34eecb23220659f8d519973c03d29444797998;hp=a1fe4b85f17208cd74221b69e7d4b2e938bfac0f;hpb=56e0383cad5307302f547a95755c3bcdd9e3251d;p=ric-plt%2Fsubmgr.git diff --git a/pkg/control/registry.go b/pkg/control/registry.go index a1fe4b8..93a287a 100644 --- a/pkg/control/registry.go +++ b/pkg/control/registry.go @@ -21,84 +21,409 @@ package control import ( "fmt" - "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp" "sync" + "time" + + "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" ) //----------------------------------------------------------------------------- // //----------------------------------------------------------------------------- + +type RESTSubscription struct { + xAppRmrEndPoint string + Meid string + InstanceIds []uint32 + SubReqOngoing bool + SubDelReqOngoing bool +} + +func (r *RESTSubscription) AddInstanceId(instanceId uint32) { + r.InstanceIds = append(r.InstanceIds, instanceId) +} + +func (r *RESTSubscription) SetProcessed() { + r.SubReqOngoing = false +} + +func (r *RESTSubscription) DeleteInstanceId(instanceId uint32) { + r.InstanceIds = r.InstanceIds[1:] +} + type Registry struct { - mutex sync.Mutex - register map[uint16]*Subscription - counter uint16 - rtmgrClient *RtmgrClient + mutex sync.Mutex + register map[uint32]*Subscription + subIds []uint32 + rtmgrClient *RtmgrClient + restSubscriptions map[string]*RESTSubscription +} + +func (r *Registry) Initialize() { + r.register = make(map[uint32]*Subscription) + r.restSubscriptions = make(map[string]*RESTSubscription) + + var i uint32 + for i = 1; i < 65535; i++ { + r.subIds = append(r.subIds, i) + } +} + +func (r *Registry) CreateRESTSubscription(restSubId *string, xAppRmrEndPoint *string, maid *string) (*RESTSubscription, error) { + r.mutex.Lock() + defer r.mutex.Unlock() + newRestSubscription := RESTSubscription{} + newRestSubscription.xAppRmrEndPoint = *xAppRmrEndPoint + newRestSubscription.Meid = *maid + newRestSubscription.SubReqOngoing = true + newRestSubscription.SubDelReqOngoing = false + r.restSubscriptions[*restSubId] = &newRestSubscription + xapp.Logger.Info("Registry: Created REST subscription successfully. restSubId=%v, subscriptionCount=%v, e2apCubscriptionCount=%v", *restSubId, len(r.restSubscriptions), len(r.register)) + return &newRestSubscription, nil } -// This method should run as a constructor -func (r *Registry) Initialize(seedsn uint16) { - r.register = make(map[uint16]*Subscription) - r.counter = seedsn +func (r *Registry) DeleteRESTSubscription(restSubId *string) { + r.mutex.Lock() + defer r.mutex.Unlock() + delete(r.restSubscriptions, *restSubId) + xapp.Logger.Info("Registry: Deleted REST subscription successfully. restSubId=%v, subscriptionCount=%v", *restSubId, len(r.restSubscriptions)) } -// Reserves and returns the next free sequence number -func (r *Registry) ReserveSubscription(endPoint *RmrEndpoint, meid *xapp.RMRMeid) (*Subscription, error) { - // Check is current SequenceNumber valid - // Allocate next SequenceNumber value and retry N times +func (r *Registry) GetRESTSubscription(restSubId string) (*RESTSubscription, error) { r.mutex.Lock() defer r.mutex.Unlock() - var subs *Subscription = nil - var retrytimes uint16 = 1000 - for ; subs == nil && retrytimes > 0; retrytimes-- { - sequenceNumber := r.counter - if r.counter == 65535 { - r.counter = 0 + if restSubscription, ok := r.restSubscriptions[restSubId]; ok { + // Subscription deletion is not allowed if prosessing subscription request in not ready + if restSubscription.SubDelReqOngoing == false && restSubscription.SubReqOngoing == false { + restSubscription.SubDelReqOngoing = true + r.restSubscriptions[restSubId] = restSubscription + return restSubscription, nil } else { - r.counter++ - } - if _, ok := r.register[sequenceNumber]; ok == false { - subs := &Subscription{ - registry: r, - Seq: sequenceNumber, - Active: false, - RmrEndpoint: *endPoint, - Meid: meid, - Trans: nil, + return restSubscription, fmt.Errorf("Registry: REST request is still ongoing for the endpoint=%v, restSubId=%v, SubDelReqOngoing=%v, SubReqOngoing=%v", restSubscription, restSubId, restSubscription.SubDelReqOngoing, restSubscription.SubReqOngoing) + } + return restSubscription, nil + } + return nil, fmt.Errorf("Registry: No valid subscription found with restSubId=%v", restSubId) +} + +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, ClientEndpoint: subs.EpList.StringList()}) + subs.mutex.Unlock() + } + return resp, nil +} + +func (r *Registry) allocateSubs(trans *TransactionXapp, subReqMsg *e2ap.E2APSubscriptionRequest, resetTestFlag bool) (*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, + RetryFromXapp: false, + SubRespRcvd: false, + DeleteFromDb: false, + NoRespToXapp: false, + DoNotWaitSubResp: false, + } + subs.ReqId.Id = 123 + subs.ReqId.InstanceId = subId + if resetTestFlag == true { + subs.DoNotWaitSubResp = true + } + + 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, bool) { + + 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 } - r.register[sequenceNumber] = subs + // If size is zero, entry is to be deleted + if subs.EpList.Size() == 0 { + subs.mutex.Unlock() + continue + } + // Try to add to endpointlist. Adding fails if endpoint is already in the list + if subs.EpList.AddEndpoint(trans.GetEndpoint()) == false { + subs.mutex.Unlock() + xapp.Logger.Debug("Registry: Subs with requesting endpoint found. %s for %s", subs.String(), trans.String()) + return subs, true + } + subs.mutex.Unlock() - // Update routing - r.mutex.Unlock() - err := subs.UpdateRoute(CREATE) + xapp.Logger.Debug("Registry: Mergeable subs found. %s for %s", subs.String(), trans.String()) + return subs, false + } + } + return nil, false +} + +func (r *Registry) AssignToSubscription(trans *TransactionXapp, subReqMsg *e2ap.E2APSubscriptionRequest, resetTestFlag bool, c *Control) (*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, endPointFound := r.findExistingSubs(trans, subReqMsg) + if subs == nil { + if subs, err = r.allocateSubs(trans, subReqMsg, resetTestFlag); err != nil { + return nil, 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: subscription already exists. %s", subs.String()) + return subs, nil + } + + // + // Add to subscription + // + subs.mutex.Lock() + defer subs.mutex.Unlock() + + epamount := subs.EpList.Size() + xapp.Logger.Info("AssignToSubscription subs.EpList.Size() = %v", subs.EpList.Size()) + + r.mutex.Unlock() + // + // Subscription route updates + // + if epamount == 1 { + err = r.RouteCreate(subs, c) + } else { + err = r.RouteCreateUpdate(subs, c) + } + 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, 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) RouteCreate(subs *Subscription, c *Control) error { + subRouteAction := SubRouteInfo{subs.EpList, uint16(subs.ReqId.InstanceId)} + err := r.rtmgrClient.SubscriptionRequestCreate(subRouteAction) + if err != nil { + c.UpdateCounter(cRouteCreateFail) + } + return err +} + +func (r *Registry) RouteCreateUpdate(subs *Subscription, c *Control) error { + subRouteAction := SubRouteInfo{subs.EpList, uint16(subs.ReqId.InstanceId)} + err := r.rtmgrClient.SubscriptionRequestUpdate(subRouteAction) + if err != nil { + c.UpdateCounter(cRouteCreateUpdateFail) + return err + } + c.UpdateCounter(cMergedSubscriptions) + return err +} + +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, c *Control) 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 + // + r.RouteDelete(subs, trans, c) + + // + // Subscription release + // r.mutex.Lock() - if err != nil { - if _, ok := r.register[sequenceNumber]; ok { - delete(r.register, sequenceNumber) - } - return nil, err + 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) } - return subs, nil + r.subIds = append(r.subIds, subId) + } else if subs.EpList.Size() > 0 { + // + // Subscription route update + // + r.RouteDeleteUpdate(subs, c) } + }() + + return nil +} + +func (r *Registry) RouteDelete(subs *Subscription, trans *TransactionXapp, c *Control) { + tmpList := xapp.RmrEndpointList{} + tmpList.AddEndpoint(trans.GetEndpoint()) + subRouteAction := SubRouteInfo{tmpList, uint16(subs.ReqId.InstanceId)} + if err := r.rtmgrClient.SubscriptionRequestDelete(subRouteAction); err != nil { + c.UpdateCounter(cRouteDeleteFail) + } +} + +func (r *Registry) RouteDeleteUpdate(subs *Subscription, c *Control) { + subRouteAction := SubRouteInfo{subs.EpList, uint16(subs.ReqId.InstanceId)} + if err := r.rtmgrClient.SubscriptionRequestUpdate(subRouteAction); err != nil { + c.UpdateCounter(cRouteDeleteUpdateFail) + } +} + +func (r *Registry) UpdateSubscriptionToDb(subs *Subscription, c *Control) { + r.mutex.Lock() + defer r.mutex.Unlock() + subs.mutex.Lock() + defer subs.mutex.Unlock() + + epamount := subs.EpList.Size() + if epamount == 0 { + if _, ok := r.register[subs.ReqId.InstanceId]; ok { + // Not merged subscription is being deleted + c.RemoveSubscriptionFromDb(subs) + + } + } else if subs.EpList.Size() > 0 { + // Endpoint of merged subscription is being deleted + c.WriteSubscriptionToDb(subs) + c.UpdateCounter(cUnmergedSubscriptions) } - return nil, fmt.Errorf("Registry: Failed to reserves subcription. RmrEndpoint: %s, Meid: %s", endPoint, meid.RanName) } -func (r *Registry) GetSubscription(sn uint16) *Subscription { +func (r *Registry) GetSubscription(subId uint32) *Subscription { r.mutex.Lock() defer r.mutex.Unlock() - xapp.Logger.Debug("Registry map: %v", r.register) - if _, ok := r.register[sn]; ok { - return r.register[sn] + if _, ok := r.register[subId]; ok { + return r.register[subId] } return nil } -func (r *Registry) DelSubscription(sn uint16) bool { +func (r *Registry) GetSubscriptionFirstMatch(subIds []uint32) (*Subscription, error) { r.mutex.Lock() defer r.mutex.Unlock() - if _, ok := r.register[sn]; ok { - delete(r.register, sn) - return true + for _, subId := range subIds { + if _, ok := r.register[subId]; ok { + return r.register[subId], nil + } } - return false + return nil, fmt.Errorf("No valid subscription found with subIds %v", subIds) }