package control
+import (
+ "fmt"
+ "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
+ "sync"
+)
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
type Registry struct {
- counter int
+ mutex sync.Mutex
+ register map[uint16]*Subscription
+ counter uint16
+ rtmgrClient *RtmgrClient
+}
+
+// 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) GetSubscriptionId() int {
- return r.generateId()
+// 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
+ 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
+ } else {
+ r.counter++
+ }
+ if _, ok := r.register[sequenceNumber]; ok == false {
+ subs := &Subscription{
+ Seq: sequenceNumber,
+ Active: false,
+ RmrEndpoint: endPoint,
+ Meid: meid,
+ Trans: nil,
+ }
+ r.register[sequenceNumber] = subs
+
+ // Update routing
+ r.mutex.Unlock()
+ err := subs.UpdateRoute(CREATE, r.rtmgrClient)
+ r.mutex.Lock()
+ if err != nil {
+ if _, ok := r.register[sequenceNumber]; ok {
+ delete(r.register, sequenceNumber)
+ }
+ return nil, err
+ }
+ return subs, nil
+ }
+ }
+ return nil, fmt.Errorf("Registry: Failed to reserves subcription. RmrEndpoint: %s, Meid: %s", endPoint, meid.RanName)
}
-func (r *Registry) generateId() int {
- r.counter += 1
- return r.counter
+func (r *Registry) GetSubscription(sn uint16) *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]
+ }
+ return nil
+}
+
+func (r *Registry) DelSubscription(sn uint16) bool {
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+ if _, ok := r.register[sn]; ok {
+ subs := r.register[sn]
+ delete(r.register, sn)
+
+ // Update routing
+ r.mutex.Unlock()
+ err := subs.UpdateRoute(DELETE, r.rtmgrClient)
+ r.mutex.Lock()
+ if err != nil {
+ xapp.Logger.Error("Registry: Failed to del route. SubId: %d, RmrEndpoint: %s", subs.Seq, subs.RmrEndpoint)
+ }
+ return true
+ }
+ return false
}