package control
+import (
+ "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
+ "sync"
+)
+
+
type Registry struct {
- counter int
+ register map[uint16]bool
+ counter uint16
+ mutex sync.Mutex
+}
+
+// This method should run as a constructor
+func (r *Registry) Initialize(seedsn uint16) {
+ r.register = make(map[uint16]bool)
+ r.counter = seedsn
+}
+
+// Reserves and returns the next free sequence number
+func (r *Registry) ReserveSequenceNumber() (uint16, bool) {
+ // Check is current SequenceNumber valid
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+ sequenceNumber := r.counter
+ if _, ok := r.register[sequenceNumber]; ok {
+ xapp.Logger.Error("Invalid SeqenceNumber sequenceNumber: %v",sequenceNumber)
+ return sequenceNumber, false
+ }
+ r.register[sequenceNumber] = false
+
+ // Allocate next SequenceNumber value
+ if r.counter == 65535 {
+ r.counter = 0
+ } else {
+ r.counter++
+ }
+ return sequenceNumber, true
+}
+
+// This function checks the validity of the given subscription id
+func (r *Registry) IsValidSequenceNumber(sn uint16) bool {
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+ xapp.Logger.Debug("Registry map: %v", r.register)
+ if _, ok := r.register[sn]; ok {
+ return true
+ }
+ return false
+}
+
+// This function sets the give id as confirmed in the register
+func (r *Registry) setSubscriptionToConfirmed(sn uint16) {
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+ r.register[sn] = true
}
-func (r *Registry) GetSubscriptionId() int {
- return r.generateId()
+//This function sets the given id as unused in the register
+func (r *Registry) deleteSubscription(sn uint16) {
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+ r.register[sn] = false
}
-func (r *Registry) generateId() int {
- r.counter += 1
- return r.counter
+//This function releases the given id as unused in the register
+func (r *Registry) releaseSequenceNumber(sn uint16) bool {
+ r.mutex.Lock()
+ defer r.mutex.Unlock()
+ if _, ok := r.register[sn]; ok {
+ delete(r.register, sn)
+ return true
+ } else {
+ return false
+ }
}