package control
-import "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
+import (
+ "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
+ "sync"
+)
+
+var registryMutex = &sync.Mutex{}
type Registry struct {
register map[uint16]bool
}
// Reserves and returns the next free sequence number
-func (r *Registry) ReserveSequenceNumber() uint16 {
+func (r *Registry) ReserveSequenceNumber() (uint16, bool) {
+ // Check is current SequenceNumber valid
+ registryMutex.Lock()
+ defer registryMutex.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
- r.shift()
- return sequenceNumber
+
+ // 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 {
+ registryMutex.Lock()
+ defer registryMutex.Unlock()
xapp.Logger.Debug("Registry map: %v", r.register)
if _, ok := r.register[sn]; ok {
return true
// This function sets the give id as confirmed in the register
func (r *Registry) setSubscriptionToConfirmed(sn uint16) {
+ registryMutex.Lock()
+ defer registryMutex.Unlock()
r.register[sn] = true
}
-func (r *Registry) shift() {
- if r.counter == 65535 {
- r.counter = 0
- } else {
- r.counter++
+//This function sets the given id as unused in the register
+func (r *Registry) deleteSubscription(sn uint16) {
+ registryMutex.Lock()
+ defer registryMutex.Unlock()
+ r.register[sn] = false
+}
+
+//This function releases the given id as unused in the register
+func (r *Registry) releaseSequenceNumber(sn uint16) bool {
+ registryMutex.Lock()
+ defer registryMutex.Unlock()
+ if r.register[sn] {
+ return false
+ } else {
+ delete(r.register, sn)
+ return true
}
}