X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=pkg%2Fcontrol%2Fregistry.go;h=3d70d63033f5ddc433d31fdbdd7cb93f6704a6b4;hb=47b842bf6afc45313a0edadc78f87bff06ddf2b4;hp=8f52f970a6f6cd0d2fa3069b49fece1fd70efa63;hpb=4511475f03107eb53c88545649898e3cfbcc2765;p=ric-plt%2Fsubmgr.git

diff --git a/pkg/control/registry.go b/pkg/control/registry.go
index 8f52f97..3d70d63 100644
--- a/pkg/control/registry.go
+++ b/pkg/control/registry.go
@@ -19,15 +19,107 @@
 
 package control
 
+import (
+	"gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
+	"sync"
+)
+
+type Subscription struct {
+	Seq    uint16
+	Active bool
+}
+
+func (s *Subscription) Confirmed() {
+	s.Active = true
+}
+
+func (s *Subscription) UnConfirmed() {
+	s.Active = false
+}
+
+func (s *Subscription) IsConfirmed() bool {
+	return s.Active
+}
+
 type Registry struct {
-  counter int
+	register map[uint16]*Subscription
+	counter  uint16
+	mutex    sync.Mutex
+}
+
+// This method should run as a constructor
+func (r *Registry) Initialize(seedsn uint16) {
+	r.register = make(map[uint16]*Subscription)
+	r.counter = seedsn
+}
+
+// Reserves and returns the next free sequence number
+func (r *Registry) ReserveSubscription() *Subscription {
+	// 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 {
+			r.register[sequenceNumber] = &Subscription{sequenceNumber, false}
+			return r.register[sequenceNumber]
+		}
+	}
+	return nil
+}
+
+// This function checks the validity of the given subscription id
+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
+}
+
+// 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].Confirmed()
 }
 
-func (r *Registry) GetSubscriptionId() int {
-  return r.generateId()
+//This function sets the given id as unused in the register
+func (r *Registry) setSubscriptionToUnConfirmed(sn uint16) {
+	r.mutex.Lock()
+	defer r.mutex.Unlock()
+	r.register[sn].UnConfirmed()
 }
 
-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
+	}
 }