sync once pointer

management/server/types/account.go

@@ -89,7 +89,11 @@ type Account struct {
 	Onboarding       AccountOnboarding                `gorm:"foreignKey:AccountID;references:id;constraint:OnDelete:CASCADE"`
 
 	NetworkMapCache *NetworkMapBuilder `gorm:"-"`
-	nmapInitOnce    sync.Once
+	nmapInitOnce    *sync.Once         `gorm:"-"`
+}
+
+func (a *Account) InitOnce() {
+	a.nmapInitOnce = &sync.Once{}
 }
 
 // this class is used by gorm only

management/server/types/networkmap.go

@@ -873,6 +873,9 @@ func peerIsNameserver(peer *nbpeer.Peer, nsGroup *nbdns.NameServerGroup) bool {
 }
 
 func (a *Account) initNetworkMapBuilder(validatedPeers map[string]struct{}) {
+	if a.NetworkMapCache != nil {
+		return
+	}
 	a.nmapInitOnce.Do(func() {
 		a.NetworkMapCache = NewNetworkMapBuilder(a, validatedPeers)
 	})