[NX-OS] Define OperSt enumeration for operational status of interfaces

This change introduces a `OperSt` enumeration in the cisco nx-os
provider that corresponds to the `l1_operSt` enum of the Cisco NX-OS
Device YANG model.

Author: felix-kaestner

internal/provider/cisco/nxos/admin.go

@@ -26,3 +26,13 @@ const (
 	AdminStOff AdminSt3 = "off"
 	AdminStOn  AdminSt3 = "on"
 )
+
+// OperSt represents the operational state of a component.
+type OperSt string
+
+const (
+	OperStUp      OperSt = "up"
+	OperStDown    OperSt = "down"
+	OperStUnknown OperSt = "unknown"
+	OperStLinkUp  OperSt = "link-up"
+)

internal/provider/cisco/nxos/intf.go

@@ -41,8 +41,8 @@ func (l *Loopback) XPath() string {
 }
 
 type LoopbackOperItems struct {
-	ID     string   `json:"-"`
-	OperSt AdminSt2 `json:"operSt"`
+	ID     string `json:"-"`
+	OperSt OperSt `json:"operSt"`
 }
 
 func (l *LoopbackOperItems) XPath() string {
@@ -97,8 +97,8 @@ func (p *PhysIf) Default() {
 }
 
 type PhysIfOperItems struct {
-	ID     string   `json:"-"`
-	OperSt AdminSt2 `json:"operSt"`
+	ID     string `json:"-"`
+	OperSt OperSt `json:"operSt"`
 }
 
 func (p *PhysIfOperItems) XPath() string {

internal/provider/cisco/nxos/provider.go

@@ -671,7 +671,7 @@ func (p *Provider) DeleteInterface(ctx context.Context, req *provider.InterfaceR
 }
 
 func (p *Provider) GetInterfaceStatus(ctx context.Context, req *provider.InterfaceRequest) (provider.InterfaceStatus, error) {
-	var operSt AdminSt2
+	var operSt OperSt
 	switch req.Interface.Spec.Type {
 	case v1alpha1.InterfaceTypePhysical:
 		phys := new(PhysIfOperItems)
@@ -694,7 +694,7 @@ func (p *Provider) GetInterfaceStatus(ctx context.Context, req *provider.Interfa
 	}
 
 	return provider.InterfaceStatus{
-		OperStatus: operSt == AdminStUp,
+		OperStatus: operSt == OperStUp,
 	}, nil
 }