Filter read-only fields for a SET

controller/nucleus/gnmi_transport.go

@@ -130,23 +130,32 @@ func (g *Gnmi) applyDiff(ctx context.Context, payload change.Payload, path *gpb.
 			return err
 		}
 
+		setNodeOpts := []ytypes.SetNodeOpt{&ytypes.InitMissingElements{}, &ytypes.TolerateJSONInconsistencies{}}
 		for _, u := range diff.Update {
-			opts := []ytypes.SetNodeOpt{&ytypes.InitMissingElements{}, &ytypes.TolerateJSONInconsistencies{}}
-			if err := g.SetNode(schema.RootSchema(), rootCopy, u.GetPath(), u.GetVal(), opts...); err != nil {
+			rootSchema := schema.RootSchema()
+			pathString, err := ygot.PathToString(u.GetPath())
+			if err != nil {
 				return err
 			}
+			entry := rootSchema.Find(pathString)
+			if !entry.ReadOnly() {
+				if err := g.SetNode(rootSchema, rootCopy, u.GetPath(), u.GetVal(), setNodeOpts...); err != nil {
+					return err
+				}
+			}
 		}
 
 		ygot.PruneEmptyBranches(rootCopy)
 
-		opts := []ytypes.GetNodeOpt{
+		getNodeOpts := []ytypes.GetNodeOpt{
 			&ytypes.GetHandleWildcards{},
 		}
-		nodes, err := ytypes.GetNode(schema.RootSchema(), rootCopy, path, opts...)
+		nodes, err := ytypes.GetNode(schema.RootSchema(), rootCopy, path, getNodeOpts...)
 		if err != nil {
 			return err
 		}
 
+		// TODO: error handling if get nodes[0] returns a nil value
 		if len(nodes) == 0 || err != nil || util.IsValueNil(nodes[0].Data) {
 			return customerrs.PathNotFoundError{Path: path, Err: err}
 		}

controller/nucleus/principalNetworkDomain.go

@@ -349,7 +349,7 @@ func (pnd *pndImplementation) addNetworkElement(mne networkelement.NetworkElemen
 	}
 
 	if mne.IsTransportValid() {
-		_, err = pnd.Request(mne.ID(), "/interfaces")
+		_, err = pnd.Request(mne.ID(), "/")
 		if err != nil {
 			return uuid.Nil, err
 		}