Use any instead of interface

Signed-off-by: Daniel Weiße <dw@edgeless.systems>

cli/cloud/cloudcmd/validators.go

@@ -155,6 +155,6 @@ func (v *Validators) checkPCRs(pcrs map[uint32][]byte) error {
 	return nil
 }
 
-func writeFmt(sb *strings.Builder, fmtStr string, args ...interface{}) {
+func writeFmt(sb *strings.Builder, fmtStr string, args ...any) {
 	sb.WriteString(fmt.Sprintf(fmtStr, args...))
 }

cli/file/file.go

@@ -76,7 +76,7 @@ func (h *Handler) Write(name string, data []byte, options Option) error {
 
 // ReadJSON reads a JSON file from name and unmarshals it into the content interface.
 // The interface content must be a pointer to a JSON marchalable object.
-func (h *Handler) ReadJSON(name string, content interface{}) error {
+func (h *Handler) ReadJSON(name string, content any) error {
 	data, err := h.Read(name)
 	if err != nil {
 		return err
@@ -85,7 +85,7 @@ func (h *Handler) ReadJSON(name string, content interface{}) error {
 }
 
 // WriteJSON marshals the content interface to JSON and writes it to the path with the given name.
-func (h *Handler) WriteJSON(name string, content interface{}, options Option) error {
+func (h *Handler) WriteJSON(name string, content any, options Option) error {
 	jsonData, err := json.MarshalIndent(content, "", "\t")
 	if err != nil {
 		return err

cli/file/file_test.go

@@ -25,7 +25,7 @@ func TestReadJSON(t *testing.T) {
 		fs          afero.Fs
 		setupFs     func(fs *afero.Afero) error
 		name        string
-		wantContent interface{}
+		wantContent any
 		wantErr     bool
 	}{
 		"successful read": {
@@ -83,7 +83,7 @@ func TestWriteJSON(t *testing.T) {
 		fs      afero.Fs
 		setupFs func(af afero.Afero) error
 		name    string
-		content interface{}
+		content any
 		options Option
 		wantErr bool
 	}{

cli/status/status_test.go

@@ -142,7 +142,7 @@ func stubNewConnFunc(errStub error) func(ctx context.Context, target string, opt
 
 type stubClientConn struct{}
 
-func (c *stubClientConn) Invoke(ctx context.Context, method string, args interface{}, reply interface{}, opts ...grpc.CallOption) error {
+func (c *stubClientConn) Invoke(ctx context.Context, method string, args any, reply any, opts ...grpc.CallOption) error {
 	return nil
 }
 

coordinator/atls/atls.go

@@ -148,7 +148,7 @@ type Validator interface {
 	Validate(attDoc []byte, nonce []byte) ([]byte, error)
 }
 
-func hashPublicKey(pub interface{}) ([]byte, error) {
+func hashPublicKey(pub any) ([]byte, error) {
 	pubBytes, err := x509.MarshalPKIXPublicKey(pub)
 	if err != nil {
 		return nil, err

coordinator/attestation/gcp/validator_test.go

@@ -156,7 +156,7 @@ Y+t5OxL3kL15VzY1Ob0d5cMCAwEAAQ==
 	}
 }
 
-func mustMarshal(in interface{}, require *require.Assertions) []byte {
+func mustMarshal(in any, require *require.Assertions) []byte {
 	out, err := json.Marshal(in)
 	require.NoError(err)
 	return out

coordinator/kubernetes/k8sapi/resources/marshal.go

@@ -20,7 +20,7 @@ type Marshaler interface {
 }
 
 // MarshalK8SResources marshals every field of a struct into a k8s resource YAML.
-func MarshalK8SResources(resources interface{}) ([]byte, error) {
+func MarshalK8SResources(resources any) ([]byte, error) {
 	if resources == nil {
 		return nil, errors.New("marshal on nil called")
 	}
@@ -37,7 +37,7 @@ func MarshalK8SResources(resources interface{}) ([]byte, error) {
 		// iterate over all struct fields
 		for i := 0; i < elem.NumField(); i++ {
 			field := elem.Field(i)
-			var inter interface{}
+			var inter any
 			// check if value can be converted to interface
 			if field.CanInterface() {
 				inter = field.Addr().Interface()
@@ -65,7 +65,7 @@ func MarshalK8SResources(resources interface{}) ([]byte, error) {
 }
 
 // UnmarshalK8SResources takes YAML and converts it into a k8s resources struct.
-func UnmarshalK8SResources(data []byte, into interface{}) error {
+func UnmarshalK8SResources(data []byte, into any) error {
 	if into == nil {
 		return errors.New("unmarshal on nil called")
 	}
@@ -86,7 +86,7 @@ func UnmarshalK8SResources(data []byte, into interface{}) error {
 
 	for i := 0; i < value.NumField(); i++ {
 		field := value.Field(i)
-		var inter interface{}
+		var inter any
 		// check if value can be converted to interface
 		if !field.CanInterface() {
 			return fmt.Errorf("cannot use struct field %v as interface", i)
@@ -131,7 +131,7 @@ func splitYAML(resources []byte) ([][]byte, error) {
 	dec := yaml.NewDecoder(bytes.NewReader(resources))
 	var res [][]byte
 	for {
-		var value interface{}
+		var value any
 		err := dec.Decode(&value)
 		if errors.Is(err, io.EOF) {
 			break

coordinator/kubernetes/k8sapi/resources/marshal_test.go

@@ -13,7 +13,7 @@ import (
 
 func TestMarshalK8SResources(t *testing.T) {
 	testCases := map[string]struct {
-		resources interface{}
+		resources any
 		wantErr   bool
 		wantYAML  string
 	}{
@@ -119,8 +119,8 @@ metadata:
 func TestUnmarshalK8SResources(t *testing.T) {
 	testCases := map[string]struct {
 		data    string
-		into    interface{}
-		wantObj interface{}
+		into    any
+		wantObj any
 		wantErr bool
 	}{
 		"ConfigMap as only field can be unmarshaled": {

coordinator/pubapi/coord.go

@@ -393,7 +393,7 @@ func (a *API) assemblePeerStruct(vpnIP string, _ role.Role) (peer.Peer, error) {
 }
 
 func (a *API) newLogToCLIFunc(send func(string) error) logFunc {
-	return func(format string, v ...interface{}) {
+	return func(format string, v ...any) {
 		if err := send(fmt.Sprintf(format, v...)); err != nil {
 			a.logger.Error("logging to CLI failed", zap.Error(err))
 		}
@@ -460,4 +460,4 @@ func (a *API) triggerNodeUpdate(nodePublicIP string) error {
 	return err
 }
 
-type logFunc func(format string, v ...interface{})
+type logFunc func(format string, v ...any)

kms/kms/aws/aws_test.go

@@ -140,7 +140,7 @@ func (m *fakeAWSClient) GetParametersForImport(ctx context.Context, params *kms.
 	if err != nil {
 		return nil, errors.New("Error generating Key Pair")
 	}
-	var pki interface{} = &m.keyPairStruct.PublicKey
+	var pki any = &m.keyPairStruct.PublicKey
 	publicKeyBytes, err := x509.MarshalPKIXPublicKey(pki)
 	if err != nil {
 		return nil, err