Add experimental note and fix subcmds flags naming

Signed-off-by: Marcin Franczyk <marcin0franczyk@gmail.com>

api/nfd/v1alpha1/types.go

@@ -17,8 +17,6 @@ limitations under the License.
 package v1alpha1
 
 import (
-	"fmt"
-
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
@@ -300,13 +298,6 @@ type MatchExpression struct {
 	Value MatchValue `json:"value,omitempty"`
 }
 
-func (m MatchExpression) String() string {
-	if len(m.Value) < 1 {
-		return fmt.Sprintf("{op: %q}", m.Op)
-	}
-	return fmt.Sprintf("{op: %q, value: %q}", m.Op, m.Value)
-}
-
 // MatchOp is the match operator that is applied on values when evaluating a
 // MatchExpression.
 // +kubebuilder:validation:Enum="In";"NotIn";"InRegexp";"Exists";"DoesNotExist";"Gt";"Lt";"GtLt";"IsTrue";"IsFalse"

api/nfd/v1alpha1/utils.go

@@ -0,0 +1,29 @@
+/*
+Copyright 2024 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	"fmt"
+)
+
+// String represents the match expression as a string type.
+func (m MatchExpression) String() string {
+	if len(m.Value) < 1 {
+		return fmt.Sprintf("{op: %q}", m.Op)
+	}
+	return fmt.Sprintf("{op: %q, value: %q}", m.Op, m.Value)
+}

cmd/nfd/subcmd/compat/validate-node.go

@@ -62,7 +62,7 @@ var validateNodeCmd = &cobra.Command{
 		}
 
 		if readAccessToken && readPassword {
-			return fmt.Errorf("cannot use --read-access-token and --read-password at the same time")
+			return fmt.Errorf("cannot use --registry-token-stdin and --registry-password-stdin at the same time")
 		} else if readAccessToken {
 			accessToken, err = readStdin()
 			if err != nil {
@@ -214,9 +214,9 @@ func init() {
 	validateNodeCmd.Flags().StringVar(&platform.PlatformStr, "platform", "", "the artifact platform in the format os[/arch][/variant][:os_version]")
 	validateNodeCmd.Flags().BoolVar(&plainHTTP, "plain-http", false, "use of HTTP protocol for all registry communications")
 	validateNodeCmd.Flags().BoolVar(&outputJSON, "output-json", false, "print a JSON object")
-	validateNodeCmd.Flags().StringVar(&username, "reg-username", "", "registry username")
-	validateNodeCmd.Flags().BoolVar(&readPassword, "reg-password-stdin", false, "read registry password from stdin")
-	validateNodeCmd.Flags().BoolVar(&readAccessToken, "reg-token-stdin", false, "read registry access token from stdin")
+	validateNodeCmd.Flags().StringVar(&username, "registry-username", "", "registry username")
+	validateNodeCmd.Flags().BoolVar(&readPassword, "registry-password-stdin", false, "read registry password from stdin")
+	validateNodeCmd.Flags().BoolVar(&readAccessToken, "registry-token-stdin", false, "read registry access token from stdin")
 
 	if err := validateNodeCmd.MarkFlagRequired("image"); err != nil {
 		panic(err)

docs/reference/node-feature-client-reference.md

@@ -14,6 +14,7 @@ sort: 9
 {:toc}
 
 ---
+**The client is in the experimental `v1alpha1` version.**
 
 To quickly view available command line flags execute `nfd --help`.
 

docs/usage/image-compatibility.md

@@ -15,7 +15,9 @@ sort: 11
 
 ---
 
-## Image Compatibility (experimental: v1alpha1 version)
+## Image Compatibility
+
+**Image Compatibility is in the experimental `v1alpha1` version.**
 
 Image compatibility metadata enables container image authors to define their
 image requirements using [Node Feature Rules](./custom-resources.md#nodefeaturerule).