add deprecated warning for node beta labels in pv/sc/rc/csi storage capacity

- (pv) deprecated label using warning for node affinity
- (storageclass)  deprecated node labels: allowedTopologies.matchLabelExpressions.key
- (CSIStorageCapacity) deprecated node labels
- (RuntimeClass) deprecated node labels

pkg/api/storage/util.go

@@ -0,0 +1,73 @@
+/*
+Copyright 2022 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 storage
+
+import (
+	"context"
+	"fmt"
+
+	"k8s.io/apimachinery/pkg/util/validation/field"
+	nodeapi "k8s.io/kubernetes/pkg/api/node"
+	"k8s.io/kubernetes/pkg/apis/storage"
+)
+
+func GetWarningsForStorageClass(ctx context.Context, sc *storage.StorageClass) []string {
+	var warnings []string
+
+	if sc != nil {
+		// use of deprecated node labels in allowedTopologies's matchLabelExpressions
+		for i, topo := range sc.AllowedTopologies {
+			for j, expression := range topo.MatchLabelExpressions {
+				if msg, deprecated := nodeapi.DeprecatedNodeLabels[expression.Key]; deprecated {
+					warnings = append(warnings, fmt.Sprintf("%s: %s", field.NewPath("allowedTopologies").Index(i).Child("matchLabelExpressions").Index(j), msg))
+				}
+			}
+		}
+	}
+
+	return warnings
+}
+
+func GetWarningsForCSIStorageCapacity(ctx context.Context, csc *storage.CSIStorageCapacity) []string {
+	var warnings []string
+
+	if csc != nil {
+		// use of deprecated node labels in allowedTopologies's matchLabelExpressions
+		for i, expression := range csc.NodeTopology.MatchExpressions {
+			if msg, deprecated := nodeapi.DeprecatedNodeLabels[expression.Key]; deprecated {
+				warnings = append(
+					warnings,
+					fmt.Sprintf(
+						"%s: %s is %s",
+						field.NewPath("nodeTopology").Child("matchExpressions").Index(i),
+						expression.Key,
+						msg,
+					),
+				)
+			}
+		}
+
+		// use of deprecated node labels in allowedTopologies's matchLabels
+		for label, _ := range csc.NodeTopology.MatchLabels {
+			if msg, deprecated := nodeapi.DeprecatedNodeLabels[label]; deprecated {
+				warnings = append(warnings, fmt.Sprintf("%s: %s", field.NewPath("nodeTopology").Child("matchLabels").Child(label), msg))
+			}
+		}
+	}
+
+	return warnings
+}