fix(helm): report User-Agent to kubernetes calls

Close #7719

Signed-off-by: Dong Gang <dong.gang@daocloud.io>

pkg/kube/config.go

@@ -19,8 +19,8 @@ package kube // import "helm.sh/helm/v3/pkg/kube"
 import "k8s.io/cli-runtime/pkg/genericclioptions"
 
 // GetConfig returns a Kubernetes client config.
-func GetConfig(kubeconfig, context, namespace string) *genericclioptions.ConfigFlags {
+func GetConfig(kubeconfig, context, namespace string) *ConfigFlags {
-	cf := genericclioptions.NewConfigFlags(true)
+	cf := &ConfigFlags{*genericclioptions.NewConfigFlags(true)}
 	cf.Namespace = &namespace
 	cf.Context = &context
 	cf.KubeConfig = &kubeconfig

pkg/kube/config_flags.go

@@ -0,0 +1,40 @@
+/*
+Copyright The Helm 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 kube
+
+import (
+	"helm.sh/helm/v3/internal/version"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+	"k8s.io/client-go/rest"
+)
+
+type ConfigFlags struct {
+	genericclioptions.ConfigFlags
+}
+
+// ToRESTConfig implements RESTClientGetter.
+// Returns a REST client configuration based on a provided path
+// to a .kubeconfig file, loading rules, and config flag overrides.
+// Expects the AddFlags method to have been called.
+func (f *ConfigFlags) ToRESTConfig() (*rest.Config, error) {
+	config, err := f.ToRawKubeConfigLoader().ClientConfig()
+	if err != nil {
+		return nil, err
+	}
+	config.UserAgent = version.GetUserAgent()
+	return config, err
+}