feat: kubesphere 4.0 (#6115)

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

---------

Signed-off-by: ci-bot <ci-bot@kubesphere.io>
Co-authored-by: ks-ci-bot <ks-ci-bot@example.com>
Co-authored-by: joyceliu <joyceliu@yunify.com>

vendor/k8s.io/kubectl/pkg/cmd/util/helpers.go

@@ -422,6 +422,30 @@ func GetPodRunningTimeoutFlag(cmd *cobra.Command) (time.Duration, error) {
 	return timeout, nil
 }
 
+type FeatureGate string
+
+const (
+	ApplySet                FeatureGate = "KUBECTL_APPLYSET"
+	CmdPluginAsSubcommand   FeatureGate = "KUBECTL_ENABLE_CMD_SHADOW"
+	InteractiveDelete       FeatureGate = "KUBECTL_INTERACTIVE_DELETE"
+	OpenAPIV3Patch          FeatureGate = "KUBECTL_OPENAPIV3_PATCH"
+	RemoteCommandWebsockets FeatureGate = "KUBECTL_REMOTE_COMMAND_WEBSOCKETS"
+)
+
+// IsEnabled returns true iff environment variable is set to true.
+// All other cases, it returns false.
+func (f FeatureGate) IsEnabled() bool {
+	return strings.ToLower(os.Getenv(string(f))) == "true"
+}
+
+// IsDisabled returns true iff environment variable is set to false.
+// All other cases, it returns true.
+// This function is used for the cases where feature is enabled by default,
+// but it may be needed to provide a way to ability to disable this feature.
+func (f FeatureGate) IsDisabled() bool {
+	return strings.ToLower(os.Getenv(string(f))) == "false"
+}
+
 func AddValidateFlags(cmd *cobra.Command) {
 	cmd.Flags().String(
 		"validate",
@@ -499,8 +523,25 @@ func AddLabelSelectorFlagVar(cmd *cobra.Command, p *string) {
 	cmd.Flags().StringVarP(p, "selector", "l", *p, "Selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2). Matching objects must satisfy all of the specified label constraints.")
 }
 
+func AddPruningFlags(cmd *cobra.Command, prune *bool, pruneAllowlist *[]string, pruneWhitelist *[]string, all *bool, applySetRef *string) {
+	// Flags associated with the original allowlist-based alpha
+	cmd.Flags().StringArrayVar(pruneAllowlist, "prune-allowlist", *pruneAllowlist, "Overwrite the default allowlist with <group/version/kind> for --prune")
+	cmd.Flags().StringArrayVar(pruneWhitelist, "prune-whitelist", *pruneWhitelist, "Overwrite the default whitelist with <group/version/kind> for --prune") // TODO: Remove this in kubectl 1.28 or later
+	_ = cmd.Flags().MarkDeprecated("prune-whitelist", "Use --prune-allowlist instead.")
+	cmd.Flags().BoolVar(all, "all", *all, "Select all resources in the namespace of the specified resource types.")
+
+	// Flags associated with the new ApplySet-based alpha
+	if ApplySet.IsEnabled() {
+		cmd.Flags().StringVar(applySetRef, "applyset", *applySetRef, "[alpha] The name of the ApplySet that tracks which resources are being managed, for the purposes of determining what to prune. Live resources that are part of the ApplySet but have been removed from the provided configs will be deleted. Format: [RESOURCE][.GROUP]/NAME. A Secret will be used if no resource or group is specified.")
+		cmd.Flags().BoolVar(prune, "prune", *prune, "Automatically delete previously applied resource objects that do not appear in the provided configs. For alpha1, use with either -l or --all. For alpha2, use with --applyset.")
+	} else {
+		// different docs for the shared --prune flag if only alpha1 is enabled
+		cmd.Flags().BoolVar(prune, "prune", *prune, "Automatically delete resource objects, that do not appear in the configs and are created by either apply or create --save-config. Should be used with either -l or --all.")
+	}
+}
+
 func AddSubresourceFlags(cmd *cobra.Command, subresource *string, usage string, allowedSubresources ...string) {
-	cmd.Flags().StringVar(subresource, "subresource", "", fmt.Sprintf("%s Must be one of %v. This flag is alpha and may change in the future.", usage, allowedSubresources))
+	cmd.Flags().StringVar(subresource, "subresource", "", fmt.Sprintf("%s Must be one of %v. This flag is beta and may change in the future.", usage, allowedSubresources))
 	CheckErr(cmd.RegisterFlagCompletionFunc("subresource", func(*cobra.Command, []string, string) ([]string, cobra.ShellCompDirective) {
 		return allowedSubresources, cobra.ShellCompDirectiveNoFileComp
 	}))