Merge pull request #16859 from smarterclayton/allow_incluster_config

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pkg/client/unversioned/clientcmd/api/helpers.go

@@ -31,6 +31,14 @@ func init() {
 	redactedBytes = []byte(string(sDec))
 }
 
+// IsConfigEmpty returns true if the config is empty.
+func IsConfigEmpty(config *Config) bool {
+	return len(config.AuthInfos) == 0 && len(config.Clusters) == 0 && len(config.Contexts) == 0 &&
+		len(config.CurrentContext) == 0 &&
+		len(config.Preferences.Extensions) == 0 && !config.Preferences.Colors &&
+		len(config.Extensions) == 0
+}
+
 // MinifyConfig read the current context and uses that to keep only the relevant pieces of config
 // This is useful for making secrets based on kubeconfig files
 func MinifyConfig(config *Config) error {

pkg/client/unversioned/clientcmd/api/types.go

@@ -24,6 +24,7 @@ import (
 // Top level config objects and all values required for proper functioning are not "omitempty".  Any truly optional piece of config is allowed to be omitted.
 
 // Config holds the information needed to build connect to remote kubernetes clusters as a given user
+// IMPORTANT if you add fields to this struct, please update IsConfigEmpty()
 type Config struct {
 	// Legacy field from pkg/api/types.go TypeMeta.
 	// TODO(jlowdermilk): remove this after eliminating downstream dependencies.
@@ -44,6 +45,7 @@ type Config struct {
 	Extensions map[string]*runtime.EmbeddedObject `json:"extensions,omitempty"`
 }
 
+// IMPORTANT if you add fields to this struct, please update IsConfigEmpty()
 type Preferences struct {
 	Colors bool `json:"colors,omitempty"`
 	// Extensions holds additional information. This is useful for extenders so that reads and writes don't clobber unknown fields