Function LoadFromFile

tools/clientcmd/loader.go:350–386

LoadFromFile takes a filename and deserializes the contents into Config object

(filename string)

// LoadFromFile takes a filename and deserializes the contents into Config object
func LoadFromFile(filename string) (*clientcmdapi.Config, error) {
	kubeconfigBytes, err := ioutil.ReadFile(filename)
	if err != nil {
		return nil, err
	}
	config, err := Load(kubeconfigBytes)
	if err != nil {
		return nil, err
	}
	klog.V(6).Infoln("Config loaded from file: ", filename)

	// set LocationOfOrigin on every Cluster, User, and Context
	for key, obj := range config.AuthInfos {
		obj.LocationOfOrigin = filename
		config.AuthInfos[key] = obj
	}
	for key, obj := range config.Clusters {
		obj.LocationOfOrigin = filename
		config.Clusters[key] = obj
	}
	for key, obj := range config.Contexts {
		obj.LocationOfOrigin = filename
		config.Contexts[key] = obj
	}

	if config.AuthInfos == nil {
		config.AuthInfos = map[string]*clientcmdapi.AuthInfo{}
	}
	if config.Clusters == nil {
		config.Clusters = map[string]*clientcmdapi.Cluster{}
	}
	if config.Contexts == nil {
		config.Contexts = map[string]*clientcmdapi.Context{}
	}

	return config, nil
}

// Load takes a byte slice and deserializes the contents into Config object.
// Encapsulates deserialization without assuming the source is a file.