mv non-core components to extended repo

pkg/auth/auth.go

@@ -5,20 +5,20 @@ type Authenticator interface {
 	Authenticate(user, password string) bool
 }
 
-// LocalAuthenticator is an Authenticator that authenticates client by local key-value pairs.
-type MapAuthenticator struct {
+// authenticator is an Authenticator that authenticates client by key-value pairs.
+type authenticator struct {
 	kvs map[string]string
 }
 
-// NewMapAuthenticator creates an Authenticator that authenticates client by local infos.
-func NewMapAuthenticator(kvs map[string]string) Authenticator {
-	return &MapAuthenticator{
+// NewAuthenticator creates an Authenticator that authenticates client by pre-defined user mapping.
+func NewAuthenticator(kvs map[string]string) Authenticator {
+	return &authenticator{
 		kvs: kvs,
 	}
 }
 
 // Authenticate checks the validity of the provided user-password pair.
-func (au *MapAuthenticator) Authenticate(user, password string) bool {
+func (au *authenticator) Authenticate(user, password string) bool {
 	if au == nil || len(au.kvs) == 0 {
 		return true
 	}