refactor: secconf chain support

secconf/codec.go

@@ -1,7 +1,5 @@
 package secconf
 
-import "errors"
-
 type Codec interface {
 	Apply(data []byte) ([]byte, error)
 }
@@ -22,29 +20,3 @@ func (c CodecFuncChain) Apply(data []byte) (out []byte, err error) {
 type CodecFunc func(data []byte) ([]byte, error)
 
 func (f CodecFunc) Apply(data []byte) ([]byte, error) { return f(data) }
-
-func newInvalidCodec(name string) Codec {
-	return CodecFunc(func(data []byte) ([]byte, error) {
-		return data, errors.New("invalid codec func for " + name)
-	})
-}
-
-var decoderRegister = make(map[string]Codec)
-var encoderRegister = make(map[string]Codec)
-
-func RegisterDecoder(name string, cf Codec) { decoderRegister[name] = cf }
-func RegisterEncoder(name string, cf Codec) { encoderRegister[name] = cf }
-
-func Decoder(name string) Codec {
-	if cf, ok := decoderRegister[name]; ok {
-		return cf
-	}
-	return newInvalidCodec(name)
-}
-
-func Encoder(name string) Codec {
-	if cf, ok := encoderRegister[name]; ok {
-		return cf
-	}
-	return newInvalidCodec(name)
-}