register: improvements

* change domain to namespace

* lower go.mod deps

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

register/extractor.go

@@ -1,12 +1,9 @@
 package register
 
 import (
-	"fmt"
 	"reflect"
 	"unicode"
 	"unicode/utf8"
-
-	"go.unistack.org/micro/v3/metadata"
 )
 
 // ExtractValue from reflect.Type from specified depth
@@ -38,53 +35,6 @@ func ExtractValue(v reflect.Type, d int) string {
 	return v.Name()
 }
 
-// ExtractEndpoint extract *Endpoint from reflect.Method
-func ExtractEndpoint(method reflect.Method) *Endpoint {
-	if method.PkgPath != "" {
-		return nil
-	}
-
-	var rspType, reqType reflect.Type
-	var stream bool
-	mt := method.Type
-
-	switch mt.NumIn() {
-	case 3:
-		reqType = mt.In(1)
-		rspType = mt.In(2)
-	case 4:
-		reqType = mt.In(2)
-		rspType = mt.In(3)
-	default:
-		return nil
-	}
-
-	// are we dealing with a stream?
-	switch rspType.Kind() {
-	case reflect.Func, reflect.Interface:
-		stream = true
-	}
-
-	request := ExtractValue(reqType, 0)
-	response := ExtractValue(rspType, 0)
-	if request == "" || response == "" {
-		return nil
-	}
-
-	ep := &Endpoint{
-		Name:     method.Name,
-		Request:  request,
-		Response: response,
-		Metadata: metadata.New(0),
-	}
-
-	if stream {
-		ep.Metadata.Set("stream", fmt.Sprintf("%v", stream))
-	}
-
-	return ep
-}
-
 // ExtractSubValue exctact *Value from reflect.Type
 func ExtractSubValue(typ reflect.Type) string {
 	var reqType reflect.Type