directly support handler in the service interface

micro.go

@@ -20,6 +20,8 @@ type Service interface {
 	Init(...Option)
 	// Options returns the current options
 	Options() Options
+	// Register the handler
+	Handle(v interface{}) error
 	// Client is used to call services
 	Client() client.Client
 	// Server is for handling requests and events

service.go

@@ -126,6 +126,12 @@ func (s *service) Stop() error {
 	return err
 }
 
+func (s *service) Handle(v interface{}) error {
+	return s.opts.Server.Handle(
+		s.opts.Server.NewHandler(h),
+	)
+}
+
 func (s *service) Run() (err error) {
 	logger := s.opts.Logger