func buildBody(r *request.Request, v reflect.Value) { if field, ok := v.Type().FieldByName("SDKShapeTraits"); ok { if payloadName := field.Tag.Get("payload"); payloadName != "" { pfield, _ := v.Type().FieldByName(payloadName) if ptag := pfield.Tag.Get("type"); ptag != "" && ptag != "structure" { payload := reflect.Indirect(v.FieldByName(payloadName)) if payload.IsValid() && payload.Interface() != nil { switch reader := payload.Interface().(type) { case io.ReadSeeker: r.SetReaderBody(reader) case []byte: r.SetBufferBody(reader) case string: r.SetStringBody(reader) default: r.Error = awserr.New("SerializationError", "failed to encode REST request", fmt.Errorf("unknown payload type %s", payload.Type())) } } } } } }