gojsonschema and echo

validate.go

var mySchema = `{
	"$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "color": {
      "description": "The price of the product",
      "type": "string",
      "enum": ["blue", "red", "black"],
      "exclusiveMinimum": 0
    }
  },
   "required": [ "color" ]
}`

func (s *Server) objCreate(c echo.Context) error {
	schemaLoader := gojsonschema.NewStringLoader(consultaSchema)
	reqBody := []byte{}
	if c.Request().Body != nil { // Read
		reqBody, _ = ioutil.ReadAll(c.Request().Body)
	}
	c.Request().Body = ioutil.NopCloser(bytes.NewBuffer(reqBody)) // Reset

	requestLoader := gojsonschema.NewBytesLoader(reqBody)
	result, err := gojsonschema.Validate(schemaLoader, requestLoader)
	if err != nil {
		log.Println(err.Error())
	}
  	if !result.Valid() {
		validationResponse := map[string]string{}
		for _, err := range result.Errors() {
			validationResponse[err.String()] = err.Description()
		}
		return c.JSON(http.StatusBadRequest, validationResponse)
	}
  ...