Merge branch 'feature/PRXS-1323-AddUtil' into 'master'

Добавлена функция для получения ошибки из HTTP-ответа

See merge request perxis/perxis-go!62

pkg/transport/http.go

+package transport
+
+import (
+	"bytes"
+	"io"
+	"net/http"
+	"strings"
+
+	jsoniter "github.com/json-iterator/go"
+	"github.com/pkg/errors"
+)
+
+func DecodeError(r *http.Response) error {
+	if r.StatusCode >= 200 && r.StatusCode < 300 {
+		return nil
+	}
+
+	var buf bytes.Buffer
+	if _, err := io.Copy(&buf, io.LimitReader(r.Body, 1024)); err != nil {
+		return err
+	}
+
+	e := struct {
+		Error error `json:"error"`
+	}{}
+	if err := jsoniter.Unmarshal(buf.Bytes(), e); err != nil {
+		msg := strings.TrimSpace(buf.String())
+		if msg == "" {
+			msg = http.StatusText(r.StatusCode)
+		}
+		return errors.New(msg)
+	}
+
+	return e.Error
+}