Adding upstream version 0.8.9.

Signed-off-by: Daniel Baumann <daniel@debian.org>

pkg/util/jsonclient/error.go

@@ -0,0 +1,37 @@
+package jsonclient
+
+import (
+	"errors"
+	"fmt"
+)
+
+// Error contains additional HTTP/JSON details.
+type Error struct {
+	StatusCode int
+	Body       string
+	err        error
+}
+
+// Error returns the string representation of the error.
+func (je Error) Error() string {
+	return je.String()
+}
+
+// String provides a human-readable description of the error.
+func (je Error) String() string {
+	if je.err == nil {
+		return fmt.Sprintf("unknown error (HTTP %v)", je.StatusCode)
+	}
+
+	return je.err.Error()
+}
+
+// ErrorBody extracts the request body from an error if it’s a jsonclient.Error.
+func ErrorBody(e error) string {
+	var jsonError Error
+	if errors.As(e, &jsonError) {
+		return jsonError.Body
+	}
+
+	return ""
+}