meter: export labels len method

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
2021-02-18 14:41:51 +03:00
1 changed files with 4 additions and 0 deletions
--- a/meter/meter.go
+++ b/meter/meter.go
@@ -110,6 +110,10 @@ func (ls Labels) Append(nls Labels) Labels {
 	return ls
 }

+func (ls Labels) Len() int {
+	return len(ls.keys)
+}
+
 // LabelIter holds the
 type LabelIter struct {
 	labels Labels