From 47e75c31c7a6bc48df98422f4839b22e9e39ef47 Mon Sep 17 00:00:00 2001
From: Vasiliy Tolstov <v.tolstov@unistack.org>
Date: Thu, 18 Feb 2021 14:41:51 +0300
Subject: [PATCH] meter: export labels len method

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
---
 meter/meter.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/meter/meter.go b/meter/meter.go
index b2824fe6..2d5944c0 100644
--- 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