From 8e490c0baeaf8b44c30eda474ec52300670da506 Mon Sep 17 00:00:00 2001
From: Adphi <philippe.adrien.nousse@gmail.com>
Date: Sat, 12 Mar 2022 00:42:36 +0100
Subject: [PATCH] metrics: add histogram support

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>
---
 interceptors/metrics/interceptors.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/interceptors/metrics/interceptors.go b/interceptors/metrics/interceptors.go
index d840a0b..0345958 100644
--- a/interceptors/metrics/interceptors.go
+++ b/interceptors/metrics/interceptors.go
@@ -22,6 +22,7 @@ type ServerInterceptors interface {
 	Registerer
 	interceptors.ServerInterceptors
 	prometheus.Collector
+	EnableHandlingTimeHistogram(opts ...grpc_prometheus.HistogramOption)
 }
 
 type ClientInterceptors interface {
@@ -33,6 +34,12 @@ type metrics struct {
 	c *grpc_prometheus.ClientMetrics
 }
 
+func (m *metrics) EnableHandlingTimeHistogram(opts ...grpc_prometheus.HistogramOption) {
+	if m.s != nil {
+		m.s.EnableHandlingTimeHistogram(opts...)
+	}
+}
+
 func (m *metrics) Describe(descs chan<- *prometheus.Desc) {
 	if m.s != nil {
 		m.s.Describe(descs)