From: Dmitry Smirnov <onlyjob@debian.org>
Date: Tue, 3 Sep 2019 17:59:35 +0000 (+0100)
Subject: go-metrics_prometheus-fix_Observer
X-Git-Tag: archive/raspbian/18.09.1+dfsg1-7.1+rpi1+deb10u1^2~17
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=cd8695b8dcbadf857a225a25607134c67bb49e19;p=docker.io.git

go-metrics_prometheus-fix_Observer


Gbp-Pq: Name go-metrics_prometheus-fix_Observer.patch
---

diff --git a/go-metrics/timer.go b/go-metrics/timer.go
index e91eca76..2529e092 100644
--- a/go-metrics/timer.go
+++ b/go-metrics/timer.go
@@ -48,7 +48,7 @@ func (lt *labeledTimer) Collect(c chan<- prometheus.Metric) {
 }
 
 type timer struct {
-	m prometheus.Histogram
+	m prometheus.Observer
 }
 
 func (t *timer) Update(duration time.Duration) {
@@ -60,9 +60,14 @@ func (t *timer) UpdateSince(since time.Time) {
 }
 
 func (t *timer) Describe(c chan<- *prometheus.Desc) {
-	t.m.Describe(c)
+	c <- t.m.(prometheus.Metric).Desc()
 }
 
 func (t *timer) Collect(c chan<- prometheus.Metric) {
-	t.m.Collect(c)
+	// Are there any observers that don't implement Collector? It is really
+	// unclear what the point of the upstream change was, but we'll let this
+	// panic if we get an observer that doesn't implement collector. In this
+	// case, we should almost always see metricVec objects, so this should
+	// never panic.
+	t.m.(prometheus.Collector).Collect(c)
 }