From 1f77f320a72f5f4bfd2e224ff1bd7bd8d98bc36c Mon Sep 17 00:00:00 2001
From: Marco Pracucci <marco@pracucci.com>
Date: Fri, 6 Mar 2020 15:09:30 +0100
Subject: [PATCH] Fixed dispatcher metrics registration

Signed-off-by: Marco Pracucci <marco@pracucci.com>
---
 dispatch/dispatch.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dispatch/dispatch.go b/dispatch/dispatch.go
index a024866d..88450b05 100644
--- a/dispatch/dispatch.go
+++ b/dispatch/dispatch.go
@@ -53,7 +53,11 @@ func NewDispatcherMetrics(r prometheus.Registerer) *DispatcherMetrics {
 			},
 		),
 	}
-	prometheus.MustRegister(m.aggrGroups, m.processingDuration)
+
+	if r != nil {
+		r.MustRegister(m.aggrGroups, m.processingDuration)
+	}
+
 	return &m
 }