From 1dc5c48409f9280f3eb697c5a45d9175fab001b1 Mon Sep 17 00:00:00 2001
From: Jorge Luis Betancourt Gonzalez <jorge-luis.betancourt@trivago.com>
Date: Mon, 17 Feb 2020 16:03:10 +0100
Subject: [PATCH] Add support for reporting the number of active Goroutines

---
 collector/beat.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/collector/beat.go b/collector/beat.go
index 3caeb37..8d01a0e 100644
--- a/collector/beat.go
+++ b/collector/beat.go
@@ -36,6 +36,10 @@ type BeatStats struct {
 		MemoryTotal float64 `json:"memory_total"`
 		RSS         float64 `json:"rss"`
 	} `json:"memstats"`
+
+	Runtime struct {
+		Goroutines uint64 `json:"goroutines"`
+	} `json:"runtime"`
 }
 
 type beatCollector struct {
@@ -145,6 +149,17 @@ func NewBeatCollector(beatInfo *BeatInfo, stats *Stats) prometheus.Collector {
 				},
 				valType: prometheus.GaugeValue,
 			},
+			{
+				desc: prometheus.NewDesc(
+					prometheus.BuildFQName(beatInfo.Beat, "runtime", "goroutines"),
+					"beat.runtime.goroutines",
+					nil, nil,
+				),
+				eval: func(stats *Stats) float64 {
+					return float64(stats.Beat.Runtime.Goroutines)
+				},
+				valType: prometheus.GaugeValue,
+			},
 		},
 	}
 }