From 9e7682efba8d224db6ae56ebba751064652cf0b9 Mon Sep 17 00:00:00 2001
From: Joscha Henningsen <44805696+joschahenningsen@users.noreply.github.com>
Date: Mon, 24 Jul 2023 11:18:46 +0200
Subject: [PATCH] add 404 metric to edge playlists (#1087)

---
 worker/edge/edge.go    | 1 +
 worker/edge/metrics.go | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/worker/edge/edge.go b/worker/edge/edge.go
index 06b821169..bb0fa7424 100644
--- a/worker/edge/edge.go
+++ b/worker/edge/edge.go
@@ -229,6 +229,7 @@ func vodHandler(w http.ResponseWriter, r *http.Request) {
 			f, err := os.Open(path.Join(vodPath, path.Clean(r.URL.Path)))
 
 			if err != nil {
+				err404Playlists.WithLabelValues(claims.StreamID, claims.Playlist).Inc()
 				w.WriteHeader(http.StatusNotFound)
 				_, _ = w.Write([]byte("Not Found"))
 				return
diff --git a/worker/edge/metrics.go b/worker/edge/metrics.go
index 660d0304b..776139280 100644
--- a/worker/edge/metrics.go
+++ b/worker/edge/metrics.go
@@ -28,6 +28,11 @@ var (
 		Help: "The number of concurrent users (users active in the last 5 minutes)",
 	})
 
+	err404Playlists = promauto.NewCounterVec(prometheus.CounterOpts{
+		Name: "edge_404_playlists_total",
+		Help: "The total number of 404 responses per playlist",
+	}, []string{"stream", "playlist"})
+
 	usersMap = NewTTLMap(300)
 )