add comment for prometheusURL

Signed-off-by: Ahmad Karimi <[email protected]>
snapp-incubator · Jun 20, 2024 · b2ed096 · b2ed096
1 parent 9aa32e1
commit b2ed096
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/cmd/contour/shutdownmanager.go b/cmd/contour/shutdownmanager.go
@@ -31,6 +31,8 @@ import (
 )
 
 const (
+	// The prometheusURL is used to fetch the envoy metrics. Note that the filter
+	// value matches Envoy's raw stat names (i.e. those on the `/stats/` endpoint).
 	prometheusURL      = "http://unix/stats/prometheus?filter=http\\..*\\.downstream_cx_active"
 	healthcheckFailURL = "http://unix/healthcheck/fail"
 	prometheusStat     = "envoy_http_downstream_cx_active"