metrics: add a NewLabelMap helper to create and register label maps

Updates tailscale/corp#31174 Signed-off-by: Anton Tolchanov <anton@tailscale.com>
2026-01-12 15:09:04 -05:00
parent 76fb09c6bd
commit 17b0c7bfb3
2 changed files with 10 additions and 7 deletions
@@ -99,18 +99,13 @@ var (
 )

 var (
-	tlsRequestVersion = &metrics.LabelMap{Label: "version"}
-	tlsActiveVersion  = &metrics.LabelMap{Label: "version"}
+	tlsRequestVersion = metrics.NewLabelMap("derper_tls_request_version", "version")
+	tlsActiveVersion  = metrics.NewLabelMap("gauge_derper_tls_active_version", "version")
 )

 const setecMeshKeyName = "meshkey"
 const meshKeyEnvVar = "TAILSCALE_DERPER_MESH_KEY"

-func init() {
-	expvar.Publish("derper_tls_request_version", tlsRequestVersion)
-	expvar.Publish("gauge_derper_tls_active_version", tlsActiveVersion)
-}
-
 type config struct {
 	PrivateKey key.NodePrivate
 }