smtp: Use zerolog hooks for warns/errors expvars #90

pkg/server/smtp/loghook.go

@@ -0,0 +1,15 @@
+package smtp
+
+import "github.com/rs/zerolog"
+
+type logHook struct{}
+
+// Run implements a zerolog hook that updates the SMTP warning/error expvars.
+func (h logHook) Run(e *zerolog.Event, level zerolog.Level, msg string) {
+	switch level {
+	case zerolog.WarnLevel:
+		expWarnsTotal.Add(1)
+	case zerolog.ErrorLevel:
+		expErrorsTotal.Add(1)
+	}
+}