improve instrumentation of internal notifier

notify.go

@@ -76,7 +76,6 @@ func (n *Notifier) Send(ctx context.Context) {
 	n.c <- ctx
 }
 
-// TODO(wperron) is there a (nice) way to instrument this function?
 func (n *Notifier) NotifyFunc(ctx context.Context, f func(context.Context)) {
 	for {
 		select {
@@ -84,8 +83,11 @@ func (n *Notifier) NotifyFunc(ctx context.Context, f func(context.Context)) {
 			log.Debug().Msg("context deadline exceeded, exiting notify func")
 			return
 		case innerCtx := <-n.c:
+			innerCtx, span := tracer.Start(innerCtx, "notify_func")
 			log.Debug().Ctx(innerCtx).Msg("tick received, notifying function")
+
 			f(innerCtx)
+			span.End()
 		}
 		time.Sleep(time.Second)
 	}