store download & add key

cmd/dkl-local-server/cas-cleaner.go

@@ -12,13 +12,15 @@ var (
 )
 
 func casCleaner() {
-	for {
+	for range time.Tick(*cacheCleanDelay) {
+		if !wPublicState.Get().Store.Open {
+			continue
+		}
+
 		err := cleanCAS()
 		if err != nil {
 			log.Print("warn: couldn't clean cache: ", err)
 		}
-
-		time.Sleep(*cacheCleanDelay)
 	}
 }