handle empty queue

cmd/woodpecker-autoscaler.go

@@ -86,10 +86,15 @@ func main() {
 					"Caller": "Main",
 				}).Fatal(fmt.Sprintf("Error checking woodpecker queue: %s", err.Error()))
 			}
-			if runningTasks <= len(ownedNodes) {
+			if runningTasks <= len(ownedNodes) && runningTasks != 0 {
 				log.WithFields(log.Fields{
 					"Caller": "Main",
 				}).Info("Still found running tasks. No agent to be removed")
+			} else {
+				if len(ownedNodes) == 0 {
+					log.WithFields(log.Fields{
+						"Caller": "Main",
+					}).Infof("Nothing running and not owning any nodes. Recheck in %d", cfg.CheckInterval)
 				} else {
 					log.WithFields(log.Fields{
 						"Caller": "Main",
@@ -107,6 +112,7 @@ func main() {
 					}
 				}
 			}
+		}
 		time.Sleep(time.Duration(cfg.CheckInterval) * time.Minute)
 	}
 }