Slightly improve logging (#152)

* Slightly improve logging

* Style fix

* Style fix

* Add option to getLocalNodeState

* Remove the line

internal/app/app.go

@@ -2202,8 +2202,10 @@ func (app *App) getLocalDaemonState() (*DaemonState, error) {
 func (app *App) getClusterStateFromDB() map[string]*NodeState {
 	hosts := app.cluster.AllNodeHosts()
 	getter := func(host string) (*NodeState, error) {
+		if host == app.cluster.Local().Host() {
+			return app.getLocalNodeState(), nil
+		}
 		ns := app.getNodeState(host)
-		ns.ShowOnlyGTIDDiff = app.config.ShowOnlyGTIDDiff
 		return ns, nil
 	}
 	clusterState, _ := getNodeStatesInParallel(hosts, getter, app.logger)

internal/app/data.go

@@ -219,6 +219,13 @@ func (ns *NodeState) String() string {
 			cr = "no"
 		}
 	}
+
+	// NodeState of replica doesn't know master gtid and always writes "master state not defined" when we calculate gtid diff
+	if ns.ShowOnlyGTIDDiff && ns.MasterState == nil {
+		return fmt.Sprintf("<ping=%s repl=%s sync=%s ro=%v offline=%v lag=%.02f du=%s cr=%s>",
+			ping, repl, sync, ns.IsReadOnly, ns.IsOffline, lag, du, cr)
+	}
+
 	return fmt.Sprintf("<ping=%s repl=%s sync=%s ro=%v offline=%v lag=%.02f du=%s cr=%s gtid=%s>",
 		ping, repl, sync, ns.IsReadOnly, ns.IsOffline, lag, du, cr, gtid)
 }