Fix bug with setting last sync

plugins/logging/pkg/backend/sync.go

@@ -73,9 +73,13 @@ func (b *LoggingBackend) Sync(ctx context.Context, req *node.SyncRequest) (*node
 	b.nodeStatusMu.RLock()
 	defer b.nodeStatusMu.RUnlock()
 
-	err = b.ClusterDriver.SetClusterStatus(ctx, id, enabled)
-	if err != nil {
-		return nil, err
+	if enabled {
+		err = b.ClusterDriver.SetClusterStatus(ctx, id, enabled)
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		b.ClusterDriver.SetSyncTime()
 	}
 
 	var osConf *node.OpensearchConfig

plugins/logging/pkg/gateway/drivers/cluster_driver.go

@@ -27,6 +27,7 @@ type ClusterDriver interface {
 	GetInstallStatus(context.Context) InstallState
 	SetClusterStatus(context.Context, string, bool) error
 	GetClusterStatus(context.Context, string) (*capabilityv1.NodeCapabilityStatus, error)
+	SetSyncTime()
 }
 
 var (

plugins/logging/pkg/gateway/drivers/kubernetes_manager.go

@@ -29,6 +29,8 @@ import (
 
 type KubernetesManagerDriver struct {
 	KubernetesManagerDriverOptions
+
+	ephemeralSyncTime time.Time
 }
 
 type KubernetesManagerDriverOptions struct {
@@ -89,6 +91,7 @@ func NewKubernetesManagerDriver(opts ...KubernetesManagerDriverOption) (*Kuberne
 	}
 	return &KubernetesManagerDriver{
 		KubernetesManagerDriverOptions: options,
+		ephemeralSyncTime:              time.Now(),
 	}, nil
 }
 
@@ -241,6 +244,13 @@ func (d *KubernetesManagerDriver) GetClusterStatus(ctx context.Context, id strin
 		return nil, errors.ErrListingClustersFaled(err)
 	}
 
+	if len(loggingClusterList.Items) == 0 {
+		return &capabilityv1.NodeCapabilityStatus{
+			Enabled:  false,
+			LastSync: timestamppb.New(d.ephemeralSyncTime),
+		}, nil
+	}
+
 	if len(loggingClusterList.Items) != 1 {
 		return nil, errors.ErrInvalidList
 	}
@@ -250,3 +260,7 @@ func (d *KubernetesManagerDriver) GetClusterStatus(ctx context.Context, id strin
 		LastSync: timestamppb.New(loggingClusterList.Items[0].Spec.LastSync.Time),
 	}, nil
 }
+
+func (d *KubernetesManagerDriver) SetSyncTime() {
+	d.ephemeralSyncTime = time.Now()
+}