issue-581, handling no external IPs or private cluster for PostgreSQL…

… users is implemented

controllers/clusterresources/postgresqluser_controller.go

@@ -166,8 +166,6 @@ func (r *PostgreSQLUserReconciler) Reconcile(ctx context.Context, req ctrl.Reque
 				"User has been created for a cluster. Cluster ID: %s, username: %s",
 				clusterID, newUsername)
 
-			// TODO: Add deletion user finalizers
-
 			continue
 		}
 

controllers/clusters/postgresql_controller.go

@@ -282,6 +282,49 @@ func (r *PostgreSQLReconciler) handleCreateCluster(
 	}
 
 	if pg.Spec.UserRefs != nil {
+		nodeList := &k8sCore.NodeList{}
+
+		err = r.List(ctx, nodeList, &client.ListOptions{})
+		if err != nil {
+			logger.Error(err, "Cannot list all nodes",
+				"cluster name", pg.Spec.Name,
+				"clusterID", pg.Status.ID,
+			)
+
+			r.EventRecorder.Eventf(
+				pg, models.Warning, models.CreationFailed,
+				"Fetching all nodes is failed. Reason: %v",
+				err,
+			)
+
+			return models.ReconcileRequeue
+		}
+
+		var externalIPExists bool
+		for _, node := range nodeList.Items {
+			for _, nodeAddress := range node.Status.Addresses {
+				if nodeAddress.Type == k8sCore.NodeExternalIP {
+					externalIPExists = true
+					break
+				}
+			}
+		}
+
+		if !externalIPExists || pg.Spec.PrivateNetworkCluster {
+			logger.Error(err, "Cannot create PostgreSQL user, if your cluster is private or has no external ips "+
+				"you need to configure peering and remove user references from cluster specification",
+				"cluster name", pg.Spec.Name,
+				"clusterID", pg.Status.ID,
+			)
+
+			r.EventRecorder.Eventf(
+				pg, models.Warning, models.CreationFailed,
+				"Creating PostgreSQL user has been failed. Reason: %v", err,
+			)
+
+			return models.ReconcileRequeue
+		}
+
 		err = r.startUsersCreationJob(pg)
 		if err != nil {
 			logger.Error(err, "Failed to start user PostreSQL creation job")