Make creation of the hub optional

modules/net-ncc/main.tf

@@ -25,14 +25,15 @@ locals {
 }
 
 resource "google_network_connectivity_hub" "hub" {
+  count       = var.hub.create ? 1 : 0
   project     = var.project_id
-  name        = var.name
-  description = var.description
+  name        = var.hub.name
+  description = var.hub.description
 }
 
 resource "google_network_connectivity_spoke" "spoke-ra" {
   project  = var.project_id
-  hub      = google_network_connectivity_hub.hub.id
+  hub      = try(google_network_connectivity_hub.hub[0].name, var.hub.name)
   location = var.region
   name     = var.name
   linked_router_appliance_instances {

modules/net-ncc/variables.tf

@@ -34,10 +34,13 @@ variable "data_transfer" {
   default     = false
 }
 
-variable "description" {
-  description = "An optional description of the NCC hub."
-  type        = string
-  default     = "Terraform-managed."
+variable "hub" {
+  description = "The name of the NCC hub to create or use."
+  type = object({
+    create      = optional(bool, false)
+    name        = string
+    description = optional(string)
+  })
 }
 
 variable "ip_intf1" {
@@ -59,7 +62,7 @@ variable "keepalive" {
 }
 
 variable "name" {
-  description = "The name of the NCC hub being created."
+  description = "The name of the NCC spoke."
   type        = string
 }