feat: add query option

README.md

@@ -6,14 +6,14 @@ Terraform Module to create all privatelink dns zones
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.7 |
-| <a name="requirement_azurerm"></a> [azurerm](#requirement\_azurerm) | >= 4 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.9 |
+| <a name="requirement_azurerm"></a> [azurerm](#requirement\_azurerm) | >= 4, < 5.0 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| <a name="provider_azurerm"></a> [azurerm](#provider\_azurerm) | >= 4 |
+| <a name="provider_azurerm"></a> [azurerm](#provider\_azurerm) | >= 4, < 5.0 |
 
 ## Modules
 
@@ -26,15 +26,17 @@ No modules.
 | [azurerm_private_dns_zone.this](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/private_dns_zone) | resource |
 | [azurerm_private_dns_zone_virtual_network_link.this](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/private_dns_zone_virtual_network_link) | resource |
 | [azurerm_resource_group.this](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/resource_group) | resource |
+| [azurerm_private_dns_zone.this](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/data-sources/private_dns_zone) | data source |
 
 ## Inputs
 
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | <a name="input_location"></a> [location](#input\_location) | Location used for the resource group and in some Private DNS Zones | `string` | n/a | yes |
+| <a name="input_resource_group_name"></a> [resource\_group\_name](#input\_resource\_group\_name) | The name of the resource group in which to create the resources. | `string` | n/a | yes |
 | <a name="input_shortlocation"></a> [shortlocation](#input\_shortlocation) | shortcode of the location used in some Private DNS Zones | `string` | n/a | yes |
 | <a name="input_additional_zones"></a> [additional\_zones](#input\_additional\_zones) | Additional Private DNS Zones to create | `list(string)` | `[]` | no |
-| <a name="input_resource_group"></a> [resource\_group](#input\_resource\_group) | The name of the resource group in which to create the resources. | <pre>object({<br>    name = string<br>  })</pre> | <pre>{<br>  "name": null<br>}</pre> | no |
+| <a name="input_query_zones"></a> [query\_zones](#input\_query\_zones) | if set to true will query for created zones instead of creating them, used for creating vnet links | `bool` | `false` | no |
 | <a name="input_tags"></a> [tags](#input\_tags) | A map of tags to assign to the resources. | `map(string)` | `{}` | no |
 | <a name="input_virtual_network_id"></a> [virtual\_network\_id](#input\_virtual\_network\_id) | The ID of the virtual network to link the Private DNS Zones to | `string` | `null` | no |
 

examples/basic/main.tf

@@ -17,13 +17,10 @@ provider "azurerm" {
 module "private_dns_zones" {
   source = "../.."
 
-  resource_group = {
-    name = "example-rg"
-  }
-
-  location           = "West Europe"
-  shortlocation      = "weu"
-  virtual_network_id = "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/example-rg/providers/Microsoft.Network/virtualNetworks/example-vnet"
+  resource_group_name = "example-rsg"
+  location            = "West Europe"
+  shortlocation       = "weu"
+  virtual_network_id  = "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/example-rg/providers/Microsoft.Network/virtualNetworks/example-vnet"
 
   # some sql database types need a dedicated DNS zone, supply them in a seperate list, i.e.
   additional_zones = ["privatelink.a1b2c3d4e5f6.database.windows.net"]

main.tf

@@ -1,5 +1,6 @@
 resource "azurerm_resource_group" "this" {
-  name     = var.resource_group.name
+  count    = var.query_zones ? 0 : 1
+  name     = var.resource_group_name
   location = var.location
   tags = merge(
     var.tags,
@@ -9,10 +10,16 @@ resource "azurerm_resource_group" "this" {
   )
 }
 
+data "azurerm_private_dns_zone" "this" {
+  for_each            = var.query_zones ? local.private_dns_zones : {}
+  name                = each.key
+  resource_group_name = var.resource_group_name
+}
+
 resource "azurerm_private_dns_zone" "this" {
-  for_each            = local.private_dns_zones
+  for_each            = var.query_zones ? {} : local.private_dns_zones
   name                = each.key
-  resource_group_name = azurerm_resource_group.this.name
+  resource_group_name = azurerm_resource_group.this[0].name
 
   tags = merge(
     var.tags,
@@ -25,7 +32,7 @@ resource "azurerm_private_dns_zone" "this" {
 resource "azurerm_private_dns_zone_virtual_network_link" "this" {
   for_each              = var.virtual_network_id != null ? local.private_dns_zones : {}
   name                  = "${each.key}-vnet-link"
-  resource_group_name   = azurerm_resource_group.this.name
+  resource_group_name   = azurerm_resource_group.this[0].name
   private_dns_zone_name = azurerm_private_dns_zone.this[each.key].name
   virtual_network_id    = var.virtual_network_id
 

outputs.tf

@@ -1,9 +1,9 @@
 output "private_dns_zones" {
   description = "object with all created Private DNS Zones"
-  value       = azurerm_private_dns_zone.this
+  value       = var.query_zones ? data.azurerm_private_dns_zone.this : azurerm_private_dns_zone.this
 }
 
 output "resource_group_id" {
-  description = "ID of the Resource Group created by the module"  
-  value       = azurerm_resource_group.this.id
+  description = "ID of the Resource Group created by the module"
+  value       = azurerm_resource_group.this[0].id
 }

terraform.tf

@@ -1,10 +1,10 @@
 terraform {
-  required_version = ">= 1.7"
+  required_version = ">= 1.9"
 
   required_providers {
     azurerm = {
       source  = "hashicorp/azurerm"
-      version = ">= 4"
+      version = ">= 4, < 5.0"
     }
   }
-}
+}

variables.tf

@@ -1,12 +1,6 @@
-variable "resource_group" {
+variable "resource_group_name" {
   description = "The name of the resource group in which to create the resources."
-  type = object({
-    name = string
-  })
-  default = {
-    name = null
-  }
-  nullable = false
+  type        = string
 }
 
 variable "location" {
@@ -36,3 +30,9 @@ variable "virtual_network_id" {
   type        = string
   default     = null
 }
+
+variable "query_zones" {
+  description = "if set to true will query for created zones instead of creating them, used for creating vnet links"
+  type        = bool
+  default     = false
+}