Added iam for DNS managed zone to dns module

modules/dns/README.md

@@ -20,8 +20,11 @@ module "private-dns" {
     "A localhost" = { records = ["127.0.0.1"] }
     "A myhost"    = { ttl = 600, records = ["10.0.0.120"] }
   }
+  iam = {
+    "roles/dns.admin" = ["group:dns-administrators@myorg.com"]
+  }
 }
-# tftest modules=1 resources=3 inventory=private-zone.yaml
+# tftest modules=1 resources=4 inventory=private-zone.yaml
 ```
 
 ### Forwarding Zone
@@ -114,8 +117,11 @@ module "public-dns" {
   recordsets = {
     "A myhost" = { ttl = 300, records = ["127.0.0.1"] }
   }
+  iam = {
+    "roles/dns.admin" = ["group:dns-administrators@myorg.com"]
+  }
 }
-# tftest modules=1 resources=3 inventory=public-zone.yaml
+# tftest modules=1 resources=4 inventory=public-zone.yaml
 ```
 <!-- BEGIN TFDOC -->
 
@@ -124,18 +130,19 @@ module "public-dns" {
 | name | description | type | required | default |
 |---|---|:---:|:---:|:---:|
 | [domain](variables.tf#L54) | Zone domain, must end with a period. | <code>string</code> | ✓ |  |
-| [name](variables.tf#L72) | Zone name, must be unique within the project. | <code>string</code> | ✓ |  |
-| [project_id](variables.tf#L83) | Project id for the zone. | <code>string</code> | ✓ |  |
+| [name](variables.tf#L78) | Zone name, must be unique within the project. | <code>string</code> | ✓ |  |
+| [project_id](variables.tf#L89) | Project id for the zone. | <code>string</code> | ✓ |  |
 | [client_networks](variables.tf#L21) | List of VPC self links that can see this zone. | <code>list&#40;string&#41;</code> |  | <code>&#91;&#93;</code> |
 | [description](variables.tf#L28) | Domain description. | <code>string</code> |  | <code>&#34;Terraform managed.&#34;</code> |
 | [dnssec_config](variables.tf#L34) | DNSSEC configuration for this zone. | <code title="object&#40;&#123;&#10;  non_existence &#61; optional&#40;string, &#34;nsec3&#34;&#41;&#10;  state         &#61; string&#10;  key_signing_key &#61; optional&#40;object&#40;&#10;    &#123; algorithm &#61; string, key_length &#61; number &#125;&#41;,&#10;    &#123; algorithm &#61; &#34;rsasha256&#34;, key_length &#61; 2048 &#125;&#10;  &#41;&#10;  zone_signing_key &#61; optional&#40;object&#40;&#10;    &#123; algorithm &#61; string, key_length &#61; number &#125;&#41;,&#10;    &#123; algorithm &#61; &#34;rsasha256&#34;, key_length &#61; 1024 &#125;&#10;  &#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> |  | <code title="&#123;&#10;  state &#61; &#34;off&#34;&#10;&#125;">&#123;&#8230;&#125;</code> |
 | [enable_logging](variables.tf#L59) | Enable query logging for this zone. | <code>bool</code> |  | <code>false</code> |
 | [forwarders](variables.tf#L66) | Map of {IPV4_ADDRESS => FORWARDING_PATH} for 'forwarding' zone types. Path can be 'default', 'private', or null for provider default. | <code>map&#40;string&#41;</code> |  | <code>&#123;&#125;</code> |
-| [peer_network](variables.tf#L77) | Peering network self link, only valid for 'peering' zone types. | <code>string</code> |  | <code>null</code> |
-| [recordsets](variables.tf#L88) | Map of DNS recordsets in \"type name\" => {ttl, [records]} format. | <code title="map&#40;object&#40;&#123;&#10;  ttl     &#61; optional&#40;number, 300&#41;&#10;  records &#61; optional&#40;list&#40;string&#41;&#41;&#10;  geo_routing &#61; optional&#40;list&#40;object&#40;&#123;&#10;    location &#61; string&#10;    records  &#61; list&#40;string&#41;&#10;  &#125;&#41;&#41;&#41;&#10;  wrr_routing &#61; optional&#40;list&#40;object&#40;&#123;&#10;    weight  &#61; number&#10;    records &#61; list&#40;string&#41;&#10;  &#125;&#41;&#41;&#41;&#10;&#125;&#41;&#41;">map&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> |  | <code>&#123;&#125;</code> |
-| [service_directory_namespace](variables.tf#L123) | Service directory namespace id (URL), only valid for 'service-directory' zone types. | <code>string</code> |  | <code>null</code> |
-| [type](variables.tf#L129) | Type of zone to create, valid values are 'public', 'private', 'forwarding', 'peering', 'service-directory','reverse-managed'. | <code>string</code> |  | <code>&#34;private&#34;</code> |
-| [zone_create](variables.tf#L139) | Create zone. When set to false, uses a data source to reference existing zone. | <code>bool</code> |  | <code>true</code> |
+| [iam](variables.tf#L72) | IAM bindings in {ROLE => [MEMBERS]} format. | <code>map&#40;list&#40;string&#41;&#41;</code> |  | <code>null</code> |
+| [peer_network](variables.tf#L83) | Peering network self link, only valid for 'peering' zone types. | <code>string</code> |  | <code>null</code> |
+| [recordsets](variables.tf#L94) | Map of DNS recordsets in \"type name\" => {ttl, [records]} format. | <code title="map&#40;object&#40;&#123;&#10;  ttl     &#61; optional&#40;number, 300&#41;&#10;  records &#61; optional&#40;list&#40;string&#41;&#41;&#10;  geo_routing &#61; optional&#40;list&#40;object&#40;&#123;&#10;    location &#61; string&#10;    records  &#61; list&#40;string&#41;&#10;  &#125;&#41;&#41;&#41;&#10;  wrr_routing &#61; optional&#40;list&#40;object&#40;&#123;&#10;    weight  &#61; number&#10;    records &#61; list&#40;string&#41;&#10;  &#125;&#41;&#41;&#41;&#10;&#125;&#41;&#41;">map&#40;object&#40;&#123;&#8230;&#125;&#41;&#41;</code> |  | <code>&#123;&#125;</code> |
+| [service_directory_namespace](variables.tf#L129) | Service directory namespace id (URL), only valid for 'service-directory' zone types. | <code>string</code> |  | <code>null</code> |
+| [type](variables.tf#L135) | Type of zone to create, valid values are 'public', 'private', 'forwarding', 'peering', 'service-directory','reverse-managed'. | <code>string</code> |  | <code>&#34;private&#34;</code> |
+| [zone_create](variables.tf#L145) | Create zone. When set to false, uses a data source to reference existing zone. | <code>bool</code> |  | <code>true</code> |
 
 ## Outputs
 

modules/dns/main.tf

@@ -178,6 +178,16 @@ resource "google_dns_managed_zone" "public" {
   }
 }
 
+resource "google_dns_managed_zone_iam_binding" "iam_bindings" {
+  for_each = coalesce(var.iam, {})
+  project  = var.project_id
+  managed_zone = (var.type == "public"
+    ? google_dns_managed_zone.public[0].name
+  : google_dns_managed_zone.non-public[0].name)
+  role    = each.key
+  members = each.value
+}
+
 data "google_dns_keys" "dns_keys" {
   count        = var.zone_create && (var.dnssec_config == {} || var.type != "public") ? 0 : 1
   managed_zone = local.zone.id

modules/dns/variables.tf

@@ -69,6 +69,12 @@ variable "forwarders" {
   default     = {}
 }
 
+variable "iam" {
+  description = "IAM bindings in {ROLE => [MEMBERS]} format."
+  type        = map(list(string))
+  default     = null
+}
+
 variable "name" {
   description = "Zone name, must be unique within the project."
   type        = string

tests/modules/dns/examples/private-zone.yaml

@@ -48,3 +48,4 @@ values:
 counts:
   google_dns_managed_zone: 1
   google_dns_record_set: 2
+  google_dns_managed_zone_iam_binding: 1

tests/modules/dns/examples/public-zone.yaml

@@ -32,7 +32,8 @@ counts:
   google_dns_keys: 1
   google_dns_managed_zone: 1
   google_dns_record_set: 1
+  google_dns_managed_zone_iam_binding: 1
   modules: 1
-  resources: 3
+  resources: 4
 
 outputs: {}