feat: add global tags variable to zones (#26)

README.md

@@ -36,6 +36,10 @@ module "zones" {
       comment = "myapp.com"
     }
   }
+
+  tags = {
+    ManagedBy = "Terraform"
+  }
 }
 
 module "records" {

examples/complete/main.tf

@@ -30,6 +30,10 @@ module "zones" {
       }
     }
   }
+
+  tags = {
+    ManagedBy = "Terraform"
+  }
 }
 
 module "records" {

modules/zones/README.md

@@ -21,6 +21,7 @@ This module creates Route53 zones.
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | create | Whether to create Route53 zone | `bool` | `true` | no |
+| tags | Tags added to all zones. Will take precedence over tags from the 'zones' variable | `map(any)` | `{}` | no |
 | zones | Map of Route53 zone parameters | `any` | `{}` | no |
 
 ## Outputs

modules/zones/main.tf

@@ -14,5 +14,8 @@ resource "aws_route53_zone" "this" {
     }
   }
 
-  tags = lookup(each.value, "tags", null)
+  tags = merge(
+    lookup(each.value, "tags", {}),
+    var.tags
+  )
 }

modules/zones/variables.tf

@@ -9,3 +9,9 @@ variable "zones" {
   type        = any
   default     = {}
 }
+
+variable "tags" {
+  description = "Tags added to all zones. Will take precedence over tags from the 'zones' variable"
+  type        = map(any)
+  default     = {}
+}