feat: Added fix for records with terragrunt (#42)

examples/complete/README.md

@@ -2,6 +2,8 @@
 
 Configuration in this directory creates Route53 zones and records for various types of resources - S3 bucket, CloudFront distribution, static records.
 
+Also, there is a solution for Terragrunt users.
+
 ## Usage
 
 To run this example you need to execute:
@@ -35,6 +37,7 @@ Note that this example may create resources which cost money. Run `terraform des
 | <a name="module_cloudfront"></a> [cloudfront](#module\_cloudfront) | terraform-aws-modules/cloudfront/aws |  |
 | <a name="module_disabled_records"></a> [disabled\_records](#module\_disabled\_records) | ../../modules/records |  |
 | <a name="module_records"></a> [records](#module\_records) | ../../modules/records |  |
+| <a name="module_records_with_terragrunt"></a> [records\_with\_terragrunt](#module\_records\_with\_terragrunt) | ../../modules/records |  |
 | <a name="module_s3_bucket"></a> [s3\_bucket](#module\_s3\_bucket) | terraform-aws-modules/s3-bucket/aws |  |
 | <a name="module_vpc"></a> [vpc](#module\_vpc) | terraform-aws-modules/vpc/aws |  |
 | <a name="module_vpc2"></a> [vpc2](#module\_vpc2) | terraform-aws-modules/vpc/aws |  |

examples/complete/main.tf

@@ -130,6 +130,34 @@ module "records" {
   depends_on = [module.zones]
 }
 
+module "records_with_terragrunt" {
+  source = "../../modules/records"
+
+  zone_name = keys(module.zones.route53_zone_zone_id)[0]
+
+  # Terragrunt has a bug (https://github.com/gruntwork-io/terragrunt/issues/1211) that requires `records` to be wrapped with `jsonencode()`
+  records = jsonencode([
+    {
+      name = "new"
+      type = "A"
+      ttl  = 3600
+      records = [
+        "10.10.10.10",
+      ]
+    },
+    {
+      name = "s3-bucket-new"
+      type = "A"
+      alias = {
+        name    = module.s3_bucket.s3_bucket_website_domain
+        zone_id = module.s3_bucket.s3_bucket_hosted_zone_id
+      }
+    }
+  ])
+
+  depends_on = [module.zones]
+}
+
 module "disabled_records" {
   source = "../../modules/records"
 

modules/records/main.tf

 locals {
+  # terragrunt users have to provide `records` as jsonencode()'d string.
+  # See details: https://github.com/gruntwork-io/terragrunt/issues/1211
+  records = try(jsondecode(var.records), var.records)
+
   # convert from list to map with unique keys
-  recordsets = { for rs in var.records : join(" ", compact(["${rs.name} ${rs.type}", lookup(rs, "set_identifier", "")])) => rs }
+  recordsets = { for rs in local.records : join(" ", compact(["${rs.name} ${rs.type}", lookup(rs, "set_identifier", "")])) => rs }
 }
 
 data "aws_route53_zone" "this" {