fix: add region for subnets recovery

Author: Sébastien Rouaix

README.md

@@ -176,7 +176,6 @@ No modules.
 | [aws_iam_policy_document.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_session_context.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_session_context) | data source |
 | [aws_partition.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/partition) | data source |
-| [aws_region.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
 | [aws_subnet.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/subnet) | data source |
 
 ## Inputs

main.tf

@@ -1,6 +1,3 @@
-data "aws_region" "current" {
-  count = var.create ? 1 : 0
-}
 data "aws_partition" "current" {
   count = var.create ? 1 : 0
 }
@@ -15,9 +12,8 @@ data "aws_iam_session_context" "current" {
 locals {
   account_id = try(data.aws_caller_identity.current[0].account_id, "")
   partition  = try(data.aws_partition.current[0].partition, "")
-  region     = try(data.aws_region.current[0].region, "")
 
-  static_domain_arn = "arn:${local.partition}:es:${local.region}:${local.account_id}:domain/${var.domain_name}"
+  static_domain_arn = "arn:${local.partition}:es:${var.region}:${local.account_id}:domain/${var.domain_name}"
 
   tags = merge(var.tags, { terraform-aws-modules = "opensearch" })
 }
@@ -409,7 +405,7 @@ resource "aws_opensearch_outbound_connection" "this" {
 
   local_domain_info {
     owner_id    = try(each.value.local_domain_info.owner_id, local.account_id)
-    region      = try(each.value.local_domain_info.region, local.region)
+    region      = try(each.value.local_domain_info.region, var.region)
     domain_name = try(each.value.local_domain_info.domain_name, aws_opensearch_domain.this[0].domain_name)
   }
 
@@ -494,7 +490,8 @@ locals {
 data "aws_subnet" "this" {
   count = local.create_security_group ? 1 : 0
 
-  id = element(var.vpc_options.subnet_ids, 0)
+  region = var.region
+  id     = element(var.vpc_options.subnet_ids, 0)
 }
 
 resource "aws_security_group" "this" {