feat: add optional region override support for AWS provider v6

Author: nacholiya

README.md

@@ -446,6 +446,7 @@ No modules.
 | <a name="input_preferred_availability_zones"></a> [preferred\_availability\_zones](#input\_preferred\_availability\_zones) | List of the Availability Zones in which cache nodes are created | `list(string)` | `[]` | no |
 | <a name="input_preferred_cache_cluster_azs"></a> [preferred\_cache\_cluster\_azs](#input\_preferred\_cache\_cluster\_azs) | List of EC2 availability zones in which the replication group's cache clusters will be created. The order of the availability zones in the list is considered. The first item in the list will be the primary node. Ignored when updating | `list(string)` | `[]` | no |
 | <a name="input_preferred_outpost_arn"></a> [preferred\_outpost\_arn](#input\_preferred\_outpost\_arn) | (Required if `outpost_mode` is specified) The outpost ARN in which the cache cluster will be created | `string` | `null` | no |
+| <a name="input_region"></a> [region](#input\_region) | AWS region where the resources will be managed. | `string` | `null` | no |
 | <a name="input_replicas_per_node_group"></a> [replicas\_per\_node\_group](#input\_replicas\_per\_node\_group) | Number of replica nodes in each node group. Changing this number will trigger a resizing operation before other settings modifications. Valid values are 0 to 5 | `number` | `null` | no |
 | <a name="input_replication_group_id"></a> [replication\_group\_id](#input\_replication\_group\_id) | Replication group identifier. When `create_replication_group` is set to `true`, this is the ID assigned to the replication group created. When `create_replication_group` is set to `false`, this is the ID of an externally created replication group | `string` | `null` | no |
 | <a name="input_security_group_description"></a> [security\_group\_description](#input\_security\_group\_description) | Description of the security group created | `string` | `null` | no |

main.tf

@@ -13,7 +13,8 @@ locals {
 ################################################################################
 
 resource "aws_elasticache_cluster" "this" {
-  count = var.create && var.create_cluster ? 1 : 0
+  region = var.region
+  count  = var.create && var.create_cluster ? 1 : 0
 
   apply_immediately          = var.apply_immediately
   auto_minor_version_upgrade = var.auto_minor_version_upgrade
@@ -74,7 +75,8 @@ locals {
 }
 
 resource "aws_elasticache_replication_group" "this" {
-  count = var.create && var.create_replication_group && !local.create_global_replication_group ? 1 : 0
+  region = var.region
+  count  = var.create && var.create_replication_group && !local.create_global_replication_group ? 1 : 0
 
   apply_immediately           = var.apply_immediately
   at_rest_encryption_enabled  = var.at_rest_encryption_enabled
@@ -152,7 +154,8 @@ resource "aws_elasticache_global_replication_group" "this" {
 }
 
 resource "aws_elasticache_replication_group" "global" {
-  count = var.create && var.create_replication_group && local.create_global_replication_group ? 1 : 0
+  region = var.region
+  count  = var.create && var.create_replication_group && local.create_global_replication_group ? 1 : 0
 
   apply_immediately           = var.apply_immediately
   at_rest_encryption_enabled  = var.create_secondary_global_replication_group ? null : var.at_rest_encryption_enabled
@@ -219,6 +222,7 @@ locals {
 }
 
 resource "aws_cloudwatch_log_group" "this" {
+  region   = var.region
   for_each = { for k, v in var.log_delivery_configuration : k => v if local.create_cloudwatch_log_group && try(v.create_cloudwatch_log_group, true) && try(v.destination_type, "") == "cloudwatch-logs" }
 
   name              = "/aws/elasticache/${try(each.value.cloudwatch_log_group_name, coalesce(var.cluster_id, var.replication_group_id), "")}"
@@ -249,7 +253,8 @@ locals {
 }
 
 resource "aws_elasticache_parameter_group" "this" {
-  count = var.create && var.create_parameter_group ? 1 : 0
+  region = var.region
+  count  = var.create && var.create_parameter_group ? 1 : 0
 
   description = coalesce(var.parameter_group_description, "ElastiCache parameter group")
   family      = var.parameter_group_family
@@ -281,7 +286,8 @@ locals {
 }
 
 resource "aws_elasticache_subnet_group" "this" {
-  count = var.create && var.create_subnet_group ? 1 : 0
+  region = var.region
+  count  = var.create && var.create_subnet_group ? 1 : 0
 
   name        = local.inter_subnet_group_name
   description = coalesce(var.subnet_group_description, "ElastiCache subnet group")
@@ -304,7 +310,8 @@ locals {
 }
 
 resource "aws_security_group" "this" {
-  count = local.create_security_group ? 1 : 0
+  region = var.region
+  count  = local.create_security_group ? 1 : 0
 
   name        = var.security_group_use_name_prefix ? null : local.security_group_name
   name_prefix = var.security_group_use_name_prefix ? "${local.security_group_name}-" : null
@@ -319,6 +326,7 @@ resource "aws_security_group" "this" {
 }
 
 resource "aws_vpc_security_group_ingress_rule" "this" {
+  region   = var.region
   for_each = { for k, v in var.security_group_rules : k => v if local.create_security_group && try(v.type, "ingress") == "ingress" }
 
   # Required
@@ -338,6 +346,7 @@ resource "aws_vpc_security_group_ingress_rule" "this" {
 }
 
 resource "aws_vpc_security_group_egress_rule" "this" {
+  region   = var.region
   for_each = { for k, v in var.security_group_rules : k => v if local.create_security_group && try(v.type, "ingress") == "egress" }
 
   # Required

variables.tf

@@ -434,3 +434,9 @@ variable "security_group_tags" {
   type        = map(string)
   default     = {}
 }
+
+variable "region" {
+  description = "AWS region where the resources will be managed."
+  type        = string
+  default     = null
+}