feat: Added TGW mutlicast support (#73)

Author: alimakki

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/antonbabenko/pre-commit-terraform
-    rev: v1.64.0
+    rev: v1.71.0
     hooks:
       - id: terraform_fmt
       - id: terraform_validate
@@ -23,7 +23,7 @@ repos:
           - '--args=--only=terraform_standard_module_structure'
           - '--args=--only=terraform_workspace_remote'
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.1.0
+    rev: v4.2.0
     hooks:
       - id: check-merge-conflict
       - id: end-of-file-fixer

README.md

@@ -109,6 +109,7 @@ No modules.
 | <a name="input_enable_default_route_table_association"></a> [enable\_default\_route\_table\_association](#input\_enable\_default\_route\_table\_association) | Whether resource attachments are automatically associated with the default association route table | `bool` | `true` | no |
 | <a name="input_enable_default_route_table_propagation"></a> [enable\_default\_route\_table\_propagation](#input\_enable\_default\_route\_table\_propagation) | Whether resource attachments automatically propagate routes to the default propagation route table | `bool` | `true` | no |
 | <a name="input_enable_dns_support"></a> [enable\_dns\_support](#input\_enable\_dns\_support) | Should be true to enable DNS support in the TGW | `bool` | `true` | no |
+| <a name="input_enable_mutlicast_support"></a> [enable\_mutlicast\_support](#input\_enable\_mutlicast\_support) | Whether multicast support is enabled | `bool` | `false` | no |
 | <a name="input_enable_vpn_ecmp_support"></a> [enable\_vpn\_ecmp\_support](#input\_enable\_vpn\_ecmp\_support) | Whether VPN Equal Cost Multipath Protocol support is enabled | `bool` | `true` | no |
 | <a name="input_name"></a> [name](#input\_name) | Name to be used on all the resources as identifier | `string` | `""` | no |
 | <a name="input_ram_allow_external_principals"></a> [ram\_allow\_external\_principals](#input\_ram\_allow\_external\_principals) | Indicates whether principals outside your organization can be associated with a resource share. | `bool` | `false` | no |

examples/complete/main.tf

@@ -29,6 +29,9 @@ module "tgw" {
   # When "true" there is no need for RAM resources if using multiple AWS accounts
   enable_auto_accept_shared_attachments = true
 
+  # When "true", allows service discovery through IGMP
+  enable_mutlicast_support = false
+
   vpc_attachments = {
     vpc1 = {
       vpc_id       = module.vpc1.vpc_id

main.tf

@@ -32,6 +32,7 @@ resource "aws_ec2_transit_gateway" "this" {
   default_route_table_association = var.enable_default_route_table_association ? "enable" : "disable"
   default_route_table_propagation = var.enable_default_route_table_propagation ? "enable" : "disable"
   auto_accept_shared_attachments  = var.enable_auto_accept_shared_attachments ? "enable" : "disable"
+  multicast_support               = var.enable_mutlicast_support ? "enable" : "disable"
   vpn_ecmp_support                = var.enable_vpn_ecmp_support ? "enable" : "disable"
   dns_support                     = var.enable_dns_support ? "enable" : "disable"
   transit_gateway_cidr_blocks     = var.transit_gateway_cidr_blocks

variables.tf

@@ -56,6 +56,12 @@ variable "enable_vpn_ecmp_support" {
   default     = true
 }
 
+variable "enable_mutlicast_support" {
+  description = "Whether multicast support is enabled"
+  type        = bool
+  default     = false
+}
+
 variable "enable_dns_support" {
   description = "Should be true to enable DNS support in the TGW"
   type        = bool