feat(envoy): add virtual_hosts_domains variable and update templating support

terraform/aws/modules/composition/envoy-proxy/README.md

@@ -118,6 +118,7 @@
 | <a name="input_target_group_protocol"></a> [target\_group\_protocol](#input\_target\_group\_protocol) | Protocol for target group (HTTP or HTTPS) | `string` | `"HTTP"` | no |
 | <a name="input_termination_policies"></a> [termination\_policies](#input\_termination\_policies) | List of policies to use when selecting instances to terminate (OldestLaunchTemplate, OldestInstance, Default, etc.) | `list(string)` | <pre>[<br/>  "OldestLaunchTemplate",<br/>  "OldestInstance",<br/>  "Default"<br/>]</pre> | no |
 | <a name="input_upload_config_to_s3"></a> [upload\_config\_to\_s3](#input\_upload\_config\_to\_s3) | Whether to upload config files from local directory to S3 | `bool` | `false` | no |
+| <a name="input_virtual_hosts_domains"></a> [virtual\_hosts\_domains](#input\_virtual\_hosts\_domains) | List of domain names for the Envoy virtual host (for envoy.yaml templating) | `list(string)` | `[]` | no |
 | <a name="input_vpc_id"></a> [vpc\_id](#input\_vpc\_id) | VPC ID where resources will be created | `string` | n/a | yes |
 | <a name="input_waf_web_acl_arn"></a> [waf\_web\_acl\_arn](#input\_waf\_web\_acl\_arn) | ARN of AWS WAFv2 WebACL to associate with ALB (required if enable\_waf = true) | `string` | `null` | no |
 

terraform/aws/modules/composition/envoy-proxy/locals.tf

@@ -22,19 +22,24 @@ locals {
   )
 
   default_eks_cluster_name = "${var.environment}-${var.project_name}-cluster"
-  eks_cluster_name = var.eks_cluster_name != "" ? var.eks_cluster_name : local.default_eks_cluster_name
+  eks_cluster_name         = var.eks_cluster_name != "" ? var.eks_cluster_name : local.default_eks_cluster_name
 
   # Envoy configuration templating - replace placeholders with actual values
-  # Supports: {{hyperswitch_cloudfront_dns}}, {{internal_loadbalancer_dns}}, {{eks_cluster_name}}
+  # Supports: {{hyperswitch_cloudfront_dns}}, {{internal_loadbalancer_dns}}, {{eks_cluster_name}}, {{virtual_hosts_domains}}
+  virtual_hosts_domains_json = jsonencode(var.virtual_hosts_domains)
+
   envoy_config_content = replace(
     replace(
       replace(
-        var.envoy_config_template,
-        "{{hyperswitch_cloudfront_dns}}", var.hyperswitch_cloudfront_dns
+        replace(
+          var.envoy_config_template,
+          "{{hyperswitch_cloudfront_dns}}", var.hyperswitch_cloudfront_dns
+        ),
+        "{{internal_loadbalancer_dns}}", var.internal_loadbalancer_dns
       ),
-      "{{internal_loadbalancer_dns}}", var.internal_loadbalancer_dns
+      "{{eks_cluster_name}}", local.eks_cluster_name
     ),
-    "{{eks_cluster_name}}", local.eks_cluster_name
+    "{{virtual_hosts_domains}}", local.virtual_hosts_domains_json
   )
 
   # Logs bucket selection - use created or existing

terraform/aws/modules/composition/envoy-proxy/outputs.tf

@@ -120,7 +120,7 @@ output "ssh_key_pair_id" {
 
 output "ssh_key_retrieval_command" {
   description = "Command to retrieve the private SSH key from Parameter Store (only if auto-generated)"
-  value = var.generate_ssh_key ? "aws ssm get-parameter --name \"${aws_ssm_parameter.envoy_private_key[0].name}\" --with-decryption --query 'Parameter.Value' --output text > ${module.key_pair[0].key_pair_name}.pem && chmod 400 ${module.key_pair[0].key_pair_name}.pem" : null
+  value       = var.generate_ssh_key ? "aws ssm get-parameter --name \"${aws_ssm_parameter.envoy_private_key[0].name}\" --with-decryption --query 'Parameter.Value' --output text > ${module.key_pair[0].key_pair_name}.pem && chmod 400 ${module.key_pair[0].key_pair_name}.pem" : null
 }
 
 output "config_version" {

terraform/aws/modules/composition/envoy-proxy/variables.tf

@@ -284,7 +284,7 @@ variable "deployments" {
 
   default = {
     "stable" = {
-      weight = 100
+      weight                  = 100
       launch_template_version = "$Latest"
     }
   }
@@ -551,6 +551,12 @@ variable "internal_loadbalancer_dns" {
   default     = ""
 }
 
+variable "virtual_hosts_domains" {
+  description = "List of domain names for the Envoy virtual host (for envoy.yaml templating)"
+  type        = list(string)
+  default     = []
+}
+
 variable "eks_cluster_name" {
   description = "EKS cluster name (for envoy.yaml templating)"
   type        = string