From 456dc031fc263802caec230f1e8a490b82d2f5c2 Mon Sep 17 00:00:00 2001
From: Olivia Campbell <olivia@dxw.com>
Date: Tue, 30 Jan 2024 16:20:48 +0000
Subject: [PATCH] Update Container app module to v1.4.9

1.4.9 is the latest release for ACA module.
Add future scaling capability for containers.
---
 terraform/README.md                 | 3 ++-
 terraform/container-apps-hosting.tf | 3 ++-
 terraform/locals.tf                 | 1 +
 terraform/variables.tf              | 6 ++++++
 4 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/terraform/README.md b/terraform/README.md
index 7d5a85e40..353b384b1 100644
--- a/terraform/README.md
+++ b/terraform/README.md
@@ -136,7 +136,7 @@ No providers.
 
 | Name | Source | Version |
 |------|--------|---------|
-| <a name="module_azure_container_apps_hosting"></a> [azure\_container\_apps\_hosting](#module\_azure\_container\_apps\_hosting) | github.com/DFE-Digital/terraform-azurerm-container-apps-hosting | v1.4.5 |
+| <a name="module_azure_container_apps_hosting"></a> [azure\_container\_apps\_hosting](#module\_azure\_container\_apps\_hosting) | github.com/DFE-Digital/terraform-azurerm-container-apps-hosting | v1.4.9 |
 | <a name="module_azurerm_key_vault"></a> [azurerm\_key\_vault](#module\_azurerm\_key\_vault) | github.com/DFE-Digital/terraform-azurerm-key-vault-tfvars | v0.3.0 |
 | <a name="module_statuscake-tls-monitor"></a> [statuscake-tls-monitor](#module\_statuscake-tls-monitor) | github.com/dfe-digital/terraform-statuscake-tls-monitor | v0.1.2 |
 
@@ -160,6 +160,7 @@ No resources.
 | <a name="input_container_apps_allow_ips_inbound"></a> [container\_apps\_allow\_ips\_inbound](#input\_container\_apps\_allow\_ips\_inbound) | Restricts access to the Container Apps by creating a network security group rule that only allow inbound traffic from the provided list of IPs | `list(string)` | `[]` | no |
 | <a name="input_container_command"></a> [container\_command](#input\_container\_command) | Container command | `list(any)` | n/a | yes |
 | <a name="input_container_max_replicas"></a> [container\_max\_replicas](#input\_container\_max\_replicas) | Container max replicas | `number` | `2` | no |
+| <a name="input_container_scale_http_concurrency"></a> [container\_scale\_http\_concurrency](#input\_container\_scale\_http\_concurrency) | When the number of concurrent HTTP requests exceeds this value, then another replica is added. Replicas continue to add to the pool up to the max-replicas amount. | `number` | `10` | no |
 | <a name="input_container_secret_environment_variables"></a> [container\_secret\_environment\_variables](#input\_container\_secret\_environment\_variables) | Container secret environment variables | `map(string)` | n/a | yes |
 | <a name="input_dns_a_records"></a> [dns\_a\_records](#input\_dns\_a\_records) | DNS A records to add to the DNS Zone | <pre>map(<br>    object({<br>      ttl : optional(number, 300),<br>      records : list(string)<br>    })<br>  )</pre> | n/a | yes |
 | <a name="input_dns_ns_records"></a> [dns\_ns\_records](#input\_dns\_ns\_records) | DNS NS records to add to the DNS Zone | <pre>map(<br>    object({<br>      ttl : optional(number, 300),<br>      records : list(string)<br>    })<br>  )</pre> | n/a | yes |
diff --git a/terraform/container-apps-hosting.tf b/terraform/container-apps-hosting.tf
index b5c838a88..e9bba6e94 100644
--- a/terraform/container-apps-hosting.tf
+++ b/terraform/container-apps-hosting.tf
@@ -1,5 +1,5 @@
 module "azure_container_apps_hosting" {
-  source = "github.com/DFE-Digital/terraform-azurerm-container-apps-hosting?ref=v1.4.5"
+  source = "github.com/DFE-Digital/terraform-azurerm-container-apps-hosting?ref=v1.4.9"
 
   environment    = local.environment
   project_name   = local.project_name
@@ -17,6 +17,7 @@ module "azure_container_apps_hosting" {
   container_command                      = local.container_command
   container_secret_environment_variables = local.container_secret_environment_variables
   container_max_replicas                 = local.container_max_replicas
+  container_scale_http_concurrency       = local.container_scale_http_concurrency
 
   enable_redis_cache = local.enable_redis_cache
 
diff --git a/terraform/locals.tf b/terraform/locals.tf
index 6e5e89b8f..e12ffd171 100644
--- a/terraform/locals.tf
+++ b/terraform/locals.tf
@@ -10,6 +10,7 @@ locals {
   registry_managed_identity_assign_role        = var.registry_managed_identity_assign_role
   image_name                                   = var.image_name
   container_command                            = var.container_command
+  container_scale_http_concurrency             = var.container_scale_http_concurrency
   container_secret_environment_variables       = var.container_secret_environment_variables
   container_max_replicas                       = var.container_max_replicas
   enable_cdn_frontdoor                         = var.enable_cdn_frontdoor
diff --git a/terraform/variables.tf b/terraform/variables.tf
index 15cfd3a8a..5d7e3c3fd 100644
--- a/terraform/variables.tf
+++ b/terraform/variables.tf
@@ -132,6 +132,12 @@ variable "container_apps_allow_ips_inbound" {
   default     = []
 }
 
+variable "container_scale_http_concurrency" {
+  description = "When the number of concurrent HTTP requests exceeds this value, then another replica is added. Replicas continue to add to the pool up to the max-replicas amount."
+  type        = number
+  default     = 10
+}
+
 variable "enable_dns_zone" {
   description = "Conditionally create a DNS zone"
   type        = bool