Terraform dependency updates (#983)

* Update to Container App module v1.4.9

* This version allows us to set the HTTP request threshold that triggers scale-out

* Updated TF to 1.7.1

* Updated packages

.github/workflows/continuous-integration-terraform.yml

@@ -40,19 +40,19 @@ jobs:
         run: rm ./terraform/backend.tf
 
       - name: Run a Terraform init
-        uses: docker://hashicorp/terraform:1.6.4
+        uses: docker://hashicorp/terraform:1.7.1
         with:
           entrypoint: terraform
           args: -chdir=terraform init
 
       - name: Run a Terraform validate
-        uses: docker://hashicorp/terraform:1.6.4
+        uses: docker://hashicorp/terraform:1.7.1
         with:
           entrypoint: terraform
           args: -chdir=terraform validate
 
       - name: Run a Terraform format check
-        uses: docker://hashicorp/terraform:1.6.4
+        uses: docker://hashicorp/terraform:1.7.1
         with:
           entrypoint: terraform
           args: -chdir=terraform fmt -check=true -diff=true

terraform/.terraform-version

@@ -1 +1 @@
-1.6.4
+1.7.1

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 |
 
@@ -163,6 +163,7 @@ No resources.
 | <a name="input_container_command"></a> [container\_command](#input\_container\_command) | Container command | `list(any)` | n/a | yes |
 | <a name="input_container_health_probe_path"></a> [container\_health\_probe\_path](#input\_container\_health\_probe\_path) | Specifies the path that is used to determine the liveness of the Container | `string` | n/a | yes |
 | <a name="input_container_max_replicas"></a> [container\_max\_replicas](#input\_container\_max\_replicas) | Container max replicas | `number` | n/a | yes |
+| <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_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 |
 | <a name="input_dns_txt_records"></a> [dns\_txt\_records](#input\_dns\_txt\_records) | DNS TXT 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 |

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
@@ -26,6 +26,7 @@ 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_cdn_frontdoor                      = local.enable_cdn_frontdoor
   cdn_frontdoor_forwarding_protocol         = local.cdn_frontdoor_forwarding_protocol

terraform/locals.tf

@@ -12,6 +12,7 @@ locals {
   container_command                            = var.container_command
   container_secret_environment_variables       = var.container_secret_environment_variables
   container_max_replicas                       = var.container_max_replicas
+  container_scale_http_concurrency             = var.container_scale_http_concurrency
   enable_event_hub                             = var.enable_event_hub
   enable_logstash_consumer                     = var.enable_logstash_consumer
   eventhub_export_log_analytics_table_names    = var.eventhub_export_log_analytics_table_names

terraform/variables.tf

@@ -82,6 +82,12 @@ variable "container_max_replicas" {
   type        = number
 }
 
+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_event_hub" {
   description = "Send Azure Container App logs to an Event Hub sink"
   type        = bool