feat: add load_balancing_anomaly_mitigation to TG

README.md

@@ -261,6 +261,7 @@ Available targets:
 | <a name="input_load_balancer_name"></a> [load\_balancer\_name](#input\_load\_balancer\_name) | The name for the default load balancer, uses a module label name if left empty | `string` | `""` | no |
 | <a name="input_load_balancer_name_max_length"></a> [load\_balancer\_name\_max\_length](#input\_load\_balancer\_name\_max\_length) | The max length of characters for the load balancer. | `number` | `32` | no |
 | <a name="input_load_balancing_algorithm_type"></a> [load\_balancing\_algorithm\_type](#input\_load\_balancing\_algorithm\_type) | Determines how the load balancer selects targets when routing requests. Only applicable for Application Load Balancer Target Groups | `string` | `"round_robin"` | no |
+| <a name="input_load_balancing_anomaly_mitigation"></a> [load\_balancing\_anomaly\_mitigation](#input\_load\_balancing\_anomaly\_mitigation) | Determines whether to enable target anomaly mitigation. Only supported by the weighted\_random load balancing algorithm type. Valid values are 'on' or 'off'. | `string` | `"off"` | no |
 | <a name="input_name"></a> [name](#input\_name) | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br/>This is the only ID element not also included as a `tag`.<br/>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input. | `string` | `null` | no |
 | <a name="input_namespace"></a> [namespace](#input\_namespace) | ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique | `string` | `null` | no |
 | <a name="input_noncurrent_version_expiration_days"></a> [noncurrent\_version\_expiration\_days](#input\_noncurrent\_version\_expiration\_days) | (Deprecated, use `lifecycle_configuration_rules` instead)<br/>Specifies when non-current object versions expire (in days) | `number` | `90` | no |

docs/terraform.md

@@ -99,6 +99,7 @@
 | <a name="input_load_balancer_name"></a> [load\_balancer\_name](#input\_load\_balancer\_name) | The name for the default load balancer, uses a module label name if left empty | `string` | `""` | no |
 | <a name="input_load_balancer_name_max_length"></a> [load\_balancer\_name\_max\_length](#input\_load\_balancer\_name\_max\_length) | The max length of characters for the load balancer. | `number` | `32` | no |
 | <a name="input_load_balancing_algorithm_type"></a> [load\_balancing\_algorithm\_type](#input\_load\_balancing\_algorithm\_type) | Determines how the load balancer selects targets when routing requests. Only applicable for Application Load Balancer Target Groups | `string` | `"round_robin"` | no |
+| <a name="input_load_balancing_anomaly_mitigation"></a> [load\_balancing\_anomaly\_mitigation](#input\_load\_balancing\_anomaly\_mitigation) | Determines whether to enable target anomaly mitigation. Only supported by the weighted\_random load balancing algorithm type. Valid values are 'on' or 'off'. | `string` | `"off"` | no |
 | <a name="input_name"></a> [name](#input\_name) | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br/>This is the only ID element not also included as a `tag`.<br/>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input. | `string` | `null` | no |
 | <a name="input_namespace"></a> [namespace](#input\_namespace) | ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique | `string` | `null` | no |
 | <a name="input_noncurrent_version_expiration_days"></a> [noncurrent\_version\_expiration\_days](#input\_noncurrent\_version\_expiration\_days) | (Deprecated, use `lifecycle_configuration_rules` instead)<br/>Specifies when non-current object versions expire (in days) | `number` | `90` | no |

main.tf

@@ -120,16 +120,17 @@ module "default_target_group_label" {
 }
 
 resource "aws_lb_target_group" "default" {
-  count                         = module.this.enabled && var.default_target_group_enabled ? 1 : 0
-  name                          = var.target_group_name == "" ? module.default_target_group_label.id : substr(var.target_group_name, 0, var.target_group_name_max_length)
-  port                          = var.target_group_port
-  protocol                      = var.target_group_protocol
-  protocol_version              = var.target_group_protocol_version
-  vpc_id                        = var.vpc_id
-  target_type                   = var.target_group_target_type
-  load_balancing_algorithm_type = var.load_balancing_algorithm_type
-  deregistration_delay          = var.deregistration_delay
-  slow_start                    = var.slow_start
+  count                             = module.this.enabled && var.default_target_group_enabled ? 1 : 0
+  name                              = var.target_group_name == "" ? module.default_target_group_label.id : substr(var.target_group_name, 0, var.target_group_name_max_length)
+  port                              = var.target_group_port
+  protocol                          = var.target_group_protocol
+  protocol_version                  = var.target_group_protocol_version
+  vpc_id                            = var.vpc_id
+  target_type                       = var.target_group_target_type
+  load_balancing_algorithm_type     = var.load_balancing_algorithm_type
+  load_balancing_anomaly_mitigation = var.load_balancing_anomaly_mitigation
+  deregistration_delay              = var.deregistration_delay
+  slow_start                        = var.slow_start
 
   health_check {
     protocol            = var.health_check_protocol != null ? var.health_check_protocol : var.target_group_protocol

variables.tf

@@ -366,6 +366,25 @@ variable "load_balancing_algorithm_type" {
   description = "Determines how the load balancer selects targets when routing requests. Only applicable for Application Load Balancer Target Groups"
 }
 
+variable "load_balancing_anomaly_mitigation" {
+  type        = string
+  default     = "off"
+  description = "Determines whether to enable target anomaly mitigation. Only supported by the weighted_random load balancing algorithm type. Valid values are 'on' or 'off'."
+
+  validation {
+    condition     = contains(["on", "off"], var.load_balancing_anomaly_mitigation)
+    error_message = "load_balancing_anomaly_mitigation must be either 'on' or 'off'"
+  }
+
+  # TODO: Uncomment improved validation block once Terraform version is upgraded to >= 1.9
+  # validation {
+  #   condition     = var.load_balancing_anomaly_mitigation == "off" || (
+  #     var.load_balancing_anomaly_mitigation == "on" && var.load_balancing_algorithm_type == "weighted_random"
+  #   )
+  #   error_message = "load_balancing_anomaly_mitigation can only be 'on' when load_balancing_algorithm_type is 'weighted_random'"
+  # }
+}
+
 variable "default_target_group_enabled" {
   type        = bool
   description = "Whether the default target group should be created or not."