issues #59 Add an option for enabling deployment_circuit_breaker (#61)

* add an option for enabling deployment_circuit_breaker

* update readme

* define a block of type deployment_circuit_breaker

* Update main.tf

Co-authored-by: Julian Nonino <jnonino@users.noreply.github.com>

Author: akaiypova-jetty

README.md

@@ -91,6 +91,7 @@ In order to run all checks at any point run the following command:
 | <a name="input_deployment_controller"></a> [deployment\_controller](#input\_deployment\_controller) | (Optional) Deployment controller | `list(string)` | `[]` | no |
 | <a name="input_deployment_maximum_percent"></a> [deployment\_maximum\_percent](#input\_deployment\_maximum\_percent) | (Optional) The upper limit (as a percentage of the service's desiredCount) of the number of running tasks that can be running in a service during a deployment. | `number` | `200` | no |
 | <a name="input_deployment_minimum_healthy_percent"></a> [deployment\_minimum\_healthy\_percent](#input\_deployment\_minimum\_healthy\_percent) | (Optional) The lower limit (as a percentage of the service's desiredCount) of the number of running tasks that must remain running and healthy in a service during a deployment. | `number` | `100` | no |
+| <a name="input_deployment_circuit_breaker"></a> [deployment\_circuit\_breaker](#input\_deployment\_circuit\_breaker) | (Optional) You can enable the deployment circuit breaker to cause a service deployment to transition to a failed state if tasks are persistently failing to reach RUNNING state or are failing healthcheck. The optional rollback option causes Amazon ECS to roll back to the last completed deployment upon a deployment failure. | <pre>list(object({<br>    enabled = bool<br>    rollback = bool<br>  }))</pre> | `[]` | no |
 | <a name="input_desired_count"></a> [desired\_count](#input\_desired\_count) | (Optional) The number of instances of the task definition to place and keep running. Defaults to 0. | `number` | `1` | no |
 | <a name="input_ecs_cluster_arn"></a> [ecs\_cluster\_arn](#input\_ecs\_cluster\_arn) | ARN of an ECS cluster | `any` | n/a | yes |
 | <a name="input_ecs_cluster_name"></a> [ecs\_cluster\_name](#input\_ecs\_cluster\_name) | (Optional) Name of the ECS cluster. Required only if autoscaling is enabled | `string` | `null` | no |

main.tf

@@ -97,6 +97,10 @@ resource "aws_ecs_service" "service" {
     subnets          = var.assign_public_ip ? var.public_subnets : var.private_subnets
     assign_public_ip = var.assign_public_ip
   }
+  deployment_circuit_breaker {
+    enable   = var.deployment_circuit_breaker_enabled
+    rollback = var.deployment_circuit_breaker_rollback
+  }
   dynamic "ordered_placement_strategy" {
     for_each = var.ordered_placement_strategy
     content {

variables.tf

@@ -31,6 +31,18 @@ variable "deployment_minimum_healthy_percent" {
   default     = 100
 }
 
+variable "deployment_circuit_breaker_enabled" {
+  description = "(Optional) You can enable the deployment circuit breaker to cause a service deployment to transition to a failed state if tasks are persistently failing to reach RUNNING state or are failing healthcheck."
+  type        = bool
+  default     = false
+}
+
+variable "deployment_circuit_breaker_rollback" {
+  description = "(Optional) The optional rollback option causes Amazon ECS to roll back to the last completed deployment upon a deployment failure."
+  type        = bool
+  default     = false
+}
+
 variable "desired_count" {
   description = "(Optional) The number of instances of the task definition to place and keep running. Defaults to 0."
   type        = number