From b02f0be1a2666b614fe1eff78838dc0762f71ab0 Mon Sep 17 00:00:00 2001
From: Artsiom Ihnatovich <41552160+ignatovich-artem@users.noreply.github.com>
Date: Mon, 6 Sep 2021 14:42:46 +0300
Subject: [PATCH] Add ECS deployment circuit breaker (#19)

* add ECS deployment circuit breaker

* add empty line
---
 README.md      |  2 ++
 ecs-cluster.tf |  7 ++++++-
 variables.tf   | 12 ++++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 01f241b..2de8cba 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,8 @@ EOF
 | availability\_zones | List of availability zones which will be provisined by autoscailing group  | list | `[]` | yes |
 | vpc\_id | The ID of VPC | string | - | yes |
 | container\_insights\_monitoring | Defines enable/disable Cloudwatch Container Insights monitoring | string | `disabled` | no |
+| enable\_circuit\_breaker | Enable deployment circuit breaker | bool | false | no |
+| enable\_rollback | Enable deployment rollback with circuit breaker | bool | false | no |
 
 ### Container definitions default value
 
diff --git a/ecs-cluster.tf b/ecs-cluster.tf
index 03d7e4b..10b4b2f 100644
--- a/ecs-cluster.tf
+++ b/ecs-cluster.tf
@@ -6,7 +6,7 @@ resource "aws_ecs_cluster" "this" {
     name  = "containerInsights"
     value = var.container_insights_monitoring
   }
-  tags  = merge(local.default_tags, var.tags)
+  tags = merge(local.default_tags, var.tags)
 }
 
 data "aws_ecs_cluster" "this" {
@@ -69,6 +69,11 @@ resource "aws_ecs_service" "this" {
     container_port   = var.container_port
   }
 
+  deployment_circuit_breaker {
+    enable   = var.enable_circuit_breaker
+    rollback = var.enable_rollback
+  }
+
   lifecycle {
     ignore_changes = [desired_count]
   }
diff --git a/variables.tf b/variables.tf
index faf74c4..765d60c 100644
--- a/variables.tf
+++ b/variables.tf
@@ -163,3 +163,15 @@ variable "container_insights_monitoring" {
   description = "Defines enable/disable Cloudwatch Container Insights monitoring"
   default     = "disabled"
 }
+
+variable "enable_circuit_breaker" {
+  type        = bool
+  default     = false
+  description = "Whether to enable deployment circuit breaker"
+}
+
+variable "enable_rollback" {
+  type        = bool
+  default     = false
+  description = "Whether to enable deployment rollback with circuit breaker"
+}