Made cloudwatch resources optional

README.md

@@ -90,6 +90,7 @@ In addition you have the option to create or not :
 | autoscaling\_scale\_out\_cooldown | Cooldown in seconds to wait between scale out events | `number` | `300` | no |
 | autoscaling\_target\_cpu | Target average CPU percentage to track for autoscaling | `number` | `50` | no |
 | autoscaling\_target\_memory | Target average Memory percentage to track for autoscaling | `number` | `90` | no |
+| cloudwatch\_logs\_create | Whether to create cloudwatch log resources or not | `bool` | `true` | no |
 | cloudwatch\_logs\_export | Whether to mark the log group to export to an S3 bucket (needs terraform-aws-log-exporter to be deployed in the account/region) | `bool` | `false` | no |
 | cloudwatch\_logs\_retention | Specifies the number of days you want to retain log events in the specified log group. Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, and 3653. | `number` | `120` | no |
 | cluster\_name | n/a | `string` | `"Name of existing ECS Cluster to deploy this app to"` | no |

_variables.tf

@@ -257,6 +257,11 @@ variable "codedeploy_deployment_config_name" {
   description = "Specifies the deployment configuration for CodeDeploy"
 }
 
+variable "cloudwatch_logs_create" {
+  default     = true
+  description = "Whether to create cloudwatch log resources or not"
+}
+
 variable "cloudwatch_logs_retention" {
   default     = 120
   description = "Specifies the number of days you want to retain log events in the specified log group. Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, and 3653."

cloudwatch-ecs-event-logs.tf

@@ -1,4 +1,5 @@
 resource "aws_cloudwatch_log_group" "ecs_events" {
+  count             = var.cloudwatch_logs_create ? 1 : 0
   name              = "/ecs/events/${var.cluster_name}/${var.name}"
   retention_in_days = var.cloudwatch_logs_retention
   tags = {
@@ -8,6 +9,7 @@ resource "aws_cloudwatch_log_group" "ecs_events" {
 
 
 resource "aws_cloudwatch_event_rule" "ecs_events" {
+  count         = var.cloudwatch_logs_create ? 1 : 0
   name          = "capture-ecs-events-${var.cluster_name}-${var.name}"
   description   = "Capture ecs service events from ${var.cluster_name}-${var.name}"
   event_pattern = <<EOF
@@ -23,19 +25,21 @@ EOF
 }
 
 resource "aws_cloudwatch_event_target" "ecs_events" {
-  rule = aws_cloudwatch_event_rule.ecs_events.name
-  arn  = aws_cloudwatch_log_group.ecs_events.arn
+  count = var.cloudwatch_logs_create ? 1 : 0
+  rule  = aws_cloudwatch_event_rule.ecs_events[0].name
+  arn   = aws_cloudwatch_log_group.ecs_events[0].arn
 }
 
 data "aws_iam_policy_document" "ecs_events" {
+  count = var.cloudwatch_logs_create ? 1 : 0
   statement {
     actions = [
       "logs:CreateLogStream",
       "logs:PutLogEvents",
       "logs:PutLogEventsBatch",
     ]
 
-    resources = ["${aws_cloudwatch_log_group.ecs_events.arn}:*"]
+    resources = ["${aws_cloudwatch_log_group.ecs_events[0].arn}:*"]
 
     principals {
       identifiers = ["events.amazonaws.com", "delivery.logs.amazonaws.com"]
@@ -45,6 +49,7 @@ data "aws_iam_policy_document" "ecs_events" {
 }
 
 resource "aws_cloudwatch_log_resource_policy" "ecs_events" {
-  policy_document = data.aws_iam_policy_document.ecs_events.json
+  count           = var.cloudwatch_logs_create ? 1 : 0
+  policy_document = data.aws_iam_policy_document.ecs_events[0].json
   policy_name     = "capture-ecs-events-${var.cluster_name}-${var.name}"
 }