AWS ECS scheduled task module

Terraform
1

Hi,

I’m trying to create a module for ECS to use scheduled tasks. I can get an ecs cluster, service and task definition created but running into an issue when including the cloudwacth_events module.

Error: Invalid value for module argument

  main.tf line 89, in module "events":
    ecs_target = [
      {
      task_count = 1
       task_definition_arn = module.ecs.ecs_task_arn
     }
     ]

The given value is not suitable for child module variable "ecs_target" defined
at ..\terraform_aws_modules\monitoring\cloudwatch\events\variable.tf:47,1-22:
element 0: element "task_definition_arn": string required.

The plan looks like the below:
module “ecs” {

    source = "../terraform_aws_modules/compute/ecs/"
     create_cluster = true
    create_service = true
    cluster_name = "test_cluster"
    capacity_providers = ["FARGATE"]
    service_name = ["test-service"]
    launch_type = "FARGATE"
    scheduling_strategy = "REPLICA"
    platform_version = "LATEST"
    desired_count = 0
    enable_ecs_managed_tags = true
    propagate_tags = "TASK_DEFINITION"
    assign_public_ips = false
    ecs_subnet_ids = []
    security_groups = []
    family = ["test"]
    container_definitions = file("service.json")
    requires_compatibilities = toset(["FARGATE"])
    network_mode = "awsvpc"
    memory = 512
    cpu = 256
    execution_role_arn = module.iam.iam_role_arn
    task_role_arn = module.iam.iam_role_arn
}

module "events" {
  source = "../terraform_aws_modules/monitoring/cloudwatch/events"
  name = "test"
  target_id = "test"
  schedule_expression =  ["cron(0 6 * * ? *)"]
  role_arn = module.iam.iam_role_arn
  arn = module.ecs.ecs_cluster_arn
  ecs_target = [
    {
    task_count = 1
    task_definition_arn = module.ecs.ecs_task_arn
  }
  ]
}

The cloudwatch_event_target resource block is below:

    resource "aws_cloudwatch_event_target" "this" {
      count = var.enable_event && length(var.name) > 0 ? length(var.name) : 0
      rule      = aws_cloudwatch_event_rule.this[count.index].name
      arn       = element(var.arn, count.index)
      target_id = var.target_id
      role_arn  = var.role_arn
      dynamic "ecs_target" {
        for_each = var.ecs_target
        content {
          group               = lookup(ecs_target.value, "group", null)
          launch_type         = lookup(ecs_target.value, "launch_type", null)
          platform_version    = lookup(ecs_target.value, "platform_version", null)
          task_count          = lookup(ecs_target.value, "task_count", null)
          task_definition_arn = lookup(ecs_target.value, "task_definition_arn", null)

And the ecs task output is:

output "ecs_task_arn" {
  description = "ARN of task definition"
  value       = aws_ecs_task_definition.this.*.arn
}

Where am i going wrong?