main.tf

module "enabled" {
  source  = "devops-workflow/boolean/local"
  version = "0.1.1"
  value   = "${var.enabled}"
}

data "aws_route53_zone" "default" {
  count   = "${module.enabled.value ? signum(length(compact(var.aliases))) : 0}"
  zone_id = "${var.parent_zone_id}"
  name    = "${var.parent_zone_name}"
}

resource "aws_route53_record" "default" {
  count   = "${module.enabled.value ? length(compact(var.aliases)) : 0}"
  zone_id = "${data.aws_route53_zone.default.zone_id}"
  name    = "${element(compact(var.aliases), count.index)}"
  type    = "A"

  alias {
    name                   = "${var.target_dns_name}"
    zone_id                = "${var.target_zone_id}"
    evaluate_target_health = "${var.evaluate_target_health}"
  }
}