ecs_alb.tf

resource "aws_route53_zone" "this" {
  name  = var.domain_name
}

module "acm" {

  source = "terraform-aws-modules/acm/aws"

  domain_name = var.domain_name
  zone_id     = aws_route53_zone.this.zone_id

  wait_for_validation = true

  tags = {
    Terraform = "true"
  }

}
  
module "alb" {

  source  = "terraform-aws-modules/alb/aws"
  version = "~> 5.10.0"

  name               = "alb"
  load_balancer_type = "application"

  vpc_id          = module.vpc.vpc_id
  subnets         = module.vpc.public_subnets

  target_groups = [
    {
      backend_protocol = "HTTP"
      backend_port     = 8000
      target_type      = "ip"
      "health_check" = {
        enabled = true,
        path    = "/"
      }
    }
  ]

  https_listeners = [
    {
      port               = 443
      protocol           = "HTTPS"
      target_group_index = 0
      certificate_arn    = module.acm.this_acm_certificate_arn
    }
  ]

  tags = {
    Terraform = "true"
  }
}

resource "aws_route53_record" "dns_record" {
  zone_id = coalescelist(data.aws_route53_zone.this.*.zone_id, aws_route53_zone.this.*.zone_id)[0]
  name    = coalescelist(data.aws_route53_zone.this.*.name, aws_route53_zone.this.*.name)[0]
  type    = "A"
  alias {
    name                   = module.alb.this_lb_dns_name
    zone_id                = module.alb.this_lb_zone_id
    evaluate_target_health = false
  }
}    
    
resource "aws_service_discovery_private_dns_namespace" "dns_namespace" {
  name        = var.namespace
  vpc         = module.vpc.vpc_id

  tags = {
    Terraform = "true"
  }
}