ecs-task.tf

resource "aws_ecs_task_definition" "task_definition" {
  family                = local.container_name # Naming our first task
  container_definitions = data.template_file.task_json.rendered

  # [
  #   {
  #     "name": "react-app",
  #     "image": "${data.aws_ecr_repository.ecr-repository.repository_url}",
  #     "essential": true,
  #     "portMappings": [
  #       {
  #         "containerPort": 80,
  #         "hostPort": 80
  #       }
  #     ],    
  #     "memory": 512,
  #     "cpu": 256
  #   }
  # ]
  # DEFINITION

  requires_compatibilities = ["FARGATE"]                  # Stating that we are using ECS Fargate
  network_mode             = "awsvpc"                     # Using awsvpc as our network mode as this is required for Fargate
  memory                   = local.container_memory_limit # Specifying the memory our container requires
  cpu                      = local.container_cpu_limit    # Specifying the CPU our container requires
  execution_role_arn       = aws_iam_role.ecsTaskExecutionRole.arn
}

resource "aws_ecs_service" "frontend_service" {
  name            = "react-app"                                 # Naming our first service
  cluster         = aws_ecs_cluster.ecs_cluster.id              # Referencing our created Cluster
  task_definition = aws_ecs_task_definition.task_definition.arn # Referencing the task our service will spin up
  launch_type     = "FARGATE"
  desired_count   = local.container_counters <= 0 ? 2 : local.container_counters # Setting the number of containers we want deployed to 2
  # health_check_grace_period_seconds = 10

  network_configuration {
    subnets          = ["${aws_subnet.subnet-public-a.id}", "${aws_subnet.subnet-public-b.id}"]
    assign_public_ip = true # Providing our containers with public IPs
    security_groups  = ["${aws_security_group.sg_ecs.id}"]
  }

  load_balancer {
    target_group_arn = aws_lb_target_group.target_group.arn # Referencing our target group
    container_name   = aws_ecs_task_definition.task_definition.family
    container_port   = 80 # Specifying the container port
  }
}