How do I enable deletion protection for load balancer using ApplicationLoadBalancedFargateService cdk construct

Question

I have created a Fargate service running on an ECS cluster fronted by an application load balancer using the ApplicationLoadBalancedFargateService CDK construct.

  cluster,
  memoryLimitMiB: 1024,
  desiredCount: 1,
  cpu: 512,
  taskImageOptions: {
    image: ecs.ContainerImage.fromRegistry("amazon/amazon-ecs-sample"),
  },
});

There are no Props for enabling deletion protection. Can anyone tell from his experience?

Answer 1

CDK offers the Escape Hatches feature to use Clouformation Props if any High-level construct does not have parameters.

import { CfnLoadBalancer } from "aws-cdk-lib/aws-elasticloadbalancingv2";

// Create a load-balanced Fargate service and make it public
var loadBalancedService =
  new ecs_patterns.ApplicationLoadBalancedFargateService(
    this,
    `MyService`,
    {
      cluster: cluster,
      taskImageOptions: {
        image: ecs.ContainerImage.fromRegistry("image"),
        environment: {},
      },
      assignPublicIp: true,
    },
  );

// Get the CloudFormation resource
const cfnLB = loadBalancedService.loadBalancer.node
  .defaultChild as CfnLoadBalancer;
cfnLB.loadBalancerAttributes = [
  {
    key: "deletion_protection.enabled",
    value: "true",
  },