constructor()

in source/patterns/@aws-solutions-constructs/aws-alb-fargate/lib/index.ts [167:246]
66 lines of code
6 McCabe index (conditional complexity)

  constructor(scope: Construct, id: string, props: AlbToFargateProps) {
    super(scope, id);
    defaults.CheckProps(props);
    defaults.CheckAlbProps(props);
    defaults.CheckFargateProps(props);

    // Obtain VPC for construct (existing or created)
    this.vpc = defaults.buildVpc(scope, {
      existingVpc: props.existingVpc,
      defaultVpcProps: props.publicApi ? defaults.DefaultPublicPrivateVpcProps() : defaults.DefaultIsolatedVpcProps(),
      userVpcProps: props.vpcProps,
      constructVpcProps: { enableDnsHostnames: true, enableDnsSupport: true }
    });

    // Set up the ALB
    this.loadBalancer = defaults.ObtainAlb(
      scope,
      `${id}-lb`,
      this.vpc,
      props.publicApi,
      props.existingLoadBalancerObj,
      props.loadBalancerProps,
      props.logAlbAccessLogs,
      props.albLoggingBucketProps
    );

    const newListener: boolean = this.loadBalancer.listeners.length === 0;

    // If there's no listener, then we add one here
    if (newListener) {
      this.listener = defaults.AddListener(
        this,
        id,
        this.loadBalancer,
        props.listenerProps
      );
    } else {
      this.listener = GetActiveListener(this.loadBalancer.listeners);
    }

    if (props.existingFargateServiceObject) {
      this.service = props.existingFargateServiceObject;
      // CheckFargateProps confirms that the container is provided
      this.container = props.existingContainerDefinitionObject!;
    } else {
      [this.service, this.container] = defaults.CreateFargateService(
        scope,
        id,
        this.vpc,
        props.clusterProps,
        props.ecrRepositoryArn,
        props.ecrImageVersion,
        props.fargateTaskDefinitionProps,
        props.containerDefinitionProps,
        props.fargateServiceProps
      );
    }
    // Add the Fargate Service to the
    // to the ALB Listener we set up earlier
    const applicationTargetGroupProps = defaults.consolidateProps(
      defaults.DefaultApplicationTargetGroupProps(this.vpc),
      props.targetGroupProps
    );

    const newTargetGroup = defaults.AddFargateTarget(
      scope,
      `${id}-target`,
      this.listener,
      this.service,
      props.ruleProps,
      applicationTargetGroupProps
    );

    if (newListener && this.listener) {
      const levelOneListener = this.listener.node.defaultChild as CfnListener;
      const cfnTargetGroup = newTargetGroup.node.defaultChild as CfnTargetGroup;
      levelOneListener.addDependsOn(cfnTargetGroup);
    }

  }