export function CheckAlbProps()

in source/patterns/@aws-solutions-constructs/core/lib/alb-helper.ts [202:259]
49 lines of code
17 McCabe index (conditional complexity)

export function CheckAlbProps(props: any) {
  let errorMessages = '';
  let errorFound = false;

  if (props.listenerProps?.certificateArns) {
    errorMessages += "certificateArns is deprecated. Please supply certificates using props.listenerProps.certificates\n";
    errorFound = true;
  }

  if (
    ((props.existingLoadBalancerObj &&
      props.existingLoadBalancerObj.listeners.length === 0) ||
      !props.existingLoadBalancerObj) &&
    !props.listenerProps
  ) {
    errorMessages += "When adding the first listener and target to a load balancer, listenerProps must be specified and include at least a certificate or protocol: HTTP\n";
    errorFound = true;
  }

  if (
    props.existingLoadBalancerObj &&
    props.existingLoadBalancerObj.listeners.length > 0 &&
    props.listenerProps
  ) {
    errorFound = true;
    errorMessages += "This load balancer already has a listener, listenerProps may not be specified\n";
  }

  if (
    props.existingLoadBalancerObj &&
    props.existingLoadBalancerObj.listeners.length > 0 &&
    !props.ruleProps
  ) {
    errorFound = true;
    errorMessages += "When adding a second target to an existing listener, there must be rules provided\n";
  }

  // Check construct specific invalid inputs
  if (props.existingLoadBalancerObj && !props.existingVpc) {
    errorFound = true;
    errorMessages += "An existing ALB is already in a VPC, that VPC must be provided in props.existingVpc for the rest of the construct to use.\n";
  }

  if (props.loadBalancerProps?.vpc) {
    errorFound = true;
    errorMessages += 'Specify any existing VPC at the construct level, not within loadBalancerProps.\n';
  }

  if (props.existingLoadBalancerObj) {
    printWarning(
      "The public/private property of an existing ALB must match the props.publicApi setting provided."
    );
  }

  if (errorFound) {
    throw new Error(errorMessages);
  }
}