feat(route53): Expose VpcEndpointServiceDomainName domain name as a property

packages/@aws-cdk/aws-route53/lib/vpc-endpoint-service-domain-name.ts

@@ -46,6 +46,11 @@ export class VpcEndpointServiceDomainName extends CoreConstruct {
   // Track all domain names created, so someone doesn't accidentally associate two domains with a single service
   private static readonly endpointServicesMap: { [endpointService: string]: string} = {};
 
+  /**
+   * The domain name associated with the private DNS configuration
+   */
+  public domainName: string;
+
   // The way this class works is by using three custom resources and a TxtRecord in conjunction
   // The first custom resource tells the VPC endpoint service to use the given DNS name
   // The VPC endpoint service will then say:
@@ -58,16 +63,16 @@ export class VpcEndpointServiceDomainName extends CoreConstruct {
 
     const serviceUniqueId = Names.nodeUniqueId(props.endpointService.node);
     const serviceId = props.endpointService.vpcEndpointServiceId;
-    const privateDnsName = props.domainName;
+    this.domainName = props.domainName;
 
     // Make sure a user doesn't accidentally add multiple domains
     this.validateProps(props);
 
-    VpcEndpointServiceDomainName.endpointServicesMap[serviceUniqueId] = privateDnsName;
+    VpcEndpointServiceDomainName.endpointServicesMap[serviceUniqueId] = this.domainName;
     VpcEndpointServiceDomainName.endpointServices.push(props.endpointService);
 
     // Enable Private DNS on the endpoint service and retrieve the AWS-generated configuration
-    const privateDnsConfiguration = this.getPrivateDnsConfiguration(serviceUniqueId, serviceId, privateDnsName);
+    const privateDnsConfiguration = this.getPrivateDnsConfiguration(serviceUniqueId, serviceId, this.domainName);
 
     // Tell AWS to verify that this account owns the domain attached to the service
     this.verifyPrivateDnsConfiguration(privateDnsConfiguration, props.publicHostedZone);

packages/@aws-cdk/aws-route53/test/vpc-endpoint-service-domain-name.test.ts

@@ -264,4 +264,20 @@ test('throws if creating multiple domains for a single service', () => {
       publicHostedZone: zone,
     });
   }).toThrow(/Cannot create a VpcEndpointServiceDomainName for service/);
+});
+
+
+test('endpoint domain name property equals input domain name', () => {
+  // GIVEN
+  vpces = new VpcEndpointService(stack, 'NameTest', {
+    vpcEndpointServiceLoadBalancers: [nlb],
+  });
+
+  const dn = new VpcEndpointServiceDomainName(stack, 'EndpointDomain', {
+    endpointService: vpces,
+    domainName: 'name-test.aws-cdk.dev',
+    publicHostedZone: zone,
+  });
+  expect(dn.domainName).toEqual('name-test.aws-cdk.dev');
+
 });