(All) Fields of DomainNameAttributes should be made optional

In order to be able to create an Alias record on Route53 with an API Gateway target, one needs to use the DomainNameAttributes interface. However, currently all fields of DomainNameAttributes are required, which makes it difficult to use.

Reproduction Steps

1. Create a public hosted zone on Route53.
2. Try to add an ARecord targeting an existing api gateway.
3. The ARecord constructor requires target field of type RecordTarget.
4. The RecordTarget constructor takes a field, aliasTarget, of type IAliasRecordTarget.
5. The constructor of ApiGatewayDomain, which implements IAliasRecordTarget, requires an argument of type, IDomainName.
6. An object of type IDomainName can be obtained by calling DomainName.fromDomainNameAttributes().
7. fromDomainNameAttributes() takes an argument of type DomainNameAttributes.
8. There is currently no easy way to construct a DomainNameAttributes object because all of its properties are required, domainName, domainNameAliasHostedZoneId, and domainNameAliasTarget.

Error Log

N/A

Environment

• CLI Version - 1.30.0 (build 4f54ff7) :
• Framework Version: 1.30.0 ;
• OS Ubuntu 18:
• Language Typescript:

Other

This is needed, among other things, to support naked domains (zone apex record) pointing to the API Gateway.

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This is 🐛 Bug Report

[bmVsc29u]

@nija-at’s solution is totally ok for certain use cases, but consider the scenario to manage route53 and api-gateway stacks separately in different repositories, the below seems impossible and even the documentation does not helped with such field domainNameAliasTarget:

// shorthands are given
 const d = DomainName.fromDomainNameAttributes(this, 'domain', {
            domainName,
            domainNameAliasTarget: **'what should I filled up for this?',**
            domainNameAliasHostedZoneId
        })
 const aliasApi = new ARecord(this, `alias.api`, {
            zone,
            recordName,
            target: RecordTarget.fromAlias(new ApiGatewayDomain(d)),
        });

[SomayaB]

Closing for now since there hasn’t been a response in a while. Feel free to reopen.