(aws-ec2): Create non-synth VPC constructor usable in service catalog products

[jeffb4]

Describe the feature

Create a VPC constructor similar to ec2.Vpc.from_lookup that can use dynamic (or static) references without doing any synth-time lookup.

Use Case

I would like to use CDK to define a servicecatalog product that is shared with an entire ou. It therefore needs a CloudFormation render that doesn't depend on synth-time lookups. This is, generally, possible with CDK L2 constructs EXCEPT that many things depend on ec2.Vpc and providing such an object that uses CFN dynamic references (or parameter references) is non-obvious. A constructor for Vpc that lets the invoker specify vpc id, private subnets, public subnets, etc as references would enable existing L2 constructs to be used in servicecatalog.ProductStack stacks.

Proposed Solution

ec2.Vpc.from_references(stack, vpc_id="vpc-foo", public_subnets=["foo","bar","baz"])

Other Information

No response

Acknowledgements

• [ ] I may be able to implement this feature request
• [ ] This feature might incur a breaking change

CDK version used

2.53.0

Environment details (OS name and version, etc.)

Linux docker-desktop 5.15.49-linuxkit #1 SMP Tue Sep 13 07:51:46 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

[jeffb4]

Uh, you know, looking at the ec2.Vpc. fromVpcAttributes source code, that's the exact intent of that constructor so I'll close this. I guess a blurb in the docs about the "right" way to use that constructor might have prevented this question, but who knows. Sorry for the noise!

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