Region Info: Cound not insert new fact from a Java process

[RomainMuller]

What is the problem?

Attempting to register new Fact instances into the region info database is very inconvenient in Java, as a full-on implementation of an interface has to be rolled out (where a Struct would have been enough), and it also does not appear to work.

Reproduction Steps

Attempted to add a new custom class as an IFact implementation to the region info database - it did not appear to work.

What did you expect to happen?

Expected the fact to be registered and the behavior of the app to change according to that.

What actually happened?

The behavior of the app did not change.

CDK CLI Version

1.122.0

Framework Version

No response

Node.js Version

12.x

OS

Linux

Language

Java

Language Version

8

Other information

No response

[RomainMuller]

So it turns out the reason why the custom fact was not used is because the stack that used it was likely "region-agnostic", so it could not use a registered fact and instead used the default value.

In this case, the proper avenues to address this are:

• rfc: changes to default stack environments #4131
• Improved ergonomics for stack default environment aws-cdk-rfcs#58

[rix0rrr]

Closing this then.

[github-actions]

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