Stack Artifact Parameters Ignored

[rabbittsoup]

The stack artifact in a manifest allows for passing codified parameters to the deploy phase. However, those parameters never seem to be merged into the parameters used at deploy time.

At deploy time, only the parameters specified on the command line, or those retrieved from a previously deployed stack in the cloud are used.

aws-cdk/packages/aws-cdk/lib/api/deploy-stack.ts

Line 217 in 8a949dc

? templateParams.updateExisting(finalParameterValues, cloudFormationStack.parameters)

[ryparker]

Hey @rabbittsoup 👋🏻

Are you still looking for guidance on this issue? If so, could you elaborate on what you mean by

"However, those parameters never seem to be merged into the parameters used at deploy time.".

Also an explanation of how you're checking this would be helpful.

[rabbittsoup]

Yes, this is still an open issue.

[rabbittsoup]

It's been a while since I looked at this. If I recall, the issue is that the cloud assembly stack artifact contains an interface for cloud formation parameters. However this interface is dropped during deployment, so it never gets merged into the deployment time stack parameters.

i.e. Setting parameters during synthesis is allowed, but never used.

aws-cdk/packages/@aws-cdk/cx-api/lib/artifacts/cloudformation-artifact.ts

Line 27 in ca20805

public readonly parameters: { [id: string]: string };

[peterwoodworth]

I'm not sure why i originally relabeled this as a guidance issue - Ryan or I will investigate this. Thanks for getting back quickly!

[peterwoodworth]

If this is still relevant, please open a bug report with more detail

[rabbittsoup]

Not sure what else to write in a bug report. Synthesis allows for setting artifact parameters as shown above. However, those input artifact parameters are never used. That's the bug.

[peterwoodworth]

If you could try to reproduce this on latest version, and provide reproduction steps + code that would be very helpful @rabbittsoup. That would best be tracked in a new bug report

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.