Bypassing the CallerIdentity validation for running tests

[grameshtwilio]

Is your feature request related to a problem?
I would like to test some of the ACK controllers with my localstack environment where I pass test credentials to the controller as environment variables. However, the controller errors at this line

Describe the solution you'd like
If a config variable such as AWS_ACCOUNT_ID is set, then the GetCallerIdentity validation is skipped.

Describe alternatives you've considered
Any alternate suggestion to achieve the same goal is perfect

[a-hilaly]

We used to have a --aws-acount-id flag before. I'm not against bringing it back and using it if GetCallerIdentity fails somehow. @aws-controllers-k8s/runtime-maintainer thoughts?

[grameshtwilio]

I found the PR that removed the --aws-account-id flag. It would be great to get it back or enabling something along the lines of a--local-run flag that skips the validation check

[a-hilaly]

I don't think it's safe to add flag that skips all validation checks on a binary that will be running on production.. however i don't see a problem with using --aws-account-id to override/default a value. In the mean time you can use a custom runtime library for your tests. Most of the controllers have a local go.mod file that replaces the upstream runtime module with your local one https://github.com/aws-controllers-k8s/s3-controller/blob/main/go.local.mod#L5

You can also building controller images using the local go.mod file by using make build-local-controller-image

[jaypipes]

Hi @grameshtwilio! Sorry for delay in commenting on this.

I'm not in favor of adding back the --aws-account-id CLI arg for the reasons noted in the PR you linked: it was causing confusion for users during the install/startup process.

I'm similarly not keen to add a flag that skips verification steps for the same reasons that @a-hilaly mentioned.

From looking at the localstack docs, it looks like you can have localstack run STS (by default on localhost port 4592). You can then simply pass --endpoint-url as https://localhost:4592 and should be good to go. :)

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