CDK followSymlinks not supported

[vieirai]

CDK followSymlinks not supported

[hnnasit]

Hi @vieirai, thanks for opening the issue. I'm trying to understand this more. I tried playing around with an image type lambda function and followSymlinks enum value and observed that on running cdk synth, the symlinks followed are based on the value set for followSymlinks. E.g. Setting it to NEVER and running sam build or sam local invoke does not follow the symlink and it can't find the Dockerfile, whereas setting it to ALWAYS or EXTERNAL allows the symlink to be followed and find the Dockerfile. Could you elaborate on what support are you looking for with the followSymlinks property for sam local commands and maybe provide an example of how it would work?

[vieirai]

Hi @hnnasit , thank you for looking into this.
I can confirm it does work as expected.

In short our project was doing:

cdk synth SymlinkStack --no-staging > template.yml
sam build symlink
sam local invoke symlink

And this way it does not resolve the symlink references and we end up with broken files inside the container.
Looks like we were trying to be too smart and avoid having to pass the template path, and it ended up causing problems.

I can confirm that if we follow the docs example and do:

cdk synth
sam build -t cdk.out/SymlinkStack.template.json symlink
sam local invoke -t cdk.out/SymlinkStack.template.json symlink

Then it does work.

Not sure if this is worth highlighting in the docs or not, but either way I'm happy for you to resolve this.