Artifacts via extraInputs on CodeBuildAction dont show up

I have two sources in my codepipeline project, S3 and Github. Those two sources are wired up in CodeBuildAction via input and extraInputs properties. That is, Github as input and S3 as extraInputs.

During build, only the content of the input property shows up. If i flip the input, the content of the other artifact show up, so its not an artifact issue per se.

Perhaps i am missing the intent of the property extraInputs but i ve seen tests in CDK repo which worked nearly the same. Unfortunately not much documentation on that prop out there.

Reproduction Steps

Create a GitHub Source:

githubSourceAction = new codepipeline_actions.GitHubSourceAction({
  ...
  output: sourceOutput,
)}

Create a S3 Source:

s3SourceAction = new codepipeline_actions.S3SourceAction({
  ...
  output: source2_Output
)}

Wiring together:

buildAction = new codepipeline_actions.CodeBuildAction({
   ...
  input: sourceOutput,
  extraInputs: [source2_Output],
});

Error Log

No error but just missing the artifact content in extraInputs during build.

Environment

• CDK Version : 1.34.1 (build 7b21aa0)
• OS : Mac OS X latest
• Language : typescript

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This is 🐛 Bug Report

[swyp-de]

Typescript inline documentation for the property would be nice btw.

[skinny85]

@EhsanHerai not sure what you mean by “CDK source code” exactly, but, in general, that environment variable will only exist in CodeBuild. So, you can access it inside the build script of the CodeBuild job.