AWS CodeBuild CODEBUILD_SOURCE_VERSION is incorrect

Question

I have a pull request open in my github repo that I have been pushing to. Normally, a push will trigger a new build in CodeBuild, with this variable set to the branch name ( pr/10 )

$CODEBUILD_SOURCE_VERSION

As of Oct 29th 2018, this variable now is always the commit SHA, which is breaking our build script. I think AWS might have deployed a bug?

Has anyone else experienced this?

Linghao Zhu · Accepted Answer · 2018-10-30 17:20:44Z

4

Thank you for using AWS CodeBuild. For builds triggered by GitHub pull request event via webhook, we changed the input source version from "pr/#" to the head commit SHA. You can find the pull request number ("pr/#") in $CODEBUILD_WEBHOOK_TRIGGER environment variable.

The $CODEBUILD_WEBHOOK_TRIGGER environment variable shows what triggers the webhook build, e.g. "pr/#", "branch/{branchName}", "tag/{tagName}".

answered Oct 30, 2018 at 17:20

Linghao Zhu

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1 Comment

mikestaub Over a year ago

Thanks for the timely reply. Is there a way I can be notified for future breaking changes to the service? A changelog perhaps

Subin Mathew · Accepted Answer · 2018-10-31 16:11:33Z

2

I wanted to clarify that this was an unintended change in behavior for the CODEBUILD_SOURCE_VERSION environment variable. We are rolling out a fix to return to the original behavior. We estimate this fix to be completely deployed in the next couple of days.

Thank you for promptly bringing it to our attention.

answered Oct 31, 2018 at 16:11

Subin Mathew

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2 Comments

mikestaub Over a year ago

I already changed my code to use the new $CODEBUILD_WEBHOOK_TRIGGER variable, will I have to revert those changes? Is there a way I can subscribe to breaking changes in the future?

Subin Mathew Over a year ago

The newly added CODEBUILD_WEBHOOK_TRIGGER will remain and would be the recommended way to get the details on what triggered the webhook. Restoring the original behavior for CODEBUILD_SOURCE_VERSION, so that customers who may have relied on that environment variable, as part of their build aren't left in a broken state. Hope that clarifies.

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