Feature flagging via the GitHub API #856
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As suggested in review: The `GITHUB_REPOSITORY` environment variable is only available on Actions. Passing it in explicitly avoids potentially crashing if this code is called from the runner.
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aeisenberg
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Dec 15, 2021
Replaces the previous string literal type
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This PR introduces feature flagging to the CodeQL Action via a GitHub API endpoint
/repositories/:repository_id/code-scanning/codeql-action/features(see backlinked issue). This API endpoint only exists on Dotcom, so for GHES and GHAE feature flags will all be marked as disabled.This is a general purpose solution that'll allow us to add many feature flags to the CodeQL Action while only calling a single API endpoint. In this PR we use this mechanism to replace the database uploading feature flags; in the future we'll use it to decide whether to run ML-powered queries.
I've written some unit tests for the feature flagging class, and verified that database upload works as expected on a repo with the feature flag enabled. Ideas for further testing welcome.
Merge / deployment checklist