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README.md

LaunchDarkly Code References with GitHub Actions

This GitHub Action is a utility that automatically populates code references in LaunchDarkly. This is useful for finding references to feature flags in your code, both for reference and for code cleanup.

Configuration

Once you've created a LaunchDarkly access token, store the newly created access token as a repository secret titled LD_ACCESS_TOKEN. Under Settings > Secrets in your GitHub repo, you'll see a link to "Add a new secret". Click that and paste in your access token and click "Save secret".

(For help storing this see the GitHub docs.)

Next, create a new Actions workflow in your selected GitHub repository. If you don't already have a workflow file, you'll need to create a new file titled action.yml in the .github/workflows directory of your repository. Under "Edit new file", paste the following code:

on: push
name: Example Workflow
jobs:
  launchDarklyCodeReferences:
    name: LaunchDarkly Code References
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v1
    - name: LaunchDarkly Code References
      uses: launchdarkly/find-code-references@v2
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        LD_ACCESS_TOKEN: ${{ secrets.LD_ACCESS_TOKEN }}
        LD_PROJ_KEY: YOUR_PROJECT_KEY

We strongly recommend that you update the second uses attribute value to reference the latest tag in the launchdarkly/find-code-references repository. This will pin your workflow to a particular version of the launchdarkly/find-code-references action.

If you already have a action.yml file, copy and paste the above launchDarklyCodeReferences job declaration into the jobs section in your existing action.yml file. If you wish to verify that you've pasted the above correctly, you can go into the visual editor and ensure that there are no syntax errors. LD_PROJ_KEY refers to the key of the LaunchDarkly project associated with this repository.

Commit this file under a new branch. Submit as a PR to your code reviewers to be merged into your master branch. You do not need to have this branch merged into the master for code references to appear in the LaunchDarkly UI for your flags; code references will appear for this newly created branch.

As shown in the above example, the workflow should run on the push event, and contain an action provided by the launchdarkly/find-code-references repository. The LD_ACCESS_TOKEN configured in the previous step should be included as a secret, as well as a new environment variable containing your LaunchDarkly project key.

Troubleshooting

Once your workflow has been created, the best way to confirm that the workflow is executing correctly is to create a new pull request with the workflow file and verify that the newly created action succeeds.

If the action fails, there may be a problem with your configuration. To investigate, dig into the action's logs to view any error messages.

Additional Options

Additional configuration options for more environmental variables can be found at the bottom of the LaunchDarkly GitHub Action documentation.

For information about the underlying LaunchDarkly Code References command-line tool, take a look at this repository.

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