Dynamic label creation from path

[mwarkentin]

Description:
We have a directory structure in our repo which looks like this:

k8s
|-> services
  |-> analytics
  |-> catalog
  |-> consul
  ...

It would be great if I could define a "matcher" pattern that could pull part of the path out, and use that in the label name.

k8s/service/[service]:
- k8s/services/**[service]/*

Justification:

This would give us a way to automatically label services without having to remember to update the labeler.yml file each time we add a new path.

Are you willing to submit a PR?
Don't have time right now, just an idea.

[MaksimZhukov]

Hello @mwarkentin! Thank you!
We will consider adding this feature and will contact you as soon as we have any updates!

[elfaraorigo]

@mwarkentin we were looking into a similar issue where we wanted labels based on folders

Temporarily solved it like this until some future version of labeler presents a better option

    - name: Update labeler.yml
      run: |
        find infrastructure -type d | grep -v '/\.' | awk -F'/' 'NF>2' | jq -R -s -c 'split("\n")[:-1]' > folders.json
        
        touch ${{ env.yamlfile }}
        echo "Add defaults to ${{ env.yamlfile }}"
        cat > ${{ env.yamlfile }} << EOF
        workflow-change:
          - changed-files:
            - any-glob-to-any-file: '.github/workflows/*'
        EOF

        echo "Add dynamic folder labels to ${{ env.yamlfile }}"
        jq -r '.[] | select(startswith("infrastructure"))' folders.json | while read folder; do
          label="${folder#infrastructure/}"
          label="${label//\//-}"
          label="${label//production/prd}"
          label="${label//staging/stg}"
          if [ "${#label}" -gt 63 ]; then
              echo "Label is longer than 63 characters: $label"
              label="${label:0:63}"
              echo "Trimmed label to 63 characters: $label"
          else
              echo "- $folder -> $label"
          fi

          echo "- $folder -> $label"

          cat >> ${{ env.yamlfile }} << EOF
        $label:
          - changed-files:
            - any-glob-to-any-file: '$folder/*'
        EOF
        done

        echo "Output file"
        cat ${{ env.yamlfile }}
      shell: bash

    - uses: actions/labeler@v5
      with:
        sync-labels: true

Could probably be cleaned up a bit more, but it does its job for now