get-values.yaml

# ============== WARNING ==============================================================================
# File is managed by copier template: gh:LabAutomationAndScreening/copier-base-template.git
# See .config/.copier-managed-files.json for details.
#
# You are welcome to make changes to this file in your repo if they are custom to your project,
# but if the change should be shared with other projects, please backport it to the template repo.
# =====================================================================================================
name: Get Values

on:
  workflow_call:
    outputs:
      new-dependabot-sha:
        description: BUILD_HASH
        value: ${{ jobs.get-values.outputs.new-dependabot-sha }}
      dependabot-commit-created:
        description: whether or not a commit was created on a dependabot branch
        value: ${{ jobs.get-values.outputs.dependabot-commit-created }}
      pr-short-num:
        description: the last two digits of the PR number (to be used for fixed width naming, like Pulumi stacks)
        value: ${{ jobs.get-values.outputs.pr-short-num }}

env:
  PYTHONUNBUFFERED: True

permissions:
  contents: write # needed to push commit of new devcontainer hash for dependabot PRs

jobs:
  get-values:
    runs-on: ubuntu-24.04
    timeout-minutes: 2
    outputs:
      new-dependabot-sha: ${{ steps.update-hash.outputs.new-sha }}
      dependabot-commit-created: ${{ steps.update-hash.outputs.commit-created }}
      pr-short-num: ${{ steps.find-pr-num.outputs.number }}
    steps:
      - name: Display full GitHub context
        run: |
          jq . <<'JSON'
          ${{ toJSON(github) }}
          JSON

      - name: Checkout code
        uses: actions/checkout@v7.0.1
        with:
          persist-credentials: false

      - name: Update Devcontainer Hash
        if: ${{ github.actor == 'dependabot[bot]' && github.event_name == 'push' }}
        id: update-hash
        uses: ./.github/actions/update-devcontainer-hash
        with:
          branch: ${{ github.ref_name }}
      - name: Get the PR number
        if: ${{ github.event_name == 'pull_request' || github.event_name == 'merge_group' }}
        id: find-pr-num
        # Based on https://github.com/actions/checkout/issues/58#issuecomment-847922894
        env:
          MERGE_MSG: ${{ github.event.merge_group.head_commit.message }}
        run: |

          [[ '${{ github.event_name }}' = 'pull_request' ]] && full_number=${{ github.event.number }}

          # example message in merge group context: "Merge pull request #10 from org-name/branch-name\n\ncommit message"
          if [[ '${{ github.event_name }}' = 'merge_group' ]]; then
            message="$MERGE_MSG"
            echo "Extracting from $message"
            number_and_following_text="${message##*#}"
            full_number="${number_and_following_text%%[!0-9]*}"
          fi

          short_number=${full_number:${#full_number}<2?0:-2} # only use the last two digits so that the stack name is no more than 7 characters and doesn't get too long. Based on https://stackoverflow.com/questions/19858600/accessing-last-x-characters-of-a-string-in-bash

          echo number=$(echo $short_number) >> $GITHUB_OUTPUT
          echo "PR number extracted as $full_number and truncated to $short_number"