add-override.yml

---
name: Add package override
on:
  workflow_dispatch:
    inputs:
      target:
        description: Target branch
        default: testing-devel
      what:
        description: "Bodhi update (fast-track) or SRPM NVR (pin)"
      pin:
        description: "Pin (don't remove when stable)"
        type: boolean
      reason:
        description: "Reason URL (optional for routine fast-tracks)"

permissions:
  # none at all
  contents: none

# This workflow could almost use the default GITHUB_TOKEN, if we were to
# push the branch into this repo.  However, GitHub Actions has recursion
# avoidance that would prevent CI from running on the PR:
#
# https://github.com/peter-evans/create-pull-request/blob/28fa4848947e/docs/concepts-guidelines.md#workarounds-to-trigger-further-workflow-runs
#
# So we create the PR using a separate Personal Access Token in
# COREOSBOT_RELENG_TOKEN, belonging to a machine account.  That allows CI to
# run when the PR is first created.  However, it's also possible to rerun
# the workflow and have it force-push the branch, reusing the same PR.  In
# that case the push also cannot come from GITHUB_TOKEN, or CI will not
# rerun.  Thus we also do the push using COREOSBOT_RELENG_TOKEN.  Since we
# don't want to give the machine account privileges to this repo, we push
# to a forked repo owned by the machine account.

jobs:
  add-override:
    name: Add package override
    runs-on: ubuntu-latest
    container: registry.fedoraproject.org/fedora:latest
    steps:
      - name: Install dependencies
        run: dnf install -y git jq python3-bodhi-client python3-pyyaml
      - name: Check out repository
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.inputs.target }}
          # We need an unbroken commit chain when pushing to the fork.  Don't
          # make assumptions about which commits are already available there.
          fetch-depth: 0
      # https://github.com/actions/checkout/issues/766
      - name: Mark git checkout as safe
        run: git config --global --add safe.directory "$GITHUB_WORKSPACE"
      - name: Update metadata
        env:
          TARGET: ${{ github.event.inputs.target }}
          WHAT: ${{ github.event.inputs.what }}
          PIN: ${{ github.event.inputs.pin }}
          REASON: ${{ github.event.inputs.reason }}
        run: |
          set -euxo pipefail

          if [ "${PIN}" = true ]; then
              ci/overrides.py pin "${WHAT}" -r "${REASON}"
              title="overrides: pin ${WHAT}"
          else
              ci/overrides.py fast-track "${WHAT}" ${REASON:+-r "${REASON}"}
              srpms=$(ci/overrides.py srpms "${WHAT}" | paste -sd,)
              title="overrides: fast-track ${srpms//,/, }"
          fi

          if [ "${TARGET}" = testing-devel ]; then
              pr_title="${title}"
          else
              pr_title="[${TARGET}] ${title}"
          fi
          branch_name=override-$(echo "${TARGET}:${title}" | sha256sum | cut -c1-8)

          echo "BRANCH_NAME=${branch_name}" >> ${GITHUB_ENV}
          echo "COMMIT_TITLE=${title}" >> ${GITHUB_ENV}
          echo "PR_TITLE=${pr_title}" >> ${GITHUB_ENV}
      - name: Open pull request
        uses: peter-evans/create-pull-request@v4.2.3
        with:
          token: ${{ secrets.COREOSBOT_RELENG_TOKEN }}
          branch: ${{ env.BRANCH_NAME }}
          commit-message: ${{ env.COMMIT_TITLE }}
          push-to-fork: coreosbot-releng/fedora-coreos-config
          title: ${{ env.PR_TITLE }}
          body: "Requested by @${{ github.actor }} via [GitHub workflow](${{ github.server_url }}/${{ github.repository }}/actions/workflows/add-override.yml) ([source](${{ github.server_url }}/${{ github.repository }}/blob/testing-devel/.github/workflows/add-override.yml))."
          committer: "CoreOS Bot <coreosbot@fedoraproject.org>"
          author: "CoreOS Bot <coreosbot@fedoraproject.org>"
          delete-branch: true