linearize_main.yaml

name: linearize_main

on:
  schedule:
    # GMT timezone.
    - cron: '0 10 * * *'
  workflow_dispatch:

permissions: read-all

jobs:
  trigger_linearize:
    runs-on: [self-hosted, chrobalt-linux-runner-with-cache]
    permissions:
      contents: write
    steps:
      - name: Checkout main
        uses: actions/checkout@v4
        with:
          ref: main
          fetch-tags: true
          fetch-depth: 0
      - name: Checkout rebase_tools
        uses: actions/checkout@v4
        with:
          ref: experimental/rebase_tools
      - uses: actions/setup-python@v5
        with:
          python-version: '3.9'
          cache: 'pip'
      - name: Install rebase_tools
        run: |
          set -eux
          pip install -r requirements.txt
      - name: Setup Git
        run: |
          git config --global user.name "GitHub Release Automation"
          git config --global user.email "github@google.com"
      - name: Run linearize
        run: |
          set -eux
          python main.py linearize --repo-path=${GITHUB_WORKSPACE} --source-branch=main --new-branch-name=automated/linear_main \
            --start-commit-ref="$(git rev-parse --verify post-chrobalt-tag)" --end-commit-ref="$(git rev-parse --verify origin/main)"
      - name: Update automated/linear_main and commit map, extract m114 commits
        run: |
          set -eux
          git push --force origin automated/linear_main:automated/linear_main

          # Pull from experimental/rebase_tools incase something changed
          git checkout experimental/rebase_tools
          git fetch origin experimental/rebase_tools
          git pull origin experimental/rebase_tools --rebase

          # Create new commits json for m114
          python main.py commits --repo-path=${GITHUB_WORKSPACE} --source-branch=origin/automated/linear_main \
            --start-commit-ref="$(git rev-parse --verify post-chrobalt-tag)" --end-commit-ref="$(git rev-parse --verify origin/automated/linear_main)" \
            --output-file=${GITHUB_WORKSPACE}/automated_commits_m114.json
          git add automated_commits_m114.json
          git stash
          git checkout experimental/rebase_tools
          rm -rf automated_commits_m114.json
          git checkout stash -- automated_commits_m114.json
          git add --ignore-removal automated_commits_m114.json
          if git diff --quiet --cached; then
            echo "No changes detected. Nothing to update."
          else
            git commit -m "Linearization refresh on $(date +'%Y-%m-%d')."
            git push --force origin experimental/rebase_tools:experimental/rebase_tools
          fi