regenerate-cache.yml

name: Regenerate cache

on:
  schedule:
    # Daily
    - cron: '23 4 * * *'

jobs:
  regenerate-cache:
    permissions:
      actions: write
    runs-on: ubuntu-latest
    steps:
      - name: Delete prior caches
        run: |
          gh extension install actions/gh-actions-cache

          echo "Fetching prior cache keys"
          cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH -L 100 | cut -f 1 )

          ## Setting this to not fail the workflow while deleting cache keys.
          set +e
          echo "Deleting prior caches..."
          for cacheKey in $cacheKeysForPR
          do
              gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
          done
          echo "Done"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          REPO: ${{ github.repository }}
          BRANCH: ${{ github.ref }}
      # Caches and restores the bazelisk download directory, the bazel build directory.
      - name: Cache bazel
        uses: actions/cache@v4
        env:
          cache-name: bazel-cache
        with:
          path: |
            ~/.cache/bazelisk
            ~/.cache/bazel
            ~/.cache/bazel-repo
          key: ${{ runner.os }}-${{ env.cache-name }}-${{ github.ref }}-${{ github.sha }}
          # Pull caches from:
          # - The current sha,
          # - The current branch,
          # - base branch
          restore-keys: |
            ${{ runner.os }}-${{ env.cache-name }}-${{ github.ref }}-${{ github.sha }}
            ${{ runner.os }}-${{ env.cache-name }}-${{ github.ref }}-
            ${{ runner.os }}-${{ env.cache-name }}-refs/heads/${{ github.base_ref }}-
      - name: Checkout
        uses: actions/checkout@v4
      - name: Bazel clean
        run: bazel --bazelrc=.github/workflows/ci.bazelrc --bazelrc=.bazelrc clean --expunge
      - name: bazel test //...
        run: bazel --bazelrc=.github/workflows/ci.bazelrc --bazelrc=.bazelrc test //...