sync-on-llvm-version.yml

name: "Sync on LLVM version"

on:
  schedule:
    # Everyday at 00:00am
    # See https://docs.github.com/en/actions/reference/events-that-trigger-workflows#schedule
    - cron:  '0 0 * * *'

  workflow_dispatch:
    inputs:
      commit_hash:
        description: 'Commit hash to use without tests'
        required: true
        default: main
        type: string

permissions:
  # For release assets to be deletable we need this permission
  contents: write

jobs:

  # In order to re-build source snapshots and upload them, we must first delete
  # the old ones from today; otherwise there would be a conflict. As a measure
  # of not storing old snapshots for too long we'll delete older ones here as
  # well.
  regenerate-assets:
    name: "(Re)generate assets"
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 1

      - uses: ./.github/actions/prepare-python

      - name: "delete assets older than 33 days and from today"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          ./scripts/delete-assets.py \
            --token ${{ secrets.GITHUB_TOKEN }} \
            --project ${{ github.repository }} \
            --release-name snapshot-version-sync \
            --delete-older 33 \
            --delete-today

      - name: Determine good commit (on schedule only)
        uses: ./.github/actions/get-good-commit
        id: good-commit
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          checkout-path: .
          github-project: llvm/llvm-project
          start-ref: main
          max-tries: 100

      - name: "Generate snapshot version info"
        shell: bash -e {0}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          if [[ "${{github.event_name}}" == "workflow_dispatch"  ]]; then
            commit_hash=${{inputs.commit_hash}}
          else
            commit_hash=${{ steps.good-commit.outputs.good-commit }}
          fi

          if [[ "$commit_hash" =~ ^[0-9a-f]{40}$ ]]; then
            echo "commit_hash looks like a SHA1. No need to resolve: ${commit_hash}"
          else
            echo "commit_hash doesn't look like a SHA1 (maybe it is a branch or tag name). Trying to resolve it: ${commit_hash}"
            # See https://docs.github.com/de/rest/commits/commits?apiVersion=2022-11-28#list-branches-for-head-commit
            commit_hash=`curl -L \
              -H "Accept: application/vnd.github+json" \
              -H "Authorization: Bearer ${{env.GITHUB_TOKEN}}" \
              -H "X-GitHub-Api-Version: 2022-11-28" \
              https://api.github.com/repos/llvm/llvm-project/commits/${commit_hash}/branches-where-head \
            | jq -r '.[0].commit.sha'`
          fi

          echo "commit_hash=${commit_hash}" >> $GITHUB_ENV

          yyyymmdd=$(date +%Y%m%d)
          versionfile=LLVMVersion.cmake
          url=https://raw.githubusercontent.com/llvm/llvm-project/${commit_hash}/cmake/Modules/${versionfile}
          echo "Getting ${url}"
          curl -sL -o ${versionfile} ${url}

          echo "Version file:"
          cat ${versionfile}

          llvm_snapshot_git_revision=${commit_hash}
          llvm_snapshot_version=`grep -ioP 'set\(\s*LLVM_VERSION_(MAJOR|MINOR|PATCH)\s\K[0-9]+' ${versionfile} | paste -sd '.'`

          echo "${llvm_snapshot_version}" > llvm-release-${yyyymmdd}.txt
          echo "${llvm_snapshot_git_revision}" > llvm-git-revision-${yyyymmdd}.txt

          echo "llvm_release=`cat llvm-release-${yyyymmdd}.txt`"
          echo "llvm_git_revision=`cat llvm-git-revision-${yyyymmdd}.txt`"

          ./scripts/upload-source-snapshots.py \
            --token ${{ secrets.GITHUB_TOKEN }} \
            --project ${{ github.repository }} \
            --release-name snapshot-version-sync \
            --yyyymmdd "$(date +%Y%m%d)"