update-src-mirror.yml

name: update-src-mirror

on:
  push:
    branches:
      - develop

permissions:
  id-token: write  # Required for AWS OIDC authentication
  contents: read

jobs:
  update-mirror:
    if: github.repository == 'spack/spack-packages'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
        with:
          # Depth 2 is required for this check
          fetch-depth: 2

      - name: Checkout Spack
        uses: ./.github/actions/checkout-spack
        with:
          fetch-depth: 1

      - name: Create source mirror
        id: create-mirror
        run: |
          source spack-core/share/spack/setup-env.sh

          # Create source mirror for changed specs
          SPECS=$(spack repo show-version-updates \
            --no-manual-packages \
            --only-redistributable \
            --no-git-versions \
            builtin \
            "${{ github.event.before }}" \
            "${{ github.event.after }}")

          if [ -z "$SPECS" ]; then
            echo "No specs to mirror"
            echo "new-specs=false" >> $GITHUB_OUTPUT
            exit 0
          fi

          echo "Creating mirror for:"
          echo "$SPECS"
          spack -c concretizer:unify:false mirror create -d src-mirror $SPECS
          echo "new-specs=true" >> $GITHUB_OUTPUT

      - name: Configure AWS credentials
        if: steps.create-mirror.outputs.new-specs == 'true'
        uses: aws-actions/configure-aws-credentials@d979d5b3a71173a29b74b5b88418bfda9437d885  # v6.1.1
        with:
          role-to-assume: ${{ secrets.AWS_ROLE_ARN }}
          aws-region: ${{ secrets.AWS_REGION }}

      - name: Upload to S3
        if: steps.create-mirror.outputs.new-specs == 'true'
        run: |
          aws s3 cp src-mirror/_source-cache s3://${{ secrets.S3_BUCKET_NAME }}/_source-cache/ \
            --no-overwrite \
            --recursive \
            --no-progress
          echo "Successfully uploaded source mirror to S3"