upload-legacy-ami.yml

name: Upload Legacy Amazon Image
permissions:
  contents: read
on:
  pull_request:
  workflow_dispatch:
  schedule:
    - cron: "0 0 * * 0"
jobs:
  upload-ami:
    name: Upload Legacy Amazon Image
    runs-on: ubuntu-latest
    environment: images
    permissions:
      contents: read
      id-token: write
    strategy:
      matrix:
        release:
          - release-24.05
          - release-24.11
          # - nixos-unstable
        system:
          - x86_64-linux
          - aarch64-linux
    steps:
      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
      - uses: DeterminateSystems/nix-installer-action@7993355175c2765e5733dae74f3e0786fe0e5c4f # v12
      - uses: DeterminateSystems/magic-nix-cache-action@87b14cf437d03d37989d87f0fa5ce4f5dc1a330b # v8
      # NOTE: We download the AMI from Hydra instead of building it ourselves
      # because aarch64 is currently not supported by AWS EC2 and the legacy
      # image builder requires nested virtualization.
      - name: Download AMI from Hydra
        id: download_ami
        run: |
          set -o pipefail
          build_id=$(curl -sSfL -H 'Accept: application/json' https://hydra.nixos.org/job/nixos/${{ matrix.release }}/tested/latest-finished | jq -r '.id')
          out=$(curl -sSfL -H 'Accept: application/json' "https://hydra.nixos.org/build/${build_id}/constituents"  | jq -r '.[] | select(.job == "nixos.amazonImage.${{ matrix.system }}") | .buildoutputs.out.path')
          nix-store --realise "$out" --add-root ./result
          echo "image_info=$out/nix-support/image-info.json" >> "$GITHUB_OUTPUT"

      - uses: aws-actions/configure-aws-credentials@e3dd6a429d7300a6a4c196c26e071d42e0343502 # v4.0.2
        with:
          role-to-assume: arn:aws:iam::${{ vars.AWS_ACCOUNT_ID }}:role/upload-ami
          aws-region: ${{ vars.AWS_REGION }}

      - name: Upload Smoke test AMI
        id: upload_smoke_test_ami
        run: |
          image_info='${{ steps.download_ami.outputs.image_info }}'
          images_bucket='${{ vars.IMAGES_BUCKET }}'
          image_ids=$(nix run .#upload-ami -- \
            --image-info "$image_info" \
            --prefix "smoketest/" \
            --s3-bucket "$images_bucket")
          echo "image_ids=$image_ids" >> "$GITHUB_OUTPUT"

      - name: Smoke test
        id: smoke_test
        # NOTE: make sure smoke test isn't cancelled. Such that instance gets cleaned up.
        run: |
          image_ids='${{ steps.upload_smoke_test_ami.outputs.image_ids }}'
          image_id=$(echo "$image_ids" | jq -r '.["${{ vars.AWS_REGION }}"]')
          nix run .#smoke-test -- --image-id "$image_id"

      - name: Clean up smoke test
        if: ${{ cancelled() }}
        run: |
          image_ids='${{ steps.upload_smoke_test_ami.outputs.image_ids }}'
          image_id=$(echo "$image_ids" | jq -r '.["${{ vars.AWS_REGION }}"]')
          nix run .#smoke-test -- --image-id "$image_id" --cancel

      # NOTE: We do not pass run-id as we're not  building the image ourselves
      # and we thus need to poll hydra periodically.  Including the run-id would
      # cause us to register  the same snapshot as an image over and over again
      # for each run.
      - name: Upload AMIs to all available regions
        if: github.ref == 'refs/heads/main'
        run: |
          image_info='${{ steps.download_ami.outputs.image_info }}'
          images_bucket='${{ vars.IMAGES_BUCKET }}'
          nix run .#upload-ami -- \
            --image-info "$image_info" \
            --prefix "nixos/" \
            --s3-bucket "$images_bucket" \
            --copy-to-regions \
            --public

  delete-deprecated-images:
    name: Deploy images page
    if: github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    needs: upload-ami
    environment: images
    steps:
      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
      - uses: DeterminateSystems/nix-installer-action@7993355175c2765e5733dae74f3e0786fe0e5c4f # v12
      - uses: DeterminateSystems/magic-nix-cache-action@87b14cf437d03d37989d87f0fa5ce4f5dc1a330b # v8
      - uses: aws-actions/configure-aws-credentials@e3dd6a429d7300a6a4c196c26e071d42e0343502 # v4.0.1
        with:
          role-to-assume: arn:aws:iam::${{ vars.AWS_ACCOUNT_ID }}:role/github-pages
          aws-region: ${{ vars.AWS_REGION }}
      - name: Delete deprecated AMIs
        if: github.ref == 'refs/heads/main'
        run: |
          nix run .#delete-deprecated-images 

  deploy-pages:
    name: Deploy images page
    if: github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    needs: [ upload-ami, delete-deprecated-images ]
    permissions:
      contents: read
      id-token: write
      pages: write
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    steps:
      - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
      - uses: DeterminateSystems/nix-installer-action@7993355175c2765e5733dae74f3e0786fe0e5c4f # v12
      - uses: DeterminateSystems/magic-nix-cache-action@87b14cf437d03d37989d87f0fa5ce4f5dc1a330b # v8
      - uses: aws-actions/configure-aws-credentials@e3dd6a429d7300a6a4c196c26e071d42e0343502 # v4.0.1
        with:
          role-to-assume: arn:aws:iam::${{ vars.AWS_ACCOUNT_ID }}:role/github-pages
          aws-region: ${{ vars.AWS_REGION }}
      - name: Describe images
        run: nix run .#describe-images > ./site/images.json
      - name: Upload pages
        uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa # v3.0.1
        with:
          path: ./site
      - name: Deploy pages
        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4.0.5
        id: deployment
        if: github.ref == 'refs/heads/main'