spec-update.yml

name: AWS Service Spec Update

on:
  schedule:
    # Every Monday at 13:37 UTC
    - cron: 37 13 * * 1
  workflow_dispatch: {}

jobs:
  update-spec:
    # this workflow will always fail in forks; bail if this isn't running in the upstream
    if: github.repository == 'aws/aws-cdk'
    name: Update AWS Service Spec packages
    permissions:
      contents: read
    runs-on: ubuntu-latest
    steps:
      - name: Check Out
        uses: actions/checkout@v4

      - name: Set up Node
        uses: actions/setup-node@v4
        with:
          node-version: "*"
        env:
          NODE_OPTIONS: "--max-old-space-size=8196 --experimental-worker ${NODE_OPTIONS:-}"

      # Install all current dependencies
      - name: Yarn Install
        run: yarn install --frozen-lockfile

      # Upload the current db to be used later
      - name: Upload base database
        uses: actions/upload-artifact@v4
        with:
          name: db.base.json.gz
          path: node_modules/@aws-cdk/aws-service-spec/db.json.gz
          if-no-files-found: error

      # Perform the actual upgrade of the relevant packages
      - name: Install ncu tool
        run: npm -g install lerna npm-check-updates
      - name: Run "ncu" for service spec packages
        run: lerna exec --parallel ncu -- --upgrade --filter='@aws-cdk/aws-service-spec,@aws-cdk/service-spec-importers,@aws-cdk/service-spec-types' --target=latest

      # This will ensure the current lockfile is up-to-date with the dependency specifications
      - name: Install latest version & update lockfile
        run: yarn upgrade @aws-cdk/aws-service-spec @aws-cdk/service-spec-importers @aws-cdk/service-spec-types

      # Now that we have updated the database, upload the new candidate db
      - name: Upload head database
        uses: actions/upload-artifact@v4
        with:
          name: db.head.json.gz
          path: node_modules/@aws-cdk/aws-service-spec/db.json.gz
          if-no-files-found: error

      # Build @aws-cdk/spec2cdk and run L1 gen script to generate base files for new modules
      - name: Build @aws-cdk/spec2cdk
        run: lerna run build --stream --no-progress --skip-nx-cache --scope @aws-cdk/spec2cdk
      - name: Generate L1s
        working-directory: packages/aws-cdk-lib
        run: yarn gen

      # Next, create and upload the changes as a patch file. This will later be downloaded to create a pull request
      # Creating a pull request requires write permissions and it's best to keep write privileges isolated.
      - name: Create Patch
        run: |-
          git add .
          git diff --patch --staged > ${{ runner.temp }}/update-spec.patch
      - name: Upload Patch
        uses: actions/upload-artifact@v4
        with:
          name: update-spec.patch
          path: ${{ runner.temp }}/update-spec.patch

  diff-db:
    needs: update-spec
    runs-on: ubuntu-latest
    permissions:
      contents: write
      id-token: none
      pull-requests: write
    env:
      CI: "true"
    steps:
      - name: Download base database
        uses: actions/download-artifact@v4
        with:
          name: db.base.json.gz
          path: base
      - name: Download head database
        uses: actions/download-artifact@v4
        with:
          name: db.head.json.gz
          path: head
      - name: Diff databases
        id: diff-db
        run: npx --yes --package=@aws-cdk/service-spec-importers@latest -c 'diff-db base/db.json.gz head/db.json.gz' > DIFF || echo "diff-result=true" >> $GITHUB_OUTPUT
        continue-on-error: true
      - name: Create PR body file
        run: |-
          echo 'Updates the L1 CloudFormation resource definitions with the latest changes from `@aws-cdk/aws-service-spec`' >> PR.md
      - name: Add model changelog to PR body file
        if: steps.diff-db.outputs.diff-result
        run: |-
          echo '' >> PR.md
          echo '**L1 CloudFormation resource definition changes:**' >> PR.md
          echo '```' >> PR.md
          cat DIFF >> PR.md
          echo '```' >> PR.md
      - name: Upload PR body file
        uses: actions/upload-artifact@v4
        with:
          name: PR.md
          path: PR.md
  pr:
    name: Create Pull Request
    needs:
      - update-spec
      - diff-db
    permissions:
      contents: write
      pull-requests: write
    runs-on: ubuntu-latest
    steps:
      - name: Check Out
        uses: actions/checkout@v4

      - name: Download patch
        uses: actions/download-artifact@v4
        with:
          name: update-spec.patch
          path: ${{ runner.temp }}

      - name: Apply patch
        run: '[ -s ${{ runner.temp }}/update-spec.patch ] && git apply ${{ runner.temp }}/update-spec.patch || echo "Empty patch. Skipping."'

      - name: Download PR body file
        uses: actions/download-artifact@v4
        with:
          name: PR.md
          path: ${{ runner.temp }}

      - name: Make Pull Request
        uses: peter-evans/create-pull-request@v6
        with:
          # Git commit details
          branch: automation/spec-update
          author: aws-cdk-automation <aws-cdk-automation@users.noreply.github.com>
          commit-message: |-
            feat: update L1 CloudFormation resource definitions
            Updates the L1 CloudFormation resource definitions with the latest changes from `@aws-cdk/aws-service-spec`
          # Pull Request details
          title: "feat: update L1 CloudFormation resource definitions"
          body-path: ${{ runner.temp }}/PR.md
          labels: contribution/core,dependencies,auto-approve,pr-linter/exempt-integ-test,pr-linter/exempt-readme,pr-linter/exempt-test
          team-reviewers: aws-cdk-team
          # Github prevents further Github actions to be run if the default Github token is used.
          # Instead use a privileged token here, so further GH actions can be triggered on this PR.
          token: ${{ secrets.PROJEN_GITHUB_TOKEN }}