code-generation.yml

name: Code Generation

on:
  pull_request:
  workflow_dispatch:
  schedule:
    - cron: '0 0 * * 1' # 00:00 UTC Weekly on Mondays

jobs:
  up_to_date:
    name: Ensure Generated Code Up To Date
    if: github.event_name != 'schedule' || github.repository == 'opensearch-project/opensearch-java'
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    steps:
      - name: Checkout Java Client
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up JDK
        uses: actions/setup-java@v4
        with:
          java-version: 11
          distribution: 'temurin'
          cache: 'gradle'

      - name: Download Latest Spec
        if: github.event_name != 'pull_request'
        run: ./gradlew :java-codegen:downloadLatestSpec

      - name: Run Code Generator
        run: ./gradlew :java-codegen:run

      - name: Git Status
        id: status
        shell: bash -eo pipefail {0}
        run: |
          echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
          
          output=$(git status --porcelain)
          if [ -z "$output" ]; then
            echo "Clean working directory"
            echo "clean=true" >> $GITHUB_OUTPUT
          else
            echo "Dirty working directory"
            echo "$output"
            echo "clean=false" >> $GITHUB_OUTPUT
          fi

      - name: Fail On Uncommitted Changes
        if: github.event_name == 'pull_request' && steps.status.outputs.clean != 'true'
        run: exit 1

      - name: Generate GitHub App Token
        if: github.repository == 'opensearch-project/opensearch-java' && github.event_name != 'pull_request' && steps.status.outputs.clean != 'true'
        id: github_app_token
        uses: tibdex/github-app-token@v1.5.0
        with:
          app_id: ${{ secrets.APP_ID }}
          private_key: ${{ secrets.APP_PRIVATE_KEY }}
          installation_id: 22958780

      - name: Create Pull Request
        if:  github.event_name != 'pull_request' && steps.status.outputs.clean != 'true'
        uses: peter-evans/create-pull-request@v6
        with:
          token: ${{ steps.github_app_token.outputs.token || secrets.GITHUB_TOKEN }}
          commit-message: Re-generate client code using latest OpenSearch API specification (${{ steps.status.outputs.date }})
          title: Re-generated client code using latest OpenSearch API specification
          body: |
            Re-generated client code using latest OpenSearch API specification.
            Date: ${{ steps.status.outputs.date }}
          branch: code-gen/${{ github.ref_name }}/update
          signoff: true
          labels: |
            autocut