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 Is Up To Date
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Java Client
        uses: actions/checkout@v4

      - name: Set up JDK
        uses: actions/setup-java@v4
        with:
          java-version: 21
          distribution: 'temurin'
          cache: 'gradle'

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

      - name: Check For Uncommitted Changes
        shell: bash -eo pipefail {0}
        run: |
          output=$(git status --porcelain)
          if [ -z "$output" ]; then
            echo "Clean working directory"
            exit 0
          else
            echo "Dirty working directory"
            echo "$output"
            exit 1
          fi


  update_spec:
    name: Update Specification and Re-generate Code
    if: github.event_name == 'workflow_dispatch' || (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

      - name: Set up JDK
        uses: actions/setup-java@v4
        with:
          java-version: 21
          distribution: 'temurin'
          cache: 'gradle'

      - name: Download Latest Spec && Run Code Generator
        run: ./gradlew :java-codegen:downloadLatestSpec :java-codegen:run

      - name: Get Current Date
        id: date
        run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT

      - name: Generate GitHub App Token
        if: github.repository == 'opensearch-project/opensearch-java'
        id: github_app_token
        uses: tibdex/github-app-token@v2.1.0
        with:
          app_id: ${{ secrets.APP_ID }}
          private_key: ${{ secrets.APP_PRIVATE_KEY }}
          installation_id: 22958780

      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v7
        with:
          token: ${{ steps.github_app_token.outputs.token || secrets.GITHUB_TOKEN }}
          committer: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
          author: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
          commit-message: Re-generate client code using latest OpenSearch API specification (${{ steps.date.outputs.date }})
          title: Re-generated client code using latest OpenSearch API specification
          body: |
            Re-generated client code using latest OpenSearch API specification.
            Date: ${{ steps.date.outputs.date }}
          branch: code-gen/${{ github.ref_name }}/update
          signoff: true
          labels: |
            autocut