java.yml

name: Java
run-name: ${{ github.event.head_commit.message || github.event.pull_request.title || format('{0} · {1}', github.ref_name, github.sha) }}

env:
  HEAD_COMMIT_MESSAGE: ${{ github.event.head_commit.message }}

on:
  workflow_dispatch:
  push:
    branches: [ main, master ]
  pull_request:
    branches: [ main, master ]

permissions:
  contents: write

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
  cancel-in-progress: ${{ !contains(github.event.head_commit.message, '[Automated changes]') }}

jobs:
  build:
    runs-on: [ self-hosted, linux, x64, java ]
    if: ${{ !startsWith(github.event.head_commit.message, 'Update changelog for') && !startsWith(github.event.head_commit.message, '[Automated changes]') && !contains(github.event.head_commit.message, 'Merge branch ''master'' of https://github.com/ccxt/ccxt') }}
    timeout-minutes: 30
    steps:
    - name: Generate App token
      if: github.ref == 'refs/heads/master'
      id: app-token
      uses: actions/create-github-app-token@v3
      with:
        client-id: ${{ secrets.CCXT_APP_CLIENT_ID }}
        private-key: ${{ secrets.CCXT_APP_PRIVATE_KEY }}
        permission-contents: write
    - uses: actions/checkout@v6
      with:
        fetch-depth: 2
        clean: false
        token: ${{ github.ref == 'refs/heads/master' && steps.app-token.outputs.token || github.token }}
    - name: Skip Automated Push Commits
      id: check_commit
      run: |
        if [[ "$HEAD_COMMIT_MESSAGE" == *"[Automated changes]"* ]]; then
          echo "This commit was made by the action. Skipping."
          exit 0
        fi
    - uses: actions/setup-node@v5
      with:
        node-version: '22'
    - name: Set up JDK
      uses: actions/setup-java@v5
      with:
        distribution: temurin
        java-version: '21'   # or '20' – but match what :lib is targeting
    - name: Install npm dependencies
      run: npm ci --include=dev
    - name: Determine modified files
      run: ./build/utils/init_actions.sh
    - name: Pre-transpile (export exchanges and emit API)
      run: npm run pre-transpile-java
    - name: Transpile to Java
      if: env.important_modified == 'true'
      run: npm run force-transpileJava
    - name: Transpile to Java (specific)
      if: env.important_modified == 'false'
      run: |
        cleaned_rest_files=$(echo ${{ env.rest_files }} | tr -s ' ')
        for exchange in $cleaned_rest_files; do
          npm run transpileJavaSingle -- $exchange
        done
        cleaned_ws_files=$(echo ${{ env.ws_files }} | tr -s ' ')
        for exchange in $cleaned_ws_files; do
          npm run transpileJavaSingle -- --ws $exchange
        done
    - name: Transpile prediction to Java
      if: env.prediction_modified == 'true'
      run: npm run transpile-prediction-java
    - name: Build Project
      run: npm run buildJava
    - name: Run Base Tests
      if: env.important_modified == 'true'
      run: npm run test-base-rest-java
    - name: Run Id Tests
      if: env.important_modified == 'true'
      run: npm run id-tests-java
    - name: Request tests
      if: env.important_modified == 'true'
      run: npm run request-java
    - name: Request tests (specific)
      if: env.important_modified == 'false'
      run: |
        cleaned_rest_files=$(echo ${{ env.rest_files }} | tr -s ' ')
        for exchange in $cleaned_rest_files; do
          ./java/gradlew -p java :tests:run --args="--requestTests $exchange"
        done
    - name: Response tests
      if: env.important_modified == 'true'
      run: npm run response-java
    - name: Response tests (specific)
      if: env.important_modified == 'false'
      run: |
        cleaned_rest_files=$(echo ${{ env.rest_files }} | tr -s ' ')
        for exchange in $cleaned_rest_files; do
          ./java/gradlew -p java :tests:run --args="--responseTests $exchange"
        done
    - name: Prediction request tests
      if: env.prediction_modified == 'true'
      run: npm run request-java-prediction
    - name: Prediction response tests
      if: env.prediction_modified == 'true'
      run: npm run response-java-prediction
    - name: Upload shared_env.txt
      uses: actions/upload-artifact@v4
      with:
          name: shared_env
          path: shared_env.txt
    - name: Upload Java Files
      uses: actions/upload-artifact@v4
      with:
        name: java-files
        path: | 
          java/
          !java/**/build/**
          !java/.gradle/**
        retention-days: 1

    - name: Get App bot user ID
      if: github.ref == 'refs/heads/master'
      id: app-user
      env:
        GH_TOKEN: ${{ steps.app-token.outputs.token }}
      run: |
        id=$(curl -fsSL -H "Authorization: Bearer ${GH_TOKEN}" \
          "https://api.github.com/users/${{ steps.app-token.outputs.app-slug }}%5Bbot%5D" \
          | node -p "JSON.parse(require('fs').readFileSync(0, 'utf8')).id")
        echo "id=${id}" >> "$GITHUB_OUTPUT"

    - name: Push Java changes to master
      if: github.ref == 'refs/heads/master' && github.actor != 'ccxt-release[bot]'
      env:
        APP_TOKEN: ${{ steps.app-token.outputs.token }}
      run: |
        git config user.name "${{ steps.app-token.outputs.app-slug }}[bot]"
        git config user.email "${{ steps.app-user.outputs.id }}+${{ steps.app-token.outputs.app-slug }}[bot]@users.noreply.github.com"

        git remote set-url origin \
          "https://x-access-token:${APP_TOKEN}@github.com/${GITHUB_REPOSITORY}.git"

        git checkout HEAD README.md wiki  # only JS does wiki pushback

        git add java/

        if git diff --cached --quiet; then
          echo "No changes to commit."
          exit 0
        fi

        git commit -m "[Automated changes] Java files"

        for attempt in 1 2 3 4 5; do
          git fetch origin master
          git rebase --autostash origin/master
          if git push origin HEAD:master; then
            echo "pushed on attempt ${attempt}"
            exit 0
          fi
          echo "master moved, retrying (${attempt})..."
          sleep $(( (RANDOM % 5) + 2 ))
        done
        echo "push failed after 5 attempts"
        exit 1

  live-tests:
    needs: build
    runs-on: ubuntu-latest
    # Local sweep on 48 GB / many cores finishes REST + WS in parallel in ~26 min.
    # CI's 7 GB / 4-core runner is slower per JVM and contention from 10
    # concurrent gradle JVMs (5 REST + 5 WS) extends wall-clock — 30 min wasn't
    # enough. 60 min gives margin without burning runner time on a runaway hang.
    timeout-minutes: 60
    steps:
      - uses: actions/checkout@v5
        with:
          clean: false
      - name: Download shared_env
        uses: actions/download-artifact@v4
        with:
          name: shared_env
      - name: Set up JDK
        uses: actions/setup-java@v5
        with:
          distribution: temurin
          java-version: '21'   # or '20' – but match what :lib is targeting
      - name: Download Java Files
        uses: actions/download-artifact@v4
        with:
          name: java-files
          path: java/
      - name: Restore shared_env
        run: ./build/utils/restore_shared_env.sh
      - uses: actions/setup-node@v5
        with:
          node-version: '22'
          cache: 'npm'
      - name: Install npm dependencies
        run: npm ci --include=dev
      - name: Export exchanges
        run: npm run export-exchanges
      - name: List Java/ contents
        run: ls java/
      - name: Build project again (rm later)
        run: npm run buildJava
      - name: Live tests
        if: env.important_modified == 'true'
        run: ./run-tests-simul.sh --java
      - name: Live tests (specific)
        if: env.important_modified == 'false'
        run: ./run-tests-simul.sh --java "${{ env.rest_files }}" "${{ env.ws_files }}"