name: R

on:
  push:
    branches:
      - master
      - branch-[0-9]+.[0-9]+
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
    paths-ignore:
      - "docs/**"
      - "**.md"
      - "dev/clint/**"
      - ".github/workflows/docs.yml"
      - ".github/workflows/preview-docs.yml"
      - "mlflow/server/js/**"
      - ".github/workflows/js.yml"
      - ".claude/**"
  schedule:
    # Run this workflow daily at 13:00 UTC
    - cron: "0 13 * * *"

concurrency:
  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.ref }}
  cancel-in-progress: true

defaults:
  run:
    shell: bash

env:
  MLFLOW_HOME: ${{ github.workspace }}
  PIP_CONSTRAINT: ${{ github.workspace }}/requirements/constraints.txt

permissions: {}

jobs:
  r:
    runs-on: ubuntu-latest
    timeout-minutes: 120
    permissions:
      contents: read
    if: (github.event_name == 'push' || (github.event_name == 'schedule' && github.repository == 'mlflow/dev') || (github.event_name == 'pull_request' && (github.event.pull_request.draft == false || github.event.pull_request.user.login == 'Copilot' && github.event.pull_request.user.type == 'Bot')))
    defaults:
      run:
        working-directory: mlflow/R/mlflow
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
          repository: ${{ github.event_name == 'schedule' && 'mlflow/mlflow' || null }}
      - uses: ./.github/actions/setup-python
      - uses: ./.github/actions/setup-pyenv
      - uses: ./.github/actions/setup-java
      - uses: r-lib/actions/setup-r@a51a8012b0aab7c32ef9d19bf54da93f3254335e # v2.12.0
      # This step dumps the current set of R dependencies and R version into files to be used
      # as a cache key when caching/restoring R dependencies.
      - name: Dump dependencies
        run: |
          Rscript -e 'source(".dump-r-dependencies.R", echo = TRUE)'
      - name: Get OS name
        id: os-name
        run: |
          # `os_name` will be like "Ubuntu-20.04.1-LTS"
          os_name=$(lsb_release -ds | sed 's/\s/-/g')
          echo "os-name=$os_name" >> $GITHUB_OUTPUT
      - name: Cache R packages
        uses: actions/cache@cdf6c1fa76f9f475f3d7449005a359c84ca0f306 # v5.0.3
        continue-on-error: true
        # https://github.com/actions/cache/issues/810
        env:
          SEGMENT_DOWNLOAD_TIMEOUT_MINS: 5
        with:
          path: ${{ env.R_LIBS_USER }}
          # We cache R dependencies based on a tuple of the current OS, the R version, and the list of
          # R dependencies
          key: ${{ steps.os-name.outputs.os-name }}-${{ hashFiles('mlflow/R/mlflow/R-version') }}-0-${{ hashFiles('mlflow/R/mlflow/depends.Rds') }}
      - name: Install dependencies
        run: |
          Rscript -e 'source(".install-deps.R", echo=TRUE)'
      - name: Set USE_R_DEVEL
        env:
          HAS_R_DEVEL_LABEL: ${{ contains(github.event.pull_request.labels.*.name, 'r-devel') }}
        run: |
          if [ "$GITHUB_EVENT_NAME" = "schedule" ]; then
            USE_R_DEVEL=true
          elif [ "$GITHUB_EVENT_NAME" = "pull_request" ]; then
            # Use r-devel on a pull request targeted to a release branch or with the "r-devel" label
            if [[ $GITHUB_BASE_REF =~ branch-[0-9]+\.[0-9]+$ ]] || [ "$HAS_R_DEVEL_LABEL" = "true" ]; then
              USE_R_DEVEL=true
            else
              USE_R_DEVEL=false
            fi
          else
            # Use r-devel on a push to a release branch
            USE_R_DEVEL=$([[ $GITHUB_REF_NAME =~ branch-[0-9]+\.[0-9]+$ ]] && echo true || echo false)
          fi
          echo "USE_R_DEVEL=$USE_R_DEVEL" >> $GITHUB_ENV
      - name: Build package
        run: |
          ./build-package.sh
      - name: Create test environment
        run: |
          uv pip install --system $(git rev-parse --show-toplevel)
          H2O_VERSION=$(Rscript -e "print(packageVersion('h2o'))" | grep -Eo '[0-9][0-9.]+')
          # test-keras-model.R fails with tensorflow>=2.13.0
          uv pip install --system xgboost 'tensorflow<2.13.0' "h2o==$H2O_VERSION" "pydantic<3,>=1.0" "typing_extensions>=4.6.0"
          Rscript -e 'source(".install-mlflow-r.R", echo=TRUE)'
      - name: Run tests
        env:
          LINTR_COMMENT_BOT: false
          # TODO: Migrate R tests to use a SQLite backend instead of FileStore
          MLFLOW_ALLOW_FILE_STORE: true
        run: |
          cd tests
          export RETICULATE_PYTHON_BIN=$(which python)
          export MLFLOW_SERVER_ENABLE_JOB_EXECUTION=false
          Rscript -e 'source("../.run-tests.R", echo=TRUE)'