docs.yml

# This workflow builds the torchrl docs and deploys them to gh-pages.
name: Generate documentation
on:
  push:
    branches:
      - nightly
      - main
      - release/*
    tags:
      - v[0-9]+.[0-9]+.[0-9]
      - v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+
  pull_request:
  workflow_dispatch:

concurrency:
  # Documentation suggests ${{ github.head_ref }}, but that's only available on pull_request/pull_request_target triggers, so using ${{ github.ref }}.
  # On master, we want all builds to complete even if merging happens faster to make it easier to discover at which point something broke.
  group: ${{ github.workflow }}-${{ github.ref == 'refs/heads/main' && format('ci-master-{0}', github.sha) || format('ci-{0}', github.ref) }}
  cancel-in-progress: true

jobs:
  build-docs:
    strategy:
      matrix:
        python_version: ["3.10"]
        cuda_arch_version: ["12.1"]
    uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
    with:
      repository: pytorch/rl
      upload-artifact: docs
      runner: "linux.g5.4xlarge.nvidia.gpu"
      docker-image: "nvidia/cudagl:11.4.0-base"
      timeout: 120
      script: |
        set -e
        set -v
        apt-get update && apt-get install -y -f git wget gcc g++ dialog apt-utils
        root_dir="$(pwd)"
        conda_dir="${root_dir}/conda"
        env_dir="${root_dir}/env"
        os=Linux
        
        # 1. Install conda at ./conda
        printf "* Installing conda\n"
        wget -O miniconda.sh "http://repo.continuum.io/miniconda/Miniconda3-latest-${os}-x86_64.sh"
        bash ./miniconda.sh -b -f -p "${conda_dir}"
        eval "$(${conda_dir}/bin/conda shell.bash hook)"
        printf "* Creating a test environment\n"
        conda create --prefix "${env_dir}" -y python=3.10
        printf "* Activating\n"
        conda activate "${env_dir}"

        # 2. upgrade pip, ninja and packaging
        apt-get install python3-pip unzip -y -f
        python3 -m pip install --upgrade pip
        python3 -m pip install setuptools ninja packaging cmake -U
        
        # 3. check python version
        python3 --version
        
        # 4. Check git version
        git version
        
        # 5. Install PyTorch
        python3 -m pip install --pre torch torchvision --index-url https://download.pytorch.org/whl/nightly/cpu -U --quiet --root-user-action=ignore
        
        # 6. Install tensordict
        python3 -m pip install git+https://github.com/pytorch/tensordict.git --quiet --root-user-action=ignore
        
        # 7. Install TorchRL
        python3 setup.py develop
        
        # 8. Install requirements
        python3 -m pip install -r docs/requirements.txt --quiet --root-user-action=ignore

        # 9. Set sanitize version
        if [[ ${{ github.event_name }} == push && (${{ github.ref_type }} == tag || (${{ github.ref_type }} == branch && ${{ github.ref_name }} == release/*)) ]]; then
          echo '::group::Enable version string sanitization'
          # This environment variable just has to exist and must not be empty. The actual value is arbitrary.
          # See docs/source/conf.py for details
          export RL_SANITIZE_VERSION_STR_IN_DOCS=1
          echo '::endgroup::'
        fi

        # 10. Test torchrl installation
        mkdir _tmp
        cd _tmp
        PYOPENGL_PLATFORM=egl MUJOCO_GL=egl python3 -c """from torchrl.envs.libs.dm_control import DMControlEnv
        print(DMControlEnv('cheetah', 'run', from_pixels=True).reset())"""
        cd ..
        
        # 11. Build doc
        cd ./docs
        # timeout 7m bash -ic "MUJOCO_GL=egl sphinx-build ./source _local_build" || code=$?; if [[ $code -ne 124 && $code -ne 0 ]]; then exit $code; fi
        # bash -ic "PYOPENGL_PLATFORM=egl MUJOCO_GL=egl sphinx-build ./source _local_build" || code=$?; if [[ $code -ne 124 && $code -ne 0 ]]; then exit $code; fi
        PYOPENGL_PLATFORM=egl MUJOCO_GL=egl sphinx-build ./source _local_build
        cd ..

        cp -r docs/_local_build/* "${RUNNER_ARTIFACT_DIR}"
        echo $(ls "${RUNNER_ARTIFACT_DIR}")
        if [[ ${{ github.event_name == 'pull_request' }} ]]; then
          cp -r docs/_local_build/* "${RUNNER_DOCS_DIR}"
        fi

  upload:
    needs: build-docs
    if: github.repository == 'pytorch/rl' && github.event_name == 'push' && 
        ((github.ref_type == 'branch' && github.ref_name == 'main') || github.ref_type == 'tag')
    permissions:
      contents: write
    uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
    with:
      repository: pytorch/rl
      download-artifact: docs
      ref: gh-pages
      test-infra-ref: main
      script: |
        set -euo pipefail

        REF_TYPE=${{ github.ref_type }}
        REF_NAME=${{ github.ref_name }}

        if [[ "${REF_TYPE}" == branch ]]; then
          if [[ "${REF_NAME}" == main ]]; then
            TARGET_FOLDER="${REF_NAME}"
          # Bebug:
          # else
          #   TARGET_FOLDER="release-doc"
          fi
        elif [[ "${REF_TYPE}" == tag ]]; then
          case "${REF_NAME}" in
            *-rc*)
              echo "Aborting upload since this is an RC tag: ${REF_NAME}"
              exit 0
              ;;
            *)
              # Strip the leading "v" as well as the trailing patch version. For example:
              # 'v0.15.2' -> '0.15'
              TARGET_FOLDER=$(echo "${REF_NAME}" | sed 's/v\([0-9]\+\)\.\([0-9]\+\)\.[0-9]\+/\1.\2/')
              ;;
          esac
        fi

        echo "Target Folder: ${TARGET_FOLDER}"

        mkdir -p "${TARGET_FOLDER}"
        rm -rf "${TARGET_FOLDER}"/*

        echo $(ls "${RUNNER_ARTIFACT_DIR}")
        rsync -a "${RUNNER_ARTIFACT_DIR}"/ "${TARGET_FOLDER}"
        git add "${TARGET_FOLDER}" || true

        # Debug
        # if [[ "${TARGET_FOLDER}" == "main" ]] || [[ "${TARGET_FOLDER}" == "release-doc" ]]; then
        if [[ "${TARGET_FOLDER}" == "main" ]] ; then
          mkdir -p _static
          rm -rf _static/*
          cp -r "${TARGET_FOLDER}"/_static/* _static
          git add _static || true
        fi

        git config user.name 'pytorchbot'
        git config user.email 'soumith+bot@pytorch.org'
        git config http.postBuffer 524288000
        git commit -m "auto-generating sphinx docs" || true
        git push