ci_linux.yml

name: CI on Linux

on:
  # Trigger builds on pull requests
  pull_request:
    paths-ignore:
      - "**.md"

  # Trigger builds AND tests on push to main
  push:
    branches:
      - main
    paths-ignore:
      - "**.md"

  # Add manual trigger via Actions UI for running BOTH build and test
  workflow_dispatch:

env:
  RUST_LOG: info
  RUST_BACKTRACE: 1

jobs:
  build:
    name: ${{ matrix.variance.name }}
    runs-on: ubuntu-latest
    container:
      image: ${{ matrix.variance.image }}
    strategy:
      fail-fast: false
      matrix:
        variance:
          # - name: Ubuntu-22.04/CUDA-11.8.0
          #   image: "ghcr.io/rust-gpu/rust-cuda-ubuntu22-cuda11:latest"
          - name: Ubuntu-22.04/CUDA-12.8.1
            image: "ghcr.io/rust-gpu/rust-cuda-ubuntu22-cuda12:latest"
          - name: Ubuntu-24.04/CUDA-12.8.1
            image: "ghcr.io/rust-gpu/rust-cuda-ubuntu24-cuda12:latest"
          - name: RockyLinux-9/CUDA-12.8.1
            image: "ghcr.io/rust-gpu/rust-cuda-rockylinux9-cuda12:latest"

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Verify CUDA, Rust installation
        run: |
          nvcc --version
          rustup show
      - name: Load Rust cache
        uses: Swatinem/rust-cache@v2
        with:
          # Use the specific commit SHA for the most accurate build cache key
          key: ${{ matrix.variance.name }}-${{ github.sha }}

      - name: Rustfmt
        run: cargo fmt --all -- --check

      - name: Clippy
        env:
          RUSTFLAGS: -Dwarnings
        run: cargo clippy --workspace --exclude "optix*" --exclude "path_tracer" --exclude "denoiser" --exclude "ex*" --exclude "cudnn*"

      - name: Build all bindings
        run: cargo build --all-features -p cust_raw

      - name: Build workspace
        run: cargo build --workspace --exclude "optix*" --exclude "path_tracer" --exclude "denoiser" --exclude "ex*" --exclude "cudnn*"

      - name: Check documentation
        env:
          RUSTDOCFLAGS: -Dwarnings
        run: cargo doc --workspace --all-features --document-private-items --no-deps --exclude "optix*" --exclude "path_tracer" --exclude "denoiser" --exclude "ex*" --exclude "cudnn*" --exclude "cust_raw"

      - name: Set artifact name
        id: artifact_name
        run: |
          ARTIFACT_NAME="target_debug-$(echo '${{ matrix.variance.name }}' | sed 's/\//-/g')-${{ github.run_id }}"
          echo "artifact_name=${ARTIFACT_NAME}" >> $GITHUB_OUTPUT

      - name: Upload build artifacts
        uses: actions/upload-artifact@v4
        with:
          name: ${{ steps.artifact_name.outputs.artifact_name }}
          path: target/debug
          retention-days: 1

      - name: Debug Info
        if: github.event_name == 'pull_request'
        run: |
            echo "Event Name: ${{ github.event_name }}"
            echo "Author Association: ${{ github.event.pull_request.author_association }}"
            echo "Is Owner/Member?: ${{ contains(fromJson('[\"OWNER\", \"MEMBER\"]'), github.event.pull_request.author_association) }}"

  test:
    name: ${{ matrix.variance.name }}
    # This job depends on the build job completing successfully for the same matrix entry
    needs: build
    # Run this job ONLY IF:
    # - The build job succeeded
    # - AND EITHER:
    #   - The event was a push to the 'main' branch
    #   - OR The event was a manual trigger
    #   - OR The event was a pull_request AND the author is an OWNER or MEMBER of the repo
    if: >
      needs.build.result == 'success' &&
      (
        (github.event_name == 'push' && github.ref == 'refs/heads/main') ||
        github.event_name == 'workflow_dispatch' ||
        (
          github.event_name == 'pull_request' &&
          contains(fromJson('["OWNER","MEMBER"]'), github.event.pull_request.author_association)
        )
      )
    runs-on: ubuntu-latest
    # Use the exact same container image as the build job
    container:
      image: ${{ matrix.variance.image }}
    strategy:
      # Save some credits
      fail-fast: true
      matrix:
        variance:
          # Must match the build job's matrix definition
          # - name: Ubuntu-22.04/CUDA-11.8.0
          #   image: "ghcr.io/rust-gpu/rust-cuda-ubuntu22-cuda11:latest"
          - name: Ubuntu-22.04/CUDA-12.8.1
            image: "ghcr.io/rust-gpu/rust-cuda-ubuntu22-cuda12:latest"
          - name: Ubuntu-24.04/CUDA-12.8.1
            image: "ghcr.io/rust-gpu/rust-cuda-ubuntu24-cuda12:latest"
          - name: RockyLinux-9/CUDA-12.8.1
            image: "ghcr.io/rust-gpu/rust-cuda-rockylinux9-cuda12:latest"
    steps:
      - name: Set artifact name
        id: artifact_name
        run: |
          ARTIFACT_NAME="target_debug-$(echo '${{ matrix.variance.name }}' | sed 's/\//-/g')-${{ github.run_id }}"
          echo "artifact_name=${ARTIFACT_NAME}" >> $GITHUB_OUTPUT

      - name: Download build artifacts
        uses: actions/download-artifact@v4
        with:
          name: ${{ steps.artifact_name.outputs.artifact_name }}
          path: target/debug

      - name: List downloaded files
        run: ls -lR target/debug

      - name: Run remote tests
        env:
          # Inject the id and secret ONLY in this job, which is conditionally run
          MODAL_TOKEN_ID: ${{ secrets.MODAL_TOKEN_ID }}
          MODAL_TOKEN_SECRET: ${{ secrets.MODAL_TOKEN_SECRET }}
          # Add any other env vars needed for testing
        run: |
          echo "Stubbed out"