full-ci.yml

# Complete CI workflow
# Run by bors, and enforced before any PR is merged
# Includes unit and integration tests for all platforms, as well as optional nightly jobs

# See also: https://matklad.github.io/2021/09/04/fast-rust-builds.html

# Note: if workflow-wide fail-fast is needed, this step can be added at the end of *each* job.
# It will immediately cancel all outstanding jobs. This can be useful to free them up for other runs.
# - name: If job failed, cancel workflow...
#   if: failure()
#   uses: andymckay/cancel-action@0.2

# Note: important points about Rust caching (Swatinem/rust-cache action), which contributes majorly to speedup:
# 1. It caches only dependencies. The own crates are always fully recompiled, and incremental compilation is disabled.
# 2. It takes the current job ID as a key, which means it CANNOT cache between jobs.
#    Running a prior job to reuse build artifacts is thus pointless with this action.
# 3. The dependencies in Cargo.toml are hashed into the key, thus it cannot happen that removing a dependency will still work
#    due to the dependency being cached. On the other hand, it means dependency changes come with full recompile.
# 4. As the effectivity of the cache depends on previous runs and available runners, workflow execution times
#    can easily vary by 30%.

# Note: if CI becomes more complex, we might look into code-generation of the action and workflow files at some point.
# 300+ LOC for a few platform tests is still OK, but there's a lot of repetition, and quite some limitations that could be addressed.

name: Full CI

env:
  # Environment variables used by toolchain
  CARGO_TERM_COLOR: always
  CARGO_INCREMENTAL: 0
  RUST_BACKTRACE: 1

  # Local variables
  # Note: using variables is limited at the moment, see https://github.com/actions/runner/issues/480
  GDRUST_FEATURES: "gdnative/async,gdnative/serde,gdnative_bindings_generator/debug"
  CARGO_DENY_VERSION: "0.11.4"
  CARGO_DINGHY_VERSION: "0.4.71"
  CARGO_MACHETE_VERSION: "0.3"

on:
  push:
    branches:
      - staging
      - trying

defaults:
  run:
    shell: bash

jobs:
  rustfmt:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: "Install Rust"
        uses: ./.github/composite/rust
        with:
          components: rustfmt
      - name: "Check rustfmt"
        run: cargo fmt --all -- --check

  clippy:
    name: clippy${{ matrix.rust.postfix }}
    runs-on: ubuntu-latest
    continue-on-error: ${{ matrix.rust.toolchain == 'nightly' }}
    needs: rustfmt
    strategy:
      matrix:
        rust:
          - toolchain: stable
            postfix: ''
          - toolchain: nightly
            postfix: ' (nightly)'
    steps:
      - uses: actions/checkout@v3
      - name: "Install Rust"
        uses: ./.github/composite/rust
        with:
          rust: ${{ matrix.rust.toolchain }}
          components: clippy
      - name: "Check clippy"
        run: cargo clippy --workspace --features ${GDRUST_FEATURES} -- -D clippy::style -D clippy::complexity -D clippy::perf -D clippy::dbg_macro -D clippy::todo -D clippy::unimplemented

  cargo-deny-machete:
    runs-on: ubuntu-latest
    needs: rustfmt
    steps:
      - uses: actions/checkout@v3

      # Deny
      # Note: manually downloading is ~30s faster than https://github.com/EmbarkStudios/cargo-deny-action
      - name: "Install cargo-deny"
        run: |
          wget --no-verbose https://github.com/EmbarkStudios/cargo-deny/releases/download/$CARGO_DENY_VERSION/cargo-deny-$CARGO_DENY_VERSION-x86_64-unknown-linux-musl.tar.gz -O cargo-deny.tar.gz
          tar -zxvf cargo-deny.tar.gz
          mkdir -p $HOME/.cargo/bin
          mv cargo-deny-$CARGO_DENY_VERSION-x86_64-unknown-linux-musl/cargo-deny $HOME/.cargo/bin
      - name: "Deny non-conforming dependencies"
        run: cargo deny check --config tools/deny.toml

      # Machete
      - name: "Install cargo-machete"
        uses: baptiste0928/cargo-install@v1
        with:
          crate: cargo-machete
          version: ${{ env.CARGO_MACHETE_VERSION }}
      - name: "Use machete to cut down dependencies"
        run: cargo machete


  test:
    name: test-${{ matrix.os.name }}${{ matrix.rust.postfix }}
    needs: rustfmt
    continue-on-error: ${{ matrix.rust.toolchain == 'nightly' }}
    strategy:
      fail-fast: true # cancel all jobs as soon as one fails?
      matrix:
        # Order this way because MacOS typically has longest duration, followed by Windows, so it benefits total workflow execution time.
        # Additionally, the 'linux (msrv *)' special case will then be listed next to the other 'linux' jobs.
        # Note: Windows uses '--target x86_64-pc-windows-msvc' by default as Cargo argument.
        os:
          - id: macos-latest
            name: macos
          - id: windows-latest
            name: windows
          - id: ubuntu-latest
            name: linux
        rust:
          - toolchain: stable
            postfix: ''
          - toolchain: nightly
            postfix: ' (nightly)'
        # All non-stable versions skip UI tests, as it's usually impossible to have them satisfy all possible compiler versions simultaneously
        include:
          - rust: { toolchain: 'nightly' }
            testflags: '-- --skip ui_tests'
          - os: { id: ubuntu-latest, name: linux }
            rust: { toolchain: '1.63', postfix: ' (msrv 1.63)' }
            testflags: '-- --skip ui_tests'
          - os: { id: ubuntu-latest, name: linux }
            rust: { toolchain: 'stable', postfix: ' (minimal-deps)', special: 'minimal-deps' }
            testflags: '-- --skip ui_tests'
    runs-on: ${{ matrix.os.id }}
    steps:
      - uses: actions/checkout@v3
      - name: "Install nightly Rust (minimal-deps only)"
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly
          override: false # use selected toolchain for remainder of this step
          components: cargo
        if: ${{ matrix.rust.special == 'minimal-deps' }}
      - name: "Install minimal dependency versions from Cargo"
        run: cargo +nightly update -Z minimal-versions
        if: ${{ matrix.rust.special == 'minimal-deps' }}
      - name: "Install Rust"
        uses: ./.github/composite/rust
        with:
          rust: ${{ matrix.rust.toolchain }}
          cache-key: ${{ matrix.rust.special }} # 'minimal-deps' or empty/not defined
      - name: "Install LLVM"
        uses: ./.github/composite/llvm
        if: ${{ matrix.os.id == 'windows-latest' }}
      - name: "Compile tests"
        run: cargo test --workspace --features ${GDRUST_FEATURES} --no-run
      - name: "Test"
        run: cargo test --workspace --features ${GDRUST_FEATURES} ${{ matrix.testflags }}

  build-release:
    name: build-release-${{ matrix.os.name }}
    needs: rustfmt
    strategy:
      fail-fast: true # cancel all jobs as soon as one fails?
      matrix:
        os:
          - id: macos-latest
            name: macos
          - id: windows-latest
            name: windows
          - id: ubuntu-latest
            name: linux
    runs-on: ${{ matrix.os.id }}
    steps:
      - uses: actions/checkout@v3
      - name: "Install Rust"
        uses: ./.github/composite/rust
        with:
          rust: stable
      - name: "Install LLVM"
        uses: ./.github/composite/llvm
        if: ${{ matrix.os.id == 'windows-latest' }}
      - name: "Release build (check only)"
        run: cargo check --release

  build-ios:
    needs: rustfmt
    #continue-on-error: ${{ matrix.rust == 'nightly' }}
    #strategy:
    #  matrix:
    #    rust: [stable]
    runs-on: macos-latest
    steps:
      - uses: actions/checkout@v3
      - name: "Install Rust"
        uses: ./.github/composite/rust
        #with:
        #  rust: ${{ matrix.rust.toolchain }}
      - name: "Install cargo-dinghy"
        run: |
          rustup target add x86_64-apple-ios
          curl -L https://github.com/sonos/dinghy/releases/download/$CARGO_DINGHY_VERSION/cargo-dinghy-macos-$CARGO_DINGHY_VERSION.tgz -o cargo-dinghy-macos.tar.gz
          tar -zxvf cargo-dinghy-macos.tar.gz
          mkdir -p $HOME/.cargo/bin
          cp cargo-dinghy-$CARGO_DINGHY_VERSION/cargo-dinghy $HOME/.cargo/bin
      - name: "Cross-compile to iOS"
        run: |
          RUNTIME_ID=$(xcrun simctl list runtimes | grep iOS | cut -d ' ' -f 7 | tail -1)
          export SIM_ID=$(xcrun simctl create My-iphone11 com.apple.CoreSimulator.SimDeviceType.iPhone-11 $RUNTIME_ID)
          xcrun simctl boot $SIM_ID
          cd gdnative-core
          cargo dinghy --platform auto-ios-x86_64 test
          cd ..
          cd gdnative-sys
          cargo dinghy --platform auto-ios-x86_64 test

  build-android:
    # Note: even though Android builds for another architecture than Linux, it can reuse downloaded crates (source code, maybe 'cargo check').
    needs: rustfmt
    #continue-on-error: ${{ matrix.rust == 'nightly' }}
    #strategy:
    #  matrix:
    #    rust: [stable]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: "Install Rust"
        uses: ./.github/composite/rust
        #with:
        #  rust: ${{ matrix.rust.toolchain }}
      - name: "Install Java + NDK"
        run: |
          # aarch64 and armv7 cover most Android phones & tablets.
          rustup target add aarch64-linux-android armv7-linux-androideabi
          sudo apt-get update
          sudo apt-get install llvm-dev libclang-dev clang g++-multilib gcc-multilib libc6-dev libc6-dev-arm64-cross

      # Relies on ls listing alphabetically, NDK versions having fixed
      # digits, and the folder not containing any other files
      - name: "Find highest Android NDK version"
        run: |
          highestNdk=$(ls $ANDROID_SDK_ROOT/ndk | tail -n1)
          echo "Highest Android NDK: $highestNdk"
          echo "ANDROID_NDK_VERSION=$highestNdk" >> $GITHUB_ENV

      # See https://github.com/godot-rust/godot-rust/pull/920
      - name: "Found version ${{ env.ANDROID_NDK_VERSION }}. Workaround Rust bug..."
        run: >
          find -L $ANDROID_SDK_ROOT/ndk/$ANDROID_NDK_VERSION -name libunwind.a
          -execdir sh -c 'echo "INPUT(-lunwind)" > libgcc.a' \;

      - name: "Build Rust for targets: aarch64-linux-android, armv7-linux-androideabi"
        run: |
          export CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER=$ANDROID_SDK_ROOT/ndk/$ANDROID_NDK_VERSION/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android21-clang++
          export CARGO_TARGET_ARMV7_LINUX_ANDROIDEABI_LINKER=$ANDROID_SDK_ROOT/ndk/$ANDROID_NDK_VERSION/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi21-clang++
          cargo build --target aarch64-linux-android --release
          cargo build --target armv7-linux-androideabi --release

  integration-test-godot:
    name: itest-godot-${{ matrix.godot }}${{ matrix.postfix }}
    needs: rustfmt
    continue-on-error: ${{ matrix.rust.toolchain == 'nightly' }}
    strategy:
      fail-fast: false # cancel all jobs as soon as one fails?
      matrix:
        include:
          # Latest Godot with different Rust versions
          - rust: stable
            godot: "3.5.1"
            postfix: ''
          - rust: nightly
            godot: "3.5.1"
            postfix: ' (nightly)'
          - rust: '1.63'
            godot: "3.5.1"
            postfix: ' (msrv 1.63)'

          # Test with oldest supported engine version
          - rust: stable
            godot: "3.2-stable"
            postfix: ''
            build_args: '--features custom-godot'

    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: "Run Godot integration test"
        uses: ./.github/composite/godot
        with:
          rust_toolchain: ${{ matrix.rust }}
          rust_extra_args: ${{ matrix.build_args }}
          godot_ver: ${{ matrix.godot }}


  # This job doesn't actually test anything, but is used to tell bors that the build completed,
  # as there is no practical way to detect when a workflow is successful, listening to webhooks only.
  # The ID (not name) of this job is the one referenced in bors.toml.
  #
  # ALL THE PREVIOUS JOBS NEED TO BE ADDED TO THE `needs` SECTION OF THIS JOB!
  full-ci:
    if: github.event_name == 'push' && success()
    needs:
      #- rustfmt
      - clippy
      - cargo-deny-machete
      - test
      - integration-test-godot
      - build-release
      - build-ios
      - build-android
    runs-on: ubuntu-latest
    steps:
      - name: "Mark the job as a success"
        run: exit 0