build-and-test.yml

# Taken from https://github.com/prefix-dev/pixi/blob/c32351a/.github/workflows/rust.yml
name: Build and Test Static Binary

on:
  push:
    tags:
      - "v*"
    branches:
      - main
  workflow_dispatch:
  pull_request:

permissions:
  contents: write

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

env:
  RUST_LOG: info
  RUST_BACKTRACE: 1
  RUSTFLAGS: "-D warnings"
  CARGO_TERM_COLOR: always
  CICD_INTERMEDIATES_DIR: "_cicd-intermediates"
  TEST_FEATURES: "slow_integration_tests"
  XDG_CACHE_HOME: ${{ github.workspace }}/.cache

jobs:
  crate_metadata:
    name: Extract crate metadata
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Extract crate information
        id: crate_metadata
        run: |
          cargo metadata --manifest-path yen-rs/Cargo.toml --no-deps --format-version 1 | jq -r '"name=" + .packages[0].name' | tee -a $GITHUB_OUTPUT
          cargo metadata --manifest-path yen-rs/Cargo.toml --no-deps --format-version 1 | jq -r '"version=" + .packages[0].version' | tee -a $GITHUB_OUTPUT
          cargo metadata --manifest-path yen-rs/Cargo.toml --no-deps --format-version 1 | jq -r '"maintainer=" + .packages[0].authors[0]' | tee -a $GITHUB_OUTPUT
          cargo metadata --manifest-path yen-rs/Cargo.toml --no-deps --format-version 1 | jq -r '"homepage=" + .packages[0].homepage' | tee -a $GITHUB_OUTPUT
    outputs:
      name: ${{ steps.crate_metadata.outputs.name }}
      version: ${{ steps.crate_metadata.outputs.version }}
      maintainer: ${{ steps.crate_metadata.outputs.maintainer }}
      homepage: ${{ steps.crate_metadata.outputs.homepage }}

  build:
    name: ${{ matrix.name }}
    runs-on: ${{ matrix.os }}
    needs: [crate_metadata]
    strategy:
      fail-fast: false
      matrix:
        include:
          - {
              name: "Linux-x86_64",
              target: x86_64-unknown-linux-musl,
              os: ubuntu-20.04,
            }
          - {
              name: "Linux-aarch64",
              target: aarch64-unknown-linux-musl,
              os: ubuntu-latest,
            }
          - {
              name: "macOS-x86_64",
              target: x86_64-apple-darwin,
              os: macOS-latest,
            }
          - {
              name: "macOS-aarch64",
              target: aarch64-apple-darwin,
              os: macOS-latest,
            }
          - {
              name: "windows-x86_64",
              target: x86_64-pc-windows-msvc,
              os: windows-latest,
            }
    env:
      #
      # These are some environment variables that configure the build so that the binary size is reduced.
      # Inspiration was taken from this blog: https://arusahni.net/blog/2020/03/optimizing-rust-binary-size.html
      #

      # Enable Link Time Optimization (LTO) for our release builds. This increases link time but drastically reduces
      # binary size.
      CARGO_PROFILE_RELEASE_LTO: true

      # Use a single code gen unit, this effectively disables parallel linking but ensures that everything is linked
      # together in a single unit which reduces the file-size at the cost of link time.
      CARGO_PROFILE_RELEASE_CODEGEN_UNITS: 1

      # Optimize the binary for size. This reduces the filesize at the cost of a slower binary.
      CARGO_PROFILE_OPT_LEVEL: s
    steps:
      - name: Checkout source code
        uses: actions/checkout@v3

      - uses: actions/setup-python@v5
        with:
          python-version: "3.12"

      - name: Install Rust toolchain
        uses: actions-rust-lang/setup-rust-toolchain@v1
        with:
          target: ${{ matrix.target }}
          cache: false

      - uses: taiki-e/setup-cross-toolchain-action@v1
        with:
          target: ${{ matrix.target }}

      - name: Use static CRT
        shell: bash
        run: echo "RUSTFLAGS=${RUSTFLAGS} -C target-feature=+crt-static" >> "${GITHUB_ENV}"

      - name: Set release specific compilation flags
        if: steps.is-release.outputs.IS_RELEASE
        shell: bash
        run: |
          echo "CARGO_PROFILE_RELEASE_LTO=true" >> $GITHUB_ENV
          echo "CARGO_PROFILE_RELEASE_STRIP=true" >> $GITHUB_ENV

      - uses: Swatinem/rust-cache@v2

      - name: Ensure cache directory exists
        shell: bash
        if: matrix.os == 'ubuntu-20.04' && matrix.use-cross
        run: |
          mkdir -p ${XDG_CACHE_HOME}

      - name: Show version information (Rust, cargo, GCC)
        shell: bash
        run: |
          gcc --version || true
          rustup -V
          rustup toolchain list
          cargo -V
          rustc -V

      - name: Check for release
        id: is-release
        shell: bash
        run: |
          unset IS_RELEASE ; if [[ $GITHUB_REF =~ ^refs/tags/v[0-9].* ]]; then IS_RELEASE='true' ; fi
          echo "IS_RELEASE=${IS_RELEASE}" >> $GITHUB_OUTPUT

      - name: Build
        run: >
          cargo build
          --locked
          --release
          --manifest-path yen-rs/Cargo.toml
          ${{ steps.build-options.outputs.CARGO_BUILD_OPTIONS}}

      - name: Set binary name & path
        id: bin
        shell: bash
        run: |
          EXE_SUFFIX=""
          case ${{ matrix.target }} in
            *-pc-windows-*) EXE_SUFFIX=".exe" ;;
          esac;

          # Setup paths
          BIN_NAME="${{ needs.crate_metadata.outputs.name }}"
          BIN_PATH="yen-rs/target/${{ matrix.target }}/release/${BIN_NAME}"

          mv "$BIN_PATH${EXE_SUFFIX}" "$BIN_PATH-${{matrix.target}}${EXE_SUFFIX}"
          BIN_PATH="$BIN_PATH-${{matrix.target}}${EXE_SUFFIX}"

          # Let subsequent steps know where to find the binary
          echo "BIN_PATH=${BIN_PATH}" >> $GITHUB_OUTPUT
          echo "BIN_NAME=${BIN_NAME}" >> $GITHUB_OUTPUT

      - name: Run the binary
        shell: bash
        run: |
          ${{ steps.bin.outputs.BIN_PATH }} list &>> $GITHUB_STEP_SUMMARY

      - name: Run tests
        shell: bash
        run: |
          python -m venv venv
          if [ -d ./venv/bin ]; then VENV_BIN_PATH=./venv/bin; fi
          if [ -d ./venv/Scripts ]; then VENV_BIN_PATH=./venv/Scripts; fi
          ${VENV_BIN_PATH}/pip install -r requirements-dev.txt
          YEN_RUST_PATH=${{ steps.bin.outputs.BIN_PATH }} ${VENV_BIN_PATH}/pytest

      - name: "Artifact upload: binary"
        uses: actions/upload-artifact@master
        with:
          name: yen-${{ matrix.target }}
          path: ${{ steps.bin.outputs.BIN_PATH }}

      - name: Publish packages
        uses: softprops/action-gh-release@v1
        if: steps.is-release.outputs.IS_RELEASE
        with:
          draft: true
          files: |
            ${{ steps.bin.outputs.BIN_PATH }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}