build.yml

name: build

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

jobs:
  changes:
    runs-on: ubuntu-22.04
    outputs:
      run_build: ${{ steps.delta.outputs.run_build }}
      diff_range: ${{ steps.delta.outputs.diff_range }}
    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        fetch-depth: 0
    - name: Detect non-doc and non-tool changes in current update
      id: delta
      shell: bash
      run: |
        set -euo pipefail

        event="${{ github.event_name }}"
        action="${{ github.event.action || '' }}"
        before="${{ github.event.before || '' }}"
        after="${{ github.event.after || '' }}"
        base_sha="${{ github.event.pull_request.base.sha || '' }}"
        head_sha="${{ github.event.pull_request.head.sha || github.sha }}"
        before_valid="false"
        if [[ -n "$before" && ! "$before" =~ ^0+$ ]]; then
          before_valid="true"
        fi

        if [[ "$event" == "pull_request" && "$action" == "synchronize" && "$before_valid" == "true" && -n "$after" ]]; then
          range="${before}...${after}"
        elif [[ "$event" == "pull_request" && -n "$base_sha" && -n "$head_sha" ]]; then
          range="${base_sha}...${head_sha}"
        elif [[ "$event" == "push" && "$before_valid" == "true" && -n "$after" ]]; then
          range="${before}...${after}"
        elif [[ "$event" == "push" && -n "$after" ]]; then
          range="${after}^...${after}"
        else
          range="HEAD~1...HEAD"
        fi

        echo "diff_range=${range}" >> "$GITHUB_OUTPUT"

        diff_failed="false"
        if files="$(git diff --name-only "$range")"; then
          :
        else
          diff_failed="true"
          files=""
        fi
        echo "changed files in ${range}:"
        printf '%s\n' "$files"

        run_build="false"
        if [[ "$diff_failed" == "true" || -z "$files" ]]; then
          run_build="true"
        else
          while IFS= read -r file; do
            [[ -z "$file" ]] && continue
            if [[ "$file" != docs/* && "$file" != tools/* && "$file" != *.md ]]; then
              run_build="true"
              break
            fi
          done <<< "$files"
        fi

        echo "run_build=${run_build}" >> "$GITHUB_OUTPUT"
        echo "run_build=${run_build}"

  build:
    needs: changes
    if: needs.changes.outputs.run_build == 'true'
    runs-on: ubuntu-22.04
    steps:
    - name: Install libaio
      run: sudo apt-get install -y libaio1 libaio-dev
    - name: Checkout repository
      uses: actions/checkout@v4
    - name: Setup Rust
      uses: actions-rust-lang/setup-rust-toolchain@v1
      with:
        toolchain: stable
        components: llvm-tools
    - name: Install cargo-nextest
      uses: taiki-e/install-action@nextest
    - name: Install cargo-llvm-cov
      uses: taiki-e/install-action@cargo-llvm-cov
    - name: Clippy (default backend)
      run: cargo clippy -p doradb-storage --all-targets -- -D warnings
    - name: Validate with cargo llvm-cov nextest
      env:
        CARGO_TARGET_DIR: "target/coverage"
        CARGO_LLVM_COV_TARGET_DIR: "target/coverage/llvm-cov-target"
        RUST_BACKTRACE: "full"
      run: cargo llvm-cov nextest --no-report -p doradb-storage --profile ci
    - name: Validate alternate libaio backend
      env:
        RUST_BACKTRACE: "full"
      run: cargo nextest run -p doradb-storage --no-default-features --features libaio --profile ci
    - name: Upload nextest JUnit reports
      if: ${{ always() }}
      uses: actions/upload-artifact@v4
      with:
        name: nextest-junit
        if-no-files-found: warn
        path: |
          target/**/nextest/ci/junit.xml
    - name: Generate coverage report
      env:
        CARGO_TARGET_DIR: "target/coverage"
        CARGO_LLVM_COV_TARGET_DIR: "target/coverage/llvm-cov-target"
      run: >
        cargo llvm-cov report
        --lcov
        --output-path lcov.info
        --no-default-ignore-filename-regex
        --ignore-filename-regex '(^|/)(target|legacy)(/|$)|/\.cargo/(registry|git)/|/rustlib/src/rust/'
        -p doradb-storage
    - name: Upload to codecov.io
      uses: codecov/codecov-action@v5
      with:
        files: lcov.info
        token: ${{secrets.CODECOV_TOKEN}}

  docs-or-tools-only:
    needs: changes
    if: needs.changes.outputs.run_build != 'true'
    runs-on: ubuntu-22.04
    steps:
    - name: Skip heavy CI for docs-only or tools-only delta
      run: |
        echo "No non-doc and non-tool changes detected in update range: ${{ needs.changes.outputs.diff_range }}"
        echo "Compile/test jobs are intentionally skipped."