rust.yml

name: Rust test CI

on:
    workflow_dispatch:
    push:
        branches: [master, main]
    pull_request:

env:
    CARGO_TERM_COLOR: always

jobs:
    # Job to decide if we should run rust ci
    # See https://github.com/dorny/paths-filter#conditional-execution for more details
    changes:
        runs-on: ubuntu-latest
        timeout-minutes: 5
        if: github.repository == 'PostHog/posthog'
        name: Determine need to run rust checks
        # Set job outputs to values from filter step
        outputs:
            rust: ${{ steps.filter.outputs.rust }}
        steps:
            # For pull requests it's not necessary to checkout the code, but we
            # also want this to run on master so we need to checkout
            - uses: actions/checkout@v3
            - uses: dorny/paths-filter@v2
              id: filter
              with:
                  filters: |
                      rust:
                        # Avoid running rust tests for irrelevant changes
                        - 'rust/**'
                        - '.github/workflows/rust.yml'
                        - '.github/workflows/rust-docker-build.yml'
                        - '.github/workflows/rust-hook-migrator-docker.yml'

    build:
        name: Build rust services
        needs: changes
        runs-on: depot-ubuntu-22.04-4

        defaults:
            run:
                working-directory: rust

        steps:
            # Checkout project code
            # Use sparse checkout to only select files in rust directory
            # Turning off cone mode ensures that files in the project root are not included during checkout
            - uses: actions/checkout@v3
              if: needs.changes.outputs.rust == 'true'
              with:
                  sparse-checkout: 'rust/'
                  sparse-checkout-cone-mode: false

            - name: Install rust
              if: needs.changes.outputs.rust == 'true'
              uses: dtolnay/rust-toolchain@1.77

            - uses: actions/cache@v4
              if: needs.changes.outputs.rust == 'true'
              with:
                  path: |
                      ~/.cargo/registry
                      ~/.cargo/git
                      rust/target
                  key: ${{ runner.os }}-cargo-release-${{ hashFiles('**/Cargo.lock') }}

            - name: Run cargo build
              if: needs.changes.outputs.rust == 'true'
              run: cargo build --all --locked --release && find target/release/ -maxdepth 1 -executable -type f | xargs strip

    test:
        name: Test rust services
        needs: changes
        runs-on: depot-ubuntu-22.04-4
        timeout-minutes: 10

        defaults:
            run:
                working-directory: rust

        steps:
            # Checkout project code
            # Use sparse checkout to only select files in rust directory
            # Turning off cone mode ensures that files in the project root are not included during checkout
            - uses: actions/checkout@v3
              if: needs.changes.outputs.rust == 'true'
              with:
                  sparse-checkout: 'rust/'
                  sparse-checkout-cone-mode: false

            - name: Login to DockerHub
              if: needs.changes.outputs.rust == 'true'
              uses: docker/login-action@v2
              continue-on-error: true
              with:
                  username: posthog
                  password: ${{ secrets.DOCKERHUB_TOKEN }}

            - name: Setup dependencies
              if: needs.changes.outputs.rust == 'true'
              run: |
                  docker compose up kafka redis db echo_server -d --wait
                  docker compose up setup_test_db
                  echo "127.0.0.1 kafka" | sudo tee -a /etc/hosts

            - name: Install rust
              if: needs.changes.outputs.rust == 'true'
              uses: dtolnay/rust-toolchain@1.77

            - uses: actions/cache@v4
              if: needs.changes.outputs.rust == 'true'
              with:
                  path: |
                      ~/.cargo/registry
                      ~/.cargo/git
                      rust/target
                  key: ${ runner.os }-cargo-debug-${{ hashFiles('**/Cargo.lock') }}

            - name: Run cargo test
              if: needs.changes.outputs.rust == 'true'
              run: cargo test --all-features

    linting:
        name: Lint rust services
        needs: changes
        runs-on: depot-ubuntu-22.04-4

        defaults:
            run:
                working-directory: rust

        steps:
            # Checkout project code
            # Use sparse checkout to only select files in rust directory
            # Turning off cone mode ensures that files in the project root are not included during checkout
            - uses: actions/checkout@v3
              if: needs.changes.outputs.rust == 'true'
              with:
                  sparse-checkout: 'rust/'
                  sparse-checkout-cone-mode: false

            - name: Install rust
              if: needs.changes.outputs.rust == 'true'
              uses: dtolnay/rust-toolchain@1.77
              with:
                  components: clippy,rustfmt

            - uses: actions/cache@v4
              if: needs.changes.outputs.rust == 'true'
              with:
                  path: |
                      ~/.cargo/registry
                      ~/.cargo/git
                      rust/target
                  key: ${{ runner.os }}-cargo-debug-${{ hashFiles('**/Cargo.lock') }}

            - name: Check format
              if: needs.changes.outputs.rust == 'true'
              run: cargo fmt -- --check

            - name: Run clippy
              if: needs.changes.outputs.rust == 'true'
              run: cargo clippy -- -D warnings

            - name: Run cargo check
              if: needs.changes.outputs.rust == 'true'
              run: cargo check --all-features

    shear:
        name: Shear rust services
        needs: changes
        runs-on: depot-ubuntu-22.04-4

        defaults:
            run:
                working-directory: rust

        steps:
            # Checkout project code
            # Use sparse checkout to only select files in rust directory
            # Turning off cone mode ensures that files in the project root are not included during checkout
            - uses: actions/checkout@v3
              if: needs.changes.outputs.rust == 'true'
              with:
                  sparse-checkout: 'rust/'
                  sparse-checkout-cone-mode: false

            - name: Install cargo-binstall
              if: needs.changes.outputs.rust == 'true'
              uses: cargo-bins/cargo-binstall@main

            - name: Install cargo-shear
              if: needs.changes.outputs.rust == 'true'
              run: cargo binstall --no-confirm cargo-shear

            - run: cargo shear
              if: needs.changes.outputs.rust == 'true'