check-protos.yml

name: Check Generated Protos

on:
  push:
    paths:
      - 'ldk-server-grpc/**'
  pull_request:
    paths:
      - 'ldk-server-grpc/**'
  workflow_dispatch:

permissions:
  contents: read

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

jobs:
  check-protos:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout source code
        uses: actions/checkout@v6
      - name: Install Rust stable toolchain
        run: |
          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile=minimal --default-toolchain stable
      - name: Install protoc
        run: sudo apt-get install -y protobuf-compiler
      - name: Generate protos
        run: RUSTFLAGS="--cfg genproto" cargo build -p ldk-server-grpc
      - name: Format generated code
        run: rustup component add rustfmt && cargo fmt --all
      - name: Check for differences
        run: |
          if ! git diff --exit-code; then
            echo "error: Generated protobuf files are out of date. Run: RUSTFLAGS=\"--cfg genproto\" cargo build -p ldk-server-grpc && cargo fmt --all"
            exit 1
          fi