如何在 Github actions 中同时运行服务器

Question

我已经配置了以下 github actions 文件

name: Python application

on:
  push:
    branches: [ "app" ]
  pull_request:
    branches: [ "app" ]

permissions:
  contents: read

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v4
    - name: Set up Python 3.10
      uses: actions/setup-python@v3
      with:
        python-version: "3.10"
    - name: Install dependencies
      run: |
        make install 
    - name: Lint with pylint
      run: |
        make lint
    - name: Start Fastapi service 
      run: |
        nohup make serve 
    - name: Test with pytest
      run: |
        make test 

这里的Makefile如下

install: 
    pip install -r requirements.txt 

lint: 
    pylint --disable=R,C *.py 

serve: 
    python app.py 

test: 
    python -m pytest -vv test_app.py 

问题是，当我运行 makeserve 命令时，服务器启动，然后无限地继续，永远不会到达测试部分。如何配置我的操作工作流程，以便服务器在后端运行并开始测试。我尝试过使用nohup，但没有成功。我还能做什么？

我尝试使用 nohup 命令。但下一个命令不会自行提示。它会一直等到服务器必须关闭。-

Answer 1

您遇到的问题是，当您运行命令 nohup makeserve 时，它会在后台启动 FastAPI 服务器，但不会立即将控制权释放回 GitHub Actions 工作流程。由于服务器无限期地运行，因此后续的 make test 命令不会按预期执行。

要解决此问题，您可以以允许 GitHub Actions 工作流程继续执行后续步骤（例如运行测试）的方式运行 FastAPI 服务。

name: Python application

on:
  push:
    branches: [ "app" ]
  pull_request:
    branches: [ "app" ]

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v4
    - name: Set up Python 3.10
      uses: actions/setup-python@v3
      with:
        python-version: "3.10"
    - name: Install dependencies
      run: |
        make install 
    - name: Start FastAPI service
      run: |
        make serve &
        sleep 5  # Give the server some time to start
    - name: Wait for FastAPI service to start
      run: |
        for i in {1..10}; do
          if curl -s http://localhost:8000/; then
            echo "Service is up!"
            break
          fi
          echo "Waiting for service to start..."
          sleep 5
        done
    - name: Test with pytest
      run: |
        make test 

进行这些更改后，您的服务器应该在后台运行，以便随后执行测试。