FastAPI Process Restarter
一个基于 FastAPI 的通用进程管理和重启工具,支持跨平台(Linux/macOS/Windows)。
功能特性
- 🚀 一键重启: 通过 HTTP API 重启任何命令/脚本
- 🔄 自动重启: 进程崩溃后自动恢复(v0.2.0+)
- 🖥️ 跨平台支持: 原生兼容 Linux、macOS 和 Windows
- 📊 状态监控: 实时查看进程运行状态和 PID
- 🧩 易于集成: 可作为子应用挂载到现有 FastAPI 项目
- 🔧 CLI 工具: 提供命令行工具,开箱即用
安装
pip install fastapi-process-restarter
使用方法
方式一:命令行工具 (CLI)
安装后,直接在终端使用 restarter 命令:
# 基本用法
restarter --cmd "python main.py"
# 指定端口
restarter --cmd "python main.py" --port 9000
# 启用自动重启(进程崩溃后自动恢复)
restarter --cmd "python main.py" -a
# 自定义检查间隔(默认 3 秒)
restarter --cmd "python main.py" -a --check-interval 5.0
# 完整参数示例
restarter -c "node server.js" --host 127.0.0.1 -p 8080 -a --check-interval 2.0
CLI 参数说明:
| 参数 | 简写 | 说明 | 默认值 |
|---|---|---|---|
--cmd |
-c |
要运行的命令(必需) | - |
--host |
- | API 监听地址 | 0.0.0.0 |
--port |
-p |
API 端口 | 8080 |
--auto-restart |
-a |
进程崩溃后自动重启 | False |
--check-interval |
- | 自动重启检查间隔(秒) | 3.0 |
API 端点:
POST /restart- 手动重启进程GET /status- 获取进程状态(包含 auto_restart 配置信息)
示例:
# 启动带自动重启的服务
restarter --cmd "python main.py" -a --check-interval 3.0
# 手动重启进程
curl -X POST http://localhost:8080/restart
# 查看状态
curl http://localhost:8080/status
# 输出示例:
# {"running":true,"pid":12345,"auto_restart":true,"check_interval":3.0}
方式二:Python API 集成
在现有 FastAPI 项目中作为子应用挂载:
from fastapi import FastAPI
from process_restarter import create_app
# 你的主应用
main_app = FastAPI()
@main_app.get("/")
def home():
return {"message": "Hello World"}
# 挂载进程重启器(启用自动重启)
cmd_app = create_app(
cmd="node server.js",
auto_restart=True, # 启用自动重启
check_interval=5.0 # 每 5 秒检查一次
)
main_app.mount("/subsystem", cmd_app)
# 现在可以通过以下端点操作:
# POST /subsystem/restart - 手动重启 node server.js
# GET /subsystem/status - 查看进程状态
也可以直接使用 ProcessManager:
from process_restarter import ProcessManager
# 创建管理器(启用自动重启)
manager = ProcessManager(
cmd="python worker.py",
auto_restart=True,
check_interval=3.0
)
manager.start() # 启动进程(同时启动监控线程)
manager.restart() # 手动重启进程
manager.stop() # 停止进程和监控线程
技术细节
- 跨平台进程管理:
- Linux/macOS: 使用
os.setsid创建进程组 - Windows: 使用
CREATE_NEW_PROCESS_GROUP创建进程组
- Linux/macOS: 使用
- 自动重启机制:
- 独立守护线程每 N 秒检查进程状态
- 进程退出时自动重新启动
- 支持自定义检查间隔
- 生命周期管理:使用 FastAPI
@asynccontextmanager确保程序退出时子进程被清理 - 日志桥接:子进程输出实时转发到主进程 stdout
版本历史
v0.2.0
- 新增自动重启功能 (
--auto-restart,-a) - 新增检查间隔配置 (
--check-interval) /status接口返回自动重启配置信息
v0.1.0
- 初始版本
- 进程启动/停止/重启功能
- FastAPI 接口支持
- CLI 命令行工具
许可证
MIT License
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