257 lines
7.1 KiB
Python
257 lines
7.1 KiB
Python
"""
|
|
FastAPI 应用主入口
|
|
"""
|
|
import logging
|
|
import logging.handlers
|
|
import sys
|
|
import uuid
|
|
from contextlib import asynccontextmanager
|
|
from typing import Callable
|
|
from functools import wraps
|
|
|
|
from fastapi import FastAPI, Request, Response
|
|
from fastapi.middleware.cors import CORSMiddleware
|
|
from starlette.middleware.base import BaseHTTPMiddleware
|
|
|
|
from app.config import settings
|
|
from app.api import api_router
|
|
from app.core.database import mysql_db, mongodb, redis_db
|
|
|
|
# ==================== 日志配置 ====================
|
|
|
|
def setup_logging():
|
|
"""配置应用日志系统"""
|
|
import os
|
|
from pathlib import Path
|
|
|
|
# 根日志配置
|
|
log_level = logging.DEBUG if settings.DEBUG else logging.INFO
|
|
|
|
# 日志目录
|
|
log_dir = Path("data/logs")
|
|
log_dir.mkdir(parents=True, exist_ok=True)
|
|
|
|
# 日志文件路径
|
|
log_file = log_dir / "app.log"
|
|
error_log_file = log_dir / "error.log"
|
|
|
|
# 控制台处理器
|
|
console_handler = logging.StreamHandler(sys.stdout)
|
|
console_handler.setLevel(log_level)
|
|
console_formatter = logging.Formatter(
|
|
fmt="%(asctime)s | %(levelname)-8s | %(name)s:%(lineno)d | %(message)s",
|
|
datefmt="%Y-%m-%d %H:%M:%S"
|
|
)
|
|
console_handler.setFormatter(console_formatter)
|
|
|
|
# 文件处理器 (所有日志)
|
|
file_handler = logging.handlers.RotatingFileHandler(
|
|
log_file,
|
|
maxBytes=10 * 1024 * 1024, # 10MB
|
|
backupCount=5,
|
|
encoding="utf-8"
|
|
)
|
|
file_handler.setLevel(logging.DEBUG)
|
|
file_formatter = logging.Formatter(
|
|
fmt="%(asctime)s | %(levelname)-8s | %(name)s:%(lineno)d | %(funcName)s | %(message)s",
|
|
datefmt="%Y-%m-%d %H:%M:%S"
|
|
)
|
|
file_handler.setFormatter(file_formatter)
|
|
|
|
# 错误日志处理器 (仅ERROR及以上)
|
|
error_file_handler = logging.handlers.RotatingFileHandler(
|
|
error_log_file,
|
|
maxBytes=10 * 1024 * 1024, # 10MB
|
|
backupCount=5,
|
|
encoding="utf-8"
|
|
)
|
|
error_file_handler.setLevel(logging.ERROR)
|
|
error_file_handler.setFormatter(file_formatter)
|
|
|
|
# 根日志器
|
|
root_logger = logging.getLogger()
|
|
root_logger.setLevel(logging.DEBUG)
|
|
root_logger.handlers = []
|
|
root_logger.addHandler(console_handler)
|
|
root_logger.addHandler(file_handler)
|
|
root_logger.addHandler(error_file_handler)
|
|
|
|
# 第三方库日志级别
|
|
for lib in ["uvicorn", "uvicorn.access", "fastapi", "httpx", "sqlalchemy"]:
|
|
logging.getLogger(lib).setLevel(logging.WARNING)
|
|
|
|
root_logger.info(f"日志系统初始化完成 | 日志目录: {log_dir}")
|
|
root_logger.info(f"主日志文件: {log_file} | 错误日志: {error_log_file}")
|
|
|
|
return root_logger
|
|
|
|
# 初始化日志
|
|
setup_logging()
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
# ==================== 请求日志中间件 ====================
|
|
|
|
class RequestLoggingMiddleware(BaseHTTPMiddleware):
|
|
"""请求日志中间件 - 记录每个请求的详细信息"""
|
|
|
|
async def dispatch(self, request: Request, call_next: Callable) -> Response:
|
|
# 生成请求ID
|
|
request_id = str(uuid.uuid4())[:8]
|
|
request.state.request_id = request_id
|
|
|
|
# 记录请求
|
|
logger.info(f"→ [{request_id}] {request.method} {request.url.path}")
|
|
|
|
try:
|
|
response = await call_next(request)
|
|
|
|
# 记录响应
|
|
logger.info(
|
|
f"← [{request_id}] {request.method} {request.url.path} "
|
|
f"| 状态: {response.status_code} | 耗时: N/A"
|
|
)
|
|
|
|
# 添加请求ID到响应头
|
|
response.headers["X-Request-ID"] = request_id
|
|
return response
|
|
|
|
except Exception as e:
|
|
logger.error(f"✗ [{request_id}] {request.method} {request.url.path} | 异常: {str(e)}")
|
|
raise
|
|
|
|
|
|
# ==================== 请求追踪装饰器 ====================
|
|
|
|
def log_async_function(func: Callable) -> Callable:
|
|
"""异步函数日志装饰器"""
|
|
@wraps(func)
|
|
async def wrapper(*args, **kwargs):
|
|
func_name = func.__name__
|
|
logger.debug(f"→ {func_name} 开始执行")
|
|
try:
|
|
result = await func(*args, **kwargs)
|
|
logger.debug(f"← {func_name} 执行完成")
|
|
return result
|
|
except Exception as e:
|
|
logger.error(f"✗ {func_name} 执行失败: {str(e)}")
|
|
raise
|
|
return wrapper
|
|
|
|
|
|
@asynccontextmanager
|
|
async def lifespan(app: FastAPI):
|
|
"""
|
|
应用生命周期管理
|
|
|
|
启动时: 初始化数据库连接
|
|
关闭时: 关闭数据库连接
|
|
"""
|
|
# 启动时
|
|
logger.info("正在初始化数据库连接...")
|
|
|
|
# 初始化 MySQL
|
|
try:
|
|
await mysql_db.init_db()
|
|
logger.info("✓ MySQL 初始化成功")
|
|
except Exception as e:
|
|
logger.error(f"✗ MySQL 初始化失败: {e}")
|
|
|
|
# 初始化 MongoDB
|
|
try:
|
|
await mongodb.connect()
|
|
await mongodb.create_indexes()
|
|
logger.info("✓ MongoDB 初始化成功")
|
|
except Exception as e:
|
|
logger.error(f"✗ MongoDB 初始化失败: {e}")
|
|
|
|
# 初始化 Redis
|
|
try:
|
|
await redis_db.connect()
|
|
logger.info("✓ Redis 初始化成功")
|
|
except Exception as e:
|
|
logger.error(f"✗ Redis 初始化失败: {e}")
|
|
|
|
logger.info("数据库初始化完成")
|
|
yield
|
|
|
|
# 关闭时
|
|
logger.info("正在关闭数据库连接...")
|
|
await mysql_db.close()
|
|
await mongodb.close()
|
|
await redis_db.close()
|
|
logger.info("数据库连接已关闭")
|
|
|
|
|
|
# 创建 FastAPI 应用实例
|
|
app = FastAPI(
|
|
title=settings.APP_NAME,
|
|
description="基于大语言模型的文档理解与多源数据融合系统",
|
|
version="1.0.0",
|
|
openapi_url=f"{settings.API_V1_STR}/openapi.json",
|
|
docs_url=f"{settings.API_V1_STR}/docs",
|
|
redoc_url=f"{settings.API_V1_STR}/redoc",
|
|
lifespan=lifespan, # 添加生命周期管理
|
|
)
|
|
|
|
# 配置 CORS 中间件
|
|
app.add_middleware(
|
|
CORSMiddleware,
|
|
allow_origins=["*"],
|
|
allow_credentials=True,
|
|
allow_methods=["*"],
|
|
allow_headers=["*"],
|
|
)
|
|
|
|
# 添加请求日志中间件
|
|
app.add_middleware(RequestLoggingMiddleware)
|
|
|
|
# 注册 API 路由
|
|
app.include_router(api_router, prefix=settings.API_V1_STR)
|
|
|
|
|
|
@app.get("/")
|
|
async def root():
|
|
"""根路径"""
|
|
return {
|
|
"message": f"Welcome to {settings.APP_NAME}",
|
|
"status": "online",
|
|
"version": "1.0.0",
|
|
"debug_mode": settings.DEBUG,
|
|
"api_docs": f"{settings.API_V1_STR}/docs"
|
|
}
|
|
|
|
|
|
@app.get("/health")
|
|
async def health_check():
|
|
"""
|
|
健康检查接口
|
|
|
|
返回各数据库连接状态
|
|
"""
|
|
# 检查各数据库连接状态
|
|
mysql_status = "connected" if mysql_db.async_engine else "disconnected"
|
|
mongodb_status = "connected" if mongodb.client else "disconnected"
|
|
redis_status = "connected" if redis_db.is_connected else "disconnected"
|
|
|
|
return {
|
|
"status": "healthy",
|
|
"service": settings.APP_NAME,
|
|
"databases": {
|
|
"mysql": mysql_status,
|
|
"mongodb": mongodb_status,
|
|
"redis": redis_status,
|
|
}
|
|
}
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import uvicorn
|
|
|
|
uvicorn.run(
|
|
"app.main:app",
|
|
host="127.0.0.1",
|
|
port=8000,
|
|
reload=settings.DEBUG
|
|
)
|