FastAPI（32）- Dependencies in path operation 通过路径操作装饰器的 dependencies 参数声明依赖

#!usr/bin/env python
# -*- coding:utf-8 _*-
"""
# author: 小菠萝测试笔记
# blog:  https://www.cnblogs.com/poloyy/
# time: 2021/9/25 12:52 下午
# file: 28_path_depends.py
"""
from typing import Optional

import uvicorn
from fastapi import Depends, FastAPI, HTTPException, Header

app = FastAPI()


# 1、第一个依赖，验证请求头中的 x_token
async def verify_token(x_token: str = Header(...)):
    if x_token != "fake-super-secret-token":
        # 验证失败，则抛出异常
        raise HTTPException(status_code=400, detail="X-Token header invalid")
    # 没有 return


# 2、第二个依赖，验证请求头中的 x_key
async def verify_key(x_key: str = Header(...)):
    if x_key != "fake-super-secret-key":
        # 验证失败，则抛出异常
        raise HTTPException(status_code=400, detail="X-Key header invalid")
    # 有 return
    return x_key


@app.get("/items",
         dependencies=[
             # 声明了两个依赖，是一个数组哦
             Depends(verify_token),
             Depends(verify_key)]
         )
async def read_item():
    return [{"item": "Foo"}, {"item": "Bar"}]


if __name__ == "__main__":
    uvicorn.run(app="28_path_depends:app", host="127.0.0.1", port=8080, reload=True, debug=True) 

@app.get("/items/", dependencies=[Depends(verify_token), Depends(verify_key)])

async def read_query(query_or_default: str = Depends(query_or_cookie_extractor)):
    pass