孔FastApi连接

Question

我是新来的FastApi，和孔API-网关！

我正在尝试从江港API网关调用fastAPI应用程序。

fastAPI应用程序运行良好，但当我尝试从Kong访问它(将其作为服务添加并为服务配置路由后)，它将失败，显示以下错误：

Failed to load API definition. 
Fetch error
Not Found /openapi.json

FastAPI代码如下：

from typing import Union

from fastapi.openapi.docs import (
    get_redoc_html,
    get_swagger_ui_html,
    get_swagger_ui_oauth2_redirect_html,
)

import uvicorn
from fastapi import FastAPI, File, UploadFile

from application import predict, read_imagefile, explain#,read_model
app = FastAPI(
        title="XAI_FASTAPI",
        version=0.1
)
@app.post("/predict/image")
async def predict_api(file: UploadFile = File(...)):
    extension = file.filename.split(".")[-1] in ("jpg", "jpeg", "png")
    if not extension:
        return "Image must be jpg or png format!"
    image = read_imagefile(await file.read())
    prediction = predict(image)
    return prediction


@app.get("/docs", include_in_schema=False)
async def custom_swagger_ui_html():
    return get_swagger_ui_html(
        openapi_url=app.openapi_url,
        title=app.title + " - Swagger UI",
        oauth2_redirect_url=app.swagger_ui_oauth2_redirect_url,
        swagger_js_url="/static/swagger-ui-bundle.js",
        swagger_css_url="/static/swagger-ui.css",
    )


@app.get(app.swagger_ui_oauth2_redirect_url, include_in_schema=False)
async def swagger_ui_redirect():
    return get_swagger_ui_oauth2_redirect_html()

我怎么能解决这个问题。

谢谢

Answer 1

您需要正确配置openapi_url和docs_url。这在我的情况下是可行的：

FastAPI：

def create_application() -> FastAPI:
    application = FastAPI(openapi_url="/building/openapi.json", docs_url="/building/docs")

    application.include_router(create_building.router, prefix="/building", tags=["building"])
    application.include_router(modify_building.router, prefix="/building", tags=["building"])
    application.include_router(get_building.router, prefix="/building", tags=["building"])
    application.include_router(get_buildings.router, prefix="/building", tags=["building"])
    application.include_router(remove_building.router, prefix="/building", tags=["building"])
    application.include_router(assign_users_to_building.router, prefix="/building", tags=["building"])
    return application


app = create_application()

kong.yml文件：

_format_version: "3.0"
_transform: true

services:
  - name: building_service
    url: http://building_service/building
    routes:
    - name: building_service_route
      paths:
      - /building