fastapi-events fastapi 异步事件分发处理扩展

fastapi-events fastapi 异步事件分发处理扩展，提供了本地，以及远程消息处理能力，同时包含了一些内置的handler，对于自定义handler 也是比较灵活的

参考使用

• app.py

from fastapi import FastAPI

from fastapi.requests import Request

from fastapi.responses import JSONResponse

 

from fastapi_events.dispatcher import dispatch

from fastapi_events.middleware import EventHandlerASGIMiddleware

from fastapi_events.handlers.local import local_handler

app = FastAPI()

app.add_middleware(EventHandlerASGIMiddleware, 

                   handlers=[local_handler])   # registering handler(s)

@app.get("/")

def index(request: Request) -> JSONResponse:

    dispatch("my-fancy-event", payload={"id": 1})  # Emit events anywhere in your code

    return JSONResponse()    

• 自定义handler 处理

from fastapi_events.handlers.local import local_handler

from fastapi_events.typing import Event

 

 

@local_handler.register(event_name="cat*")

def handle_all_cat_events(event: Event):

    """

    this handler will match with an events prefixed with `cat`.

    ex: "cat_eats_a_fish", "cat_is_cute", etc

    """

    # the `event` argument is nothing more than a tuple of event name and payload

    event_name, payload = event

 

    # TODO do anything you'd like with the event

 

 

@local_handler.register(event_name="cat*")  # Tip: You can register several handlers with the same event name

def handle_all_cat_events_another_way(event: Event):

    pass

 

 

@local_handler.register(event_name="*")

async def handle_all_events(event: Event):

    # event handlers can be coroutine function too (`async def`)

    pass

说明

在项目中使用此模块可以实现异步的消息处理，实现灵活的业务处理

参考资料

https://github.com/melvinkcx/fastapi-events