How to run an aiohttp server in a thread?

Question

This example of aiohttp server in a thread fails with an RuntimeError: There is no current event loop in thread \'Thread-1\'. error:

import thre         


        

Answer 1

There's a new API intended for this use case:

https://docs.aiohttp.org/en/stable/web_advanced.html#application-runners

from aiohttp import web
import asyncio


async def healthz(request):
    return web.Response(text="OK")

app = web.Application()
app.add_routes([web.get("/", healthz)])


async def runner():
    runner = web.AppRunner(app)
    await runner.setup()
    site = web.TCPSite(runner, "localhost", 8080)
    await site.start()


loop = asyncio.get_event_loop()
loop.run_until_complete(runner())