1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
from asyncio import sleep
from typing import Awaitable, Callable
from pyinstrument import Profiler
try:
from aiohttp import web
except ImportError:
print("This example requires aiohttp.")
print("Install using `pip install aiohttp`.")
exit(1)
@web.middleware
async def profiler_middleware(
request: web.Request,
handler: Callable[[web.Request], Awaitable[web.StreamResponse]],
) -> web.StreamResponse:
with Profiler() as p:
await handler(request)
return web.Response(text=p.output_html(), content_type="text/html")
routes = web.RouteTableDef()
@routes.get("/")
async def get_handler(request: web.Request) -> web.Response:
y = 1
for x in range(1, 10000):
y *= x
await sleep(0.1)
return web.Response(text="Hello, world!")
def dev_init(argv):
"""Run: python3 -m aiohttp.web -H localhost aiohttp_hello:dev_init"""
app = web.Application(middlewares=(profiler_middleware,))
app.add_routes(routes)
return app
|
