File size: 2,047 Bytes
5b76e0f | 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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | from __future__ import annotations
import asyncio
from aiohttp.web import run_app
from aiohttp.web_app import Application
from aiohttp.web_request import Request
from aiohttp.web_routedef import get
from aiohttp.web_ws import WebSocketResponse
from textual.devtools.client import DEVTOOLS_PORT
from textual.devtools.service import DevtoolsService
DEFAULT_SIZE_CHANGE_POLL_DELAY_SECONDS = 2
async def websocket_handler(request: Request) -> WebSocketResponse:
"""aiohttp websocket handler for sending data between devtools client and server
Args:
request (Request): The request to the websocket endpoint
Returns:
WebSocketResponse: The websocket response
"""
service: DevtoolsService = request.app["service"]
return await service.handle(request)
async def _on_shutdown(app: Application) -> None:
"""aiohttp shutdown handler, called when the aiohttp server is stopped"""
service: DevtoolsService = app["service"]
await service.shutdown()
async def _on_startup(app: Application) -> None:
service: DevtoolsService = app["service"]
await service.start()
def _run_devtools(verbose: bool, exclude: list[str] | None = None) -> None:
app = _make_devtools_aiohttp_app(verbose=verbose, exclude=exclude)
def noop_print(_: str):
return None
run_app(app, port=DEVTOOLS_PORT, print=noop_print, loop=asyncio.get_event_loop())
def _make_devtools_aiohttp_app(
size_change_poll_delay_secs: float = DEFAULT_SIZE_CHANGE_POLL_DELAY_SECONDS,
verbose: bool = False,
exclude: list[str] | None = None,
) -> Application:
app = Application()
app.on_shutdown.append(_on_shutdown)
app.on_startup.append(_on_startup)
app["verbose"] = verbose
app["service"] = DevtoolsService(
update_frequency=size_change_poll_delay_secs, verbose=verbose, exclude=exclude
)
app.add_routes(
[
get("/textual-devtools-websocket", websocket_handler),
]
)
return app
if __name__ == "__main__":
_run_devtools()
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