127 lines
4 KiB
Python
127 lines
4 KiB
Python
import functools
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import logging
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from pathlib import Path
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from typing import Any
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import socketio
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from aiohttp import web
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from app.library.router import RouteType, get_routes
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from app.library.Services import Services
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from app.library.Utils import load_modules
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from .config import Config
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from .DownloadQueue import DownloadQueue
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from .encoder import Encoder
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from .Events import Event, EventBus, Events
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from .ItemDTO import Item
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LOG: logging.Logger = logging.getLogger("socket_api")
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class HttpSocket:
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"""
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This class is used to handle WebSocket events.
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"""
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config: Config
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sio: socketio.AsyncServer
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queue: DownloadQueue
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di_context: dict[str, Any] = {}
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def __init__(
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self,
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root_path: Path,
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queue: DownloadQueue | None = None,
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encoder: Encoder | None = None,
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config: Config | None = None,
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sio: socketio.AsyncServer | None = None,
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):
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self.config = config or Config.get_instance()
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self.queue = queue or DownloadQueue.get_instance()
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self._notify = EventBus.get_instance()
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self.sio = sio or socketio.AsyncServer(
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async_handlers=True,
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async_mode="aiohttp",
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cors_allowed_origins=[],
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transports=["websocket", "polling"],
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logger=self.config.debug,
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engineio_logger=self.config.debug,
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ping_interval=10,
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ping_timeout=5,
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)
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encoder = encoder or Encoder()
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self.rootPath: Path = root_path
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async def event_handler(e: Event, _, **kwargs):
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await self.sio.emit(event=e.event, data=encoder.encode(e), **kwargs)
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services = Services.get_instance()
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services.add_all(
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{
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k: v
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for k, v in {
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"config": self.config,
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"queue": self.queue,
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"sio": self.sio,
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"encoder": encoder,
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"notify": self._notify,
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"root_path": self.rootPath,
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}.items()
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if not services.has(k)
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}
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)
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self._notify.subscribe("frontend", event_handler, f"{__class__.__name__}.emit")
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@staticmethod
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def ws_event(func): # type: ignore
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"""
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Decorator to mark a method as a socket event.
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"""
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@functools.wraps(func) # type: ignore
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async def wrapper(*args, **kwargs):
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return await func(*args, **kwargs) # type: ignore
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wrapper._ws_event = func.__name__ # type: ignore
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return wrapper
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async def on_shutdown(self, _: web.Application):
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LOG.debug("Shutting down socket server.")
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for sid in self.sio.manager.get_participants("/", None):
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LOG.debug(f"Disconnecting client '{sid}'.")
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await self.sio.disconnect(sid[0], namespace="/")
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LOG.debug("Socket server shutdown complete.")
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def attach(self, app: web.Application):
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app.on_shutdown.append(self.on_shutdown)
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self.sio.attach(app, socketio_path=f"{self.config.base_path.rstrip('/')}/socket.io")
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async def event_handler(data: Event, _):
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if data and data.data:
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await self.queue.add(item=Item.format(data.data))
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self._notify.subscribe(Events.ADD_URL, event_handler, f"{__class__.__name__}.add")
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load_modules(self.rootPath, self.rootPath / "routes" / "socket")
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for route in get_routes(RouteType.SOCKET).values():
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if self.config.debug:
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LOG.debug(
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f"Add ({route.name}) {route.method.value if isinstance(route.method, RouteType) else route.method}: {route.path}."
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)
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self.sio.on(route.path)(HttpSocket._injector(route.handler, route.path))
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@staticmethod
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def _injector(func, event: str):
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async def wrapper(sid, data=None, **kwargs):
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if not data:
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data = {}
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return await Services.get_instance().handle_async(func, sid=sid, data=data, event=event, **kwargs)
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return wrapper
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