127 lines
3.9 KiB
Python
127 lines
3.9 KiB
Python
import functools
|
|
import inspect
|
|
import logging
|
|
from pathlib import Path
|
|
|
|
import socketio
|
|
from aiohttp import web
|
|
|
|
from app.library.router import RouteType, get_routes
|
|
from app.library.Utils import load_modules
|
|
|
|
from .config import Config
|
|
from .DownloadQueue import DownloadQueue
|
|
from .encoder import Encoder
|
|
from .Events import Event, EventBus, Events
|
|
from .ItemDTO import Item
|
|
|
|
LOG: logging.Logger = logging.getLogger("socket_api")
|
|
|
|
|
|
class HttpSocket:
|
|
"""
|
|
This class is used to handle WebSocket events.
|
|
"""
|
|
|
|
config: Config
|
|
sio: socketio.AsyncServer
|
|
queue: DownloadQueue
|
|
di_context: dict[str, object] = {}
|
|
|
|
def __init__(
|
|
self,
|
|
root_path: Path,
|
|
queue: DownloadQueue | None = None,
|
|
encoder: Encoder | None = None,
|
|
config: Config | None = None,
|
|
sio: socketio.AsyncServer | None = None,
|
|
):
|
|
self.config = config or Config.get_instance()
|
|
self.queue = queue or DownloadQueue.get_instance()
|
|
self._notify = EventBus.get_instance()
|
|
|
|
# logger=True, engineio_logger=True,
|
|
self.sio = sio or socketio.AsyncServer(
|
|
async_handlers=True,
|
|
async_mode="aiohttp",
|
|
cors_allowed_origins=[],
|
|
transports=["websocket", "polling"],
|
|
logger=self.config.debug,
|
|
engineio_logger=self.config.debug,
|
|
ping_interval=10,
|
|
ping_timeout=5,
|
|
)
|
|
encoder = encoder or Encoder()
|
|
self.rootPath = root_path
|
|
|
|
def emit(e: Event, _, **kwargs):
|
|
return self.sio.emit(event=e.event, data=encoder.encode(e.data), **kwargs)
|
|
|
|
self.di_context = {
|
|
"config": self.config,
|
|
"queue": self.queue,
|
|
"sio": self.sio,
|
|
"encoder": encoder,
|
|
"notify": self._notify,
|
|
}
|
|
|
|
self._notify.subscribe("frontend", emit, f"{__class__.__name__}.emit")
|
|
|
|
@staticmethod
|
|
def ws_event(func): # type: ignore
|
|
"""
|
|
Decorator to mark a method as a socket event.
|
|
"""
|
|
|
|
@functools.wraps(func) # type: ignore
|
|
async def wrapper(*args, **kwargs):
|
|
return await func(*args, **kwargs) # type: ignore
|
|
|
|
wrapper._ws_event = func.__name__ # type: ignore
|
|
return wrapper
|
|
|
|
async def on_shutdown(self, _: web.Application):
|
|
LOG.debug("Shutting down socket server.")
|
|
|
|
for sid in self.sio.manager.get_participants("/", None):
|
|
LOG.debug(f"Disconnecting client '{sid}'.")
|
|
await self.sio.disconnect(sid[0], namespace="/")
|
|
|
|
LOG.debug("Socket server shutdown complete.")
|
|
|
|
def attach(self, app: web.Application):
|
|
app.on_shutdown.append(self.on_shutdown)
|
|
|
|
self.sio.attach(app, socketio_path=f"{self.config.base_path.rstrip('/')}/socket.io")
|
|
self._notify.subscribe(
|
|
Events.ADD_URL,
|
|
lambda data, _, **kwargs: self.queue.add(item=Item.format(data.data)), # noqa: ARG005
|
|
f"{__class__.__name__}.add",
|
|
)
|
|
|
|
load_modules(self.rootPath, self.rootPath / "routes" / "socket")
|
|
|
|
for route in get_routes(RouteType.SOCKET).values():
|
|
LOG.debug(
|
|
f"Add ({route.name}) {route.method.value if isinstance(route.method,RouteType) else route.method}: {route.path}."
|
|
)
|
|
self.sio.on(route.path)(HttpSocket._injector(route.handler, route.path, self.di_context))
|
|
|
|
@staticmethod
|
|
def _injector(func, event: str, container: dict):
|
|
sig: inspect.Signature = inspect.signature(func)
|
|
|
|
async def wrapper(sid, data, **kwargs):
|
|
args = {}
|
|
|
|
merged = {**container, "sid": sid, "data": data, "event_name": event}
|
|
if isinstance(kwargs, dict):
|
|
merged.update(kwargs)
|
|
|
|
for name in sig.parameters:
|
|
if name in merged:
|
|
args[name] = merged[name]
|
|
|
|
return await func(**args)
|
|
|
|
return wrapper
|