You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.8 KiB
49 lines
1.8 KiB
from fastapi import WebSocket, WebSocketDisconnect
|
|
from typing import Dict, Set
|
|
import json
|
|
import logging
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class WebSocketManager:
|
|
def __init__(self):
|
|
self.active_connections: Dict[str, Set[WebSocket]] = {}
|
|
|
|
async def connect(self, websocket: WebSocket, user_id: str):
|
|
await websocket.accept()
|
|
if user_id not in self.active_connections:
|
|
self.active_connections[user_id] = set()
|
|
self.active_connections[user_id].add(websocket)
|
|
logger.info(f"WebSocket 用户 {user_id} 已连接")
|
|
|
|
def disconnect(self, websocket: WebSocket, user_id: str):
|
|
if user_id in self.active_connections:
|
|
self.active_connections[user_id].discard(websocket)
|
|
if not self.active_connections[user_id]:
|
|
del self.active_connections[user_id]
|
|
logger.info(f"WebSocket 用户 {user_id} 已断开")
|
|
|
|
async def send_to_user(self, user_id: str, message: dict):
|
|
if user_id not in self.active_connections:
|
|
return False
|
|
dead_connections = set()
|
|
sent_count = 0
|
|
for connection in list(self.active_connections.get(user_id, set())):
|
|
try:
|
|
await connection.send_text(json.dumps(message, ensure_ascii=False))
|
|
sent_count += 1
|
|
except Exception:
|
|
dead_connections.add(connection)
|
|
for conn in dead_connections:
|
|
self.active_connections[user_id].discard(conn)
|
|
if not self.active_connections.get(user_id):
|
|
self.active_connections.pop(user_id, None)
|
|
return sent_count > 0
|
|
|
|
async def broadcast(self, message: dict):
|
|
for user_id in list(self.active_connections.keys()):
|
|
await self.send_to_user(user_id, message)
|
|
|
|
|
|
ws_manager = WebSocketManager()
|