68 lines
2.4 KiB
Python
68 lines
2.4 KiB
Python
import json
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from channels.generic.websocket import AsyncWebsocketConsumer
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from channels.db import database_sync_to_async
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from channels.exceptions import StopConsumer
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import logging
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from rest_framework.authtoken.models import Token
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logger = logging.getLogger(__name__)
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class NotificationConsumer(AsyncWebsocketConsumer):
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async def connect(self):
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"""建立WebSocket连接"""
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try:
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# 获取token
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headers = dict(self.scope['headers'])
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auth_header = headers.get(b'authorization', b'').decode()
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if not auth_header.startswith('Token '):
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await self.close()
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return
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token_key = auth_header.split(' ')[1]
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# 验证token
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self.user = await self.get_user_from_token(token_key)
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if not self.user:
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await self.close()
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return
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# 为用户创建专属房间
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self.room_name = f"notification_user_{self.user.id}"
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await self.channel_layer.group_add(
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self.room_name,
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self.channel_name
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)
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await self.accept()
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except Exception as e:
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await self.close()
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@database_sync_to_async
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def get_user_from_token(self, token_key):
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try:
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token = Token.objects.select_related('user').get(key=token_key)
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return token.user
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except Token.DoesNotExist:
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return None
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async def disconnect(self, close_code):
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"""断开WebSocket连接"""
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try:
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if hasattr(self, 'room_name'):
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await self.channel_layer.group_discard(
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self.room_name,
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self.channel_name
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)
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logger.info(f"用户 {self.user.username} 已断开连接，关闭代码: {close_code}")
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except Exception as e:
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logger.error(f"断开连接时发生错误: {str(e)}")
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async def notification(self, event):
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"""处理并发送通知消息"""
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try:
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await self.send(text_data=json.dumps(event))
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logger.info(f"已发送通知给用户 {self.user.username}")
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except Exception as e:
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logger.error(f"发送通知消息时发生错误: {str(e)}")
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