84 lines
3.1 KiB
Python
84 lines
3.1 KiB
Python
"""
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WebSocket consumers for flowchart evaluation updates
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"""
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import json
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import logging
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from channels.generic.websocket import AsyncWebsocketConsumer
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logger = logging.getLogger(__name__)
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class FlowchartConsumer(AsyncWebsocketConsumer):
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"""
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WebSocket consumer for real-time flowchart evaluation updates
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当用户提交流程图后，通过 WebSocket 实时接收AI评分状态更新
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"""
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async def connect(self):
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"""处理 WebSocket 连接"""
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self.user = self.scope["user"]
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# 只允许认证用户连接
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if not self.user.is_authenticated:
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await self.close()
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return
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# 使用用户 ID 作为组名，这样可以向特定用户推送消息
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self.group_name = f"flowchart_user_{self.user.id}"
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# 加入用户专属的组
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await self.channel_layer.group_add(
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self.group_name,
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self.channel_name
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)
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await self.accept()
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logger.info(f"Flowchart WebSocket connected: user_id={self.user.id}, channel={self.channel_name}")
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async def disconnect(self, close_code):
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"""处理 WebSocket 断开连接"""
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if hasattr(self, 'group_name'):
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await self.channel_layer.group_discard(
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self.group_name,
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self.channel_name
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)
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logger.info(f"Flowchart WebSocket disconnected: user_id={self.user.id}, close_code={close_code}")
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async def receive(self, text_data):
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"""
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接收客户端消息
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客户端可以发送心跳包或订阅特定流程图提交
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"""
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try:
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data = json.loads(text_data)
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message_type = data.get("type")
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if message_type == "ping":
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# 响应心跳包
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await self.send(text_data=json.dumps({
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"type": "pong",
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"timestamp": data.get("timestamp")
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}))
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elif message_type == "subscribe":
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# 订阅特定流程图提交的更新
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submission_id = data.get("submission_id")
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if submission_id:
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logger.info(f"User {self.user.id} subscribed to flowchart submission {submission_id}")
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# 可以在这里做额外的订阅逻辑
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except json.JSONDecodeError:
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logger.error(f"Invalid JSON received from user {self.user.id}")
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except Exception as e:
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logger.error(f"Error handling message from user {self.user.id}: {str(e)}")
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async def flowchart_evaluation_update(self, event):
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"""
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接收来自 channel layer 的流程图评分更新消息并发送给客户端
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这个方法名对应 push_flowchart_evaluation_update 中的 type 字段
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"""
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try:
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# 从 event 中提取数据并发送给客户端
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await self.send(text_data=json.dumps(event["data"]))
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logger.debug(f"Sent flowchart evaluation update to user {self.user.id}: {event['data']}")
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except Exception as e:
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logger.error(f"Error sending flowchart evaluation update to user {self.user.id}: {str(e)}")
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