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434 lines
18 KiB
434 lines
18 KiB
"""
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WebSocket管理器模块
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统一管理WebSocket客户端和Channel，支持一个客户端3个Channel架构
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遵循单一职责原则
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"""
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import asyncio
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from typing import Dict, List, Optional, Any
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from datetime import datetime
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from app.core.websocket.client import WebSocketClient
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from app.core.websocket.channel import WebSocketChannel
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from app.core.websocket.adapter import WebSocketAdapter
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from app.utils.structured_log import get_structured_logger, LogLevel
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logger = get_structured_logger(__name__, LogLevel.INFO)
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class WebSocketManager:
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"""WebSocket管理器 - 统一管理WebSocket客户端和Channel
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单一职责：
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- 管理WebSocket客户端的生命周期
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- 管理Channel的创建和销毁
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- 管理适配器的创建和销毁
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- 提供统一的API接口
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架构设计：
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- 一个客户端只需要3个Channel：心跳、发送、接收
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- 心跳Channel：高优先级，用于心跳消息
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- 发送Channel：正常优先级，用于业务数据发送
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- 接收Channel：接收所有数据
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"""
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def __init__(self):
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self._clients: Dict[str, WebSocketClient] = {}
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self._channels: Dict[str, WebSocketChannel] = {}
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self._adapters: Dict[str, WebSocketAdapter] = {}
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self._heartbeat_tasks: Dict[str, asyncio.Task] = {} # 心跳任务
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self._created_at = datetime.now()
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self._lock = asyncio.Lock()
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logger.info("WebSocket管理器初始化完成")
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async def create_client(self, name: str, url: str, heartbeat_interval: int = 120) -> WebSocketClient:
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"""创建WebSocket客户端并自动创建3个Channel
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单一职责：只负责创建客户端和Channel，不处理业务逻辑
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"""
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async with self._lock:
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if name in self._clients:
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logger.warning(f"WebSocket客户端 {name} 已存在")
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return self._clients[name]
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try:
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# 创建客户端
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client = WebSocketClient(url, name)
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self._clients[name] = client
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# 创建3个Channel
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await self._create_client_channels(name)
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# 保存心跳间隔配置，在连接成功后启动
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client.heartbeat_interval = heartbeat_interval
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logger.info(f"WebSocket管理器创建客户端: {name} -> {url}")
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return client
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except Exception as e:
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# 如果创建过程中出现异常，清理已创建的资源
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if name in self._clients:
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del self._clients[name]
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logger.error(f"WebSocket管理器创建客户端失败: {name} - {e}")
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raise
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async def _create_client_channels(self, client_name: str):
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"""为客户端创建3个Channel
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单一职责：只负责创建Channel，不处理业务逻辑
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"""
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try:
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# 创建3个Channel
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channels = [
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(f"{client_name}_heartbeat", 100), # 心跳Channel，小队列
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(f"{client_name}_send", 1000), # 发送Channel，大队列
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(f"{client_name}_receive", 1000) # 接收Channel，大队列
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]
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for channel_name, max_size in channels:
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if channel_name not in self._channels:
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channel = WebSocketChannel(channel_name, max_size)
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self._channels[channel_name] = channel
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await channel.connect()
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logger.info(f"WebSocket管理器创建Channel: {channel_name}")
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# 创建适配器
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await self._create_client_adapters(client_name)
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except Exception as e:
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logger.error(f"WebSocket管理器创建客户端Channel失败: {client_name} - {e}")
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raise
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async def _create_client_adapters(self, client_name: str):
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"""为客户端创建适配器
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单一职责：只负责创建适配器，不处理业务逻辑
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"""
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try:
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client = self._clients[client_name]
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# 获取Channel
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heartbeat_channel = self._channels[f"{client_name}_heartbeat"]
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send_channel = self._channels[f"{client_name}_send"]
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receive_channel = self._channels[f"{client_name}_receive"]
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# 创建适配器
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adapters = [
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# 心跳适配器：心跳Channel -> WebSocket
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(f"{client_name}:heartbeat", client, heartbeat_channel, heartbeat_channel),
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# 发送适配器：发送Channel -> WebSocket
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(f"{client_name}:send", client, send_channel, receive_channel),
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# 接收适配器：WebSocket -> 接收Channel
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(f"{client_name}:receive", client, receive_channel, receive_channel)
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]
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for adapter_key, client, outbound_channel, inbound_channel in adapters:
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if adapter_key not in self._adapters:
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adapter = WebSocketAdapter(client, outbound_channel, inbound_channel)
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self._adapters[adapter_key] = adapter
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await adapter.start()
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logger.info(f"WebSocket管理器创建适配器: {adapter_key}")
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except Exception as e:
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logger.error(f"WebSocket管理器创建客户端适配器失败: {client_name} - {e}")
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raise
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async def _start_heartbeat_task(self, client_name: str, heartbeat_interval: int):
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"""启动心跳任务
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单一职责：只负责心跳任务管理，不处理业务逻辑
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"""
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try:
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# 停止已存在的心跳任务
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if client_name in self._heartbeat_tasks:
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self._heartbeat_tasks[client_name].cancel()
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# 创建新的心跳任务
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heartbeat_task = asyncio.create_task(self._heartbeat_loop(client_name, heartbeat_interval))
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self._heartbeat_tasks[client_name] = heartbeat_task
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logger.info(f"WebSocket管理器启动心跳任务: {client_name} 间隔:{heartbeat_interval}秒")
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except Exception as e:
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logger.error(f"WebSocket管理器启动心跳任务失败: {client_name} - {e}")
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raise
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async def _heartbeat_loop(self, client_name: str, heartbeat_interval: int):
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"""心跳循环
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单一职责：只负责心跳数据生成，不处理业务逻辑
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"""
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logger.info(f"心跳循环开始: {client_name} 间隔:{heartbeat_interval}秒")
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try:
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heartbeat_channel = self._channels.get(f"{client_name}_heartbeat")
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if not heartbeat_channel:
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logger.error(f"心跳Channel不存在: {client_name}_heartbeat")
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# 等待一段时间后重试，而不是直接返回
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await asyncio.sleep(5)
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return
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logger.info(f"心跳循环启动成功: {client_name} -> {heartbeat_channel.name}")
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# 修改循环条件：只要客户端存在就发送心跳，不管连接状态
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while client_name in self._clients:
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try:
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client = self._clients[client_name]
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# 创建心跳消息
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from app.core.websocket.channel import ChannelMessage
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heartbeat_data = {"Message": "ping"}
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heartbeat_message = ChannelMessage(
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type="heartbeat",
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data=heartbeat_data,
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priority=1 # 高优先级
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)
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# 发送到心跳Channel
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success = await heartbeat_channel.send_message(heartbeat_message)
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if success:
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logger.info(f"心跳消息已发送到Channel: {client_name}_heartbeat (连接状态: {client.is_connected})")
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else:
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logger.warning(f"心跳消息发送失败: {client_name}_heartbeat")
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# 等待下次心跳
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await asyncio.sleep(heartbeat_interval)
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except asyncio.CancelledError:
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logger.info(f"心跳任务被取消: {client_name}")
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break
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except Exception as e:
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logger.error(f"心跳循环异常: {client_name} - {e}")
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await asyncio.sleep(5) # 异常时等待5秒后重试
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except Exception as e:
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logger.error(f"心跳任务异常: {client_name} - {e}")
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finally:
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logger.info(f"心跳循环结束: {client_name}")
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async def remove_client(self, name: str) -> bool:
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"""移除WebSocket客户端
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单一职责：只负责移除客户端和相关资源，不处理业务逻辑
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"""
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async with self._lock:
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if name not in self._clients:
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return False
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# 停止心跳任务
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await self._stop_heartbeat_task(name)
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# 停止相关的适配器
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await self._stop_client_adapters(name)
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# 移除相关的Channel
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await self._remove_client_channels(name)
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# 移除客户端
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client = self._clients[name]
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await client.disconnect()
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del self._clients[name]
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logger.info(f"WebSocket管理器移除客户端: {name}")
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return True
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async def _stop_heartbeat_task(self, client_name: str):
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"""停止心跳任务
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单一职责：只负责停止心跳任务，不处理业务逻辑
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"""
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if client_name in self._heartbeat_tasks:
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self._heartbeat_tasks[client_name].cancel()
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del self._heartbeat_tasks[client_name]
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logger.info(f"WebSocket管理器停止心跳任务: {client_name}")
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async def _stop_client_adapters(self, client_name: str):
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"""停止指定客户端的所有适配器
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单一职责：只负责停止适配器，不处理业务逻辑
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"""
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adapters_to_remove = []
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for adapter_key, adapter in self._adapters.items():
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if adapter_key.startswith(f"{client_name}:"):
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await adapter.stop()
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adapters_to_remove.append(adapter_key)
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for adapter_key in adapters_to_remove:
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del self._adapters[adapter_key]
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async def _remove_client_channels(self, client_name: str):
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"""移除指定客户端的所有Channel
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单一职责：只负责移除Channel，不处理业务逻辑
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"""
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channels_to_remove = []
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for channel_name, channel in self._channels.items():
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if channel_name.startswith(f"{client_name}_"):
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await channel.disconnect()
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channels_to_remove.append(channel_name)
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for channel_name in channels_to_remove:
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del self._channels[channel_name]
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def get_client(self, name: str) -> Optional[WebSocketClient]:
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"""获取WebSocket客户端"""
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return self._clients.get(name)
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def get_all_clients(self) -> Dict[str, WebSocketClient]:
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"""获取所有客户端"""
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return self._clients.copy()
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async def connect_client(self, name: str) -> bool:
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"""连接指定客户端"""
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client = self.get_client(name)
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if not client:
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logger.error(f"WebSocket客户端 {name} 不存在")
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return False
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# 连接客户端
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success = await client.connect()
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# 如果连接成功，启动心跳任务
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if success and hasattr(client, 'heartbeat_interval'):
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try:
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await self._start_heartbeat_task(name, client.heartbeat_interval)
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logger.info(f"WebSocket管理器连接成功后启动心跳任务: {name}")
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except Exception as e:
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logger.error(f"心跳任务启动失败: {name} - {e}")
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return success
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async def disconnect_client(self, name: str) -> bool:
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"""断开指定客户端"""
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client = self.get_client(name)
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if not client:
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logger.error(f"WebSocket客户端 {name} 不存在")
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return False
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await client.disconnect()
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return True
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def get_channel(self, name: str) -> Optional[WebSocketChannel]:
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"""获取Channel"""
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return self._channels.get(name)
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def get_client_channels(self, client_name: str) -> Dict[str, WebSocketChannel]:
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"""获取指定客户端的所有Channel"""
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client_channels = {}
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for channel_name, channel in self._channels.items():
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if channel_name.startswith(f"{client_name}_"):
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client_channels[channel_name] = channel
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return client_channels
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def get_all_channels(self) -> Dict[str, WebSocketChannel]:
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"""获取所有Channel"""
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return self._channels.copy()
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def get_adapter(self, client_name: str, channel_type: str) -> Optional[WebSocketAdapter]:
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"""获取适配器"""
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adapter_key = f"{client_name}:{channel_type}"
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return self._adapters.get(adapter_key)
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def get_client_adapters(self, client_name: str) -> Dict[str, WebSocketAdapter]:
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"""获取指定客户端的所有适配器"""
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client_adapters = {}
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for adapter_key, adapter in self._adapters.items():
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if adapter_key.startswith(f"{client_name}:"):
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client_adapters[adapter_key] = adapter
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return client_adapters
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def get_all_adapters(self) -> Dict[str, WebSocketAdapter]:
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"""获取所有适配器"""
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return self._adapters.copy()
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async def send_message(self, client_name: str, message_type: str, data: Any, priority: int = 0) -> bool:
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"""发送消息到指定客户端
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单一职责：只负责消息路由，不处理业务逻辑
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"""
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try:
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# 根据消息类型选择Channel
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if message_type == "heartbeat":
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channel_name = f"{client_name}_heartbeat"
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else:
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channel_name = f"{client_name}_send"
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channel = self._channels.get(channel_name)
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if not channel:
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logger.error(f"Channel {channel_name} 不存在")
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return False
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# 创建消息
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from app.core.websocket.channel import ChannelMessage
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message = ChannelMessage(
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type=message_type,
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data=data,
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priority=priority
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)
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# 发送到Channel
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success = await channel.send_message(message)
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if success:
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logger.debug(f"WebSocket管理器发送消息成功: {client_name} -> {message_type}")
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else:
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logger.warning(f"WebSocket管理器发送消息失败: {client_name} -> {message_type}")
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return success
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except Exception as e:
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logger.error(f"WebSocket管理器发送消息异常: {client_name} -> {message_type} - {e}")
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return False
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async def send_heartbeat(self, client_name: str) -> bool:
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"""发送心跳消息
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单一职责：只负责心跳消息发送，不处理业务逻辑
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"""
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heartbeat_data = {"Message": "ping"}
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return await self.send_message(client_name, "heartbeat", heartbeat_data, priority=1)
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async def cleanup(self):
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"""清理所有资源
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单一职责：只负责资源清理，不处理业务逻辑
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"""
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try:
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# 停止所有心跳任务
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for client_name in list(self._heartbeat_tasks.keys()):
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await self._stop_heartbeat_task(client_name)
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# 先停止所有适配器（停止数据转发）
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for adapter in self._adapters.values():
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await adapter.stop()
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# 再断开所有客户端（清理连接和消息处理器）
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for client in self._clients.values():
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await client.disconnect()
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# 最后断开所有Channel（清理队列）
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for channel in self._channels.values():
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await channel.disconnect()
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# 清空所有集合
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self._adapters.clear()
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self._clients.clear()
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self._channels.clear()
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logger.info("WebSocket管理器清理完成")
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except Exception as e:
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logger.error(f"WebSocket管理器清理失败: {e}")
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def get_stats(self) -> Dict[str, Any]:
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"""获取管理器统计信息"""
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return {
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"created_at": self._created_at,
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"client_count": len(self._clients),
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"channel_count": len(self._channels),
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"adapter_count": len(self._adapters),
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"heartbeat_task_count": len(self._heartbeat_tasks),
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"clients": {name: client.get_stats() for name, client in self._clients.items()},
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"channels": {name: channel.get_stats() for name, channel in self._channels.items()},
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"adapters": {key: adapter.get_stats() for key, adapter in self._adapters.items()}
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}
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# 全局WebSocket管理器实例
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websocket_manager = WebSocketManager()
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