153 lines
5.2 KiB
Python
153 lines
5.2 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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WebSocket客户端模块
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用于与平台建立WebSocket连接并处理通信
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"""
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import asyncio
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import json
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import logging
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import websockets
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from datetime import datetime
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from urllib.parse import urlencode
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from config import config
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# 配置日志
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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class WebSocketClient:
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"""WebSocket客户端类"""
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def __init__(self, relay_service):
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"""
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初始化WebSocket客户端
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Args:
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relay_service: 中继器服务实例
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"""
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self.relay_service = relay_service
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self.device_id = config._config.get('relay', {}).get('device_id', '1')
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self.host = config._config.get('websocket', {}).get('host', 'localhost')
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self.port = config._config.get('websocket', {}).get('port', 8086)
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self.timeout = config._config.get('websocket', {}).get('timeout', 5)
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self.websocket = None
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self.connected = False
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self.running = False
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logger.info(f"初始化WebSocket客户端: device_id={self.device_id}, host={self.host}, port={self.port}")
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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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# 构建连接URL
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params = urlencode({'device_id': self.device_id})
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uri = f"ws://{self.host}:{self.port}/ws/device?{params}"
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logger.info(f"正在连接到平台: {uri}")
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# 建立WebSocket连接（移除了timeout参数以兼容新版本websockets库）
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self.websocket = await websockets.connect(uri)
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self.connected = True
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self.running = True
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logger.info("成功连接到平台")
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return True
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except Exception as e:
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logger.error(f"连接平台失败: {e}")
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self.connected = False
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return False
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async def disconnect(self):
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"""断开WebSocket连接"""
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logger.info("断开WebSocket连接")
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self.running = False
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if self.websocket:
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await self.websocket.close()
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self.websocket = None
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self.connected = False
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logger.info("WebSocket连接已断开")
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async def send_message(self, message):
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"""
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发送消息到平台
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Args:
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message (dict): 要发送的消息
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"""
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if not self.connected or not self.websocket:
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logger.warning("WebSocket未连接，无法发送消息")
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return False
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try:
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message_str = json.dumps(message, ensure_ascii=False)
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await self.websocket.send(message_str)
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logger.debug(f"发送消息到平台: {message_str}")
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return True
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except Exception as e:
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logger.error(f"发送消息失败: {e}")
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# 连接可能已断开，更新状态
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self.connected = False
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return False
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async def listen(self):
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"""监听平台消息"""
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if not self.connected or not self.websocket:
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logger.error("WebSocket未连接，无法监听消息")
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return
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logger.info("开始监听平台消息")
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try:
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async for message in self.websocket:
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try:
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# 解析收到的消息
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message_data = json.loads(message)
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logger.info(f"收到平台消息: {message_data}")
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# 将消息传递给中继器服务处理
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self.relay_service.handle_platform_command(message)
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except json.JSONDecodeError as e:
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logger.error(f"解析平台消息失败: {e}")
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except Exception as e:
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logger.error(f"处理平台消息时发生错误: {e}")
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except websockets.exceptions.ConnectionClosed:
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logger.warning("WebSocket连接已关闭")
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self.connected = False
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except Exception as e:
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logger.error(f"监听平台消息时发生错误: {e}")
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self.connected = False
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async def reconnect(self):
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"""尝试重新连接到平台"""
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logger.info("尝试重新连接到平台...")
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reconnect_delay = 5 # 初始重连延迟（秒）
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max_delay = 60 # 最大重连延迟（秒）
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while self.running and not self.connected:
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try:
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await self.connect()
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if self.connected:
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logger.info("重新连接成功")
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return True
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else:
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logger.warning(f"重新连接失败，{reconnect_delay}秒后重试...")
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await asyncio.sleep(reconnect_delay)
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# 指数退避，但不超过最大延迟
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reconnect_delay = min(reconnect_delay * 2, max_delay)
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except Exception as e:
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logger.error(f"重新连接时发生错误: {e}")
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await asyncio.sleep(reconnect_delay)
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def is_connected(self):
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"""检查是否已连接"""
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return self.connected |