relay/internal/protocol/lora/handler.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
LoRa协议处理模块
处理LoRa物理层通信相关功能
支持四级结构：平台->中继->区域主控->普通设备
"""

import logging
import time
import random
from ..base import ProtocolHandler

# 配置日志
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)


class LoRaHandler(ProtocolHandler):
    """LoRa协议处理器"""
    
    def __init__(self, config):
        """
        初始化LoRa协议处理器
        
        Args:
            config: 配置对象
        """
        super().__init__(config)
        self.initialized = False
        logger.info("初始化LoRa协议处理器")
    
    def initialize(self):
        """初始化LoRa协议处理器"""
        logger.info("开始初始化LoRa通信")
        
        # 模拟LoRa硬件初始化
        time.sleep(0.5)
        self.initialized = True
        
        # 如果启用模拟模式，初始化设备管理器
        if self.config.simulation_enabled:
            from internal.simulation import DeviceManager, AreaController, NormalDevice
            self.device_manager = DeviceManager()
            
            # 根据配置创建模拟区域主控设备
            controllers = {}
            for controller_config in self.config.simulation_controllers:
                controller = AreaController(
                    device_id=controller_config['id'],
                    lora_address=controller_config['lora_address'],
                    status=controller_config.get('status', 'stopped')
                )
                self.device_manager.add_controller(controller)
                controllers[controller.device_id] = controller
            
            # 根据配置创建模拟普通设备，并关联到区域主控
            for device_config in self.config.simulation_devices:
                device = NormalDevice(
                    device_id=device_config['id'],
                    device_type=device_config['type'],
                    rs485_bus=device_config['rs485_bus'],
                    rs485_address=device_config['rs485_address'],
                    controller_id=device_config['controller_id'],
                    status=device_config.get('status', 'stopped')
                )
                self.device_manager.add_device(device)
                
                # 将设备添加到对应的区域主控中
                controller_id = device_config['controller_id']
                if controller_id in controllers:
                    controllers[controller_id].add_device(device)
            
            logger.info(f"模拟模式已启用，创建了 {len(controllers)} 个区域主控和 {len(self.config.simulation_devices)} 个普通设备")
        else:
            logger.info("真实模式，需要连接LoRa硬件")
        
        logger.info("LoRa协议处理器初始化完成")
    
    def send_command(self, command, data):
        """
        通过LoRa发送命令到设备
        
        Args:
            command (str): 命令类型
            data (dict): 命令数据
            
        Returns:
            dict: 命令执行结果
        """
        if not self.initialized:
            logger.error("LoRa协议处理器未初始化")
            return {
                "status": "failed",
                "message": "LoRa协议处理器未初始化"
            }
        
        logger.info(f"通过LoRa发送命令: {command}, 数据: {data}")
        
        # 如果启用模拟模式，直接处理命令
        if self.config.simulation_enabled and self.device_manager:
            result = self._handle_simulated_command(command, data)
            logger.info(f"模拟命令处理结果: {result}")
            return result
        
        # 真实模式下需要实际发送命令到LoRa设备
        logger.info("真实模式下发送命令到LoRa设备")
        # 这里应该是实际的LoRa通信代码
        # 暂时返回模拟响应
        time.sleep(0.1)  # 模拟通信延迟
        return {
            "status": "success" if random.choice([True, False]) else "failed",
            "message": "命令发送成功" if random.choice([True, False]) else "命令发送失败",
            "data": {
                "device_id": data.get("device_id", "unknown"),
                "timestamp": time.time()
            }
        }
    
    def receive_response(self):
        """
        从LoRa接收设备响应
        
        Returns:
            dict: 设备响应数据
        """
        if not self.initialized:
            logger.error("LoRa协议处理器未初始化")
            return {
                "status": "failed",
                "message": "LoRa协议处理器未初始化"
            }
        
        logger.info("从LoRa接收设备响应")
        
        # 如果启用模拟模式，返回模拟响应
        if self.config.simulation_enabled and self.device_manager:
            # 在模拟模式下，我们假设命令已经直接处理完成，不需要单独接收响应
            logger.info("模拟模式下命令已直接处理完成")
            return {
                "status": "success",
                "message": "模拟响应",
                "data": {}
            }
        
        # 真实模式下需要实际从LoRa设备接收响应
        logger.info("真实模式下从LoRa设备接收响应")
        # 这里应该是实际的LoRa通信代码
        # 暂时返回模拟响应
        time.sleep(0.1)  # 模拟通信延迟
        return {
            "status": "success",
            "message": "接收响应成功",
            "data": {
                "response_data": "sample_data",
                "timestamp": time.time()
            }
        }
    
    def _handle_simulated_command(self, command, data):
        """
        处理模拟命令
        
        Args:
            command (str): 命令类型
            data (dict): 命令数据
            
        Returns:
            dict: 命令执行结果
        """
        logger.info(f"处理模拟命令: {command}")
        
        if command == "control_device":
            device_id = data.get("device_id")
            action = data.get("action")
            return self.device_manager.control_device(device_id, action)
        elif command == "query_device_status":
            device_id = data.get("device_id")
            return self.device_manager.query_device_status(device_id)
        elif command == "query_all_device_status":
            statuses = self.device_manager.query_all_device_status()
            return {
                "status": "success",
                "message": "查询所有设备状态成功",
                "data": statuses
            }
        else:
            return {
                "status": "failed",
                "message": f"不支持的命令: {command}"
            }