package cn.iocoder.yudao.module.iot.gateway.protocol.websocket.handler.downstream;
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import cn.iocoder.yudao.module.iot.core.mq.message.IotDeviceMessage;
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import cn.hutool.core.util.StrUtil;
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import cn.iocoder.yudao.module.iot.gateway.protocol.websocket.manager.IotWebSocketConnectionManager;
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import cn.iocoder.yudao.module.iot.gateway.serialize.IotMessageSerializer;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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/**
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* IoT 网关 WebSocket 下行消息处理器
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*
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* @author 芋道源码
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*/
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@Slf4j
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@RequiredArgsConstructor
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public class IotWebSocketDownstreamHandler {
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private final IotMessageSerializer serializer;
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private final IotWebSocketConnectionManager connectionManager;
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/**
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* 处理下行消息
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*/
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public void handle(IotDeviceMessage message) {
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try {
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log.info("[handle][处理下行消息,设备 ID: {},方法: {},消息 ID: {}]",
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message.getDeviceId(), message.getMethod(), message.getId());
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// 1. 获取连接信息
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IotWebSocketConnectionManager.ConnectionInfo connectionInfo = connectionManager.getConnectionInfoByDeviceId(
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message.getDeviceId());
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if (connectionInfo == null) {
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log.error("[handle][连接信息不存在,设备 ID: {}]", message.getDeviceId());
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return;
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}
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// 2. 序列化
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byte[] bytes = serializer.serialize(message);
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String bytesContent = StrUtil.utf8Str(bytes);
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// 3. 发送到设备
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boolean success = connectionManager.sendToDevice(connectionInfo.getDeviceId(), bytesContent);
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if (!success) {
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throw new RuntimeException("下行消息发送失败");
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}
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log.info("[handle][下行消息发送成功,设备 ID: {},方法: {},消息 ID: {},数据长度: {} 字节]",
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message.getDeviceId(), message.getMethod(), message.getId(), bytes.length);
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} catch (Exception e) {
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log.error("[handle][处理下行消息失败,设备 ID: {},方法: {},消息内容: {}]",
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message.getDeviceId(), message.getMethod(), message, e);
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}
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}
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}
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