package cn.iocoder.yudao.module.iot.gateway.protocol.coap.handler.upstream;
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import cn.hutool.core.collection.CollUtil;
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import cn.hutool.core.lang.Assert;
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import cn.hutool.core.map.MapUtil;
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import cn.hutool.core.text.StrPool;
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import cn.hutool.extra.spring.SpringUtil;
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import cn.iocoder.yudao.framework.common.pojo.CommonResult;
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import cn.iocoder.yudao.module.iot.core.mq.message.IotDeviceMessage;
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import cn.iocoder.yudao.module.iot.gateway.service.device.message.IotDeviceMessageService;
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import lombok.extern.slf4j.Slf4j;
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import org.eclipse.californium.core.server.resources.CoapExchange;
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import java.util.List;
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/**
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* IoT 网关 CoAP 协议的【上行】处理器
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*
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* 处理设备通过 CoAP 协议发送的上行消息，包括：
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* 1. 属性上报：POST /topic/sys/{productKey}/{deviceName}/thing/property/post
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* 2. 事件上报：POST /topic/sys/{productKey}/{deviceName}/thing/event/post
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*
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* Token 通过自定义 CoAP Option 2088 携带
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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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public class IotCoapUpstreamHandler extends IotCoapAbstractHandler {
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private final String serverId;
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private final IotDeviceMessageService deviceMessageService;
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public IotCoapUpstreamHandler(String serverId) {
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this.serverId = serverId;
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this.deviceMessageService = SpringUtil.getBean(IotDeviceMessageService.class);
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}
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@Override
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@SuppressWarnings("DuplicatedCode")
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protected CommonResult<Object> handle0(CoapExchange exchange) {
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// 1.1 解析通用参数
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List<String> uriPath = exchange.getRequestOptions().getUriPath();
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String productKey = getProductKey(uriPath);
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String deviceName = getDeviceName(uriPath);
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String method = String.join(StrPool.DOT, uriPath.subList(4, uriPath.size()));
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// 1.2 解析消息
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IotDeviceMessage message = deserializeRequest(exchange, IotDeviceMessage.class);
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Assert.notNull(message, "请求参数不能为空");
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Assert.equals(method, message.getMethod(), "method 不匹配");
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// 2. 发送消息
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deviceMessageService.sendDeviceMessage(message, productKey, deviceName, serverId);
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// 3. 返回结果
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return CommonResult.success(MapUtil.of("messageId", message.getId()));
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}
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@Override
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protected boolean requiresAuthentication() {
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return true;
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}
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@Override
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protected String getProductKey(List<String> uriPath) {
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// 路径格式：/topic/sys/{productKey}/{deviceName}/...
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return CollUtil.get(uriPath, 2);
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}
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@Override
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protected String getDeviceName(List<String> uriPath) {
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// 路径格式：/topic/sys/{productKey}/{deviceName}/...
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return CollUtil.get(uriPath, 3);
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}
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}
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