package cn.iocoder.yudao.module.iot.gateway.protocol;
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import cn.hutool.core.util.StrUtil;
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import cn.iocoder.yudao.module.iot.core.messagebus.core.IotMessageBus;
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import cn.iocoder.yudao.module.iot.core.messagebus.core.IotMessageSubscriber;
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import cn.iocoder.yudao.module.iot.core.mq.message.IotDeviceMessage;
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import cn.iocoder.yudao.module.iot.core.util.IotDeviceMessageUtils;
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import lombok.AllArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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/**
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* IoT 协议下行消息订阅者抽象类
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*
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* 负责接收来自消息总线的下行消息，并委托给子类进行业务处理
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*
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* @author 芋道源码
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*/
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@AllArgsConstructor
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@Slf4j
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public abstract class AbstractIotProtocolDownstreamSubscriber implements IotMessageSubscriber<IotDeviceMessage> {
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private final IotProtocol protocol;
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private final IotMessageBus messageBus;
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@Override
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public String getTopic() {
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return IotDeviceMessageUtils.buildMessageBusGatewayDeviceMessageTopic(protocol.getServerId());
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}
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/**
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* 保证点对点消费，需要保证独立的 Group，所以使用 Topic 作为 Group
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*/
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@Override
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public String getGroup() {
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return getTopic();
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}
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@Override
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public void start() {
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messageBus.register(this);
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log.info("[start][{} 下行消息订阅成功，Topic：{}]", protocol.getType().name(), getTopic());
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}
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@Override
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public void stop() {
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messageBus.unregister(this);
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log.info("[stop][{} 下行消息订阅已停止，Topic：{}]", protocol.getType().name(), getTopic());
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}
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@Override
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public void onMessage(IotDeviceMessage message) {
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log.debug("[onMessage][接收到下行消息, messageId: {}, method: {}, deviceId: {}]",
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message.getId(), message.getMethod(), message.getDeviceId());
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try {
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// 1. 校验
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String method = message.getMethod();
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if (StrUtil.isBlank(method)) {
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log.warn("[onMessage][消息方法为空, messageId: {}, deviceId: {}]",
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message.getId(), message.getDeviceId());
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return;
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}
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// 2. 处理下行消息
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handleMessage(message);
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} catch (Exception e) {
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log.error("[onMessage][处理下行消息失败, messageId: {}, method: {}, deviceId: {}]",
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message.getId(), message.getMethod(), message.getDeviceId(), e);
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}
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}
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/**
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* 处理下行消息
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*
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* @param message 下行消息
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*/
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protected abstract void handleMessage(IotDeviceMessage message);
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}
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