fix: 设备离线bug修复：设备通过保活时间离线后，无法切换为在线状态的bug

iot-module/iot-rule-engine/src/main/java/cc/iotkit/ruleengine/handler/sys/DeviceStateCheckHandler.java

@@ -0,0 +1,51 @@
+/*
+ * +----------------------------------------------------------------------
+ * | Copyright (c) 奇特物联 2021-2022 All rights reserved.
+ * +----------------------------------------------------------------------
+ * | Licensed 未经许可不能去掉「奇特物联」相关版权
+ * +----------------------------------------------------------------------
+ * | Author: xw2sy@163.com
+ * +----------------------------------------------------------------------
+ */
+package cc.iotkit.ruleengine.handler.sys;
+
+import cc.iotkit.common.thing.ThingModelMessage;
+import cc.iotkit.data.manager.IDeviceInfoData;
+import cc.iotkit.model.device.DeviceInfo;
+import cc.iotkit.ruleengine.handler.DeviceMessageHandler;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Component;
+
+import javax.transaction.Transactional;
+
+/**
+ * 设备状态检查
+ */
+@Slf4j
+@Component
+public class DeviceStateCheckHandler implements DeviceMessageHandler {
+
+    @Autowired
+    @Qualifier("deviceInfoDataCache")
+    private IDeviceInfoData deviceInfoData;
+
+
+    @Override
+    @Transactional
+    public void handle(ThingModelMessage msg) {
+        // 物模型->设备deviceName
+        String deviceName = msg.getDeviceName();
+
+        DeviceInfo realTimeDevice = deviceInfoData.findByDeviceName(deviceName);
+        if ( !realTimeDevice.getState().isOnline() ) {
+            // 切换状态，设备上线
+            DeviceInfo.State state = realTimeDevice.getState();
+            state.setOnline(true);
+            state.setOnlineTime(System.currentTimeMillis());
+            deviceInfoData.save(realTimeDevice);
+        }
+    }
+
+}