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@@ -0,0 +1,36 @@
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+package com.zksy.telemetry.utils;/*
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+package com.zksy.gasTransmitter.utils;
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+
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+import org.slf4j.Logger;
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+import org.slf4j.LoggerFactory;
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+import org.springframework.beans.factory.annotation.Autowired;
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+import org.springframework.scheduling.annotation.Scheduled;
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+import org.springframework.stereotype.Component;
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+
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+import java.util.Date;
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+import java.util.HashMap;
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+import java.util.Map;
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+
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+@Component
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+public class DeviceOfflineCheckTask {
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+ private static final Logger logger = LoggerFactory.getLogger(DeviceOfflineCheckTask.class);
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+
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+ // 用于存储设备编号及其最后一次接收数据的时间
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+ public static ConcurrentHashMap<String, Date> deviceLastReceiveTimeMap = new ConcurrentHashMap<>();
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+ @Autowired
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+ private BaseDevicesService baseDevicesService;
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+
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+ // 定时检查设备是否离线
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+ @Scheduled(fixedRate = 24 * 60 * 60 * 1000) // 每24小时执行一次
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+ public void checkDeviceOffline() {
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+ Date now = new Date();
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+ for (Map.Entry<String, Date> entry : deviceLastReceiveTimeMap.entrySet()) {
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+ long diff = now.getTime() - entry.getValue().getTime();
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+ // 如果设备在 23 小时内没有接收数据,则认为设备离线
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+ if (diff > 23 * 60 * 60 * 1000) {
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+ baseDevicesService.getByDeviceNumberStatus(entry.getKey(), 1, 0);
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+ logger.info("设备 {} 已离线", entry.getKey());
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+ }
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+ }
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+ }
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+}*/
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