| | |
| | | package com.ard.work.domain.cache; |
| | | |
| | | import com.ard.work.domain.dto.signal.SignalInfo; |
| | | import com.ard.work.domain.dto.telemetry.TelemetryData; |
| | | |
| | | import java.util.concurrent.ConcurrentHashMap; |
| | | |
| | |
| | | public class UavSignalInfoCache { |
| | | |
| | | // 使用 ConcurrentHashMap 来缓存无人机信道质量数据,key 是 boxSn(无人机序列号) |
| | | private static final ConcurrentHashMap<String, SignalInfo> uavSignalInfoCache = new ConcurrentHashMap<>(); |
| | | private static final ConcurrentHashMap<String, SignalInfo> cache = new ConcurrentHashMap<>(); |
| | | |
| | | // 存储无人机信道质量数据到缓存 |
| | | public static void putUavSignalInfoCache(SignalInfo signalInfo) { |
| | | uavSignalInfoCache.put(signalInfo.getBoxSn(), signalInfo); |
| | | public static void put(SignalInfo signalInfo) { |
| | | cache.put(signalInfo.getBoxSn(), signalInfo); |
| | | } |
| | | |
| | | // 从缓存中获取信道质量数据 |
| | | public static SignalInfo getUavSignalInfo(String boxSn) { |
| | | return uavSignalInfoCache.get(boxSn); |
| | | public static SignalInfo get(String boxSn) { |
| | | return cache.get(boxSn); |
| | | } |
| | | |
| | | // 删除缓存中的信道质量数据 |
| | | public static void removeUavSignalInfo(String boxSn) { |
| | | uavSignalInfoCache.remove(boxSn); |
| | | public static void remove(String boxSn) { |
| | | cache.remove(boxSn); |
| | | } |
| | | |
| | | // 定时任务使用:判断状遥测数据是否变化,但不更新缓存 |
| | | public static boolean hasChanged(String boxSn, SignalInfo signalInfo) { |
| | | SignalInfo oldSignalInfo= cache.get(boxSn); |
| | | if (oldSignalInfo == null) { |
| | | return true; // 没有缓存,算作变化 |
| | | } |
| | | return !oldSignalInfo.equals(signalInfo); // true = 有变化 |
| | | } |
| | | } |