content: package com.gitee.pifeng.monitoring.ui.business.web.service.impl;
  
  import cn.hutool.core.util.NumberUtil;
  import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
  import com.gitee.pifeng.monitoring.ui.business.web.dao.IMonitorServerMemoryHistoryDao;
  import com.gitee.pifeng.monitoring.ui.business.web.entity.MonitorServerMemoryHistory;
  import com.gitee.pifeng.monitoring.ui.business.web.service.IMonitorServerMemoryHistoryService;
  import com.gitee.pifeng.monitoring.ui.business.web.vo.ServerDetailPageServerMemoryChartVo;
  import com.gitee.pifeng.monitoring.ui.core.CalculateDateTime;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  
  import java.util.Date;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * <p>
   * 服务器内存历史记录服务实现类
   * </p>
   *
   * @author 皮锋
   * @custom.date 2021-01-24
   */
  @Service
  public class MonitorServerMemoryHistoryServiceImpl extends ServiceImpl<IMonitorServerMemoryHistoryDao, MonitorServerMemoryHistory> implements IMonitorServerMemoryHistoryService {
  
      /**
       * 服务器内存历史记录数据访问对象
       */
      @Autowired
      private IMonitorServerMemoryHistoryDao monitorServerMemoryHistoryDao;
  
      /**
       * <p>
       * 获取服务器详情页面服务器内存图表信息
       * </p>
       *
       * @param ip   服务器IP地址
       * @param time 时间
       * @return 服务器详情页面服务器内存图表信息表现层对象
       * @author 皮锋
       * @custom.date 2020/10/21 12:42
       */
      @Override
      public List<ServerDetailPageServerMemoryChartVo> getServerDetailPageServerMemoryChartInfo(String ip, String time) {
          Map<String, Object> params = new HashMap<>(16);
          params.put("ip", ip);
          // 计算时间
          CalculateDateTime calculateDateTime = new CalculateDateTime(time).invoke();
          // 开始时间
          Date startTime = calculateDateTime.getStartTime();
          // 结束时间
          Date endTime = calculateDateTime.getEndTime();
          params.put("startTime", startTime);
          params.put("endTime", endTime);
          List<ServerDetailPageServerMemoryChartVo> serverDetailPageServerMemoryChartVos = this.monitorServerMemoryHistoryDao.getServerDetailPageServerMemoryChartInfo(params);
          // 除数（1024 * 1024 * 1024 = 1073741824）
          Double v2 = 1073741824D;
          for (ServerDetailPageServerMemoryChartVo serverDetailPageServerMemoryChartVo : serverDetailPageServerMemoryChartVos) {
              // 转GB
              serverDetailPageServerMemoryChartVo.setMemFree(NumberUtil.div(serverDetailPageServerMemoryChartVo.getMemFree(), v2, 2));
              // 转GB
              serverDetailPageServerMemoryChartVo.setMemTotal(NumberUtil.div(serverDetailPageServerMemoryChartVo.getMemTotal(), v2, 2));
              // 转GB
              serverDetailPageServerMemoryChartVo.setMemUsed(NumberUtil.div(serverDetailPageServerMemoryChartVo.getMemUsed(), v2, 2));
              // 乘以100后，保留两位小数
              serverDetailPageServerMemoryChartVo.setMenUsedPercent(NumberUtil.round(serverDetailPageServerMemoryChartVo.getMenUsedPercent() * 100D, 2).doubleValue());
              // 转GB
              serverDetailPageServerMemoryChartVo.setSwapFree(NumberUtil.div(serverDetailPageServerMemoryChartVo.getSwapFree(), v2, 2));
              // 转GB
              serverDetailPageServerMemoryChartVo.setSwapTotal(NumberUtil.div(serverDetailPageServerMemoryChartVo.getSwapTotal(), v2, 2));
              // 转GB
              serverDetailPageServerMemoryChartVo.setSwapUsed(NumberUtil.div(serverDetailPageServerMemoryChartVo.getSwapUsed(), v2, 2));
              // 乘以100后，保留两位小数
              serverDetailPageServerMemoryChartVo.setSwapUsedPercent(NumberUtil.round(serverDetailPageServerMemoryChartVo.getSwapUsedPercent() * 100D, 2).doubleValue());
          }
          return serverDetailPageServerMemoryChartVos;
      }
  
  }
  