初始化代码

2021-10-26 19:20:52 +08:00
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+
+
+package util.time;
+
+import com.google.common.collect.Lists;
+import entity.OriginTimeValue;
+import entity.TargetTimeValue;
+import org.springframework.util.CollectionUtils;
+
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.util.*;
+import java.util.stream.Collectors;
+
+/**
+ * 补时间点工具类
+ * 之前在ws上班的时候，处理图标数据会遇到某些点没有数据的情况，就需要对这些时间点进行补点处理
+ *
+ * @author huangzj
+ * @date 2018-11-23 22:43:36
+ */
+public enum FillFullTimeValueUtil {
+    /**
+     * 分钟粒度
+     */
+    MINUTE {
+        @Override
+        public List<TargetTimeValue> fullFillTimeValue(LocalDateTime startDate, LocalDateTime endDate, int timeInterval,
+                                                       List<OriginTimeValue> originTimeValues, TimeZone timeZone) {
+            //Myview 向前聚合，返回前XX秒为最开始计数时间
+            Instant firstInstant = toInstant(startDate, timeZone);
+            Instant finalInstant = toInstant(endDate, timeZone);
+            //补时间点--规则一样,间隔转换成秒
+            return fullFillRule(originTimeValues, firstInstant, finalInstant, timeInterval * 60);
+        }
+    },
+    /**
+     * 小时粒度
+     */
+    HOUR {
+        @Override
+        public List<TargetTimeValue> fullFillTimeValue(LocalDateTime startDate, LocalDateTime endDate, int timeInterval,
+                                                       List<OriginTimeValue> originTimeValues, TimeZone timeZone) {
+            Instant firstInstant = toInstant(startDate, timeZone);
+            Instant finalInstant = toInstant(endDate, timeZone);
+            //补时间点--规则一样
+            return fullFillRule(originTimeValues, firstInstant, finalInstant, timeInterval * 60 * 60);
+        }
+    },
+    /**
+     * 天粒度
+     */
+    DAY {
+        @Override
+        public List<TargetTimeValue> fullFillTimeValue(LocalDateTime startDate, LocalDateTime endDate, int timeInterval,
+                                                       List<OriginTimeValue> originTimeValues, TimeZone timeZone) {
+            //区别，把时间转成天
+            Instant firstInstant = toInstant(LocalDateTime.of(startDate.toLocalDate(), LocalTime.of(0, 0, 0)), timeZone);
+            Instant finalInstant = toInstant(LocalDateTime.of(endDate.toLocalDate(), LocalTime.of(0, 0, 0)), timeZone);
+            //补时间点--规则一样
+            return fullFillRule(originTimeValues, firstInstant, finalInstant, timeInterval * 60 * 60 * 24);
+        }
+    };
+
+
+    /**
+     *  抽象方法，实现补充时间点
+     * @param startDate 开始时间 格式如：yyyy-MM-dd 00:00:00
+     * @param endDate 结束时间：格式如：yyyy-MM-dd 23:59:59
+     * @param timeInterval 数据采集粒度，单位：分钟、小时、天
+     * @param originTimeValues 缺少时间点对象（统一处理成long、long）
+     * @param timeZone 时区
+     * @return 补时间点后对象，没有补null
+     */
+    public abstract List<TargetTimeValue> fullFillTimeValue(LocalDateTime startDate, LocalDateTime endDate,
+                                                            int timeInterval, List<OriginTimeValue> originTimeValues, TimeZone timeZone);
+
+
+    /**
+     *
+     * @param dateTime 时间
+     * @param timeZone 时区
+     * @return Instant，和TimeStamp类似
+     */
+    private static Instant toInstant(LocalDateTime dateTime, TimeZone timeZone) {
+        return dateTime.atZone(timeZone.toZoneId())
+            .toInstant();
+    }
+
+
+    private static List<TargetTimeValue> fullFillRule(List<OriginTimeValue> originTimeValues, Instant firstInstant, Instant finalInstant,
+                                                      int seconds) {
+        //转换为Time-value形式的map
+        if (CollectionUtils.isEmpty(originTimeValues)) {
+            originTimeValues = Lists.newArrayList();
+        }
+        Map<Long, Long> timeValueMap = originTimeValues.stream().collect(Collectors.toMap(OriginTimeValue::getTime,
+            OriginTimeValue::getValue));
+        final List<TargetTimeValue> resultList = new ArrayList<>();
+
+        Instant cursorInstant = firstInstant;
+        //循环按照时间粒度补充时间点。
+        while (cursorInstant.isBefore(finalInstant) || cursorInstant.equals(finalInstant)) {
+            long epochSecond = cursorInstant.getEpochSecond();
+            TargetTimeValue timeValueInRule = new TargetTimeValue();
+            timeValueInRule.setValue(timeValueMap.getOrDefault(epochSecond, null));
+            timeValueInRule.setTime(epochSecond);
+            resultList.add(timeValueInRule);
+
+            //移动到下一个数据点
+            cursorInstant = cursorInstant.plusSeconds(seconds);
+        }
+        //按时间排序，最新的排在最后面
+        return resultList.parallelStream()
+            .sorted(Comparator.comparing(TargetTimeValue::getTime))
+            .collect(Collectors.toList());
+    }
+}