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add interval splitting for bar charts

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This commit is contained in:
Andreas Huber
2020-04-05 08:14:09 +02:00
parent 75391f21ff
commit 50f555d23c
19 changed files with 600 additions and 80 deletions
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55
pdb-utils/src/main/java/org/lucares/utils/LongToDateBucket.java
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@@ -4,6 +4,7 @@ import java.time.Instant;
import java.time.OffsetDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.List;
import java.util.Map.Entry;
@@ -54,12 +55,15 @@ public class LongToDateBucket {
*/
private final DateTimeFormatter datePattern;
ChronoUnit chronoUnit;
// visible for test
final ConcurrentNavigableMap<Long, DatePrefixAndRange> datePrefixCache = new ConcurrentSkipListMap<>();
private final AtomicReference<DatePrefixAndRange> lastAccessed = new AtomicReference<>(null);
public LongToDateBucket(final String dateFormatPattern) {
public LongToDateBucket(final String dateFormatPattern, final ChronoUnit chronoUnit) {
this.chronoUnit = chronoUnit;
this.datePattern = DateTimeFormatter.ofPattern(dateFormatPattern);
}
@@ -104,40 +108,43 @@ public class LongToDateBucket {
return result;
}
public String toDateIndexPrefix(final long epochMilli) {
final Entry<Long, DatePrefixAndRange> value = datePrefixCache.floorEntry(epochMilli);
String result;
if (value == null || !value.getValue().contains(epochMilli)) {
final DatePrefixAndRange newValue = toDatePrefixAndRange(epochMilli);
datePrefixCache.put(newValue.getMinEpochMilli(), newValue);
result = newValue.getDatePrefix();
} else {
result = value.getValue().getDatePrefix();
}
return result;
}
// public String toDateIndexPrefix(final long epochMilli) {
//
// final Entry<Long, DatePrefixAndRange> value = datePrefixCache.floorEntry(epochMilli);
//
// String result;
// if (value == null || !value.getValue().contains(epochMilli)) {
// final DatePrefixAndRange newValue = toDatePrefixAndRange(epochMilli);
// datePrefixCache.put(newValue.getMinEpochMilli(), newValue);
// result = newValue.getDatePrefix();
// } else {
// result = value.getValue().getDatePrefix();
// }
//
// return result;
// }
/**
* only for tests, use toPartitionIds(final DateTimeRange dateRange,final
* Collection<? extends PartitionId> availablePartitionIds) instead
*
* @param chronoUnit
*
* @param dateRange
* @return
*/
public List<String> toPartitionIds(final OffsetDateTime start, final OffsetDateTime end) {
public List<String> toPartitionIds(final OffsetDateTime start, final OffsetDateTime end,
final ChronoUnit chronoUnit) {
final List<String> result = new ArrayList<>();
OffsetDateTime current = start;
current = current.withOffsetSameInstant(ZoneOffset.UTC).withDayOfMonth(1).withHour(0).withMinute(0)
.withSecond(0).withNano(0);
current = current.with(new StartOfInterval(chronoUnit));
while (!current.isAfter(end)) {
final String id = toDateIndexPrefix(current);
result.add(id);
current = current.plusMonths(1);
current = current.with(new BeginningOfNextInterval(chronoUnit));
}
return result;
@@ -145,12 +152,12 @@ public class LongToDateBucket {
private DatePrefixAndRange toDatePrefixAndRange(final long epochMilli) {
final OffsetDateTime date = Instant.ofEpochMilli(epochMilli).atOffset(ZoneOffset.UTC);
final OffsetDateTime beginOfMonth = date.withDayOfMonth(1).withHour(0).withMinute(0).withSecond(0).withNano(0);
final OffsetDateTime endOfMonth = beginOfMonth.plusMonths(1).minusNanos(1);
final OffsetDateTime begin = date.with(new StartOfInterval(chronoUnit));
final OffsetDateTime end = begin.with(new EndOfInterval(chronoUnit));
final String datePrefix = date.format(datePattern);
final long minEpochMilli = beginOfMonth.toInstant().toEpochMilli();
final long maxEpochMilli = endOfMonth.toInstant().toEpochMilli();
final long minEpochMilli = begin.toInstant().toEpochMilli();
final long maxEpochMilli = end.toInstant().toEpochMilli();
return new DatePrefixAndRange(datePrefix, minEpochMilli, maxEpochMilli);
}