예제 #1
0
func (s *memorySeriesStorage) preloadChunksForRange(
	fp model.Fingerprint,
	from model.Time, through model.Time,
	stalenessDelta time.Duration,
) ([]*chunkDesc, error) {
	s.fpLocker.Lock(fp)
	defer s.fpLocker.Unlock(fp)

	series, ok := s.fpToSeries.get(fp)
	if !ok {
		has, first, last, err := s.persistence.hasArchivedMetric(fp)
		if err != nil {
			return nil, err
		}
		if !has {
			s.invalidPreloadRequestsCount.Inc()
			return nil, nil
		}
		if from.Add(-stalenessDelta).Before(last) && through.Add(stalenessDelta).After(first) {
			metric, err := s.persistence.archivedMetric(fp)
			if err != nil {
				return nil, err
			}
			series = s.getOrCreateSeries(fp, metric)
		} else {
			return nil, nil
		}
	}
	return series.preloadChunksForRange(from, through, fp, s)
}
예제 #2
0
// PreloadInstant implements Preloader
func (p *memorySeriesPreloader) PreloadInstant(
	fp model.Fingerprint,
	timestamp model.Time, stalenessDelta time.Duration,
) SeriesIterator {
	cds, iter := p.storage.preloadChunksForInstant(fp, timestamp.Add(-stalenessDelta), timestamp)
	p.pinnedChunkDescs = append(p.pinnedChunkDescs, cds...)
	return iter
}