Method HistogramSamples

tsdb/record/record.go:530–540

HistogramSamples appends histogram samples in rec to the given slice.

(rec []byte, histograms []RefHistogramSample)

// HistogramSamples appends histogram samples in rec to the given slice.
func (d *Decoder) HistogramSamples(rec []byte, histograms []RefHistogramSample) ([]RefHistogramSample, error) {
	dec := encoding.Decbuf{B: rec}
	switch typ := Type(dec.Byte()); typ {
	case HistogramSamples, CustomBucketsHistogramSamples:
		return d.histogramSamplesV1(&dec, histograms)
	case HistogramSamplesV2:
		return d.histogramSamplesV2(&dec, histograms)
	default:
		return nil, fmt.Errorf("invalid record type %v", typ)
	}
}

// histogramSamplesV1 decodes V1 int-histogram records (BE64 baseRef/baseTime, varint deltas).
func (d *Decoder) histogramSamplesV1(dec *encoding.Decbuf, histograms []RefHistogramSample) ([]RefHistogramSample, error) {