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Add comment on SampleRingIterator methods

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Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
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Filip Petkovski 2023-12-13 08:35:02 +01:00
parent bb8363dbb3
commit ea356c472e
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1 changed files with 6 additions and 0 deletions
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6
storage/buffer.go
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@ -360,14 +360,20 @@ func (it *SampleRingIterator) Next() chunkenc.ValueType {
} }
} }
// At returns the current float element of the iterator.
func (it *SampleRingIterator) At() (int64, float64) { func (it *SampleRingIterator) At() (int64, float64) {
return it.t, it.f return it.t, it.f
} }
// AtHistogram returns the current histogram element of the iterator.
func (it *SampleRingIterator) AtHistogram() (int64, *histogram.Histogram) { func (it *SampleRingIterator) AtHistogram() (int64, *histogram.Histogram) {
return it.t, it.h return it.t, it.h
} }
// AtFloatHistogram returns the current histogram element of the iterator. If the
// current sample is an integer histogram, it will be converted to a float histogram.
// An optional histogram.FloatHistogram can be provided to avoid allocating a new
// object for the conversion.
func (it *SampleRingIterator) AtFloatHistogram(fh *histogram.FloatHistogram) (int64, *histogram.FloatHistogram) { func (it *SampleRingIterator) AtFloatHistogram(fh *histogram.FloatHistogram) (int64, *histogram.FloatHistogram) {
if it.fh == nil { if it.fh == nil {
return it.t, it.h.ToFloat(fh) return it.t, it.h.ToFloat(fh)