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Use CopyTo when resetting histogram in stats iterator

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The histogram stats iterator does not fully clear the histogram object
and is not resilient to new fields being added to the histogram type.

To resolve the issue, the commit uses the CopyTo methods which should
be future proof to new fields being added.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
This commit is contained in:
Filip Petkovski 2024-07-31 11:17:09 +02:00
parent 7fab72a280
commit 3e6155e596
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GPG Key ID: 88DE577D81202846
1 changed files with 14 additions and 6 deletions
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20
promql/histogram_stats_iterator.go
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@ -62,9 +62,13 @@ func (f *histogramStatsIterator) AtHistogram(h *histogram.Histogram) (int64, *hi
return t, h
}
h.CounterResetHint = f.getResetHint(f.currentH)
h.Count = f.currentH.Count
h.Sum = f.currentH.Sum
returnValue := histogram.Histogram{
CounterResetHint: f.getResetHint(f.currentH),
Count: f.currentH.Count,
Sum: f.currentH.Sum,
}
returnValue.CopyTo(h)
f.setLastH(f.currentH)
return t, h
}
@ -89,9 +93,13 @@ func (f *histogramStatsIterator) AtFloatHistogram(fh *histogram.FloatHistogram)
return t, fh
}
fh.CounterResetHint = f.getFloatResetHint(f.currentFH.CounterResetHint)
fh.Count = f.currentFH.Count
fh.Sum = f.currentFH.Sum
returnValue := histogram.FloatHistogram{
CounterResetHint: f.getFloatResetHint(f.currentFH.CounterResetHint),
Count: f.currentFH.Count,
Sum: f.currentFH.Sum,
}
returnValue.CopyTo(fh)
f.setLastFH(f.currentFH)
return t, fh
}