func newReplicaDataIterator(
d *roachpb.RangeDescriptor, e engine.Reader, replicatedOnly bool,
) *replicaDataIterator {
rangeFunc := makeAllKeyRanges
if replicatedOnly {
rangeFunc = makeReplicatedKeyRanges
}
ri := &replicaDataIterator{
ranges: rangeFunc(d),
Iterator: e.NewIterator(false),
}
ri.Seek(ri.ranges[ri.curIndex].start)
return ri
}
// ComputeStatsForRange computes the stats for a given range by
// iterating over all key ranges for the given range that should
// be accounted for in its stats.
func ComputeStatsForRange(
d *roachpb.RangeDescriptor, e engine.Reader, nowNanos int64,
) (engine.MVCCStats, error) {
iter := e.NewIterator(false)
defer iter.Close()
ms := engine.MVCCStats{}
for _, r := range makeReplicatedKeyRanges(d) {
msDelta, err := iter.ComputeStats(r.start, r.end, nowNanos)
if err != nil {
return engine.MVCCStats{}, err
}
ms.Add(msDelta)
}
return ms, nil
}