func (s *Snapshotter) save(snapshot *raftpb.Snapshot) error {
start := time.Now()
fname := fmt.Sprintf("%016x-%016x%s", snapshot.Metadata.Term, snapshot.Metadata.Index, snapSuffix)
b := pbutil.MustMarshal(snapshot)
crc := crc32.Update(0, crcTable, b)
snap := snappb.Snapshot{Crc: crc, Data: b}
d, err := snap.Marshal()
if err != nil {
return err
} else {
marshallingDurations.Observe(float64(time.Since(start).Nanoseconds() / int64(time.Microsecond)))
}
err = ioutil.WriteFile(path.Join(s.dir, fname), d, 0666)
if err == nil {
saveDurations.Observe(float64(time.Since(start).Nanoseconds() / int64(time.Microsecond)))
}
return err
}
