segment

type Segment interface {
	io.Closer
	Reading(io.ReadSeekCloser) (int, error)
	ReadEntry(*entry.Entry) (common.ErrCode, int, error)
	WriteEntry(entry.Entry) (common.ErrCode, error)
	WriteBatch(entry.Batch) (common.ErrCode, error)
	SeekToRead(int64) error
}