// handleCellValue returns a Row if the cell value includes a commit, otherwise nil.
func (cr *chunkReader) handleCellValue(cc *btspb.ReadRowsResponse_CellChunk) Row {
if cc.ValueSize > 0 {
// ValueSize is specified so expect a split value of ValueSize bytes
if cr.curVal == nil {
cr.curVal = make([]byte, 0, cc.ValueSize)
}
cr.curVal = append(cr.curVal, cc.Value...)
cr.state = cellInProgress
} else {
// This cell is either the complete value or the last chunk of a split
if cr.curVal == nil {
cr.curVal = cc.Value
} else {
cr.curVal = append(cr.curVal, cc.Value...)
}
cr.finishCell()
if cc.GetCommitRow() {
return cr.commitRow()
} else {
cr.state = rowInProgress
}
}
return nil
}
// Validate a RowStatus, commit or reset, if present.
func (cr *chunkReader) validateRowStatus(cc *btspb.ReadRowsResponse_CellChunk) error {
// Resets can't be specified with any other part of a cell
if cc.GetResetRow() && (cr.isAnyKeyPresent(cc) ||
cc.Value != nil ||
cc.ValueSize != 0 ||
cc.Labels != nil) {
return fmt.Errorf("reset must not be specified with other fields %v", cc)
}
if cc.GetCommitRow() && cc.ValueSize > 0 {
return fmt.Errorf("commit row found in between chunks in a cell")
}
return nil
}