private void WriteTable(IClickHouseTableWriter table)
{
var writer = _client._writer;
writer.Write7BitInt32((int)ClientMessageCode.Data);
writer.WriteString(table.TableName);
var compression = _client._settings.Compress ? CompressionAlgorithm.Lz4 : CompressionAlgorithm.None;
writer.BeginCompress(compression, _client._settings.CompressionBlockSize);
writer.WriteByte(BlockFieldCodes.IsOverflows);
writer.WriteBool(false); // is overflow
writer.WriteByte(BlockFieldCodes.BucketNum);
writer.WriteInt32(-1); // data size in block. -1 for null
writer.WriteByte(BlockFieldCodes.End);
writer.Write7BitInt32(table.Columns.Count);
writer.Write7BitInt32(table.RowCount);
foreach (var column in table.Columns)
{
writer.WriteString(column.ColumnName);
writer.WriteString(column.ColumnType);
int rowCount = table.RowCount;
while (rowCount > 0)
{
var size = writer.WriteRaw(mem => column.WriteNext(mem.Span));
rowCount -= size.Elements;
}
}
writer.EndCompress();
}
public async ValueTask SendTable(IClickHouseTableWriter table, bool async, CancellationToken cancellationToken)
{
CheckDisposed();
try
{
WriteTable(table);
}
catch (Exception ex)
{
_client._writer.Discard();
throw ClickHouseHandledException.Wrap(ex);
}
await WithCancellationToken(cancellationToken, ct => _client._writer.Flush(async, ct));
}
