// called to flush all in-flight data
public void Checkpoint(string name, long position)
{
_buffer.Flush();
using (var tx = _env.Write()) {
var bufferDto = _buffer.GetState();
//Console.WriteLine("Checkpoint buffer at {0}+{1}", bufferDto.GetBufferStartPos(), bufferDto.GetBufferPos());
Lmdb.SetBuffer(tx, 0, bufferDto);
Lmdb.SetStreamPosition(tx, name, position);
Lmdb.SetCellarMeta(tx, 0, Lmdb.NewCellarDto()
.SetCellarMaxKeySize(_maxKeySize)
.SetCellarMaxValSize(_maxValSize));
tx.Commit();
}
}
void SetNewBuffer(Tx tx, long newStartPos)
{
if (_buffer != null)
{
throw new InvalidOperationException("Previous buffer wasn't cleaned up");
}
var name = string.Format("{0:0000000000}.blob", newStartPos);
var newBuffer = Lmdb
.NewBufferDto()
.SetBufferPos(0)
.SetBufferStartPos(newStartPos)
.SetBufferMaxBytes(_maxBufferBytes)
.SetBufferRecords(0)
.SetBufferFileName(name);
Lmdb.SetBuffer(tx, 0, newBuffer);
_buffer = new Buffer(newBuffer, _folder);
_buffer.OpenOrCreate();
}
