private FileTimeSlice CreateSlice <TEntry, T>(string symbol, string column, long startTicks, long endTicks)
where TEntry : unmanaged, IFieldEntry <T>
{
var slice = new FileTimeSlice {
Start = new DateTime(startTicks), End = new DateTime(endTicks)
};
var fs = new MinotaurFileStream(new[] { GetFileOffset(symbol, column, slice.Start, 0) });
var cs = new ColumnStream <TEntry>(fs, new VoidCodec <TEntry>());
var blocks = cs.ReadBlockInfos();
slice.Blocks = blocks.Sample <TEntry, T>(OPTIMAL_FILE_BLOCK_SLICE);
cs.Dispose();
fs.Dispose();
return(slice);
}
public void ReadWriteWorkflowTest()
{
var ms = new MinotaurMemoryStream();
const int bufferSize = 1024;
var wrapSize = sizeof(PayloadHeader) + sizeof(byte) * 2 + sizeof(byte);
var bufferSizeWithoutWrapSize = bufferSize - wrapSize;
const int fullBufferSize = bufferSize * 5 + 512;
var writeBuffer = new UnsafeBuffer(fullBufferSize);
var readBuffer = new UnsafeBuffer(fullBufferSize);
writeBuffer.SetAll(2);
readBuffer.SetAll(0);
var stream = new ColumnStream <byte>(ms, new VoidCodec <byte>(), bufferSize);
// 1. Test write less than buffer
var write = 100;
var wrote = stream.Write(writeBuffer.Ptr, write);
wrote.Check(write);
ms.Position.Check(0);
stream.Flush();
ms.Position.Check(write + wrapSize);
ReadWf(stream, readBuffer, 2, write);
// 2. Test write more than buffer
writeBuffer.SetAll(2);
stream.Reset();
ms.SetLength(0);
write = bufferSize * 4 + 512;
wrote = stream.Write(writeBuffer.Ptr, write);
wrote.Check(write);
ms.Position.Check((bufferSize + wrapSize) * 4);
stream.Flush();
ms.Position.Check(write + 5 * wrapSize);
ReadWf(stream, readBuffer, 2, write);
// 2. Test write exactly buffer size
writeBuffer.SetAllUntil(bufferSizeWithoutWrapSize, 2);
stream.Reset();
ms.SetLength(0);
write = bufferSize;
wrote = stream.Write(writeBuffer.Ptr, write);
wrote.Check(write);
ms.Position.Check(bufferSize + wrapSize);
stream.Flush();
ms.Position.Check(bufferSize + wrapSize);
stream.Reset();
ReadWf(stream, readBuffer, 2, write);
stream.Dispose();
writeBuffer.Dispose();
readBuffer.Dispose();
}