protected Stream OpenDataFileStream(out FileStream lockFile)
{
Stream dataFile;
if (!LockUtil.TryAquireWriteLock(_directory, out lockFile))
{
var dataFileName = Path.Combine(_directory, _version + ".rdb");
dataFile = new FileStream(
dataFileName,
FileMode.CreateNew,
FileAccess.Write,
FileShare.ReadWrite,
4096
);
}
else
{
var ixFileName = LockUtil.GetFirstIndexFileNameInChronologicalOrder(_directory);
long dataFileVersion = ixFileName == null ?
_version.Version :
long.Parse(Path.GetFileNameWithoutExtension(ixFileName));
var dataFileName = Path.Combine(_directory, dataFileVersion + ".rdb");
dataFile = new FileStream(
dataFileName,
FileMode.Append,
FileAccess.Write,
FileShare.ReadWrite,
4096
);
}
return(dataFile);
}
