/// <inheritdocs/>
public void WriteLeaderSnapshot(long lastIncludedIndex, long lastTerm, byte[] chunk, long offsetInFile, bool isFinal)
{
var fileName = _snapMgr.GetTempFileNameForIndexAndTerm(lastIncludedIndex, lastTerm);
Stream stream = null;
if (File.Exists(fileName))
{
var info = new FileInfo(fileName);
if (offsetInFile != info.Length)
{
throw new InvalidOperationException($"Bad position. Snapshot chunk is at {offsetInFile} but file has a size of {info.Length}.");
}
stream = new FileStream(fileName, FileMode.Open);
stream.Position = info.Length;
}
else
{
if (offsetInFile != 0)
{
throw new InvalidOperationException($"Bad position. Snapshot chunk is at {offsetInFile} but file has a size of zero.");
}
stream = new FileStream(fileName, FileMode.OpenOrCreate);
}
stream.Write(chunk, 0, chunk.Length);
stream.Close();
if (isFinal)
{
var newOffset = lastIncludedIndex + 1;
FinaliseSnapshot(lastIncludedIndex, lastTerm);
}
}
public void IsCleverInFindingLastWhenOneExistsWithOneTemp()
{
var index = 42L;
var term = 2L;
File.WriteAllText(_mgr.GetTempFileNameForIndexAndTerm(index, term), "");
Assert.Null(_mgr.GetLastSnapshot());
}