public void FindsMajorityPerfectly(int[] matchIndices, long majority)
{
var s = new VolatileLeaderState();
foreach (var i in matchIndices)
{
s.SetMatchIndex(Guid.NewGuid(), i);
}
Assert.Equal(majority, s.GetMajorityMatchIndex());
}
internal void UpdateCommitIndex()
{
/*
* If there exists an N such that N > commitIndex, a majority
* of matchIndex[i] ≥ N, and log[N].term == currentTerm:
* set commitIndex = N(§5.3, §5.4).
*/
var majorityIndex = _volatileLeaderState.GetMajorityMatchIndex();
var index = _volatileState.CommitIndex + 1; // next
while (index <= _logPersister.LastIndex && index <= majorityIndex && _logPersister.GetEntries(index, 1).First().Term == State.CurrentTerm)
{
index++;
}
_volatileState.CommitIndex = index - 1;
}