public void Send(JsonOperationContext context, RequestVote rv)
{
Send(context, new DynamicJsonValue
{
["Type"] = nameof(RequestVote),
[nameof(RequestVote.Term)] = rv.Term,
[nameof(RequestVote.Source)] = rv.Source,
[nameof(RequestVote.LastLogTerm)] = rv.LastLogTerm,
[nameof(RequestVote.LastLogIndex)] = rv.LastLogIndex,
[nameof(RequestVote.IsTrialElection)] = rv.IsTrialElection,
[nameof(RequestVote.IsForcedElection)] = rv.IsForcedElection
});
}
public void Send(JsonOperationContext context, RequestVote rv)
{
if (_log.IsInfoEnabled)
{
_log.Info(
$"{rv.Source} requests vote in {rv.Term}, trial: {rv.IsTrialElection}, forced: {rv.IsForcedElection}, result: {rv.ElectionResult} with: ({rv.LastLogIndex} / {rv.LastLogTerm}).");
}
Send(context, new DynamicJsonValue
{
["Type"] = nameof(RequestVote),
[nameof(RequestVote.Term)] = rv.Term,
[nameof(RequestVote.Source)] = rv.Source,
[nameof(RequestVote.LastLogTerm)] = rv.LastLogTerm,
[nameof(RequestVote.LastLogIndex)] = rv.LastLogIndex,
[nameof(RequestVote.IsTrialElection)] = rv.IsTrialElection,
[nameof(RequestVote.IsForcedElection)] = rv.IsForcedElection,
[nameof(RequestVote.ElectionResult)] = rv.ElectionResult,
[nameof(RequestVote.SendingThread)] = Thread.CurrentThread.ManagedThreadId
});
}
private HandleVoteResult ShouldGrantVote(TransactionOperationContext context, long lastIndex, RequestVote rv, long lastTerm)
{
var result = new HandleVoteResult();
var lastEntryUnderWriteLock = _engine.GetLastEntryIndex(context);
if (lastEntryUnderWriteLock != lastIndex)
{
result.DeclineVote = true;
result.DeclineReason = "Log was changed";
return(result);
}
var(whoGotMyVoteIn, votedTerm) = _engine.GetWhoGotMyVoteIn(context, rv.Term);
result.VotedTerm = votedTerm;
if (whoGotMyVoteIn != null && whoGotMyVoteIn != rv.Source)
{
result.DeclineVote = true;
result.DeclineReason = $"Already voted in {rv.LastLogTerm}, for {whoGotMyVoteIn}";
return(result);
}
if (votedTerm >= rv.Term)
{
result.DeclineVote = true;
result.DeclineReason = $"Already voted in {rv.LastLogTerm}, for another node in higher term: {votedTerm}";
return(result);
}
if (lastTerm == rv.LastLogTerm && lastIndex > rv.LastLogIndex)
{
result.DeclineVote = true;
result.DeclineReason = $"Vote declined because my log {lastIndex} is more up to date than yours {rv.LastLogIndex}";
return(result);
}
return(result);
}
