public override IResponse TriggerEvent(IEvent triggeredEvent)
{
var appendEntriesEvent = triggeredEvent as AppendEntriesEvent;
if (appendEntriesEvent != null)
{
bool leaderNodeWasChanged = false;
lock (_ensureLogLock)
{
if (_consensusContext.NodeVote.LeaderNode == null ||
_consensusContext.NodeVote.LeaderNode.Id != appendEntriesEvent.LeaderNode.Id)
{
leaderNodeWasChanged = true;
}
_consensusContext.NodeVote.LeaderNode = appendEntriesEvent.LeaderNode;
}
_consensusContext.CurrentTerm = appendEntriesEvent.Term;
_consensusContext.NodeVote.VoteTerm = 0;
_lastRertievedHeartbeat = 0;
if (leaderNodeWasChanged)
{
_consensusContext.EnsureLogConsistency();
}
return(new AppendEntriesResponse(_consensusContext.CurrentTerm, true));
}
var requestVoteEvent = triggeredEvent as RequestVoteEvent;
if (requestVoteEvent != null)
{
_logger.LogInformation($"Retreived 'LeaderRequestEvent' event (currentTerm: {requestVoteEvent.Term}, node: {requestVoteEvent.Node.Id}).");
bool voteValue = OtherNodeCanBeLeader(requestVoteEvent);
if (voteValue)
{
_consensusContext.CurrentTerm = requestVoteEvent.Term;
_consensusContext.NodeVote.LeaderNode = requestVoteEvent.Node;
_consensusContext.NodeVote.VoteTerm = requestVoteEvent.Term;
_lastRertievedHeartbeat = 0;
_logger.LogInformation($"Voting for node ({requestVoteEvent.Node.Id}): GRANTED.");
}
else
{
_logger.LogInformation($"Voting for node ({requestVoteEvent.Node.Id}): NOT GRANTED.");
}
return(new RequestVoteResponse(voteValue, _consensusContext.CurrentTerm, _consensusContext.CurrentNode));
}
return(new EmptyResponse());
}
