private void LeaderElection()
{
Receive <Init>(x =>
{
Election msg = new Election(id, 0, 0);
Console.WriteLine("[Actor " + id + "] Initializing... sending: " + msg);
leftNeighbour.Tell(msg);
rightNeighbour.Tell(msg);
}
);
Receive <Election>(x => x.Id < id, x => Console.WriteLine("[Actor " + id + "] Ignoring message: " + x));
Receive <Election>(x => x.Id > id, x => HandleReceivedLargerId(x));
Receive <Election>(x => x.Id == id, x => Winner(x));
Receive <Elected>(x => HandleElected(x));
Receive <Reply>(x => x.Id != id, x => ForwardReply(x));
Receive <Reply>(x => HandleSameIdReply(x));
}
private void HandleSameIdReply(Reply x)
{
if (!gotReplyFrom.ContainsKey(Sender.Path.ToString()))
{
gotReplyFrom.Add(Sender.Path.ToString(), 0);
}
string leftNeighbourPath = leftNeighbour.Anchor.Path + leftNeighbour.Path.Select(y => y.ToString())
.Aggregate((z, y) => z + "/" + y);
string rightNeighbourPath = rightNeighbour.Anchor.Path + rightNeighbour.Path.Select(y => y.ToString())
.Aggregate((z, y) => z + "/" + y);
gotReplyFrom[Sender.Path.ToString()]++;
if (!gotReplyFrom.ContainsKey(leftNeighbourPath))
{
gotReplyFrom.Add(leftNeighbourPath, 0);
}
if (!gotReplyFrom.ContainsKey(rightNeighbourPath))
{
gotReplyFrom.Add(rightNeighbourPath, 0);
}
if (gotReplyFrom[leftNeighbourPath] > 0 && gotReplyFrom[rightNeighbourPath] > 0)
{
Console.WriteLine("[Actor " + id + "] Propagating election... New phase: " + (x.CurrentPhase + 1));
gotReplyFrom[leftNeighbourPath] = 0;
gotReplyFrom[rightNeighbourPath] = 0;
Election newMsg = new Election(x.Id, x.CurrentPhase + 1, 1);
leftNeighbour.Tell(newMsg);
rightNeighbour.Tell(newMsg);
}
}
private void ForwardElection(Election x)
{
Forward(new Election(x.Id, x.CurrentPhase, x.Hop + 1));
}
private void Winner(Election x)
{
leaderId = x.Id;
rightNeighbour.Tell(new Elected(id));
}