async Task StartTcpListener()
{
try
{
if (server == null)
{
server = new TcpListener(IPAddress.Any, this.port); //to telnet dev.tiesky.com 27751
}
server.Start();
log.Log(new WarningLogEntry()
{
LogType = WarningLogEntry.eLogType.DEBUG,
Description = $"Started TcpNode on port {server.LocalEndpoint.ToString()}"
});
while (true)
{
var peer = await server.AcceptTcpClientAsync();//.ConfigureAwait(false);
spider.AddTcpClient(peer);
}
}
catch (Exception ex)
{
if (log != null)
{
log.Log(new WarningLogEntry()
{
Exception = ex
});
}
}
}
/// <summary>
/// If this action works, it can mean that Node can give a bid to be the candidate after specified time interval
/// Starts Election timer only in case if it's not running yet
/// </summary>
/// <param name="userToken"></param>
void LeaderHeartbeatTimeout(object userToken)
{
try
{
lock (lock_Operations)
{
if (NodeState == eNodeState.Leader) //me is the leader
{
RemoveLeaderHeartbeatWaitingTimer();
return;
}
if (DateTime.Now.Subtract(this.LeaderHeartbeatArrivalTime).TotalMilliseconds < this.entitySettings.LeaderHeartbeatMs)
{
return; //Early to elect, we receive completely heartbeat from the leader
}
VerbosePrint("Node {0} LeaderHeartbeatTimeout", NodeAddress.NodeAddressId);
RunElectionTimer();
}
}
catch (Exception ex)
{
Log.Log(new WarningLogEntry()
{
Exception = ex, Method = "Raft.RaftNode.LeaderHeartbeatTimeout"
});
}
}
/// <summary>
///
/// </summary>
/// <param name="jsonConfiguration">json representation of Raft.NodeSettings</param>
/// <param name="dbreezePath"></param>
/// <param name="port"></param>
/// <param name="log"></param>
/// <param name="OnCommit"></param>
/// <returns></returns>
public static TcpRaftNode GetFromConfig(string jsonConfiguration, string dbreezePath, int port, IWarningLog log, Func <string, ulong, byte[], bool> OnCommit)
{
try
{
TcpRaftNode rn = null;
NodeSettings ns = NodeSettings.BiserJsonDecode(jsonConfiguration);
//Biser.JsonEncoder encc = new Biser.JsonEncoder(new NodeSettings() { TcpClusterEndPoints = eps, RaftEntitiesSettings = reSettings });
//var str = encc.GetJSON(Biser.JsonSettings.JsonStringStyle.Prettify);
//NodeSettings nhz = NodeSettings.BiserJsonDecode(str);
//encc = new Biser.JsonEncoder(nhz);
//str = encc.GetJSON(Biser.JsonSettings.JsonStringStyle.Prettify);
rn = new TcpRaftNode(ns, dbreezePath, OnCommit, port, log);
return(rn);
}
catch (Exception ex)
{
if (log != null)
{
log.Log(new WarningLogEntry {
LogType = WarningLogEntry.eLogType.ERROR, Exception = ex, Method = "TcpRaftNode.GetFromConfig JSON"
});
}
}
return(null);
}
/// <summary>
///
/// </summary>
/// <param name="address">Address of the node who sent the signal</param>
/// <param name="signalType"></param>
/// <param name="data"></param>
public void HandleRaftSignal(NodeRaftAddress address, eRaftSignalType signalType, object data)
{
try
{
if (GlobalConfig.Verbose)
{
Console.WriteLine("mesage from:" + address.EndPointSID + " signal:" + signalType);
}
lock (lock_Operations)
{
switch (signalType)
{
case eRaftSignalType.LeaderHearthbeat:
ParseLeaderHeartbeat(address, data);
break;
case eRaftSignalType.CandidateRequest:
ParseCandidateRequest(address, data);
break;
case eRaftSignalType.VoteOfCandidate:
ParseVoteOfCandidate(address, data);
break;
case eRaftSignalType.StateLogEntrySuggestion:
ParseStateLogEntrySuggestion(address, data);
break;
case eRaftSignalType.StateLogEntryRequest:
ParseStateLogEntryRequest(address, data);
break;
case eRaftSignalType.StateLogEntryAccepted:
this.logHandler.ParseStateLogEntryAccepted(address, data);
break;
case eRaftSignalType.StateLogRedirectRequest: //Not a leader node tries to add command
this.logHandler.ParseStateLogRedirectRequest(address, data);
break;
}
}
}
catch (Exception ex)
{
Log.Log(new WarningLogEntry()
{
Exception = ex, Method = "Raft.RaftNode.IncomingSignalHandler"
});
}
}
void tmr_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
tmr.Stop();
tmr.Enabled = false;
if (disposed)
{
return;
}
try
{
List <ulong> ids2remove = new List <ulong>();
_sync.EnterWriteLock();
try
{
var now = DateTime.UtcNow;
double msPassed = 0;
foreach (var el in Events)
{
msPassed = (now - el.Value.ElapseAt).TotalMilliseconds;
if (msPassed > 0)
{
//if (el.Value.Name == "LEADER")
//{
// //Console.WriteLine("Elapsed: " + now.ToString("HH:mm:ss.ms"));
// Console.WriteLine("Must elapse: " + el.Value.ElapseAt);
//}
if (el.Value.RepeatOnce)
{
ids2remove.Add(el.Key);
}
else
{
el.Value.ElapseAt = now.AddMilliseconds(el.Value.Milliseconds);
//if (el.Value.Name == "LEADER")
//{
// //Console.WriteLine("Elapsed: " + now.ToString("HH:mm:ss.ms"));
// Console.WriteLine("Next elapse: " + el.Value.ElapseAt);
//}
}
Task.Run(() =>
{
el.Value.Action(el.Value.UserToken);
});
}
}
if (ids2remove.Count() > 0)
{
ids2remove.ForEach(r => Events.Remove(r));
}
this.RecalculateTimer();
}
finally
{
_sync.ExitWriteLock();
}
}
catch (Exception ex)
{
Log.Log(new WarningLogEntry()
{
Exception = ex, Method = "Raft.TimeMaster.tmr_Elapsed"
});
}
tmr.Enabled = true;
tmr.Start();
}