public void LeaderElection()
{
Console.WriteLine(ElectionTime);
while (true)
{
if (State == NodeState.Leader)
{
Console.Write($"\rI AM LEADER - {DateTime.Now.ToString()}");
// new System.Threading.ManualResetEvent(false).WaitOne(50);
UDPServer.SendSignal(ServerActions.KeepFollower, FileConnector.GetAllMessagesAsText());
UDPServer.SendSignal(ServerActions.GetLeader, Helper.ServerIP, Helper.ServerPort);
// continue;
}
new System.Threading.ManualResetEvent(false).WaitOne(ElectionTime);
switch (State)
{
case NodeState.Follower:
if (!Node.KeepFollower)
{
Console.Write($"\rI WANT TO BE LEADER {DateTime.Now.ToString()}");
UDPServer.SendSignal(ServerActions.VoteForLeader);
VoteCount++;
State = NodeState.Leader;
continue;
}
// Console.Write($"\rIM Follower {DateTime.Now.ToString()}");
break;
case NodeState.Candidate:
break;
case NodeState.Leader:
break;
}
KeepFollower = false;
}
// while(true)
// {
// if(Node.Nodes.Count != 0)
// {
//
// if(Node.Ping)
// {
// foreach(var node in Node.Nodes)
// {
// UDPServer.SendElection();
// Console.WriteLine("IM LEADER");
// }
// }
// }
// Node.Ping = true;
// }
}
public void ListenUDP()
{
while (true)
{
IPEndPoint RemoteIpEndPoint = new IPEndPoint(
IPAddress.Any,
Helper.UdpPort
);
Byte[] receiveBytes = udpServer.Receive(ref RemoteIpEndPoint);
string returnData = Encoding.ASCII.GetString(receiveBytes);
JObject data = new JObject();
data = JObject.Parse(returnData);
// Console.WriteLine(data);
Enum.TryParse(data["action"].ToString(), out ServerActions action);
switch (action)
{
case ServerActions.Ping:
Node.KeepFollower = true;
break;
case ServerActions.GetClients:
var clients = data["clients"];
lock (Node.Nodes)
{
foreach (var client in clients)
{
if (Node.Nodes.FirstOrDefault(x => x.IP == client["IP"].ToString() && x.Port == int.Parse(client["Port"].ToString())) == null)
{
Node.Nodes.Add(
new NodeModel()
{
IP = client["IP"].ToString(),
Port = int.Parse(client["Port"].ToString())
}
);
}
}
Node.Nodes.RemoveAll(x => x.IP == Helper.GetLocalIPAddress() && x.Port == ((IPEndPoint)udpServer.Client.LocalEndPoint).Port);
}
break;
case ServerActions.Election:
Console.WriteLine("ping");
Node.KeepFollower = true;
break;
case ServerActions.VoteForLeader:
lock (Node.KeepFollower)
{
if (Node.State == NodeState.Follower)
{
Node.KeepFollower = true;
SendSignal(ServerActions.Vote, RemoteIpEndPoint.Address.ToString(), RemoteIpEndPoint.Port);
}
}
break;
case ServerActions.Vote:
Console.WriteLine("I VOTE FOR LEADER");
Node.VoteCount++;
break;
case ServerActions.KeepFollower:
Console.Write($"\rI GOT HEARTBEAT FROM LEADER {DateTime.Now.ToString()}");
Node.KeepFollower = true;
Node.State = NodeState.Follower;
var dataFromLeader = data["data"].ToString();
if (dataFromLeader != string.Empty)
{
// JObject deserializedData = new JObject();
// deserializedData = JObject.Parse(dataFromLeader);
// var currentDataFromFile = FileConnector.GetAllMessagesAsText();
FileConnector.ClearFile();
fileConnector.WriteDataToSource(dataFromLeader);
// if (deserializedData["id"].ToString() != FileConnector.LastID)
// {
// FileConnector.LastID = deserializedData["id"].ToString();
// fileConnector.WriteDataToSource('\n'+dataFromLeader+'\n');
// }
}
break;
case ServerActions.GetFromLeader:
var output = new FileConnector().GetDataFromSource();
SendData(output, Helper.ServerIP, Helper.ServerPort);
break;
case ServerActions.SendToLeader:
var dataToWrite = data["data"].ToString();
JObject deserializedDataFromLeader = new JObject();
deserializedDataFromLeader = JObject.Parse(dataToWrite);
var currentData = FileConnector.GetAllMessagesAsText();
FileConnector.ClearFile();
new FileConnector().WriteDataToSource(currentData + deserializedDataFromLeader.ToString());
// FileConnector.LastID = deserializedDataFromLeader["id"].ToString();
// new FileConnector().WriteDataToSource('\n' + dataToWrite.ToString() + '\n');
break;
case ServerActions.GetDataFromLeader:
SendDataToClient(FileConnector.GetAllMessagesAsText(), data["data"]["address"]["Ip"].ToString()
, int.Parse(data["data"]["address"]["Port"].ToString()));
break;
}
}
}
