static void Scenario1(string[] args)
{
Console.WriteLine("Scenario 1 is running");
if (args.Length < 1)
{
Console.WriteLine("RaftCluster TCP listening port is not specified");
return;
}
if (args.Length < 2 || !(new System.IO.FileInfo(args[2])).Exists)
{
Console.WriteLine("Path to configuration file is not supplied or file is not found");
return;
}
string dbreezePath = "";
if (args.Length >= 3)
{
dbreezePath = args[3];
}
Console.WriteLine($"Listening port: {args[1]}; Path to config: {args[2]}; Path to DBreeze folder: {args[3]}");
var configLines = System.IO.File.ReadAllLines(args[2]);
TcpRaftNode rn = null;
//rn = TcpRaftNode.GetFromConfig(1, System.IO.File.ReadAllText(args[2]),
// dbreezePath, Convert.ToInt32(args[1]), log,
// (entName, index, data) => { Console.WriteLine($"wow committed {entName}/{index}"); return true; });
rn = TcpRaftNode.GetFromConfig(System.IO.File.ReadAllText(args[2]),
dbreezePath, Convert.ToInt32(args[1]), log,
(entName, index, data) => { Console.WriteLine($"wow committed {entName}/{index}"); return(true); });
rn.Start();
AddLogEntryResult addRes = null;
while (true)
{
var cmd = Console.ReadLine();
switch (cmd)
{
case "set1":
addRes = rn.AddLogEntry(new byte[] { 23 });
Console.WriteLine($"Adding: {addRes.AddResult.ToString()}");
break;
case "set1a":
addRes = rn.AddLogEntry(new byte[] { 27 }, entityName: "inMemory1");
Console.WriteLine($"Adding: {addRes.AddResult.ToString()}");
break;
case "set10":
for (int k = 0; k < 10; k++)
{
addRes = rn.AddLogEntry(new byte[] { 23 });
Console.WriteLine($"Adding: {addRes.AddResult.ToString()}");
}
break;
case "set10a":
for (int k = 0; k < 10; k++)
{
addRes = rn.AddLogEntry(new byte[] { 23 }, entityName: "inMemory1");
Console.WriteLine($"Adding: {addRes.AddResult.ToString()}");
}
break;
}
}
}
/// <summary>
/// Leader and followers via redirect. (later callback info for followers is needed)
/// </summary>
/// <param name="data"></param>
/// <param name="logEntryExternalId"></param>
/// <returns></returns>
public AddLogEntryResult ProcessAddLogRequest(byte[] iData, byte[] externalId = null)
{
AddLogEntryResult res = new AddLogEntryResult();
try
{
lock (this.stateMachine.lock_Operations)
{
if (iData != null)
{
this.rediretQueue.Enqueue(new Tuple <byte[], byte[]>(iData, externalId));
}
if (this.stateMachine.States.NodeState == eNodeState.Leader)
{
this.stateMachine.timerLoop.StopNoLeaderAddCommandTimeLoop();
while (this.rediretQueue.Count > 0)
{
var nlc = this.rediretQueue.Dequeue();
this.AddStateLogEntryForDistribution(nlc.Item1, nlc.Item2);
EnqueueAndDistrbuteLog();
}
res.LeaderAddress = this.stateMachine.NodeAddress;
res.AddResult = AddLogEntryResult.eAddLogEntryResult.LOG_ENTRY_IS_CACHED;
}
else
{
if (this.stateMachine.LeaderNodeAddress == null)
{
res.AddResult = AddLogEntryResult.eAddLogEntryResult.NO_LEADER_YET;
this.stateMachine.timerLoop.EnterNoLeaderAddCommandTimeLoop();
}
else
{
this.stateMachine.timerLoop.StopNoLeaderAddCommandTimeLoop();
res.AddResult = AddLogEntryResult.eAddLogEntryResult.NODE_NOT_A_LEADER;
res.LeaderAddress = this.stateMachine.LeaderNodeAddress;
//Redirecting only in case if there is a leader
while (this.rediretQueue.Count > 0)
{
var nlc = this.rediretQueue.Dequeue();
this.stateMachine.network.SendTo(this.stateMachine.LeaderNodeAddress, eRaftSignalType.StateLogRedirectRequest,
(
new StateLogEntryRedirectRequest
{
Data = nlc.Item1,
ExternalID = nlc.Item2
}
), this.stateMachine.NodeAddress, this.stateMachine.entitySettings.EntityName);
}
}
}
}
}
catch (Exception ex)
{
this.stateMachine.Log.Log(new WarningLogEntry()
{
Exception = ex, Method = "Raft.RaftNode.AddLogEntryLeader"
});
res.AddResult = AddLogEntryResult.eAddLogEntryResult.ERROR_OCCURED;
}
return(res);
}
