public RaftEngine(RaftEngineOptions raftEngineOptions)
{
_raftEngineOptions = raftEngineOptions;
EngineStatistics = new RaftEngineStatistics(this);
Debug.Assert(raftEngineOptions.Stopwatch != null);
_log = LogManager.GetLogger(raftEngineOptions.Name + "." + GetType().FullName);
_eventLoopCancellationTokenSource = new CancellationTokenSource();
Name = raftEngineOptions.Name;
PersistentState = new PersistentState(raftEngineOptions.Name, raftEngineOptions.StorageOptions, _eventLoopCancellationTokenSource.Token)
{
CommandSerializer = new JsonCommandSerializer()
};
_currentTopology = PersistentState.GetCurrentTopology();
//warm up to make sure that the serializer don't take too long and force election timeout
PersistentState.CommandSerializer.Serialize(new NopCommand());
var thereAreOthersInTheCluster = CurrentTopology.QuorumSize > 1;
if (thereAreOthersInTheCluster == false && CurrentTopology.IsVoter(Name))
{
PersistentState.UpdateTermTo(this, PersistentState.CurrentTerm + 1);// restart means new term
SetState(RaftEngineState.Leader);
}
else
{
SetState(RaftEngineState.Follower);
}
_eventLoopTask = Task.Factory.StartNew(EventLoop, TaskCreationOptions.LongRunning);
}
public RaftEngine(RaftEngineOptions raftEngineOptions)
{
//#if DEBUG
// Console.WriteLine("Press any key to continue loading Raft -> opportunity to attach debugger");
// Console.ReadLine();
//#endif
_raftEngineOptions = raftEngineOptions;
Debug.Assert(raftEngineOptions.Stopwatch != null);
_log = LogManager.GetLogger(raftEngineOptions.Name + "." + GetType().FullName);
_eventLoopCancellationTokenSource = new CancellationTokenSource();
Name = raftEngineOptions.Name;
PersistentState = new PersistentState(raftEngineOptions.Name, raftEngineOptions.StorageOptions, _eventLoopCancellationTokenSource.Token)
{
CommandSerializer = new JsonCommandSerializer()
};
_currentTopology = PersistentState.GetCurrentTopology();
//warm up to make sure that the serializer don't take too long and force election timeout
PersistentState.CommandSerializer.Serialize(new NopCommand());
var thereAreOthersInTheCluster = CurrentTopology.QuorumSize > 1;
if (thereAreOthersInTheCluster == false && CurrentTopology.IsVoter(Name))
{
PersistentState.UpdateTermTo(this, PersistentState.CurrentTerm + 1); // restart means new term
SetState(RaftEngineState.Leader);
}
else
{
SetState(RaftEngineState.Follower);
}
_commitIndex = StateMachine.LastAppliedIndex;
_eventLoopTask = Task.Run(() => EventLoop());
}
public RaftEngine(RaftEngineOptions raftEngineOptions)
{
//#if DEBUG
// Console.WriteLine("Press any key to continue loading Raft -> opportunity to attach debugger");
// Console.ReadLine();
//#endif
_raftEngineOptions = raftEngineOptions;
Debug.Assert(raftEngineOptions.Stopwatch != null);
_log = LogManager.GetLogger(raftEngineOptions.Name + "." + GetType().FullName);
_eventLoopCancellationTokenSource = new CancellationTokenSource();
Name = raftEngineOptions.Name;
PersistentState = new PersistentState(raftEngineOptions.Name, raftEngineOptions.StorageOptions, _eventLoopCancellationTokenSource.Token)
{
CommandSerializer = new JsonCommandSerializer()
};
_currentTopology = PersistentState.GetCurrentTopology();
//warm up to make sure that the serializer don't take too long and force election timeout
PersistentState.CommandSerializer.Serialize(new NopCommand());
var thereAreOthersInTheCluster = CurrentTopology.QuorumSize > 1;
if (thereAreOthersInTheCluster == false && CurrentTopology.IsVoter(Name))
{
PersistentState.UpdateTermTo(this, PersistentState.CurrentTerm + 1);// restart means new term
SetState(RaftEngineState.Leader);
}
else
{
SetState(RaftEngineState.Follower);
}
_commitIndex = StateMachine.LastAppliedIndex;
_eventLoopTask = Task.Run(() => EventLoop());
}
private static void Main(string[] args)
{
var options = new TailFeatherCommandLineOptions();
if (Parser.Default.ParseArguments(args, options) == false)
{
var autoBuild = HelpText.AutoBuild(options);
HelpText.DefaultParsingErrorsHandler(options, autoBuild);
Console.WriteLine(autoBuild.ToString());
return;
}
var nodeName = options.NodeName ?? (Environment.MachineName + ":" + options.Port);
Console.Title = string.Format("Node name: {0}, port: {1}", nodeName, options.Port);
var kvso = StorageEnvironmentOptions.ForPath(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, options.DataPath, "KeyValue"));
using (var statemachine = new KeyValueStateMachine(kvso))
{
var storageEnvironmentOptions = StorageEnvironmentOptions.ForPath(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, options.DataPath, "Raft"));
var httpTransport = new HttpTransport(nodeName);
var raftEngineOptions = new RaftEngineOptions(
new NodeConnectionInfo
{
Name = nodeName,
Uri = new Uri("http://" + Environment.MachineName + ":" + options.Port),
},
storageEnvironmentOptions,
httpTransport,
statemachine
)
{
ElectionTimeout = 5 * 1000,
HeartbeatTimeout = 1000,
MaxLogLengthBeforeCompaction = 25
};
if (options.Boostrap)
{
PersistentState.ClusterBootstrap(raftEngineOptions);
Console.WriteLine("Setup node as the cluster seed, exiting...");
return;
}
using (var raftEngine = new RaftEngine(raftEngineOptions))
{
using (WebApp.Start(new StartOptions
{
Urls = { "http://+:" + options.Port + "/" }
}, builder =>
{
var httpConfiguration = new HttpConfiguration();
httpConfiguration.Formatters.Remove(httpConfiguration.Formatters.XmlFormatter);
httpConfiguration.Formatters.JsonFormatter.SerializerSettings.Formatting = Newtonsoft.Json.Formatting.Indented;
httpConfiguration.Formatters.JsonFormatter.SerializerSettings.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
RaftWebApiConfig.Load();
httpConfiguration.MapHttpAttributeRoutes();
httpConfiguration.Properties[typeof(HttpTransportBus)] = httpTransport.Bus;
httpConfiguration.Properties[typeof(RaftEngine)] = raftEngine;
builder.UseWebApi(httpConfiguration);
}))
{
Console.WriteLine("Ready @ http://" + Environment.MachineName + ":" + options.Port + "/, press ENTER to stop");
Console.ReadLine();
}
}
}
}
