private static async Task UseConfiguration(RaftCluster.NodeConfiguration config, string?persistentStorage)
{
config.Members.Add(new IPEndPoint(IPAddress.Loopback, 3262));
config.Members.Add(new IPEndPoint(IPAddress.Loopback, 3263));
config.Members.Add(new IPEndPoint(IPAddress.Loopback, 3264));
var loggerFactory = new LoggerFactory();
var loggerOptions = new ConsoleLoggerOptions
{
LogToStandardErrorThreshold = LogLevel.Warning
};
loggerFactory.AddProvider(new ConsoleLoggerProvider(new FakeOptionsMonitor <ConsoleLoggerOptions>(loggerOptions)));
config.LoggerFactory = loggerFactory;
using var cluster = new RaftCluster(config);
cluster.LeaderChanged += ClusterConfigurator.LeaderChanged;
var modifier = default(DataModifier?);
if (!string.IsNullOrEmpty(persistentStorage))
{
var state = new SimplePersistentState(persistentStorage);
cluster.AuditTrail = state;
modifier = new DataModifier(cluster, state);
}
await cluster.StartAsync(CancellationToken.None);
await(modifier?.StartAsync(CancellationToken.None) ?? Task.CompletedTask);
using var handler = new CancelKeyPressHandler();
Console.CancelKeyPress += handler.Handler;
await handler.WaitAsync();
Console.CancelKeyPress -= handler.Handler;
await(modifier?.StopAsync(CancellationToken.None) ?? Task.CompletedTask);
await cluster.StopAsync(CancellationToken.None);
}
// Creates and returns a configured array of raftnodes using the test cluster
static internal RaftNode[] ConfigureRaftCluster(int numberOfNodes, SM sm)
{
RaftNode[] nodes = new RaftNode[numberOfNodes];
// Create nodes
for (uint i = 0; i < numberOfNodes; i++)
{
if (sm == SM.Numeral)
{
nodes[i] = new RaftNode(i, new NumeralStateMachine());
}
else
{
nodes[i] = new RaftNode(i, new DictionaryStateMachine());
}
}
// Adding them to a cluster and configuring them
foreach (RaftNode node in nodes)
{
var c = new RaftCluster();
Array.ForEach(nodes, x => c.AddNode(new ObjectRaftConnector(x.NodeId, x)));
node.Configure(c);
}
return(nodes);
}
public ClusterService()
{
var numberOfNodes = 5;
var _nodes = new List <RaftNode>();
// Create nodes
for (uint i = 0; i < numberOfNodes; i++)
{
var node = new RaftNode(i, new NumeralStateMachine());
_nodes.Add(node);
}
// Adding them to a cluster and configuring them
foreach (RaftNode node in _nodes)
{
var c = new RaftCluster();
_nodes.ForEach(x => c.AddNode(new ObjectRaftConnector(x.NodeId, x)));
node.Configure(c);
}
this.cluster = _nodes[0].Cluster;
_nodes.ForEach(node => node.Run());
this.nodes = _nodes;
}
// Creates a single-node cluster with a numeral state machine and returns the node
static internal RaftNode CreateNode()
{
RaftNode node = new RaftNode(1, new NumeralStateMachine());
var c = new RaftCluster();
c.AddNode(new ObjectRaftConnector(node.NodeId, node));
node.Configure(c);
return(node);
}
public RaftService(IClient client) : base(client)
{
AddLearner = new RaftAddLearner(client);
AddPeer = new RaftAddPeer(client);
AddCluster = new RaftCluster(client);
Leader = new RaftLeader(client);
PromoteToPeer = new RaftPromoteToPeer(client);
RemovePeer = new RaftRemovePeer(client);
Role = new RaftRole(client);
}
private static RaftNode StartNode(Configuration conf)
{
var id = conf.CurrentNode.Id;
var node = new RaftNode(id, new RaftCore.StateMachine.Implementations.NumeralStateMachine());
var clusterConfiguration = new RaftCluster();
foreach (var anotherNode in conf.Nodes)
{
clusterConfiguration.AddNode(new APIRaftConnector(anotherNode.Id, anotherNode.BaseUrl + "/RaftApi"));
}
node.Configure(clusterConfiguration);
node.Run();
return(node);
}
/// <summary>
/// Configures the node: adds the cluster object, calculates the election timeout and sets the initial state to Follower.
/// </summary>
/// <param name="cluster"><see cref="RaftCluster"/> instance containing all the nodes in the cluster</param>
public void Configure(RaftCluster cluster)
{
this.Cluster = cluster;
this.ElectionTimeoutMS = Cluster.CalculateElectionTimeoutMS();
this.NodeState = NodeState.Follower;
}