public ReceiveGossipThread(GossipNode gossipNode, GossipManager gossipManager) { _gossipManager = gossipManager; _gossipNode = gossipNode; try { Logger.Debug($"Gossip service successfully initialized on {_gossipNode.GossipPeer.EndPoint}"); Logger.Debug($"I am {_gossipNode.GossipPeer}"); _cluster = _gossipNode.GossipPeer.ClusterName; if (_cluster == null) { throw new ArgumentNullException("cluster was null"); } } catch (Exception ex) { Logger.Warn(ex); throw; } _keepRunning = true; TaskScheduler.UnobservedTaskException += OnUnobservedTaskException; }
public SendGossipThread(GossipNode gossipNode, GossipManager gossipManager) { _gossipNode = gossipNode; _random = new Random(); _gossipManager = gossipManager; _replyTimer = new Timer(new TimerCallback(ReplyTimerHandle)); _heartbeatTimer = new Timer(new TimerCallback(HeartbeatTimerHandle)); }
public GossipManager(GossipNode gossipNode) { _gossipNode = gossipNode; _cts = new CancellationTokenSource(); _currentStateExtension = new CurrentStateExtension(); _requests = new ConcurrentDictionary <string, BaseMessage>(); _helloTimer = new Timer(new TimerCallback(HelloTimerHandle)); _heartbeatTimer = new Timer(new TimerCallback(HeartbeatTimerHandle)); _fsm = new AsyncPassiveStateMachine <NodeState, GossipEvent>("GossipManager"); _fsm.AddExtension(new ConsoleLogExtension()); _fsm.AddExtension(_currentStateExtension); _fsm.Initialize(NodeState.Initialized); _fsm.In(NodeState.Initialized) .On(GossipEvent.HelloSend) .Goto(NodeState.HelloSent) .Execute(async() => { // set hello timer await SendHello(); }); _fsm.In(NodeState.HelloSent) .On(GossipEvent.HelloAnswer) .Goto(NodeState.Infected) .Execute <HelloResponse>((msg) => { ReceiveHelloAnswer(msg); }) .On(GossipEvent.HelloExpired) .Goto(NodeState.Initialized) .Execute(async() => { // hello timer re-set await SendHello(); }); _fsm.In(NodeState.Infected) .On(GossipEvent.HeartbeatExpired) .Goto(NodeState.Susceptible) .Execute(async() => { await SendHeartbeat(); }) .On(GossipEvent.HeartbeatAnswer) .Goto(NodeState.Infected) .Execute <HeartbeatResponse>((msg) => { IGossipPeer senderPeer = msg.Members?.FirstOrDefault(); MergeLists(senderPeer, msg.Members); }); _fsm.In(NodeState.Infected) .On(GossipEvent.HelloReceive) .Execute <HelloRequest>(async(msg) => { await SendHelloAnswer(msg); }); _fsm.In(NodeState.Susceptible) .On(GossipEvent.HelloReceive) .Execute <HelloRequest>(async(msg) => { await SendHelloAnswer(msg); }) .On(GossipEvent.HeartbeatReceive) .If <HeartbeatRequest>((msg) => { return(_gossipNode.GossipPeer.Heartbeat < msg.Peer.Heartbeat); }) .Goto(NodeState.Infected) .Execute <HeartbeatRequest>(async(msg) => { await ReceiveHeartbeat(msg); }) .On(GossipEvent.HeartbeatAnswer) .If <HeartbeatResponse>((msg) => { return(msg.Members[0].Heartbeat > _gossipNode.GossipPeer.Heartbeat); }).Goto(NodeState.Infected); _fsm.Start(); }