private void ListenerWork()
{
while (true)
{
_threadRunning = true;
_listenerCancelled = false;
AsyncIO.ForceDotNet.Force();
using (var server = new PairSocket())
{
server.Bind("tcp://*:" + port);
while (!_listenerCancelled)
{
Connected = _contactWatch.ElapsedMilliseconds < ContactThreshold;
byte[] frameBytes;
if (!server.TryReceiveFrameBytes(out frameBytes))
{
continue;
}
_contactWatch.Restart();
if (OnBytes != null && frameBytes != null)
{
OnBytes.Invoke(frameBytes);
}
}
server.Close();
}
NetMQConfig.Cleanup();
_threadRunning = false;
}
}
private void OnMessage(Message msg, PairSocket socket)
{
Console.WriteLine("> Recebido via OnMessage");
var op = msg.ReadNext <uint>();
if (op == ADD)
{
storedvalues.Add(msg.ReadNext <string>());
}
else if (op == GET)
{
msg.Append(PRINT);
foreach (var item in storedvalues)
{
msg.Append(item);
}
socket.Send(msg);
}
else
{
Console.WriteLine(msg.ToString()); //Show all package frames as String
}
}
private void Run(PairSocket shim)
{
using (m_publisherSocket = new XPublisherSocket(m_address))
{
m_publisherSocket.SetWelcomeMessage(WelcomeMessage);
m_publisherSocket.ReceiveReady += DropPublisherSubscriptions;
m_heartbeatTimer = new NetMQTimer(HeartbeatInterval);
m_heartbeatTimer.Elapsed += OnHeartbeatTimerElapsed;
shim.ReceiveReady += OnShimMessage;
// signal the actor that the shim is ready to work
shim.SignalOK();
m_poller = new NetMQPoller {
m_publisherSocket, shim
};
m_poller.Add(m_heartbeatTimer);
// Polling until poller is cancelled
m_poller.Run();
}
}
public void Run(PairSocket shim)
{
m_pipe = shim;
shim.SignalOK();
m_pipe.ReceiveReady += OnPipeReady;
m_pingTimer = new NetMQTimer(interval: TimeSpan.Zero);
m_pingTimer.Elapsed += PingElapsed;
m_pingTimer.Enable = false;
using (m_poller = new NetMQPoller {
m_pipe, m_pingTimer
})
{
m_poller.Run();
}
// the beacon might never been configured
#if NET35
m_udpSocket?.Close();
#else
m_udpSocket?.Dispose();
#endif
}
private void Run(PairSocket shim)
{
_shim = shim;
using (_publisherSocket = new XPublisherSocket())
{
_publisherSocket.SetWelcomeMessage(WelcomeMessage);
_publisherSocket.Bind(_address);
_publisherSocket.ReceiveReady += DropPublisherSubscriptions;
_heartbeatTimer = new NetMQTimer(_heartbeatInterval);
_heartbeatTimer.Elapsed += OnHeartbeatTimerElapsed;
if (_receiveTimeout > 0)
{
_receiveTimeoutTimer = new NetMQTimer(1000);
_receiveTimeoutTimer.Enable = false;
_receiveTimeoutTimer.Elapsed += OnReceiveTimeout;;
}
shim.ReceiveReady += OnShimMessage;
// signal the actor that the shim is ready to work
shim.SignalOK();
_poller = new NetMQPoller {
_publisherSocket, shim, _heartbeatTimer, _receiveTimeoutTimer
};
// Polling until poller is cancelled
_poller.Run();
}
}
public void RespondToPing()
{
// Setup
var serverSocket = new PairSocket();
serverSocket.Bind("inproc://stream-test");
var pingMessage = new PingRequest().Wrap(MessageType.PingRequest);
var stream = new Stream("inproc://stream-test");
stream.Connect();
// Run test case
var task1 = Task.Run(() => serverSocket.SendFrame(pingMessage.ToByteString().ToByteArray()));
var task2 = Task.Run(() =>
{
var message = new Message();
message.MergeFrom(serverSocket.ReceiveFrameBytes());
return(message);
});
Task.WhenAll(new[] { task1, task2 });
var actualMessage = task2.Result;
// Verify
Assert.Equal(MessageType.PingResponse, actualMessage.MessageType);
Assert.Equal(pingMessage.CorrelationId, actualMessage.CorrelationId);
serverSocket.Unbind("inproc://stream-test");
stream.Disconnect();
}
/// <summary>
/// Create new NetMQQueue.
/// </summary>
/// <param name="context">NetMQContext must be provided to the queue</param>
/// <param name="capacity">The capacity of the queue, use zero for unlimited</param>
public NetMQQueue(NetMQContext context, int capacity = 0)
{
m_context = context;
m_queue = new ConcurrentQueue <T>();
m_writer = m_context.CreatePairSocket();
m_reader = m_context.CreatePairSocket();
if (capacity != 0)
{
m_writer.Options.SendHighWatermark = m_reader.Options.ReceiveHighWatermark = capacity / 2;
}
else
{
m_writer.Options.SendHighWatermark = m_reader.Options.ReceiveHighWatermark = 0;
}
m_eventDelegator = new EventDelegator <NetMQQueueEventArgs <T> >(() =>
{
m_reader.ReceiveReady += OnReceiveReady;
}, () =>
{
m_reader.ReceiveReady -= OnReceiveReady;
});
string address = string.Format("inproc://NetMQQueue#{0}", Interlocked.Increment(ref s_sequence));
m_reader.Bind(address);
m_writer.Connect(address);
m_dequeueMsg = new Msg();
m_dequeueMsg.InitEmpty();
}
private void RunActor(PairSocket shim)
{
_shim = shim;
using (_subscriber = new SubscriberSocket())
using (_publisher = new PublisherSocket())
{
using (_beacon = new NetMQBeacon())
{
_shim.ReceiveReady += OnShimReady;
_subscriber.Subscribe(string.Empty);
_port = _subscriber.BindRandomPort("tcp://*");
_logger?.LogInformation($"{_id}: Peer bus is bound to {{BusPort}}", _port);
_subscriber.ReceiveReady += OnSubscriberReady;
_logger?.LogInformation($"{_id}: Peer is broadcasting UDP on port {{BeaconPort}}", _beaconPort);
_beacon.Configure(_beaconPort);
_beacon.Publish(_port.ToString(), _beaconInterval);
_beacon.Subscribe(string.Empty);
_beacon.ReceiveReady += OnBeaconReady;
var cleanupTimer = new NetMQTimer(_cleanupInterval);
cleanupTimer.Elapsed += Cleanup;
_poll = new NetMQPoller {
_shim, _subscriber, _beacon, cleanupTimer
};
_shim.SignalOK();
_poll.Run();
}
}
}
private void Run(PairSocket shim)
{
m_shim = shim;
shim.ReceiveReady += OnShimMessage;
m_timeoutTimer = new NetMQTimer(TimeOut);
m_timeoutTimer.Elapsed += OnTimeoutTimer;
m_reconnectTimer = new NetMQTimer(ReconnectTimer);
m_reconnectTimer.Elapsed += OnReconnectTimer;
m_poller = new Poller(shim);
m_poller.AddTimer(m_timeoutTimer);
m_poller.AddTimer(m_reconnectTimer);
shim.SignalOK();
Connect();
m_poller.PollTillCancelled();
if (m_subscriber != null)
{
m_subscriber.Dispose();
}
}
public void Run(PairSocket shim)
{
shim.SignalOK();
while (true)
{
try
{
NetMQMessage msg = shim.ReceiveMultipartMessage();
string command = msg[0].ConvertToString();
if (command == NetMQActor.EndShimMessage)
{
break;
}
//Simulate a failure that should be sent back to Actor
throw new InvalidOperationException("Actors Shim threw an Exception");
}
//You WILL need to decide what Exceptions should be caught here, this is for
//demonstration purposes only, any unhandled fault will bubble up to caller's code
catch (InvalidOperationException e)
{
shim.Send(string.Format("Error: Exception occurred {0}", e.Message));
}
}
}
public void RunPipeline(PairSocket shim)
{
publisherSocket = context.CreatePublisherSocket();
publisherSocket.Bind("tcp://*:" + StreamingProtocol.Port);
snapshotSocket = context.CreateResponseSocket();
snapshotSocket.Bind("tcp://*:" + SnapshotProtocol.Port);
snapshotSocket.ReceiveReady += OnSnapshotReady;
shim.ReceiveReady += OnShimReady;
heartbeatTimer = new NetMQTimer(StreamingProtocol.HeartbeatInterval);
heartbeatTimer.Elapsed += OnHeartbeatTimerElapsed;
shim.SignalOK();
poller = new Poller();
poller.AddSocket(shim);
poller.AddSocket(snapshotSocket);
poller.AddTimer(heartbeatTimer);
poller.Start();
publisherSocket.Dispose();
snapshotSocket.Dispose();
}
public override bool HandleMessage(PairSocket me, PairSocket remote, Envelope envelop)
{
var msg = envelop.GetMessage();
if (me.IdentityConnectionSocketsMap.ContainsKey(remote))
{
//Evita de várias conexões fake no servidor
remote.Close();
}
byte[] identifier;
if (msg.Length >= 16)
{
identifier = msg.ReadNext(16);
remote.ConnectionId = new Guid(identifier);
}
else
{
remote.ConnectionId = Guid.NewGuid();
identifier = remote.ConnectionId.ToByteArray();
}
me.IdentitySocketsMap[identifier] = remote;
SendResultCode(remote, identifier);
return(true);
}
public async Task CanGetState()
{
var serverAddress = "inproc://get-state-test";
var serverSocket = new PairSocket();
serverSocket.Bind(serverAddress);
var processor = new TransactionProcessor(serverAddress);
processor.Start();
var context = new TransactionContext(processor, "context");
var addresses = new[] { "address1", "address2" };
var task = Task.Run(() =>
{
var message = new Message();
message.MergeFrom(serverSocket.ReceiveFrameBytes());
Assert.Equal(MessageType.TpStateGetRequest, message.MessageType);
var response = new TpStateGetResponse();
response.Entries.AddRange(addresses.Select(x => new TpStateEntry {
Address = x, Data = ByteString.Empty
}));
serverSocket.SendFrame(response.Wrap(message, MessageType.TpStateGetResponse).ToByteArray());
});
var stateResponse = await context.GetStateAsync(addresses);
Assert.Equal(addresses.Length, stateResponse.Count());
}
/// <summary>
/// Create a Zyre API that communicates with a node on the ZRE bus.
/// </summary>
/// <param name="name">The name of the node</param>
/// <param name="useEvents">Set this to true to disable Receive() and instead subscribe to events for getting messages from peers. Default is true.</param>
/// <param name="loggerDelegate">An action to take for logging when _verbose is true. Default is null.</param>
public Zyre(string name, bool useEvents = true, Action <string> loggerDelegate = null)
{
_useEvents = useEvents;
// Create front-to-back pipe pair for data traffic
// outbox is passed to ZyreNode for sending Zyre message traffic back to _inbox
PairSocket outbox;
PairSocket.CreateSocketPair(out outbox, out _inbox);
// Start node engine and wait for it to be ready
// All node control is done through _actor
_actor = ZyreNode.Create(outbox, loggerDelegate);
if (useEvents)
{
_inboxPoller = new NetMQPoller();
_inbox.ReceiveReady += InboxReceiveReady;
_inboxPoller.RunAsync();
}
// Send name, if any, to node ending
if (!string.IsNullOrEmpty(name))
{
_actor.SendMoreFrame("SET NAME").SendFrame(name);
}
}
private void ConnectionWork()
{
AsyncIO.ForceDotNet.Force();
using (var pairSocket = new PairSocket()) {
pairSocket.Options.ReceiveHighWatermark = 1000;
if (_createConnection)
{
pairSocket.Bind("tcp://*:12345");
}
else
{
pairSocket.Connect("tcp://localhost:12345");
}
//Do one more loop in-case we send out a closing msg and then cancel the connection
bool flushedBuffer = true;
while (!_connectionCancelled || !flushedBuffer)
{
string frameString;
while (pairSocket.TryReceiveFrameString(out frameString))
{
_incomingMessageQueue.Enqueue(frameString);
}
while (_outgoingMessageQueue.TryDequeue(out frameString))
{
pairSocket.SendFrame(frameString);
}
flushedBuffer = _connectionCancelled;
}
pairSocket.Close();
}
NetMQConfig.Cleanup();
}
public override bool HandleMessage(PairSocket me, PairSocket remote, Envelope envelop)
{
me.ConnectionId = envelop.ReadNext <Guid>();
me.idAwaiter.Set();
return(true);
}
void SocketThreadLoop()
{
while (true)
{
threadRunning = true;
senderCancelled = false;
AsyncIO.ForceDotNet.Force();
using (var sock = new PairSocket())
{
sock.Connect("tcp://" + ip + ":" + port);
while (!senderCancelled)
{
if (!framePending)
{
continue;
}
sock.SendFrame(msgBuffer);
framesSent++;
framePending = false;
}
sock.Close();
}
NetMQConfig.Cleanup();
threadRunning = false;
}
}
internal void RemoveSubscriber(PairSocket subscriber, bool forced)
{
lock (this)
{
if (subscriber.ConnectionId != null)
{
if (!IdentifierSubscriber.ContainsKey(subscriber.ConnectionId))
{
return;
}
var subConfig = IdentifierSubscriber[subscriber.ConnectionId];
subConfig.PairSocket = null;
if (subConfig.LostType == PubSubQueueLostType.Persistent)
{
if (forced)
{
IdentifierSubscriber.Remove(subscriber.ConnectionId);
persistentCount--;
}
}
else
{
IdentifierSubscriber.Remove(subscriber.ConnectionId);
}
}
}
}
public void Run(PairSocket shim)
{
shim.SignalOK();
shim.ReceiveReady += OnShimReady;
m_messagesPipe = new PairSocket();
m_messagesPipe.Connect(string.Format("inproc://wsrouter-{0}", m_id));
m_messagesPipe.ReceiveReady += OnMessagePipeReady;
m_stream = new StreamSocket();
m_stream.ReceiveReady += OnStreamReady;
m_poller = new NetMQPoller();
m_poller.Add(m_messagesPipe);
m_poller.Add(shim);
m_poller.Add(m_stream);
m_messagesPipe.SignalOK();
m_poller.Run();
m_messagesPipe.Dispose();
m_stream.Dispose();
}
public void RunPipeline(PairSocket shim)
{
while (true)
{
try
{
NetMQMessage msg = shim.ReceiveMessage();
string command = msg[0].ConvertToString();
if (command == ActorKnownMessages.END_PIPE)
{
break;
}
//Simulate a failure that should be sent back to Actor
//Simulate a failure that should be sent back to Actor
//Simulate a failure that should be sent back to Actor
//Simulate a failure that should be sent back to Actor
throw new InvalidOperationException("Actors Shim threw an Exception");
}
//You WILL need to decide what Exceptions should be caught here, this is for
//demonstration purposes only, any unhandled falut will bubble up to callers code
catch (InvalidOperationException e)
{
shim.Send(string.Format("Error: Exception occurred {0}", e.Message));
}
}
//broken out of work loop, so should dispose shim socket now
shim.Dispose();
}
public override bool HandleMessage(PairSocket me, PairSocket remote, Envelope envelop)
{
var queueName = envelop.ReadNext <string>();
PubSubQueue queue;
lock (me.Queue)
{
if (!me.Queue.ContainsKey(queueName))
{
queue = new PubSubQueue();
queue.Name = queueName;
me.Queue[queueName] = queue;
}
else
{
queue = me.Queue[queueName];
}
}
var lastWillEnvelop = new Envelope(envelop.GetMessage());
lastWillEnvelop.Append(PublishDeliveredProtocol.Command);
lastWillEnvelop.Append(queue);
lastWillEnvelop.Append((byte)PubSubQueueLostType.None);
remote.LastWill = lastWillEnvelop;
return(true);
}
public void BindAndConnect()
{
using (PairSocket bind = new PairSocket())
{
bind.Bind("inproc://test");
Assert.That(!bind.HasOut);
using (PairSocket connect = new PairSocket())
{
connect.Connect("inproc://test");
Assert.That(connect.HasOut);
Assert.That(bind.HasOut);
Assert.That(!bind.HasIn);
Assert.That(connect.TrySendFrame("Hello"));
Assert.That(bind.HasIn);
string message;
Assert.That(bind.TryReceiveFrameString(out message));
Assert.That(message == "Hello");
}
}
}
private static void Node0(string url)
{
using (var s = new PairSocket())
{
s.Bind(url);
SendReceive(s);
}
}
public void Bind()
{
using (PairSocket bind = new PairSocket())
{
bind.TcpBind("localhost", 45000);
Thread.Sleep(5000);
}
}
public override bool HandleMessage(PairSocket me, PairSocket remote, Envelope envelop)
{
var msgId = envelop.ReadNext <uint>();
me.OnMessage?.Invoke(envelop.GetMessage(), remote, null);
return(true);
}
private static void Node1(string url)
{
using (var s = new PairSocket())
{
s.Connect(url);
SendReceive(s);
}
}
private void OnDisconnected(PairSocket socket)
{
bool connected = false;
while (!connected)
{
connected = socket.TryReconnect();
}
}
private void RunActor(PairSocket shim)
{
// save the shim to the class to use later
m_shim = shim;
// create all subscriber, publisher and beacon
using (m_subscriber = new SubscriberSocket())
using (m_publisher = new PublisherSocket())
using (m_beacon = new NetMQBeacon())
{
// listen to actor commands
m_shim.ReceiveReady += OnShimReady;
// subscribe to all messages
m_subscriber.Subscribe("");
// we bind to a random port, we will later publish this port
// using the beacon
m_randomPort = m_subscriber.BindRandomPort("tcp://*");
Console.WriteLine("Bus subscriber is bound to {0}", m_subscriber.Options.LastEndpoint);
// listen to incoming messages from other publishers, forward them to the shim
m_subscriber.ReceiveReady += OnSubscriberReady;
// configure the beacon to listen on the broadcast port
Console.WriteLine("Beacon is being configured to UDP port {0}", m_broadcastPort);
m_beacon.Configure(m_broadcastPort);
// publishing the random port to all other nodes
Console.WriteLine("Beacon is publishing the Bus subscriber port {0}", m_randomPort);
m_beacon.Publish(m_randomPort.ToString(), TimeSpan.FromSeconds(1));
// Subscribe to all beacon on the port
Console.WriteLine("Beacon is subscribing to all beacons on UDP port {0}", m_broadcastPort);
m_beacon.Subscribe("");
// listen to incoming beacons
m_beacon.ReceiveReady += OnBeaconReady;
// Create a timer to clear dead nodes
NetMQTimer timer = new NetMQTimer(TimeSpan.FromSeconds(1));
timer.Elapsed += ClearDeadNodes;
// Create and configure the poller with all sockets and the timer
m_poller = new NetMQPoller {
m_shim, m_subscriber, m_beacon, timer
};
// signal the actor that we finished with configuration and
// ready to work
m_shim.SignalOK();
// polling until cancelled
m_poller.Run();
}
}
public void Run(PairSocket shim)
{
this.shim = shim;
shim.ReceiveReady += OnShimReady;
shim.SignalOK();
poller = new NetMQPoller {
shim
};
poller.Run();
}
private NetMQActor(PairSocket self, PairSocket shim, IShimHandler shimHandler)
{
m_shimHandler = shimHandler;
m_self = self;
m_shim = shim;
EventHandler <NetMQSocketEventArgs> onReceive = (sender, e) =>
m_receiveEvent.Fire(this, new NetMQActorEventArgs(this));
EventHandler <NetMQSocketEventArgs> onSend = (sender, e) =>
m_sendEvent.Fire(this, new NetMQActorEventArgs(this));
m_receiveEvent = new EventDelegator <NetMQActorEventArgs>(
() => m_self.ReceiveReady += onReceive,
() => m_self.ReceiveReady -= onReceive);
m_sendEvent = new EventDelegator <NetMQActorEventArgs>(
() => m_self.SendReady += onSend,
() => m_self.SendReady -= onSend);
var random = new Random();
// Bind and connect pipe ends
string actorName;
string endPoint;
while (true)
{
try
{
actorName = string.Format("NetMQActor-{0}-{1}", random.Next(0, 10000), random.Next(0, 10000));
endPoint = string.Format("inproc://{0}", actorName);
m_self.Bind(endPoint);
break;
}
catch (AddressAlreadyInUseException)
{
// Loop around and try another random address
}
}
m_shim.Connect(endPoint);
m_shimThread = new Thread(RunShim)
{
Name = actorName
};
m_shimThread.Start();
// Mandatory handshake for new actor so that constructor returns only
// when actor has also initialised. This eliminates timing issues at
// application start up.
m_self.ReceiveSignal();
}
internal void HandleMessage(PairSocket me, PairSocket remote, Envelope envelope)
{
envelope.Move(0);
var code = envelope.ReadNext <int>();
if (SupportedProtocol.ContainsKey(code))
{
SupportedProtocol[code].HandleMessage(me, remote, envelope);
}
}
public StopSignaler()
{
PairSocket.CreateSocketPair(out m_writer, out m_reader);
m_reader.ReceiveReady += delegate
{
m_reader.SkipFrame();
IsStopRequested = true;
};
IsStopRequested = false;
}
private void Run(PairSocket shim)
{
shim.ReceiveReady += OnShimReady;
m_receiveSocket.ReceiveReady += OnSocketReady;
m_poller = new NetMQPoller { m_receiveSocket, shim };
shim.SignalOK();
m_poller.Run();
m_receiveSocket.ReceiveReady -= OnSocketReady;
}
void IShimHandler.Run(PairSocket pipe)
{
_pipe = pipe;
_pipe.SignalOK();
_pipe.ReceiveReady += OnPipeReady;
_zre = Zre.Create(_ctx, _name);
_zre.ReceiveReady += OnZreReady;
_poller = new Poller();
_poller.AddSocket(_zre);
_poller.AddSocket(_pipe);
_poller.PollTillCancelled();
}
void IShimHandler.Run(PairSocket shim)
{
_pipe = shim;
_pipe.SignalOK();
_pipe.ReceiveReady += OnPipeReady;
_timer = new NetMQTimer(TimeSpan.FromSeconds(1));
_timer.Elapsed += OnPingPeer;
_inbox = _context.CreateRouterSocket();
_inbox.ReceiveReady += OnInboxReady;
_poller = new Poller(_pipe);
_poller.AddTimer(_timer);
_poller.PollTillCancelled();
}
public void Run(PairSocket shim, object[] args, CancellationToken token)
{
if (args == null || args.Count() != 1)
throw new InvalidOperationException(
"Args were not correct, expected one argument");
AccountAction accountAction = JsonConvert.DeserializeObject<AccountAction>(args[0].ToString());
while (!token.IsCancellationRequested)
{
//Message for this actor/shim handler is expected to be
//Frame[0] : Command
//Frame[1] : Payload
//
//Result back to actor is a simple echoing of the Payload, where
//the payload is prefixed with "AMEND ACCOUNT"
NetMQMessage msg = null;
//this may throw NetMQException if we have disposed of the actor
//end of the pipe, and the CancellationToken.IsCancellationRequested
//did not get picked up this loop cycle
msg = shim.ReceiveMessage();
if (msg == null)
break;
if (msg[0].ConvertToString() == "AMEND ACCOUNT")
{
string json = msg[1].ConvertToString();
Account account = JsonConvert.DeserializeObject<Account>(json);
AmmendAccount(accountAction, account);
shim.Send(JsonConvert.SerializeObject(account));
}
else
{
throw NetMQException.Create("Unexpected command",
ErrorCode.EFAULT);
}
}
}
public Actor(NetMQContext context, IShimHandler shimHandler, object[] args)
{
this.self = context.CreatePairSocket();
this.shim = new Shim(shimHandler, context.CreatePairSocket());
this.self.Options.SendHighWatermark = 1000;
this.self.Options.SendHighWatermark = 1000;
//now binding and connect pipe ends
string endPoint = string.Empty;
while (true)
{
Action bindAction = () =>
{
endPoint = GetEndPointName();
self.Bind(endPoint);
};
try
{
bindAction();
break;
}
catch (NetMQException nex)
{
if (nex.ErrorCode == ErrorCode.EFAULT)
{
bindAction();
}
}
}
shim.Pipe.Connect(endPoint);
//Create Shim thread handler
CreateShimThread(args);
}
public void Run(PairSocket shim, object[] args, CancellationToken token)
{
if (args == null || args.Count() != 1 || (string)args[0] != "Hello World")
throw new InvalidOperationException(
"Args were not correct, expected 'Hello World'");
while (!token.IsCancellationRequested)
{
//Message for this actor/shim handler is expected to be
//Frame[0] : Command
//Frame[1] : Payload
//
//Result back to actor is a simple echoing of the Payload, where
//the payload is prefixed with "ECHO BACK "
NetMQMessage msg = null;
//this may throw NetMQException if we have disposed of the actor
//end of the pipe, and the CancellationToken.IsCancellationRequested
//did not get picked up this loop cycle
msg = shim.ReceiveMessage();
if (msg == null)
break;
if (msg[0].ConvertToString() == "ECHO")
{
shim.Send(string.Format("ECHO BACK : {0}",
msg[1].ConvertToString()));
}
else
{
throw NetMQException.Create("Unexpected command",
ErrorCode.EFAULT);
}
}
}
private void Run(PairSocket shim)
{
using (m_publisherSocket = m_context.CreateXPublisherSocket())
{
m_publisherSocket.SetWelcomeMessage(WelcomeMessage);
m_publisherSocket.Bind(m_address);
m_publisherSocket.ReceiveReady += DropPublisherSubscriptions;
m_heartbeatTimer = new NetMQTimer(HeartbeatInterval);
m_heartbeatTimer.Elapsed += OnHeartbeatTimerElapsed;
shim.ReceiveReady += OnShimMessage;
// signal the actor that the shim is ready to work
shim.SignalOK();
m_poller = new Poller(m_publisherSocket, shim);
m_poller.AddTimer(m_heartbeatTimer);
// Polling until poller is cancelled
m_poller.PollTillCancelled();
}
}
/// <summary>
/// <para>is the main thread of the broker</para>
/// <para>it spawns threads handling titanic operations</para>
/// <para>it receives GUID from Titanic Request Service and dispatches the requests
/// to available workers via MDPBroker</para>
/// <para>it also manages the appropriate changes in the file system as well as in queue</para>
/// </summary>
/// <param name="requestWorker">mdp worker processing the incoming requests for services</param>
/// <param name="replyWorker">mdp worker processing incoming reply requests</param>
/// <param name="closeWorker">mdp worker processing incoming close requests</param>
/// <param name="serviceCallClient">mdp client forwarding requests to service providing mdp worker
/// via mdp broker and collecting replies</param>
/// <exception cref="TerminatingException">The socket has been stopped.</exception>
/// <exception cref="AddressAlreadyInUseException">The specified address is already in use.</exception>
/// <exception cref="NetMQException">No IO thread was found, or the protocol's listener encountered an
/// error during initialization.</exception>
/// <exception cref="ObjectDisposedException">thrown if the socket was already disposed</exception>
public void Run( IMDPWorker requestWorker = null,
IMDPWorker replyWorker = null,
IMDPWorker closeWorker = null,
IMDPClient serviceCallClient = null)
{
using (var pipeStart = new PairSocket ())
using (var pipeEnd = new PairSocket ())
using (var cts = new CancellationTokenSource ())
{
// set up the inter thread communication pipe
pipeStart.Bind (_titanic_internal_communication);
pipeEnd.Connect (_titanic_internal_communication);
// start the three child tasks
var requestTask = Task.Run (() => ProcessTitanicRequest (pipeEnd, requestWorker), cts.Token);
var replyTask = Task.Run (() => ProcessTitanicReply (replyWorker), cts.Token);
var closeTask = Task.Run (() => ProcessTitanicClose (closeWorker), cts.Token);
var tasks = new[] { requestTask, replyTask, closeTask };
while (true)
{
// wait for 1s for a new request from 'Request' to process
var input = pipeStart.Poll (PollEvents.PollIn, TimeSpan.FromMilliseconds (1000));
// any message available? -> process it
if ((input & PollEvents.PollIn) == PollEvents.PollIn)
{
// only one frame will be send [Guid]
var msg = pipeStart.ReceiveFrameString ();
Guid guid;
if (!Guid.TryParse (msg, out guid))
Log ("[TITANIC BROKER] Received a malformed GUID via pipe - throw it away");
else
{
Log (string.Format ("[TITANIC BROKER] Received request GUID {0} via pipe", msg));
// now we have a valid GUID - save it to disk for further use
m_io.SaveNewRequestEntry (guid);
}
}
//! now dispatch (brute force) the requests -> SHOULD BE MORE INTELLIGENT (!)
// dispatching will also worry about the handling of a potential reply
// dispatch only requests which have not been closed
foreach (var entry in m_io.GetNotClosedRequestEntries ().Where (entry => entry != default (RequestEntry)))
{
if (DispatchRequests (entry.RequestId, serviceCallClient))
m_io.SaveProcessedRequestEntry (entry);
}
//! should implement some sort of restart
// beware of the silently dieing threads - must be detected!
if (DidAnyTaskStopp (tasks))
{
// stopp all threads
cts.Cancel ();
// stop processing!
break;
}
}
}
}
public void Run(PairSocket shim)
{
m_pipe = shim;
shim.SignalOK();
m_pipe.ReceiveReady += OnPipeReady;
m_pingTimer = new NetMQTimer(interval: TimeSpan.Zero);
m_pingTimer.Elapsed += PingElapsed;
m_pingTimer.Enable = false;
using (m_poller = new NetMQPoller { m_pipe, m_pingTimer })
{
m_poller.Run();
}
// the beacon might never been configured
#if NET35
m_udpSocket?.Close();
#else
m_udpSocket?.Dispose();
#endif
}
public void Run(PairSocket shim)
{
m_pipe = shim;
shim.SignalOK();
m_pipe.ReceiveReady += OnPipeReady;
m_pingTimer = new NetMQTimer(0);
m_pingTimer.Elapsed += PingElapsed;
m_pingTimer.Enable = false;
m_poller = new Poller();
m_poller.AddSocket(m_pipe);
m_poller.AddTimer(m_pingTimer);
m_poller.PollTillCancelled();
// the beacon might never been configured
if (m_udpSocket != null)
{
m_udpSocket.Close();
}
}
private void Run(PairSocket shim)
{
m_shim = shim;
shim.ReceiveReady += OnShimMessage;
m_timeoutTimer = new NetMQTimer(TimeOut);
m_timeoutTimer.Elapsed += OnTimeoutTimer;
m_reconnectTimer = new NetMQTimer(ReconnectTimer);
m_reconnectTimer.Elapsed += OnReconnectTimer;
m_poller = new Poller(shim);
m_poller.AddTimer(m_timeoutTimer);
m_poller.AddTimer(m_reconnectTimer);
shim.SignalOK();
Connect();
m_poller.PollTillCancelled();
if (m_subscriber != null)
m_subscriber.Dispose();
}
/// <summary>
/// process a titanic request according to TITANIC Protocol
///
/// <para>it connects via provided PAIR socket to main thread</para>
/// <para>write request to disk and return the GUID to client</para>
/// sends the GUID of the request back via the pipe for further processing
/// </summary>
internal void ProcessTitanicRequest( PairSocket pipe, IMDPWorker mdpWorker = null)
{
// get a MDP worker with an automatic id and register with the service "titanic.request"
// the worker will automatically start and connect to a MDP Broker at the indicated address
using (var worker = mdpWorker ?? new MDPWorker (m_titanicAddress, TitanicOperation.Request.ToString ()))
{
NetMQMessage reply = null;
while (true)
{
// initiate the communication with sending a 'null', since there is no initial reply
// a request should be [service name][request data]
var request = worker.Receive (reply);
Log (string.Format ("[TITANIC REQUEST] Received request: {0}", request));
//! has there been a breaking cause? -> exit
if (ReferenceEquals (request, null))
break;
//! check if service exists! and return 'Unknown' if not
// generate Guid for the request
var requestId = Guid.NewGuid ();
// save request to file -> [service name][request data]
m_io.SaveMessage (TitanicOperation.Request, requestId, request);
Log (string.Format ("[TITANIC REQUEST] sending through pipe: {0}", requestId));
// send GUID through message queue to main thread
pipe.SendFrame (requestId.ToString ());
// return GUID via reply message via worker.Receive call
reply = new NetMQMessage ();
// [Guid]
reply.Push (requestId.ToString ());
// [Ok][Guid]
reply.Push (TitanicReturnCode.Ok.ToString ());
Log (string.Format ("[TITANIC REQUEST] sending reply: {0}", reply));
}
}
}
private void RunActor(PairSocket shim)
{
// save the shim to the class to use later
m_shim = shim;
// create all subscriber, publisher and beacon
using (m_subscriber = new SubscriberSocket())
using (m_publisher = new PublisherSocket())
using (m_beacon = new NetMQBeacon())
{
// listen to actor commands
m_shim.ReceiveReady += OnShimReady;
// subscribe to all messages
m_subscriber.Subscribe("");
// we bind to a random port, we will later publish this port
// using the beacon
m_randomPort = m_subscriber.BindRandomPort("tcp://*");
Console.WriteLine("Bus subscriber is bound to {0}", m_subscriber.Options.LastEndpoint);
// listen to incoming messages from other publishers, forward them to the shim
m_subscriber.ReceiveReady += OnSubscriberReady;
// configure the beacon to listen on the broadcast port
Console.WriteLine("Beacon is being configured to UDP port {0}", m_broadcastPort);
m_beacon.Configure(m_broadcastPort);
// publishing the random port to all other nodes
Console.WriteLine("Beacon is publishing the Bus subscriber port {0}", m_randomPort);
m_beacon.Publish(m_randomPort.ToString(), TimeSpan.FromSeconds(1));
// Subscribe to all beacon on the port
Console.WriteLine("Beacon is subscribing to all beacons on UDP port {0}", m_broadcastPort);
m_beacon.Subscribe("");
// listen to incoming beacons
m_beacon.ReceiveReady += OnBeaconReady;
// Create a timer to clear dead nodes
NetMQTimer timer = new NetMQTimer(TimeSpan.FromSeconds(1));
timer.Elapsed += ClearDeadNodes;
// Create and configure the poller with all sockets and the timer
m_poller = new NetMQPoller { m_shim, m_subscriber, m_beacon, timer };
// signal the actor that we finished with configuration and
// ready to work
m_shim.SignalOK();
// polling until cancelled
m_poller.Run();
}
}
public void Run(PairSocket shim)
{
m_pipe = shim;
shim.SignalOK();
m_pipe.ReceiveReady += OnPipeReady;
m_pingTimer = new NetMQTimer(interval: TimeSpan.Zero);
m_pingTimer.Elapsed += PingElapsed;
m_pingTimer.Enable = false;
m_poller = new NetMQPoller { m_pipe, m_pingTimer };
m_poller.Run();
// the beacon might never been configured
if (m_udpSocket != null)
m_udpSocket.Close();
}
