/// <summary>
/// Receive next message from network; the message may be a control.
/// message (ENTER, EXIT, JOIN, LEAVE, STOP, EVASIVE) or data (WHISPER, SHOUT).
/// </summary>
/// <returns>message</returns>
public NetMQMessage Receive()
{
if (_useEvents)
{
throw new Exception("Disallowed due to the constructor used. Receive via events instead.");
}
return(_inbox.ReceiveMultipartMessage());
}
private void OnShimReady(object sender, NetMQSocketEventArgs e)
{
var command = _shim.ReceiveFrameString();
switch (command)
{
case NetMQActor.EndShimMessage:
{
_poll.Stop();
break;
}
case PublishCommand:
{
_publisher.SendMultipartMessage(_shim.ReceiveMultipartMessage());
break;
}
case GetHostAddressCommand:
{
_shim.SendFrame($"{_beacon.BoundTo}:{_port}");
break;
}
}
}
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));
}
}
}
private void OnShimReady(object sender, NetMQSocketEventArgs e)
{
// new actor command
string command = m_shim.ReceiveFrameString();
// check if we received end shim command
if (command == NetMQActor.EndShimMessage)
{
// we cancel the socket which dispose and exist the shim
m_poller.Stop();
}
else if (command == PublishCommand)
{
// it is a publish command
// we just forward everything to the publisher until end of message
NetMQMessage message = m_shim.ReceiveMultipartMessage();
m_publisher.SendMultipartMessage(message);
}
else if (command == GetHostAddressCommand)
{
var interfaceCollection = new InterfaceCollection();
var bindTo = interfaceCollection.Select(x => x.Address).First();
var address = bindTo + ":" + m_randomPort;
m_shim.SendFrame(address);
}
}
public void Run(PairSocket shim)
{
shim.SignalOK();
while (true)
{
try
{
//Message for this actor/shim handler is expected to be
//Frame[0] : Command
//Frame[2] : AccountAction as JSON
//Frame[1] : Account as JSON
//
//Result back to actor is a JSON message of the amended Account
NetMQMessage msg = shim.ReceiveMultipartMessage();
string command = msg[0].ConvertToString();
if (command == NetMQActor.EndShimMessage)
{
break;
}
if (msg[0].ConvertToString() == "AMEND ACCOUNT")
{
string accountActionJson = msg[1].ConvertToString();
var accountAction = JsonConvert.DeserializeObject <AccountAction>(accountActionJson);
string accountJson = msg[2].ConvertToString();
var account = JsonConvert.DeserializeObject <Account>(accountJson);
if (account != null && accountAction != null)
{
AmendAccount(accountAction, account);
shim.SendFrame(JsonConvert.SerializeObject(account));
}
else
{
shim.SendFrame("Error: incorrectly formatted message to actor");
}
}
else
{
shim.SendFrame("Error: invalid message to actor");
}
}
// 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 (Exception e)
{
shim.SendFrame($"Error: Exception occurred {e.Message}");
}
}
}
public void Run(PairSocket shim)
{
shim.SignalOK();
while (true)
{
try
{
//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 = shim.ReceiveMultipartMessage();
string command = msg[0].ConvertToString();
if (command == NetMQActor.EndShimMessage)
{
break;
}
if (command == "ECHO")
{
shim.Send(string.Format("ECHO BACK : {0}", msg[1].ConvertToString()));
}
else
{
shim.Send("Error: invalid message to actor");
}
}
// 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 (Exception e)
{
shim.Send(string.Format("Error: Exception occurred {0}", e.Message));
}
}
}
private void OnShimReady(object sender, NetMQSocketEventArgs e)
{
// new actor command
var command = shim.ReceiveFrameString();
// check if we received end shim command
if (command == NetMQActor.EndShimMessage)
{
// we cancel the socket which dispose and exist the shim
poller.Stop();
}
else if (command == PublishCommand)
{
// it is a publish command
// we just forward everything to the publisher until end of message
var message = shim.ReceiveMultipartMessage();
publisher.SendMultipartMessage(message);
}
else if (command == GetHostAddressCommand)
{
var address = beacon.BoundTo + ":" + randomPort;
shim.SendFrame(address);
}
}
private void OnShimReady(object sender, NetMQSocketEventArgs e)
{
// new actor command
var command = _shim.ReceiveFrameString();
// check if we received end shim command
if (command == NetMQActor.EndShimMessage)
{
// we cancel the socket which dispose and exist the shim
_poller.Stop();
}
else if (command == TaskSchedulerBusCommands.Publish.ToString())
{
// it is a publish command
// we just forward everything to the publisher until end of message
var message = _shim.ReceiveMultipartMessage();
_publisher.SendMultipartMessage(message);
}
else if (command == TaskSchedulerBusCommands.GetHostAddress.ToString())
{
var address = _beacon.HostName + ":" + _randomPort;
_shim.SendFrame(address);
}
}
private void OnMessagePipeReady(object sender, NetMQSocketEventArgs e)
{
NetMQMessage request = m_messagesPipe.ReceiveMultipartMessage();
OnOutgoingMessage(request);
}
/// <summary>
/// Here we handle the different control messages from the front-end
/// </summary>
private void ReceiveApi()
{
// Get the whole message off the pipe in one go
var request = _pipe.ReceiveMultipartMessage();
var command = request.Pop().ConvertToString();
switch (command)
{
case "UUID":
_pipe.SendFrame(_uuid.ToByteArray());
break;
case "NAME":
_pipe.SendFrame(_name);
break;
case "ENDPOINT":
_pipe.SendFrame(_endpoint ?? "");
break;
case "SET NAME":
_name = request.Pop().ConvertToString();
Debug.Assert(!String.IsNullOrEmpty(_name));
break;
case "SET HEADER":
var key = request.Pop().ConvertToString();
var value = request.Pop().ConvertToString();
_headers[key] = value;
break;
case "SET PORT":
var str = request.Pop().ConvertToString();
Int32.TryParse(str, out _beaconPort);
break;
case "SET INTERVAL":
var intervalStr = request.Pop().ConvertToString();
TimeSpan.TryParse(intervalStr, out _interval);
break;
case "START":
var interfaceName = request.Pop().ConvertToString();
Start(interfaceName);
break;
case "STOP":
Stop();
break;
case "WHISPER":
// Get peer to send message to
var uuid = PopGuid(request);
ZyrePeer peer;
if (_peers.TryGetValue(uuid, out peer))
{
// Send frame on out to peer's mailbox, drop message
// if peer doesn't exist (may have been destroyed)
var msg = new ZreMsg
{
Id = ZreMsg.MessageId.Whisper,
Whisper = { Content = request }
};
peer.Send(msg);
}
break;
case "SHOUT":
// Get group to send message to
var groupNameShout = request.Pop().ConvertToString();
ZyreGroup group;
if (_peerGroups.TryGetValue(groupNameShout, out group))
{
var msg = new ZreMsg
{
Id = ZreMsg.MessageId.Shout,
Shout = { Group = groupNameShout, Content = request }
};
group.Send(msg);
}
break;
case "JOIN":
var groupNameJoin = request.Pop().ConvertToString();
ZyreGroup groupJoin;
if (!_ownGroups.TryGetValue(groupNameJoin, out groupJoin))
{
// Only send if we're not already in group
ZyreGroup.NewGroup(groupNameJoin, _ownGroups);
// Update status before sending command
_status = _status == UbyteMax ? (byte)0 : ++_status;
var msg = new ZreMsg
{
Id = ZreMsg.MessageId.Join,
Join =
{
Group = groupNameJoin,
Status = _status
}
};
foreach (var peerJoin in _peers.Values)
{
peerJoin.Send(msg);
}
}
break;
case "LEAVE":
var groupNameLeave = request.Pop().ConvertToString();
ZyreGroup groupLeave;
if (_ownGroups.TryGetValue(groupNameLeave, out groupLeave))
{
// Only send if we are actually in group
// Update status before sending command
_status = _status == UbyteMax ? (byte)0 : ++_status;
var msg = new ZreMsg
{
Id = ZreMsg.MessageId.Leave,
Leave =
{
Group = groupNameLeave,
Status = _status
}
};
foreach (var peerLeave in _peers.Values)
{
peerLeave.Send(msg);
}
_ownGroups.Remove(groupNameLeave);
}
break;
case "PEERS":
// Send the list of the _peers keys
var peersKeyBuffer = Serialization.BinarySerialize(_peers.Keys.ToList());
_pipe.SendFrame(peersKeyBuffer);
break;
case "PEER ENDPOINT":
var uuidForEndpoint = PopGuid(request);
var peerForEndpoint = _peers[uuidForEndpoint]; // throw exception if not found
_pipe.SendFrame(peerForEndpoint.Endpoint);
break;
case "PEER NAME":
var uuidForName = PopGuid(request);
var peerForName = _peers[uuidForName]; // throw exception if not found
_pipe.SendFrame(peerForName.Name);
break;
case "PEER HEADER":
var uuidForHeader = PopGuid(request);
var keyForHeader = request.Pop().ConvertToString();
ZyrePeer peerForHeader;
if (_peers.TryGetValue(uuidForHeader, out peerForHeader))
{
string header;
if (peerForHeader.Headers.TryGetValue(keyForHeader, out header))
{
_pipe.SendFrame(header);
}
else
{
_loggerDelegate?.Invoke($"No header with key {keyForHeader} in peer uuidShort={uuidForHeader.ToShortString6()}");
_pipe.SendFrame("");
}
}
else
{
_loggerDelegate?.Invoke($"PEER HEADER requested for peer uuidShort={uuidForHeader.ToShortString6()} that is not a peer");
_pipe.SendFrame("");
}
break;
case "PEER GROUPS":
// Send a list of the _peerGroups keys, comma-delimited
var peerGroupsKeyBuffer = Serialization.BinarySerialize(_peerGroups.Keys.ToList());
_pipe.SendFrame(peerGroupsKeyBuffer);
break;
case "OWN GROUPS":
// Send a list of the _ownGroups keys, comma-delimited
var ownGroupsKeyBuffer = Serialization.BinarySerialize(_ownGroups.Keys.ToList());
_pipe.SendFrame(ownGroupsKeyBuffer);
break;
case "DUMP":
Dump();
break;
case NetMQActor.EndShimMessage:
// API shut us down
_poller?.Stop();
break;
default:
throw new ArgumentException(command);
}
}
