/**
* The following Activation methods are used to install the individual handlers.
* The LOCK keyword restricts code from being executed by more than one thread at the same time.
* This makes threaded programs reliable.
*/
private void ActivateResultHandler(int sequenceNumber, IListResultHandler listResultHandler)
{
lock (Controller.Instance.resultLock)
{
Controller.Instance.resultHandlers.Add(sequenceNumber, listResultHandler);
}
}
public void Run()
{
try
{
while (true)
{
Frame frame = Frame.ReadFromStream(Controller.Instance.inputStream);
int sequenceNumber = frame.sequenceNumber;
Command command = frame.command;
switch (command)
{
case Command.RESULT:
IMessageHandler messageHandler;
lock (Controller.Instance.messageLock)
{
messageHandler = Controller.Instance.messageHandlers[sequenceNumber];
}
IListResultHandler listResultHandler = null;
if (Controller.Instance.resultHandlers.Count >= 1)
{
lock (Controller.Instance.resultLock)
{
Console.WriteLine(Controller.Instance.resultHandlers.Count);
listResultHandler = Controller.Instance.resultHandlers[sequenceNumber];
}
}
if (messageHandler != null)
{
string uri = Encoding.UTF8.GetString(frame.PopFirstValue("uri"));
string from = Encoding.UTF8.GetString(frame.PopFirstValue("from"));
bool unpack = true;
byte[] bytes = frame.PopFirstValue("unpack");
if (bytes != null)
{
unpack = bool.Parse(Encoding.UTF8.GetString(bytes));
}
Message message;
if (unpack)
{
message = new Message(from, uri, frame.payloadObjects, frame.routingObjects);
}
else
{
message = new Message(from, uri, null, null);
}
messageHandler.ResultReceived(message);
}
else if (listResultHandler != null)
{
string finishedStr = Encoding.UTF8.GetString(frame.PopFirstValue("finished"));
bool finished = bool.Parse(finishedStr);
if (finished)
{
listResultHandler.finish();
}
else
{
string child = Encoding.UTF8.GetString(frame.PopFirstValue("child"));
listResultHandler.Result(child);
}
}
break;
case Command.RESPONSE:
IResponseHandler responseHandler;
lock (Controller.Instance.responseLock)
{
responseHandler = Controller.Instance.responseHandlers[sequenceNumber];
}
if (responseHandler != null)
{
string status = Encoding.UTF8.GetString(frame.PopFirstValue("status"));
string reason = null;
if (!status.Equals("okay"))
{
reason = Encoding.UTF8.GetString(frame.PopFirstValue("reason"));
}
responseHandler.ResponseReceived(new Response(status, reason));
}
break;
default:
break;
}
}
}
catch (Exception ex) when(ex is SocketException || ex is SystemException || ex is IOException || ex is ObjectDisposedException)
{
if (ex is IOException)
{
throw new SystemException("Failed to read Frame.\n", ex);
}
}
}
