/// <summary>
/// Finds the state transition handler.
/// </summary>
/// <param name="currentState">State of the current.</param>
/// <param name="frame">The frame.</param>
/// <returns></returns>
/// <exception cref="IllegalStateTransitionException">if the state transition if not allowed</exception>
private IStateAwareMethodListener FindStateTransitionHandler(AMQState currentState,
AMQMethodBody frame)
{
Type clazz = frame.GetType();
if (_logger.IsDebugEnabled)
{
_logger.Debug("Looking for state transition handler for frame " + clazz);
}
IDictionary classToHandlerMap = (IDictionary)_state2HandlersMap[currentState];
if (classToHandlerMap == null)
{
// if no specialised per state handler is registered look for a
// handler registered for "all" states
return(FindStateTransitionHandler(AMQState.ALL, frame));
}
IStateAwareMethodListener handler = (IStateAwareMethodListener)classToHandlerMap[clazz];
if (handler == null)
{
if (currentState == AMQState.ALL)
{
_logger.Debug("No state transition handler defined for receiving frame " + frame);
Console.WriteLine(" *** No state transition handler defined for receiving frame " + frame); //KHC
return(null);
}
else
{
// if no specialised per state handler is registered look for a
// handler registered for "all" states
return(FindStateTransitionHandler(AMQState.ALL, frame));
}
}
else
{
return(handler);
}
}
/// <summary>
/// This method is called by the MINA dispatching thread. Note that it could
/// be called before BlockForFrame() has been called.
/// </summary>
/// <param name="evt">the frame event</param>
/// <returns>true if the listener has dealt with this frame</returns>
/// <exception cref="AMQException"></exception>
public bool MethodReceived(AMQMethodEvent evt)
{
AMQMethodBody method = evt.Method;
try
{
bool ready = (evt.ChannelId == _channelId) && ProcessMethod(evt.ChannelId, method);
if (ready)
{
_doneEvt = evt;
_resetEvent.Set();
}
return(ready);
}
catch (AMQException e)
{
Error(e);
// we rethrow the error here, and the code in the frame dispatcher will go round
// each listener informing them that an exception has been thrown
throw e;
}
}
public abstract bool ProcessMethod(ushort channelId, AMQMethodBody frame);
public override bool ProcessMethod(ushort channelId, AMQMethodBody frame)
{
return(_expectedClass.IsInstanceOfType(frame));
}
public AMQMethodEvent(ushort channelId, AMQMethodBody method, AMQProtocolSession protocolSession)
{
_channelId = channelId;
_method = method;
_protocolSession = protocolSession;
}
