/// <summary>
/// Handle an message
/// </summary>
/// <param name="context">Context unique for this handler instance</param>
/// <param name="message">Message to process</param>
/// <remarks>
/// All messages that can't be handled MUST be send up the chain using <see cref="IPipelineHandlerContext.SendUpstream"/>.
/// </remarks>
public void HandleUpstream(IPipelineHandlerContext context, IPipelineMessage message)
{
if (message is EventRecieved)
{
HandleBackgroundCompletion(context, (EventRecieved)message);
return;
}
if (!(message is ReceivedMessage))
{
context.SendUpstream(message);
return;
}
var msg = (ReceivedMessage)message;
var type = msg.Message.Headers["Content-Type"];
if (type == null || type != "command/reply")
{
context.SendUpstream(message);
return;
}
SendCommandMessage nextCommand = null;
ICommand curMsg;
lock (_outbound)
{
if (_current == null)
{
throw new InvalidOperationException("No active command set.");
}
_logger.Trace("Got reply for " + _current);
curMsg = _current;
nextCommand = _outbound.Count > 0 ? _outbound.Dequeue() : null;
_current = null;
}
if (curMsg is BgApiCmd)
{
HandleBgApi(context, msg.Message, (BgApiCmd)curMsg);
}
else
{
var result = msg.Message.Headers["Reply-Text"].StartsWith("+");
var body = msg.Message.Headers["Reply-Text"];
var reply = new CommandReply(curMsg, result, body);
_logger.Debug("Sending reply " + body);
context.SendUpstream(reply);
}
if (nextCommand != null)
{
_logger.Trace("Sending next command down: " + nextCommand.Command);
SendCommand(context, nextCommand);
}
}
private void SendCommand(IPipelineHandlerContext context, SendCommandMessage msg)
{
if (msg.Command is AuthCmd || msg.Command is SubscribeOnEvents)
{
context.SendDownstream(msg);
_current = msg.Command;
return;
}
_current = new BgApiCmd(msg.Command);
var message = new SendCommandMessage(_current);
context.SendDownstream(message);
}