コード例 #1
0
ファイル: DispatcherProcess.cs プロジェクト: slav/lokad-cqrs
        void ProcessMessage(MessageTransportContext context)
        {
            var dispatched = false;

            try
            {
                _dispatcher(context.Unpacked);

                dispatched = true;
            }
            catch (ThreadAbortException)
            {
                // we are shutting down. Stop immediately
                return;
            }
            catch (Exception dispatchEx)
            {
                // if the code below fails, it will just cause everything to be reprocessed later,
                // which is OK (duplication manager will handle this)

                SystemObserver.Notify(new MessageDispatchFailed(context, context.QueueName, dispatchEx));
                // quarantine is atomic with the processing
                _inbox.TryNotifyNack(context);
            }
            if (!dispatched)
            {
                return;
            }
            try
            {
                _inbox.AckMessage(context);
                // 3rd - notify.
                SystemObserver.Notify(new MessageAcked(context));
            }
            catch (ThreadAbortException)
            {
                // nothing. We are going to sleep
            }
            catch (Exception ex)
            {
                // not a big deal. Message will be processed again.
                SystemObserver.Notify(new MessageAckFailed(ex, context));
            }
        }