示例#1
0
        async void TryAsyncReceive(CancellationToken token, IDisposable parallelOperation)
        {
            try
            {
                using (parallelOperation)
                using (var context = new TransactionContext())
                {
                    var transportMessage = await ReceiveTransportMessage(token, context);

                    if (transportMessage == null)
                    {
                        context.Dispose();

                        // no need for another thread to rush in and discover that there is no message
                        //parallelOperation.Dispose();

                        _backoffStrategy.WaitNoMessage();
                        return;
                    }

                    _backoffStrategy.Reset();

                    await ProcessMessage(context, transportMessage);
                }
            }
            catch (TaskCanceledException)
            {
                // it's fine - just a sign that we are shutting down
            }
            catch (OperationCanceledException)
            {
                // it's fine - just a sign that we are shutting down
            }
            catch (Exception exception)
            {
                _log.Error(exception, "Unhandled exception in thread pool worker");
            }
        }
示例#2
0
        async Task ProcessMessage(TransactionContext context, TransportMessage transportMessage)
        {
            try
            {
                context.Items["OwningBus"] = _owningBus;

                AmbientTransactionContext.SetCurrent(context);

                var incomingSteps = _pipeline.ReceivePipeline();
                var stepContext = new IncomingStepContext(transportMessage, context);
                await _pipelineInvoker.Invoke(stepContext, incomingSteps);

                try
                {
                    await context.Complete();
                }
                catch (Exception exception)
                {
                    _log.Error(exception, "An error occurred when attempting to complete the transaction context");
                }
            }
            catch (ThreadAbortException exception)
            {
                context.Abort();

                _log.Error(exception, $"Worker was killed while handling message {transportMessage.GetMessageLabel()}");
            }
            catch (Exception exception)
            {
                context.Abort();

                _log.Error(exception, $"Unhandled exception while handling message {transportMessage.GetMessageLabel()}");
            }
            finally
            {
                AmbientTransactionContext.SetCurrent(null);
            }
        }
示例#3
0
 public void Dispose()
 {
     TransactionContext.Clear();
     Cleanup();
 }
        async Task TimerElapsed()
        {
            using (var result = await _timeoutManager.GetDueMessages())
            {
                foreach (var dueMessage in result)
                {
                    var transportMessage = dueMessage.ToTransportMessage();
                    var returnAddress = transportMessage.Headers[Headers.DeferredRecipient];

                    _log.Debug("Sending due message {0} to {1}",
                        transportMessage.Headers[Headers.MessageId],
                        returnAddress);

                    using (var context = new TransactionContext())
                    {
                        await _transport.Send(returnAddress, transportMessage, context);

                        await context.Complete();
                    }

                    await dueMessage.MarkAsCompleted();
                }

                await result.Complete();
            }
        }
示例#5
0
 /// <summary>
 /// Constructs the context and sets itself as current in <see cref="TransactionContext"/>.
 /// </summary>
 public TxBomkarl()
 {
     TransactionContext.Set(this);
     threadName = Thread.CurrentThread.Name;
 }