예제 #1
0
        private CorrelationContext CorrelateMessage(MultiPartMessage msg)
        {
            _correlationSyncLock.AcquireReaderLock(LockMillisecondsTimeout);

            try
            {
                if (msg.Metadata.Contains("CorrelationId"))
                {
                    string correlationId = (string)msg.Metadata.Read("CorrelationId");

                    if (_correlationDictionary.ContainsKey(correlationId))
                    {
                        CorrelationContext context = _correlationDictionary[correlationId];
                        context.ResponseMessages.Add(msg);
                        return(context);
                    }
                }
            }
            finally
            {
                _correlationSyncLock.ReleaseReaderLock();
            }

            return(null);
        }
예제 #2
0
 /// <summary>
 /// Transmits a request and blocks until a response has been received.
 /// </summary>
 /// <param name="msg">The request message to transmit.</param>
 /// <param name="correlationId">A string used to correlate the request with the response.</param>
 /// <param name="context">
 /// The <see cref="CorrelationContext"/> containing one or more response messages.
 /// </param>
 public void TransmitRequestMessage(MultiPartMessage msg, string correlationId, out CorrelationContext context)
 {
     TransmitRequestMessage(msg, correlationId, Timeout.Infinite, out context);
 }
예제 #3
0
        /// <summary>
        /// Transmits a request and blocks until a response has been received,
        /// or until the specified timeout has elapsed.
        /// </summary>
        /// <param name="msg">The request message to transmit.</param>
        /// <param name="correlationId">A string used to correlate the request with the response.</param>
        /// <param name="millisecondsTimeout">Timeout in milliseconds.</param>
        /// <param name="context">
        /// The <see cref="CorrelationContext"/> containing one or more response messages.
        /// </param>
        public void TransmitRequestMessage(MultiPartMessage msg, string correlationId, int millisecondsTimeout, out CorrelationContext context)
        {
            if (_isDisposed)
            {
                throw new ObjectDisposedException(this.GetType().Name);
            }

            if (!_isRunning)
            {
                throw new InvalidOperationException("Message Engine is not running.");
            }

            if (correlationId == null)
            {
                throw new ArgumentNullException("correlationId");
            }

            msg.Metadata.Write("CorrelationId", correlationId);

            context = new CorrelationContext();

            _correlationSyncLock.AcquireWriterLock(LockMillisecondsTimeout);

            try
            {
                _correlationDictionary.Add(correlationId, context);
            }
            finally
            {
                _correlationSyncLock.ReleaseWriterLock();
            }

            try
            {
                TransmitMessage(msg);

                if (!context.WaitForResponse(millisecondsTimeout))
                {
                    Uri sendUri = (Uri)msg.Metadata.Read("SendUri");
                    throw new RequestTimeoutException("Request timed out: \"" + sendUri + "\".", msg);
                }
            }
            finally
            {
                try
                {
                    context.Dispose();
                }
                finally
                {
                    _correlationSyncLock.AcquireWriterLock(LockMillisecondsTimeout);

                    try
                    {
                        _correlationDictionary.Remove(correlationId);
                    }
                    finally
                    {
                        _correlationSyncLock.ReleaseWriterLock();
                    }
                }
            }
        }
예제 #4
0
        private void MessageReceivedEventHandler(object sender, AdapterReceiveEventArgs e)
        {
            if (!_isRunning)
            {
                return;
            }

            MultiPartMessage msg = e.Message;

            try
            {
                //Block incoming messages if startup in progress
                _blockThreadsWaitEvent.WaitOne();

                //Create message metadata
                msg.Metadata.Write("ReceiveUri", e.ReceiveEndPoint.Uri);
                msg.Metadata.Write("ReceiveAdapterId", e.ReceiveEndPoint.Adapter.AdapterId);

                ComponentPipeline             pipeline         = _receivePipelineDictionary[e.ReceiveEndPoint.Adapter];
                Collection <MultiPartMessage> resultCollection = pipeline.Execute(msg);

                if (resultCollection != null)
                {
                    List <CorrelationContext> contextCollection = new List <CorrelationContext>();

                    foreach (MultiPartMessage resultMsg in resultCollection)
                    {
                        CorrelationContext context = CorrelateMessage(resultMsg);

                        if (context == null)
                        {
                            SubscriptionManager.DistributeMessage(resultMsg);
                        }
                        else
                        {
                            contextCollection.Add(context);
                        }
                    }

                    foreach (CorrelationContext context in contextCollection)
                    {
                        //Signal the requestor thread that a response has been received
                        context.CompleteRequest();
                    }
                }
            }
            catch (Exception ex)
            {
                if (ExceptionHelper.IsCritical(ex))
                {
                    throw;
                }
                else if ((MessageEngine.Instance.Tracing.Switch.Level & SourceLevels.Error) == SourceLevels.Error && _isRunning)
                {
                    if (msg != null)
                    {
                        MessageEngine.Instance.Tracing.TraceData(TraceEventType.Error, msg.GetHashCode(), ex);
                    }
                    else
                    {
                        MessageEngine.Instance.Tracing.TraceData(TraceEventType.Error, 0, ex);
                    }
                }
            }
        }