private void OnProcessFailed(string messageId, DomainEventMessageContent content, Exception exception)
{
EventHandler <MessageProcessFailedEventArgs> eh = this.ProcessFailed;
if (eh != null)
{
MessageProcessFailedEventArgs e = new MessageProcessFailedEventArgs(messageId, content, exception);
eh(this, e);
}
}
private void OnProcessing(DomainEventMessageContent content)
{
EventHandler <MessageProcessingEventArgs> eh = this.Processing;
if (eh != null)
{
MessageProcessingEventArgs e = new MessageProcessingEventArgs(content);
eh(this, e);
}
}
public MessageProcessFailedEventArgs(string messageId, DomainEventMessageContent messageContent, Exception exception)
{
this.MessageId = messageId;
this.MessageContent = messageContent;
this.Exception = exception;
}
public MessageProcessingEventArgs(DomainEventMessageContent messageContent)
{
this.MessageContent = messageContent;
}
private void worker_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker localWorker = sender as BackgroundWorker;
if (localWorker.CancellationPending)
{
e.Cancel = true;
return;
}
List <string> allMessageIds = e.Argument as List <string>;
var messageCount = allMessageIds.Count;
List <DomainEventMessageContent> messageContents = new List <DomainEventMessageContent>();
using (MessageQueue messageQueue = new MessageQueue(this.EventMessageQueue))
{
messageQueue.MessageReadPropertyFilter.SentTime = true;
for (int i = 0; i < messageCount; i++)
{
Message message = messageQueue.PeekById(allMessageIds[i], this.EventMessageReceiveTimeout);
var messageContent = new DomainEventMessageContent(message);
messageContents.Add(messageContent);
}
messageQueue.Close();
}
var sortedMessageContents = messageContents.OrderBy(mc => mc.SentTime);
foreach (var mc in sortedMessageContents)
{
bool canRemove = true;
try
{
if (!mc.IsValidMessage)
{
throw new Exception("Invalid Message Content.");
}
OnProcessing(mc);
Type eventType = Type.GetType(mc.Type);
if (eventType != null)
{
DomainEventXmlSerializer xmlSerializer = new DomainEventXmlSerializer();
var domainEvent = xmlSerializer.Deserialize(eventType, mc.Bytes);
messageDispatcher.DispatchMessage(domainEvent);
}
else
{
canRemove = false;
}
}
catch (Exception ex)
{
OnProcessFailed(mc.MessageId, mc, ex);
canRemove = false;
}
finally
{
if (canRemove)
{
using (MessageQueue messageQueue = new MessageQueue(this.EventMessageQueue))
{
try
{
messageQueue.ReceiveById(mc.MessageId, this.EventMessageReceiveTimeout);
}
finally
{
messageQueue.Close();
}
}
}
}
}
}