public void EnqueueMessage(MessageBusMessage message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
if (!MessageBusFilterComparer.IsMatch(message.Message, Filter))
{
return;
}
_messageQueue.Enqueue(message);
}
void DispatchMessageBusMessages()
{
while (!_systemCancellationToken.Token.IsCancellationRequested)
{
try
{
var message = _messageQueue.Take(_systemCancellationToken.Token);
if (_systemCancellationToken.Token.IsCancellationRequested)
{
return;
}
if (message == null)
{
continue;
}
_messageHistory.Add(message);
List <MessageBusSubscriber> subscribers;
lock (_subscribers)
{
subscribers = new List <MessageBusSubscriber>(_subscribers.Values);
}
foreach (var subscriber in subscribers)
{
if (MessageBusFilterComparer.IsMatch(message.Message, subscriber.Filter))
{
Task.Run(() => subscriber.ProcessMessage(message.Message)).Forget(_logger);
_processingRateCounter.Increment();
}
}
}
catch (ThreadAbortException)
{
}
catch (OperationCanceledException)
{
}
catch (Exception exception)
{
_logger.LogError(exception, "Error while dispatching messages.");
Thread.Sleep(TimeSpan.FromSeconds(1));
}
}
}
