private async Task <IEnumerable <DeadLetter> > ReadDeadLettersFromServiceBusAsync(string serviceBusQueue)
{
ConcurrentBag <DeadLetter> _deadLetters = new ConcurrentBag <DeadLetter>();
IMessageReceiver messageReceiver = _messageReceiverFactory.Create(serviceBusQueue, ReceiveMode.PeekLock, true);
IList <Message> messages = await messageReceiver.PeekAsync(MaxMessageCount);
await messageReceiver.CloseAsync();
foreach (Message message in messages)
{
// Process the message
var deadletter = new DeadLetter(_messageReader.ReadMessage(Encoding.UTF8.GetString(message.Body)))
{
MessageDate = message.SystemProperties.EnqueuedTimeUtc,
DeadLetterReason = message.UserProperties["DeadLetterReason"].ToString(),
DeadLetterErrorDescription = message.UserProperties["DeadLetterErrorDescription"].ToString(),
SequenceNumber = message.SystemProperties.SequenceNumber,
SubscriptionName = serviceBusQueue
};
_deadLetters.Add(deadletter);
}
return(_deadLetters);
}
private void CreateMessageReceiver(string queueName, int?prefetch = null)
{
if (_messageReceiver != null)
{
return;
}
lock (_padlock)
{
if (_messageReceiver != null)
{
return;
}
_messageReceiver = _messageReceiverFactory.Create(queueName);
if (prefetch.HasValue)
{
_messageReceiver.PrefetchCount = prefetch.Value;
}
}
}