public async Task DeQueueAsync(
IMessage message,
IEnumerable <MessageRegistration> messageRegistrations)
{
if (message is IPreparedMessage preparedMessage)
{
if (await _dataProtector.UnprotectAsync <Guid>(preparedMessage.SecurityToken, SharedDataKeys.Queue) != preparedMessage.Id)
{
throw new BusinessApplicationException(ExceptionType.Unknown, "Unable to verify sender of message");
}
string unprotectedMessage = await _dataProtector.UnprotectAsync <string>(preparedMessage.Payload, SharedDataKeys.Queue);
IMessage deserialisedMessage = _messageSerialiser.Deserialise(unprotectedMessage);
using (_serviceProvider.CreateScope())
{
using (ITransaction transaction = _transactionManager.Create())
{
try
{
foreach (MessageRegistration messageRegistration in messageRegistrations)
{
await(Task) messageRegistration.AsyncHandler.DynamicInvoke(deserialisedMessage);
transaction.Commit();
}
}
catch (Exception e)
{
throw new BusinessApplicationException(ExceptionType.Unknown, $"Unable to dequeue message for type: {message.Type}", e);
}
}
using (ITransaction transaction = _transactionManager.Create())
{
try
{
_messageDispatcher = _serviceProvider.GetRequiredService <IMessageDispatcher>();
await _messageDispatcher.DispatchMessagesAsync();
transaction.Commit();
}
catch (Exception e)
{
throw new BusinessApplicationException(ExceptionType.Unknown, $"Unable to forward messages for type: {message.Type}", e);
}
}
}
}
else
{
throw new BusinessApplicationException(ExceptionType.Unknown, "Unable to verify sender of message");
}
}
