public async Task ProcessAsync <T>(IMessageStateHandler <T> messageStateHandler, IPipelineInformation pipelineInformation, IMessageProcessor next, CancellationToken cancellationToken) where T : class, IMessage
{
IMessageAttachment attachment = null;
var queueName = AutoMessageMapper.GetQueueName <T>();
try
{
string attachmentId = null;
if (typeof(ICommandWithAttachment).IsAssignableFrom(typeof(T)))
{
attachmentId = AttachmentUtility.GetAttachmentIds(messageStateHandler.MessageProperties).FirstOrDefault();
if (!string.IsNullOrEmpty(attachmentId))
{
attachment = await _attachmentProvider.GetAttachmentAsync(queueName, attachmentId, cancellationToken).ConfigureAwait(false);
var message = (ICommandWithAttachment)await messageStateHandler.GetMessageAsync().ConfigureAwait(false);
message.Attachment = attachment;
}
}
await next.ProcessAsync(messageStateHandler, cancellationToken).ConfigureAwait(false);
if (attachment != null)
{
attachment.Stream?.Dispose();
await _attachmentProvider.DeleteAttachmentAsync(queueName, attachmentId, cancellationToken).ConfigureAwait(false);
}
}
finally
{
attachment?.Stream?.Dispose();
}
}