async Task ProcessMessagesAsync(Message message, CancellationToken token)
{
if (_queueClient.IsClosedOrClosing)
{
Logger.Log("Queue is closing, abandoning message.");
await _queueClient.AbandonAsync(message.SystemProperties.LockToken);
return;
}
string videoUrl = "";
try
{
// Process the message.
Logger.Log($"Received message: SequenceNumber:{message.SystemProperties.SequenceNumber} Body:{Encoding.UTF8.GetString(message.Body)}");
string json = Encoding.UTF8.GetString(message.Body);
videoUrl = QueueMessageParser.GetUrl(json);
Logger.Log($"Received this videoUrl: {videoUrl}");
if (videoUrl.EndsWith("test.MP4"))
{
throw new ApplicationException("Something broke, fail safe for testing exceptions!");
}
SkiVideoProcessor processor = new SkiVideoProcessor(videoUrl);
await processor.ProcessAsync();
await _queueClient.CompleteAsync(message.SystemProperties.LockToken);
}
catch (Exception e)
{
if (message.SystemProperties.DeliveryCount <= 2)
{
Logger.Log($"Abandoned message.", e);
// abandon and allow another to try in case of transient errors
await _queueClient.AbandonAsync(message.SystemProperties.LockToken);
}
else
{
Logger.Log($"Dead lettering message.", e);
await _queueClient.DeadLetterAsync(message.SystemProperties.LockToken,
e.Message, e.InnerException?.Message);
}
}
finally
{
Logger.Log($"Message handler completed for {videoUrl}.");
if (Completed != null)
{
Completed(this, null);
}
}
}
private string GetVideoUrlFromRequest()
{
string json = GetJsonFromBody();
string videoUrl = QueueMessageParser.GetUrl(json);
if (videoUrl == null || videoUrl.Trim() == string.Empty)
{
throw new ApplicationException("Unable to find video url in payload: \n" + json);
}
return(videoUrl);
}