private static async Task PollFeeds()
{
for (; ; await Task.Delay(600_000))
{
try {
await _semaphore.WaitAsync();
// We want to process these
// in sequence, to avoid disrupting a previous step.
var toDownload = (await _rssService.GetNewHashesFromFeeds()).TakeLast(10);
if (toDownload.Any())
{
await _torrentService.DownloadHashes(toDownload.Select(d => d.Hash));
await _rssService.AddHashDownloads(toDownload);
foreach (var download in toDownload)
{
_logger.LogInformation($"Downloaded New Hash: {download.Id}");
}
// add a slight delay for the above to register correctly in
// the torrent client - otherwise we'll skip too far ahead &
// pick up files that aren't properly registered in our torrent client.
await Task.Delay(5000);
}
_logger.LogInformation("Poll for feeds has finished.");
}
catch (Exception ex) {
_logger.LogError(ex, "Error thrown on polling feeds.");
}
finally {
_semaphore.Release();
}
}
}