private void ProcessOneBook(Book book)
{
try
{
_logger.TrackEvent("ProcessOneBook Start");
string message = $"Processing: {book.BaseUrl}";
Console.Out.WriteLine(message);
_logger.LogVerbose(message);
var initialUpdates = new UpdateOperation();
initialUpdates.UpdateField(Book.kHarvestStateField, Book.HarvestState.InProgress.ToString());
initialUpdates.UpdateField(Book.kHarvesterIdField, this.Identifier);
var startTime = new Parse.Model.Date(DateTime.UtcNow);
initialUpdates.UpdateField("harvestStartedAt", startTime.ToJson());
_parseClient.UpdateObject(book.GetParseClassName(), book.ObjectId, initialUpdates.ToJson());
// Process the book
var finalUpdates = new UpdateOperation();
var warnings = FindBookWarnings(book);
finalUpdates.UpdateField(Book.kWarningsField, Book.ToJson(warnings));
// ENHANCE: Do more processing here
// Write the updates
finalUpdates.UpdateField(Book.kHarvestStateField, Book.HarvestState.Done.ToString());
_parseClient.UpdateObject(book.GetParseClassName(), book.ObjectId, finalUpdates.ToJson());
_logger.TrackEvent("ProcessOneBook End - Success");
}
catch (Exception e)
{
YouTrackIssueConnector.SubmitToYouTrack(e, $"Unhandled exception thrown while processing book \"{book.BaseUrl}\"");
// Attempt to write to Parse that processing failed
if (!String.IsNullOrEmpty(book?.ObjectId))
{
try
{
var onErrorUpdates = new UpdateOperation();
onErrorUpdates.UpdateField(Book.kHarvestStateField, $"\"{Book.HarvestState.Failed.ToString()}\"");
onErrorUpdates.UpdateField(Book.kHarvesterIdField, this.Identifier);
_parseClient.UpdateObject(book.GetParseClassName(), book.ObjectId, onErrorUpdates.ToJson());
}
catch (Exception)
{
// If it fails, just let it be and throw the first exception rather than the nested exception.
}
}
throw;
}
}
private void ProcessOneBook(Book book)
{
try
{
_logger.TrackEvent("ProcessOneBook Start");
string message = $"Processing: {book.BaseUrl}";
Console.Out.WriteLine(message);
_logger.LogVerbose(message);
var initialUpdates = new UpdateOperation();
initialUpdates.UpdateField(Book.kHarvestStateField, Book.HarvestState.InProgress.ToString());
initialUpdates.UpdateField(Book.kHarvesterIdField, this.Identifier);
var startTime = new Parse.Model.Date(DateTime.UtcNow);
initialUpdates.UpdateField("harvestStartedAt", startTime.ToJson());
_parseClient.UpdateObject(book.GetParseClassName(), book.ObjectId, initialUpdates.ToJson());
// Download the book
_logger.TrackEvent("Download Book");
string decodedUrl = HttpUtility.UrlDecode(book.BaseUrl);
string urlWithoutTitle = RemoveBookTitleFromBaseUrl(decodedUrl);
string downloadRootDir = Path.Combine(Path.GetTempPath(), Path.Combine("BloomHarvester", this.Identifier));
_logger.LogVerbose("Download Dir: {0}", downloadRootDir);
string downloadBookDir = _transfer.HandleDownloadWithoutProgress(urlWithoutTitle, downloadRootDir);
// Process the book
var finalUpdates = new UpdateOperation();
var warnings = FindBookWarnings(book);
finalUpdates.UpdateField(Book.kWarningsField, Book.ToJson(warnings));
// ENHANCE: Do more processing here
_logger.TrackEvent("Upload Book");
UploadBook(decodedUrl, downloadBookDir);
// Write the updates
finalUpdates.UpdateField(Book.kHarvestStateField, Book.HarvestState.Done.ToString());
_parseClient.UpdateObject(book.GetParseClassName(), book.ObjectId, finalUpdates.ToJson());
_logger.TrackEvent("ProcessOneBook End - Success");
}
catch (Exception e)
{
YouTrackIssueConnector.SubmitToYouTrack(e, $"Unhandled exception thrown while processing book \"{book.BaseUrl}\"");
// Attempt to write to Parse that processing failed
if (!String.IsNullOrEmpty(book?.ObjectId))
{
try
{
var onErrorUpdates = new UpdateOperation();
onErrorUpdates.UpdateField(Book.kHarvestStateField, $"\"{Book.HarvestState.Failed.ToString()}\"");
onErrorUpdates.UpdateField(Book.kHarvesterIdField, this.Identifier);
_parseClient.UpdateObject(book.GetParseClassName(), book.ObjectId, onErrorUpdates.ToJson());
}
catch (Exception)
{
// If it fails, just let it be and throw the first exception rather than the nested exception.
}
}
throw;
}
}
