public static IRepositoryBuilder UseDocumentPreviewProvider(this IRepositoryBuilder repositoryBuilder,
DocumentPreviewProvider previewProvider)
{
Providers.Instance.PreviewProvider = previewProvider;
return(repositoryBuilder);
}
public void Finalize(SnTaskResult result)
{
if (result.Successful || result.Task == null || result.Task.Type.CompareTo("AsposePreviewGenerator") != 0 || string.IsNullOrEmpty(result.Task.TaskData))
{
return;
}
try
{
var settings = new JsonSerializerSettings {
DateFormatHandling = DateFormatHandling.IsoDateFormat
};
var serializer = JsonSerializer.Create(settings);
using (var jreader = new JsonTextReader(new StringReader(result.Task.TaskData)))
{
var previewData = serializer.Deserialize(jreader) as JObject;
var contentId = previewData["Id"].Value <int>();
using (new SystemAccount())
{
DocumentPreviewProvider.SetPreviewStatus(Node.Load <File>(contentId), PreviewStatus.Error);
}
}
}
catch (Exception ex)
{
Logger.WriteException(ex);
}
}
// ================================================================================= Observer methods
protected override void OnNodeCreated(object sender, NodeEventArgs e)
{
base.OnNodeCreated(sender, e);
if (e.SourceNode.CopyInProgress)
{
return;
}
DocumentPreviewProvider.StartPreviewGeneration(e.SourceNode, GetPriority(e.SourceNode as File));
}
// ================================================================================= Observer methods
protected override void OnNodeCreating(object sender, CancellableNodeEventArgs e)
{
base.OnNodeCreating(sender, e);
if (e.SourceNode.CopyInProgress)
{
return;
}
DocumentPreviewProvider.InitializePreviewGeneration(e.SourceNode);
}
protected override void OnNodeModified(object sender, NodeEventArgs e)
{
base.OnNodeModified(sender, e);
// check: fire only when the relevant fields had been modified (binary, version, ...)
if (!e.ChangedData.Any(d => MONITORED_FIELDS.Contains(d.Name)))
{
return;
}
DocumentPreviewProvider.StartPreviewGeneration(e.SourceNode, GetPriority(e.SourceNode as File));
}
public virtual void Finalize(SnTaskResult result)
{
// not enough information
if (result.Task == null || string.IsNullOrEmpty(result.Task.TaskData))
{
return;
}
// the task was executed successfully without an error message
if (result.Successful && result.Error == null)
{
return;
}
try
{
if (result.Error != null)
{
// log the error message and details for admins
Logger.WriteError(ContentRepository.EventId.Preview.PreviewGenerationError,
"Preview generation error, see the details below.", properties: new Dictionary <string, object>
{
{ "ErrorCode", result.Error.ErrorCode },
{ "ErrorType", result.Error.ErrorType },
{ "Message", result.Error.Message },
{ "Details", result.Error.Details }
});
}
// deserialize task data to retrieve content info
var settings = new JsonSerializerSettings {
DateFormatHandling = DateFormatHandling.IsoDateFormat
};
var serializer = JsonSerializer.Create(settings);
using (var jreader = new JsonTextReader(new IO.StringReader(result.Task.TaskData)))
{
var previewData = serializer.Deserialize(jreader) as JObject;
var contentId = previewData["Id"].Value <int>();
using (new SystemAccount())
{
DocumentPreviewProvider.SetPreviewStatus(Node.Load <File>(contentId), PreviewStatus.Error);
}
}
}
catch (Exception ex)
{
Logger.WriteException(ex);
}
}
protected override void OnNodeModified(object sender, NodeEventArgs e)
{
base.OnNodeModified(sender, e);
// check: fire only when the relevant fields had been modified (binary, version, ...)
if (!e.ChangedData.Any(d => MONITORED_FIELDS.Contains(d.Name)))
{
return;
}
var versionData = e.ChangedData.FirstOrDefault(d => d.Name.Equals("Version", StringComparison.OrdinalIgnoreCase));
if (versionData != null)
{
var originalVersion = VersionNumber.Parse(versionData.Original.ToString());
// if the status changed from Locked to not locked, and the version number has been decreesed: undo or checkin
if (originalVersion.Status == VersionStatus.Locked &&
e.SourceNode.Version.Status != VersionStatus.Locked &&
originalVersion > e.SourceNode.Version &&
DocumentPreviewProvider.Current.IsContentSupported(e.SourceNode))
{
// Undo or Checkin: we will start to delete unnecessary images for the
// removed version (w/o waiting for the delete operations to complete).
DocumentPreviewProvider.Current.RemovePreviewImagesAsync(e.SourceNode.Id, originalVersion);
// This was an UNDO operation, it is unnecessary to start a preview generator process
if (string.Compare(NodeOperation.UndoCheckOut, e.SourceNode.NodeOperation, StringComparison.OrdinalIgnoreCase) == 0)
{
return;
}
}
}
DocumentPreviewProvider.StartPreviewGeneration(e.SourceNode, GetPriority(e.SourceNode as File));
}
