/// <summary>
/// Imports the resource with the given <paramref name="mediaItemAccessor"/>.
/// </summary>
/// <remarks>
/// This method will be called for file resources as well as for directory resources because some metadata extractors
/// extract their metadata from directories.
/// </remarks>
/// <param name="mediaItemAccessor">File or directory resource to be imported.</param>
/// <param name="parentDirectoryId">Media item id of the parent directory, if present, else <see cref="Guid.Empty"/>.</param>
/// <param name="metadataExtractors">Collection of metadata extractors to apply to the given resoure.</param>
/// <param name="resultHandler">Callback to notify the import results.</param>
/// <param name="mediaAccessor">Convenience reference to the media accessor.</param>
/// <returns><c>true</c>, if metadata could be extracted from the given <paramref name="mediaItemAccessor"/>, else
/// <c>false</c>.</returns>
protected bool ImportResource(ImportJob importJob, IResourceAccessor mediaItemAccessor, Guid parentDirectoryId, ICollection <IMetadataExtractor> metadataExtractors,
IImportResultHandler resultHandler, IMediaAccessor mediaAccessor)
{
const bool forceQuickMode = false; // Allow extractions with probably longer runtime.
ResourcePath path = mediaItemAccessor.CanonicalLocalResourcePath;
ImporterWorkerMessaging.SendImportMessage(ImporterWorkerMessaging.MessageType.ImportStatus, path);
IDictionary <Guid, IList <MediaItemAspect> > aspects = mediaAccessor.ExtractMetadataAsync(mediaItemAccessor, metadataExtractors, forceQuickMode).Result;
if (aspects == null)
{
// No metadata could be extracted
return(false);
}
using (CancellationTokenSource cancelToken = new CancellationTokenSource())
{
try
{
resultHandler.UpdateMediaItemAsync(parentDirectoryId, path, MediaItemAspect.GetAspects(aspects), importJob.JobType == ImportJobType.Refresh, importJob.BasePath);
resultHandler.DeleteUnderPathAsync(path);
}
catch
{
cancelToken.Cancel();
throw;
}
}
return(true);
}
