private void CleanupUnprocessedFiles(SharePointDocumentCollection documents)
{
foreach (SharePointDocument document in documents)
{
try
{
File.Delete(Path.Combine(_tempPath, document.FileName));
}
catch (IOException ex)
{
TraceFactory.Logger.Error(ex);
}
}
}
/// <summary>
/// Processes existing files in the destination being monitored.
/// </summary>
private void ProcessExisting()
{
SharePointDocumentCollection documents = new SharePointDocumentCollection();
SharePointDocumentCollection retrieved = null;
int retrievedCount = -1;
// Download the documents in batches, to avoid overloading the server
do
{
// Retrieve document information and add it to the master list
retrievedCount = -1; //Reset the counter
try
{
retrieved = _library.Retrieve(_query);
retrievedCount = retrieved.Count;
}
catch (WebException webEx)
{
TraceFactory.Logger.Error(webEx);
return; //Unable to connect to the Sharepoint server.
}
catch (Win32Exception winEx)
{
TraceFactory.Logger.Error(winEx);
return; //Unable to connect to the Sharepoint server.
}
// Download each document
foreach (SharePointDocument document in retrieved)
{
try
{
_library.Download(document, _tempPath);
documents.Add(document);
}
catch (WebException webEx)
{
LogDownloadError(document.FileName, webEx);
}
catch (NotSupportedException ex)
{
LogDownloadError(document.FileName, ex);
}
}
// Remove the documents from the server so we don't pick them up again
try
{
_library.Delete(retrieved);
}
catch (WebException webEx)
{
TraceFactory.Logger.Error("Error removing downloaded files from Sharepoint. Cleaning up.", webEx);
CleanupUnprocessedFiles(documents);
return;
}
// Repeat until we get a partial batch, which means we have downloaded
// the remainder of the documents on the server.
} while (retrievedCount == _query.DocumentLimit);
TraceFactory.Logger.Debug("Downloaded {0} documents from {1}.".FormatWith(documents.Count, _library.Name));
// Process the documents. Note that this step must occur after all the documents are downloaded
// so that any metadata files will be present in the directory with their corresponding documents.
var selectedDocuments = documents.Where(n => n.FileName.EndsWith(_fileExtension, StringComparison.OrdinalIgnoreCase));
foreach (SharePointDocument document in selectedDocuments)
{
ProcessDocument(document, Path.Combine(_tempPath, document.FileName));
}
}