/// <summary>
/// Exports the specified updates from a local update metadata source to a format compatible with WSUS 2016
/// </summary>
/// <param name="updatesToExport">The updates to export. All categories from the source are also exported</param>
/// <param name="exportFilePath">The export destination file (CAB)</param>
public void Export(List <Update> updatesToExport, string exportFilePath)
{
var exportDirectory = Directory.GetParent(exportFilePath);
if (!exportDirectory.Exists)
{
Directory.CreateDirectory(exportDirectory.FullName);
}
// Pack all XML blobs for updates to be exported into a flat text file
var progress = new OperationProgress()
{
CurrentOperation = OperationType.ExportUpdateXmlBlobStart
};
ExportProgress?.Invoke(this, progress);
var metadataFile = Path.Combine(exportDirectory.FullName, "metadata.txt");
WriteMetadataFile(updatesToExport, metadataFile);
progress.CurrentOperation = OperationType.ExportUpdateXmlBlobEnd;
ExportProgress?.Invoke(this, progress);
// Write metadata for all exported updates, languages and files
progress.CurrentOperation = OperationType.ExportMetadataStart;
ExportProgress?.Invoke(this, progress);
var packageXmlFile = Path.Combine(exportDirectory.FullName, "package.xml");
WritePackagesXml(updatesToExport, packageXmlFile);
progress.CurrentOperation = OperationType.ExportMetadataEnd;
ExportProgress?.Invoke(this, progress);
// Add the above 2 files to a CAB archive
progress.CurrentOperation = OperationType.CompressExportFileStart;
ExportProgress?.Invoke(this, progress);
var result = CabinetUtility.CompressFiles(new List <string>()
{
metadataFile, packageXmlFile
}, exportFilePath);
progress.CurrentOperation = OperationType.CompressExportFileEnd;
ExportProgress?.Invoke(this, progress);
// Delete temporary files
if (File.Exists(metadataFile))
{
File.Delete(metadataFile);
}
if (File.Exists(packageXmlFile))
{
File.Delete(packageXmlFile);
}
}
/// <summary>
/// Adds a list of updates to the query result. The XML metadata is written to disk to avoid running out of memory
/// </summary>
/// <param name="overTheWireUpdates">The updates to add to the result</param>
public void AddUpdates(IEnumerable <ServerSyncUpdateData> overTheWireUpdates)
{
foreach (var overTheWireUpdate in overTheWireUpdates)
{
var updateIdentity = new Identity(overTheWireUpdate.Id);
bool newEntryToBeAdded = false;
lock (Identities)
{
if (!Identities.Contains(updateIdentity))
{
newEntryToBeAdded = true;
}
}
if (newEntryToBeAdded)
{
// We need to parse the XML update blob
string updateXml = overTheWireUpdate.XmlUpdateBlob;
if (string.IsNullOrEmpty(updateXml))
{
// If the plain text blob is not availabe, use the compressed XML blob
if (overTheWireUpdate.XmlUpdateBlobCompressed == null || overTheWireUpdate.XmlUpdateBlobCompressed.Length == 0)
{
throw new Exception("Missing XmlUpdateBlobCompressed");
}
// Note: This only works on Windows.
updateXml = CabinetUtility.DecompressData(overTheWireUpdate.XmlUpdateBlobCompressed);
}
var xdoc = XDocument.Parse(updateXml, LoadOptions.None);
var newUpdate = Update.FromUpdateXml(updateIdentity, xdoc);
AddUpdate(newUpdate, updateXml, out var newUpdateIndex, xdoc);
}
}
}
