//$<PlaceholderFolder.CreatePlaceholders
/// <summary>
/// Creates a new file or folder placeholder in user file system.
/// </summary>
/// <param name="userFileSystemParentPath">User file system folder path in which the new item will be created.</param>
/// <param name="newItemsInfo">Array of new files and folders.</param>
/// <returns>Number of items created.</returns>
public static async Task <uint> CreateAsync(string userFileSystemParentPath, FileSystemItemBasicInfo[] newItemsInfo)
{
try
{
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
// Here we also check that the folder content was loaded into user file system (the folder is not offline).
if (Directory.Exists(userFileSystemParentPath) &&
!new DirectoryInfo(userFileSystemParentPath).Attributes.HasFlag(System.IO.FileAttributes.Offline))
{
// Create placeholders.
uint created = new PlaceholderFolder(userFileSystemParentPath).CreatePlaceholders(newItemsInfo);
// Create ETags.
foreach (FileSystemItemBasicInfo child in newItemsInfo)
{
string userFileSystemItemPath = Path.Combine(userFileSystemParentPath, child.Name);
await ETag.SetETagAsync(userFileSystemItemPath, child.ETag);
// Set the "locked by another user" icon and all custom columns data.
await new UserFileSystemRawItem(userFileSystemItemPath).SetLockedByAnotherUserAsync(child.LockedByAnotherUser);
await new UserFileSystemRawItem(userFileSystemItemPath).SetCustomColumnsDataAsync(child.CustomProperties);
}
return(created);
}
}
catch (ExistsException ex)
{
// "Cannot create a file when that file already exists."
//await new UserFileSystemItem(userFileSystemParentPath).ShowDownloadErrorAsync(ex);
// Rethrow the exception preserving stack trace of the original exception.
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex).Throw();
}
return(0);
}
static async Task Main(string[] args)
{
// Load Settings.
IConfiguration configuration = new ConfigurationBuilder().AddJsonFile("appsettings.json", false, true).Build();
Settings = configuration.ReadSettings();
// Load Log4Net for net configuration.
var logRepository = LogManager.GetRepository(Assembly.GetEntryAssembly());
XmlConfigurator.Configure(logRepository, new FileInfo(Path.Combine(Path.GetDirectoryName(Assembly.GetEntryAssembly().Location), "log4net.config")));
// Enable UTF8 for Console Window
Console.OutputEncoding = System.Text.Encoding.UTF8;
log.Info($"\n{System.Diagnostics.Process.GetCurrentProcess().ProcessName} {Settings.AppID}");
log.Info("\nPress 'Q' to unregister file system, delete all files/folders and exit (simulate uninstall with full cleanup).");
log.Info("\nPress 'q' to unregister file system and exit (simulate uninstall).");
log.Info("\nPress any other key to exit without unregistering (simulate reboot).");
log.Info("\n----------------------\n");
// Typically you will register sync root during your application installation.
// Here we register it during first program start for the sake of the development convenience.
if (!await Registrar.IsRegisteredAsync(Settings.UserFileSystemRootPath))
{
log.Info($"\nRegistering {Settings.UserFileSystemRootPath} sync root.");
Directory.CreateDirectory(Settings.UserFileSystemRootPath);
await Registrar.RegisterAsync(SyncRootId, Settings.UserFileSystemRootPath, Settings.ProductName,
Path.Combine(Settings.IconsFolderPath, "Drive.ico"));
// Set root item ID. It will be passed to IEngine.GetFileSystemItemAsync() method
// as itemId parameter when a root folder is requested.
byte[] itemId = WindowsFileSystemItem.GetItemIdByPath(Settings.RemoteStorageRootPath);
PlaceholderFolder.GetItem(Settings.UserFileSystemRootPath).SetItemId(itemId);
}
else
{
log.Info($"\n{Settings.UserFileSystemRootPath} sync root already registered.");
}
// Log indexed state.
StorageFolder userFileSystemRootFolder = await StorageFolder.GetFolderFromPathAsync(Settings.UserFileSystemRootPath);
log.Info($"\nIndexed state: {(await userFileSystemRootFolder.GetIndexedStateAsync())}\n");
ConsoleKeyInfo exitKey;
try
{
Engine = new VirtualEngine(Settings.UserFileSystemLicense, Settings.UserFileSystemRootPath, Settings.RemoteStorageRootPath, log);
// Start processing OS file system calls.
await Engine.StartAsync();
#if DEBUG
// Opens Windows File Manager with user file system folder and remote storage folder.
ShowTestEnvironment();
#endif
// Keep this application running until user input.
exitKey = Console.ReadKey();
}
finally
{
Engine.Dispose();
}
if (exitKey.KeyChar == 'q')
{
// Unregister during programm uninstall.
await Registrar.UnregisterAsync(SyncRootId);
log.Info($"\n\nUnregistering {Settings.UserFileSystemRootPath} sync root.");
log.Info("\nAll empty file and folder placeholders are deleted. Hydrated placeholders are converted to regular files / folders.\n");
}
else if (exitKey.KeyChar == 'Q')
{
log.Info($"\n\nUnregistering {Settings.UserFileSystemRootPath} sync root.");
log.Info("\nAll files and folders placeholders are deleted.\n");
// Unregister during programm uninstall and delete all files/folder.
await Registrar.UnregisterAsync(SyncRootId);
try
{
Directory.Delete(Settings.UserFileSystemRootPath, true);
}
catch (Exception ex)
{
log.Error($"\n{ex}");
}
}
else
{
log.Info("\n\nAll downloaded file / folder placeholders remain in file system. Restart the application to continue managing files.\n");
}
}
