/// <summary>
/// Returns MS Office lock file path if such file exists.
/// </summary>
/// <param name="msOfficeFilePath">MS Office file path.</param>
/// <returns>Lock file path.</returns>
/// <remarks>
/// mydoc.docx -> ~$mydoc.docx
/// mydocfi.docx -> ~$ydocfi.docx
/// mydocfile.docx -> ~$docfile.docx
/// mydocfile.pptx -> ~$mydocfile.pptx
/// mydocfile.ppt -> ~$mydocfile.ppt
/// mydocfile.xlsx -> ~$mydocfile.xlsx
/// mydocfile.xls -> null
/// </remarks>
private static string GetLockPathFromMsOfficePath(string msOfficeFilePath)
{
string msOfficeLockFilePath = null;
int separatorIndex = msOfficeFilePath.LastIndexOf(Path.DirectorySeparatorChar);
if ((separatorIndex != -1) && !string.IsNullOrEmpty(Path.GetExtension(msOfficeFilePath)))
{
msOfficeLockFilePath = msOfficeFilePath.Insert(separatorIndex + 1, "~$");
if (FsPath.Exists(msOfficeLockFilePath))
{
return(msOfficeLockFilePath);
}
int fileNameLength = Path.GetFileNameWithoutExtension(msOfficeFilePath).Length;
if (fileNameLength > 6)
{
int removeChars = fileNameLength == 7 ? 1 : 2;
msOfficeLockFilePath = msOfficeLockFilePath.Remove(separatorIndex + 1 + "~$".Length, removeChars);
if (FsPath.Exists(msOfficeLockFilePath))
{
return(msOfficeLockFilePath);
}
}
}
return(null);
}
/// <inheritdoc/>
public async Task OpenAsync(IOperationContext operationContext, IResultContext context)
{
Logger.LogMessage($"{nameof(IFile)}.{nameof(OpenAsync)}()", UserFileSystemPath);
// Auto-lock the file.
string userFileSystemFilePath = UserFileSystemPath;
if (Engine.ChangesProcessingEnabled && FsPath.Exists(userFileSystemFilePath))
{
if (VirtualDrive.Settings.AutoLock &&
!FsPath.AvoidAutoLock(userFileSystemFilePath) &&
!await VirtualDrive.LockManager(userFileSystemFilePath, Logger).IsLockedAsync() &&
FsPath.IsWriteLocked(userFileSystemFilePath) &&
!new PlaceholderFile(userFileSystemFilePath).IsNew(VirtualDrive))
{
RemoteStorageRawItem <IVirtualFile> remoteStorageRawItem = new RemoteStorageRawItem <IVirtualFile>(userFileSystemFilePath, VirtualDrive, Logger);
if (await remoteStorageRawItem.IsLockSupportedAsync())
{
try
{
await remoteStorageRawItem.LockAsync(LockMode.Auto);
}
catch (ClientLockFailedException ex)
{
// Lock file is blocked by a concurrent thread. This is a normal behaviour.
Logger.LogMessage(ex.Message, userFileSystemFilePath);
}
}
}
}
}
/// <inheritdoc/>
public void LogMessage(string message, string sourcePath = null, string targetPath = null)
{
string att = FsPath.Exists(sourcePath) ? FsPath.GetAttString(sourcePath) : null;
string size = FsPath.Size(sourcePath);
Log.Debug($"\n{DateTimeOffset.Now} [{Thread.CurrentThread.ManagedThreadId,2}] {componentName,-26}{message,-45} {sourcePath,-80} {size,7} {att} {targetPath}");
}
/// <inheritdoc/>
public async Task GetChildrenAsync(string pattern, IOperationContext operationContext, IFolderListingResultContext resultContext)
{
// This method has a 60 sec timeout.
// To process longer requests and reset the timout timer call one of the following:
// - resultContext.ReturnChildren() method.
// - resultContext.ReportProgress() method.
Logger.LogMessage($"IFolder.GetChildrenAsync({pattern})", UserFileSystemPath);
IVirtualFolder userFolder = await VirtualDrive.GetItemAsync <IVirtualFolder>(UserFileSystemPath, Logger);
IEnumerable <FileSystemItemMetadataExt> children = await userFolder.EnumerateChildrenAsync(pattern);
// Filtering existing files/folders. This is only required to avoid extra errors in the log.
List <IFileSystemItemMetadata> newChildren = new List <IFileSystemItemMetadata>();
foreach (FileSystemItemMetadataExt child in children)
{
string userFileSystemItemPath = Path.Combine(UserFileSystemPath, child.Name);
if (!FsPath.Exists(userFileSystemItemPath))
{
Logger.LogMessage("Creating", child.Name);
// If the file is moved/renamed and the app is not running this will help us
// to sync the file/folder to remote storage after app starts.
child.CustomData = new CustomData
{
OriginalPath = userFileSystemItemPath
}.Serialize();
newChildren.Add(child);
}
}
// To signal that the children enumeration is completed
// always call ReturnChildren(), even if the folder is empty.
resultContext.ReturnChildren(newChildren.ToArray(), newChildren.Count());
// Save ETags, the read-only attribute and all custom columns data.
foreach (FileSystemItemMetadataExt child in children)
{
string userFileSystemItemPath = Path.Combine(UserFileSystemPath, child.Name);
// Create ETags.
// ETags must correspond with a server file/folder, NOT with a client placeholder.
// It should NOT be moved/deleted/updated when a placeholder in the user file system is moved/deleted/updated.
// It should be moved/deleted when a file/folder in the remote storage is moved/deleted.
await VirtualDrive.GetETagManager(userFileSystemItemPath, Logger).SetETagAsync(child.ETag);
// Set the read-only attribute and all custom columns data.
UserFileSystemRawItem userFileSystemRawItem = VirtualDrive.GetUserFileSystemRawItem(userFileSystemItemPath, Logger);
await userFileSystemRawItem.SetLockedByAnotherUserAsync(child.LockedByAnotherUser);
await userFileSystemRawItem.SetCustomColumnsDataAsync(child.CustomProperties);
}
}
/// <summary>
/// Returns true if the file or folder is marked with Hidden or Temporaty attributes.
/// </summary>
/// <param name="path">Path to a file or folder.</param>
/// <returns>
/// True if the file or folder is marked with Hidden or Temporaty attributes.
/// Returns false if no Hidden or Temporaty attributes found or file/folder does not exists.
/// </returns>
private static bool IsHiddenOrTemp(string path)
{
if (!FsPath.Exists(path))
{
return(false);
}
FileAttributes att = File.GetAttributes(path);
return(((att & System.IO.FileAttributes.Hidden) != 0) ||
((att & System.IO.FileAttributes.Temporary) != 0));
}
/// <inheritdoc/>
public async Task MoveToCompletionAsync(IMoveCompletionContext moveCompletionContext, IResultContext resultContext)
{
string userFileSystemNewPath = this.UserFileSystemPath;
string userFileSystemOldPath = moveCompletionContext.SourcePath;
Logger.LogMessage($"{nameof(IFileSystemItem)}.{nameof(MoveToCompletionAsync)}()", userFileSystemOldPath, userFileSystemNewPath);
if (Engine.ChangesProcessingEnabled)
{
if (FsPath.Exists(userFileSystemNewPath))
{
FileSystemItemTypeEnum itemType = FsPath.GetItemType(userFileSystemNewPath);
await new RemoteStorageRawItem <TItemType>(userFileSystemNewPath, VirtualDrive, Logger).MoveToCompletionAsync();
}
}
}
/// <inheritdoc/>
public async Task CloseAsync(IOperationContext operationContext, IResultContext context)
{
// Here, if the file in the user file system is modified (not in-sync), you will send the file content,
// creation time, modification time and attributes to the remote storage.
// We also send ETag, to make sure the changes on the server, if any, are not overwritten.
Logger.LogMessage("IFile.CloseAsync()", UserFileSystemPath);
string userFileSystemFilePath = UserFileSystemPath;
// In case the file is moved it does not exist in user file system when CloseAsync() is called.
if (Engine.ChangesProcessingEnabled &&
FsPath.Exists(userFileSystemFilePath) &&
!FsPath.AvoidSync(userFileSystemFilePath))
{
// In case the file is overwritten it is converted to a regular file prior to CloseAsync().
// we need to convert it back into file/folder placeholder.
if (!PlaceholderItem.IsPlaceholder(userFileSystemFilePath))
{
PlaceholderItem.ConvertToPlaceholder(userFileSystemFilePath, false);
Logger.LogMessage("Converted to placeholder", userFileSystemFilePath);
}
try
{
if (PlaceholderItem.GetItem(userFileSystemFilePath).IsNew(VirtualDrive))
{
// Create new file in the remote storage.
await new RemoteStorageRawItem <IVirtualFile>(userFileSystemFilePath, VirtualDrive, Logger).CreateAsync();
}
else if (!PlaceholderItem.GetItem(userFileSystemFilePath).IsMoved())
{
// Send content to remote storage. Unlock if auto-locked.
await new RemoteStorageRawItem <IVirtualFile>(userFileSystemFilePath, VirtualDrive, Logger).UpdateAsync();
}
}
catch (IOException ex)
{
// Either the file is already being synced in another thread or client or server file is blocked by concurrent process.
// This is a normal behaviour.
// The file must be synched by your synchronyzation service at a later time, when the file becomes available.
Logger.LogMessage("Failed to upload file. Possibly in use by an application or blocked for synchronization in another thread:", ex.Message);
}
}
}
///<inheritdoc>
public async Task MoveToAsync(string userFileSystemNewPath, IOperationContext operationContext, IConfirmationResultContext resultContext)
{
string userFileSystemOldPath = this.UserFileSystemPath;
Logger.LogMessage($"{nameof(IFileSystemItem)}.{nameof(MoveToAsync)}()", userFileSystemOldPath, userFileSystemNewPath);
// Process move.
if (Engine.ChangesProcessingEnabled)
{
if (FsPath.Exists(userFileSystemOldPath))
{
await new RemoteStorageRawItem <TItemType>(userFileSystemOldPath, VirtualDrive, Logger).MoveToAsync(userFileSystemNewPath, resultContext);
}
}
else
{
resultContext.ReturnConfirmationResult();
}
}
/// <inheritdoc/>
public void LogError(string message, string sourcePath = null, string targetPath = null, Exception ex = null)
{
string att = FsPath.Exists(sourcePath) ? FsPath.GetAttString(sourcePath) : null;
Log.Error($"\n{DateTimeOffset.Now} [{Thread.CurrentThread.ManagedThreadId,2}] {componentName,-26}{message,-45} {sourcePath,-80} {att} ", ex);
}