/// <summary>
/// Called when a file or folder is renamed in the remote storage.
/// </summary>
/// <remarks>In this method we rename corresponding file/folder in user file system.</remarks>
private async void RenamedAsync(object sender, RenamedEventArgs e)
{
LogMessage("Renamed:", e.OldFullPath, e.FullPath);
string remoteStorageOldPath = e.OldFullPath;
string remoteStorageNewPath = e.FullPath;
try
{
string userFileSystemOldPath = Mapping.ReverseMapPath(remoteStorageOldPath);
string userFileSystemNewPath = Mapping.ReverseMapPath(remoteStorageNewPath);
// This check is only required because we can not prevent circular calls because of the simplicity of this example.
// In your real-life application you will not sent updates from server back to client that issued the update.
Thread.Sleep(2000); // This can be removed in a real-life application.
if (FsPath.Exists(userFileSystemOldPath))
{
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (await engine.ServerNotifications(userFileSystemOldPath).MoveToAsync(userFileSystemNewPath))
{
LogMessage("Renamed succesefully:", userFileSystemOldPath, userFileSystemNewPath);
}
}
await engine.CustomDataManager(userFileSystemOldPath, this).MoveToAsync(userFileSystemNewPath);
}
catch (Exception ex)
{
LogError($"{e.ChangeType} failed", remoteStorageOldPath, remoteStorageNewPath, ex);
}
}
/// <summary>
/// Called when a file or folder is created in the remote storage.
/// </summary>
/// <remarks>In this method we create a new file/folder in the user file system.</remarks>
private async void CreatedAsync(object sender, FileSystemEventArgs e)
{
LogMessage(e.ChangeType.ToString(), e.FullPath);
string remoteStoragePath = e.FullPath;
try
{
string userFileSystemPath = Mapping.ReverseMapPath(remoteStoragePath);
// This check is only required because we can not prevent circular calls because of the simplicity of this example.
// In your real-life application you will not sent updates from server back to client that issued the update.
if (!FsPath.Exists(userFileSystemPath))
{
string userFileSystemParentPath = Path.GetDirectoryName(userFileSystemPath);
// Because of the on-demand population the file or folder placeholder may not exist in the user file system
// or the folder may be offline.
FileSystemInfo remoteStorageItem = FsPath.GetFileSystemItem(remoteStoragePath);
if (remoteStorageItem != null)
{
IFileSystemItemMetadata newItemInfo = Mapping.GetUserFileSysteItemMetadata(remoteStorageItem);
if (await engine.ServerNotifications(userFileSystemParentPath).CreateAsync(new[] { newItemInfo }) > 0)
{
LogMessage($"Created succesefully", userFileSystemPath);
engine.CustomDataManager(userFileSystemPath, this).IsNew = false;
}
}
}
}
catch (Exception ex)
{
LogError($"{e.ChangeType} failed", remoteStoragePath, null, ex);
}
}
/// <summary>
/// Called when a file or folder is created in the user file system.
/// </summary>
/// <remarks>
/// This method is also called when a file is being moved in user file system, after the IFileSystem.MoveToAsync() call.
/// </remarks>
private async void CreatedAsync(object sender, FileSystemEventArgs e)
{
LogMessage($"{e.ChangeType}", e.FullPath);
string userFileSystemPath = e.FullPath;
try
{
// When a file/folder is moved this method is also called. The file/folder move is already processed in IFileSystem.MoveToAsync().
if (FsPath.Exists(userFileSystemPath) && !PlaceholderItem.IsPlaceholder(userFileSystemPath))
{
// When a new file or folder is created under sync root it is
// created as a regular file or folder. Converting to placeholder.
PlaceholderItem.ConvertToPlaceholder(userFileSystemPath, false);
LogMessage("Converted to placeholder", userFileSystemPath);
// Do not create temp MS Office, temp and hidden files in remote storage.
if (!FsPath.AvoidSync(userFileSystemPath))
{
// Create the file/folder in the remote storage.
try
{
await RemoteStorageRawItem.CreateAsync(userFileSystemPath, this);
}
catch (IOException ex)
{
LogError("Creation in remote storage failed. Possibly in use by an application", userFileSystemPath, null, ex);
}
}
}
}
catch (Exception ex)
{
LogError($"{e.ChangeType} failed", userFileSystemPath, null, ex);
}
}
/// <summary>
/// Called when a file content changed or file/folder attributes changed in the remote storage.
/// </summary>
/// <remarks>
/// In this method we update corresponding file/folder information in user file system.
/// We also dehydrate the file if it is not blocked.
/// </remarks>
private async void ChangedAsync(object sender, FileSystemEventArgs e)
{
LogMessage(e.ChangeType.ToString(), e.FullPath);
string remoteStoragePath = e.FullPath;
try
{
string userFileSystemPath = Mapping.ReverseMapPath(remoteStoragePath);
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (FsPath.Exists(userFileSystemPath))
{
FileSystemInfo remoteStorageItem = FsPath.GetFileSystemItem(remoteStoragePath);
if (!FsPath.AvoidSync(remoteStoragePath))
{
// This check is only required because we can not prevent circular calls because of the simplicity of this example.
if (!await new UserFileSystemItem(userFileSystemPath).EqualsAsync(remoteStorageItem))
{
LogMessage("Item modified:", remoteStoragePath);
await new UserFileSystemItem(userFileSystemPath).UpdateAsync(remoteStorageItem);
LogMessage("Updated succesefully:", userFileSystemPath);
}
}
}
}
catch (Exception ex)
{
LogError($"{e.ChangeType} failed:", remoteStoragePath, ex);
}
}
internal async Task ClearStateAsync()
{
if (FsPath.Exists(userFileSystemPath))
{
await SetIconAsync(false);
}
}
/// <summary>
/// Moves the item in the remote storage. This method is called by the platform.
/// To move item manually use the <see cref="MoveToAsync(string)"/> method instead.
/// </summary>
/// <param name="userFileSystemNewPath">Target path in user file system.</param>
/// <param name="resultContext">Confirms move competeion. Passed by the platform only.</param>
internal async Task MoveToAsync(string userFileSystemNewPath, IConfirmationResultContext resultContext)
{
// In this method you must either confirm or reject the move by calling call either
// IConfirmationResultContext.ReturnConfirmationResult() or IConfirmationResultContext.ReturnErrorResult().
string userFileSystemOldPath = userFileSystemPath;
try
{
if (!FsPath.IsRecycleBin(userFileSystemNewPath) && // When a file is deleted, it is moved to a Recycle Bin.
!FsPath.AvoidSync(userFileSystemOldPath) && !FsPath.AvoidSync(userFileSystemNewPath))
{
logger.LogMessage("Moving item in remote storage", userFileSystemOldPath, userFileSystemNewPath);
/*
* // Read In-Sync state before move and set after move.
* if (FsPath.Exists(userFileSystemOldPath))
* {
* inSync = PlaceholderItem.GetItem(userFileSystemOldPath).GetInSync();
* }
*/
IVirtualFileSystemItem userFileSystemItemOld = await GetItemAsync(userFileSystemOldPath);
await userFileSystemItemOld.MoveToAsync(userFileSystemNewPath);
//updateTargetOnSuccess = true;
logger.LogMessage("Moved succesefully in remote storage", userFileSystemOldPath, userFileSystemNewPath);
ETagManager eTagManager = virtualDrive.GetETagManager(userFileSystemOldPath);
if (FsPath.Exists(eTagManager.ETagFilePath))
{
await eTagManager.MoveToAsync(userFileSystemNewPath);
logger.LogMessage("Moved ETag succesefully", userFileSystemOldPath, userFileSystemNewPath);
}
}
// Confirm move.
if (resultContext != null)
{
// Calling ReturnConfirmationResult() moves file in the user file system.
logger.LogMessage("Confirming move in user file system", userFileSystemOldPath, userFileSystemNewPath);
resultContext.ReturnConfirmationResult();
// After ReturnConfirmationResult() call the MoveToCompletionAsync() method is called.
// After that, in case of a file, the file handle is closed, triggering IFile.CloseAsync() call
// and Windows File Manager move progress window is closed.
// In addition to thos, in case the target is the offline folder, the IFolder.GetChildrenAsync() method is called.
}
}
catch (Exception ex)
{
logger.LogError("Failed to move item", userFileSystemOldPath, userFileSystemNewPath, ex);
resultContext.ReturnErrorResult();
//string userFileSystemExPath = FsPath.Exists(userFileSystemNewPath) ? userFileSystemNewPath : userFileSystemOldPath;
//await virtualDrive.GetUserFileSystemRawItem(userFileSystemExPath, logger).SetUploadErrorStateAsync(ex);
}
}
/// <summary>
/// Called when a file or folder is renamed in the remote storage.
/// </summary>
/// <remarks>In this method we rename corresponding file/folder in user file system.</remarks>
private async void RenamedAsync(object sender, RenamedEventArgs e)
{
LogMessage("Renamed:", e.OldFullPath, e.FullPath);
string remoteStorageOldPath = e.OldFullPath;
string remoteStorageNewPath = e.FullPath;
try
{
string userFileSystemOldPath = Mapping.ReverseMapPath(remoteStorageOldPath);
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (FsPath.Exists(userFileSystemOldPath))
{
if (!FsPath.AvoidSync(remoteStorageOldPath) && !FsPath.AvoidSync(remoteStorageNewPath))
{
string userFileSystemNewPath = Mapping.ReverseMapPath(remoteStorageNewPath);
await new UserFileSystemItem(userFileSystemOldPath).MoveAsync(userFileSystemNewPath);
LogMessage("Renamed succesefully:", userFileSystemOldPath, userFileSystemNewPath);
}
}
}
catch (Exception ex)
{
LogError($"{e.ChangeType} failed:", $"From:{remoteStorageOldPath} To:{remoteStorageNewPath}", ex);
}
}
/// <summary>
/// Called when a file or folder attributes changed in the user file system.
/// </summary>
/// <remarks>
/// Here we monitor pinned and unpinned attributes and hydrate/dehydrate files.
/// </remarks>
private async void ChangedAsync(object sender, FileSystemEventArgs e)
{
LogMessage($"{e.ChangeType}", e.FullPath);
try
{
string userFileSystemPath = e.FullPath;
if (FsPath.Exists(userFileSystemPath) && !FsPath.AvoidSync(userFileSystemPath))
{
// Hydrate / dehydrate.
if (new UserFileSystemRawItem(userFileSystemPath).HydrationRequired())
{
LogMessage("Hydrating", userFileSystemPath);
new PlaceholderFile(userFileSystemPath).Hydrate(0, -1);
LogMessage("Hydrated succesefully", userFileSystemPath);
}
else if (new UserFileSystemRawItem(userFileSystemPath).DehydrationRequired())
{
LogMessage("Dehydrating", userFileSystemPath);
new PlaceholderFile(userFileSystemPath).Dehydrate(0, -1);
LogMessage("Dehydrated succesefully", userFileSystemPath);
}
}
}
catch (Exception ex)
{
LogError("Hydration/dehydration failed", e.FullPath, null, ex);
}
}
protected 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{DateTime.Now} [{Thread.CurrentThread.ManagedThreadId,2}] {"User File System Monitor: ",-26}{message,-45} {sourcePath,-80} {size,7} {att} {targetPath}");
}
/// <summary>
/// Recursively restores OriginalPath and the 'locked' icon.
/// </summary>
/// <param name="userFileSystemNewPath">Path in the user file system to start recursive processing.</param>
private async Task MoveToCompletionRecursiveAsync(string userFileSystemNewPath)
{
if (FsPath.IsFolder(userFileSystemNewPath))
{
if (!new DirectoryInfo(userFileSystemNewPath).Attributes.HasFlag(System.IO.FileAttributes.Offline))
{
//LogMessage("Folder offline, skipping:", userFileSystemFolderPath);
IEnumerable <string> userFileSystemChildren = Directory.EnumerateFileSystemEntries(userFileSystemNewPath, "*");
foreach (string userFileSystemChildPath in userFileSystemChildren)
{
try
{
await MoveToCompletionRecursiveAsync(userFileSystemChildPath);
}
catch (Exception ex)
{
logger.LogError("Failed to complete move", userFileSystemChildPath, null, ex);
}
}
}
}
if (FsPath.Exists(userFileSystemNewPath) && // This check is just to avoid extra error in the log.
!FsPath.IsRecycleBin(userFileSystemNewPath) && // When a file with content is deleted, it is moved to a Recycle Bin.
!FsPath.AvoidAutoLock(userFileSystemNewPath)) // No need to update temp MS Office docs.
{
// Open file to prevent reads and changes between GetFileDataSizeInfo() call and SetInSync() call.
using (WindowsFileSystemItem userFileSystemWinItem = WindowsFileSystemItem.OpenReadAttributes(userFileSystemNewPath, FileMode.Open, FileShare.None))
{
// If a file with content is deleted it is moved to a recycle bin and converted
// to a regular file, so placeholder features are not available on it, checking if a file is a placeholder.
if (/*updateTargetOnSuccess &&*/ PlaceholderItem.IsPlaceholder(userFileSystemNewPath))
{
PlaceholderItem placeholderNew = PlaceholderItem.GetItem(userFileSystemNewPath);
await virtualDrive.GetUserFileSystemRawItem(userFileSystemNewPath, logger).ClearStateAsync();
// Update OriginalPath if the item is not new.
// Required for pptx and xlsx files Save As operation.
if (!placeholderNew.IsNew(virtualDrive))
{
// Update OriginalPath, so the item does not appear as moved.
logger.LogMessage("Setting Original Path", userFileSystemNewPath);
placeholderNew.SetOriginalPath(userFileSystemNewPath);
}
// Restore the 'locked' icon.
ServerLockInfo existingLock = await virtualDrive.LockManager(userFileSystemNewPath, logger).GetLockInfoAsync();
await virtualDrive.GetUserFileSystemRawItem(userFileSystemNewPath, logger).SetLockInfoAsync(existingLock);
}
}
}
}
/// <summary>
/// Moves a file or folder placeholder in user file system.
/// </summary>
/// <param name="userFileSystemNewPath">New path in user file system.</param>
/// <remarks>
/// This method failes if the file or folder in user file system is modified (not in sync with the remote storage)
/// or if the target file exists.
/// </remarks>
public async Task MoveToAsync(string userFileSystemNewPath)
{
// Cloud Filter API does not provide a function to move a placeholder file only if it is not modified.
// The file may be modified between InSync call, Move() call and SetInSync() in this method.
try
{
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (FsPath.Exists(userFileSystemPath))
{
bool inSync = PlaceholderItem.GetItem(userFileSystemPath).GetInSync();
if (inSync)
{
string eTag = await ETag.GetETagAsync(userFileSystemPath);
ETag.DeleteETag(userFileSystemPath);
try
{
Directory.Move(userFileSystemPath, userFileSystemNewPath);
}
catch
{
await ETag.SetETagAsync(userFileSystemPath, eTag);
throw;
}
await ETag.SetETagAsync(userFileSystemNewPath, eTag);
// The file is marked as not in sync after move/rename. Marking it as in-sync.
PlaceholderItem placeholderItem = PlaceholderItem.GetItem(userFileSystemNewPath);
placeholderItem.SetInSync(true);
placeholderItem.SetOriginalPath(userFileSystemNewPath);
await new UserFileSystemRawItem(userFileSystemNewPath).ClearStateAsync();
}
if (!inSync)
{
throw new ConflictException(Modified.Client, "The item is not in-sync with the cloud.");
}
}
}
catch (Exception ex)
{
string path = FsPath.Exists(userFileSystemNewPath) ? userFileSystemNewPath : userFileSystemPath;
await new UserFileSystemRawItem(userFileSystemPath).SetDownloadErrorStateAsync(ex);
// Rethrow the exception preserving stack trace of the original exception.
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex).Throw();
}
}
internal async Task SetUploadErrorStateAsync(Exception ex)
{
if (FsPath.Exists(userFileSystemPath))
{
if (ex is ConflictException)
{
await SetConflictIconAsync(true);
}
else
{
await SetUploadPendingIconAsync(true);
}
}
}
/// <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($"{nameof(IFolder)}.{nameof(GetChildrenAsync)}({pattern})", UserFileSystemPath);
IEnumerable <FileSystemInfo> remoteStorageChildren = new DirectoryInfo(RemoteStoragePath).EnumerateFileSystemInfos(pattern);
List <IFileSystemItemMetadata> userFileSystemChildren = new List <IFileSystemItemMetadata>();
foreach (FileSystemInfo remoteStorageItem in remoteStorageChildren)
{
IFileSystemItemMetadata itemInfo = Mapping.GetUserFileSysteItemMetadata(remoteStorageItem);
string userFileSystemItemPath = Path.Combine(UserFileSystemPath, itemInfo.Name);
// Filtering existing files/folders. This is only required to avoid extra errors in the log.
if (!FsPath.Exists(userFileSystemItemPath))
{
Logger.LogMessage("Creating", userFileSystemItemPath);
userFileSystemChildren.Add(itemInfo);
}
ExternalDataManager customDataManager = Engine.CustomDataManager(userFileSystemItemPath);
// Mark this item as not new, which is required for correct MS Office saving opertions.
customDataManager.IsNew = false;
// Save ETag on the client side, to be sent to the remote storage as part of the update.
await customDataManager.ETagManager.SetETagAsync("1234567890");
}
// To signal that the children enumeration is completed
// always call ReturnChildren(), even if the folder is empty.
resultContext.ReturnChildren(userFileSystemChildren.ToArray(), userFileSystemChildren.Count());
// Show some custom column in file manager for demo purposes.
foreach (IFileSystemItemMetadata itemInfo in userFileSystemChildren)
{
string userFileSystemItemPath = Path.Combine(UserFileSystemPath, itemInfo.Name);
FileSystemItemPropertyData eTagColumn = new FileSystemItemPropertyData((int)CustomColumnIds.ETag, "1234567890");
await Engine.CustomDataManager(userFileSystemItemPath).SetCustomColumnsAsync(new [] { eTagColumn });
}
}
/// <summary>
/// Moves a file or folder placeholder in user file system.
/// </summary>
/// <param name="userFileSystemNewPath">New path in user file system.</param>
/// <remarks>
/// This method failes if the file or folder in user file system is modified (not in sync with the remote storage)
/// or if the target file exists.
/// </remarks>
/// <returns>True if the item was moved. False - otherwise.</returns>
public async Task <bool> MoveToAsync(string userFileSystemNewPath)
{
// Cloud Filter API does not provide a function to move a placeholder file only if it is not modified.
// The file may be modified between InSync call, Move() call and SetInSync() in this method.
bool itemMoved = false;
try
{
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (FsPath.Exists(userFileSystemPath))
{
bool inSync = PlaceholderItem.GetItem(userFileSystemPath).GetInSync();
if (inSync)
{
logger.LogMessage("Moving ETag", userFileSystemPath, userFileSystemNewPath);
await eTagManager.MoveToAsync(userFileSystemNewPath);
logger.LogMessage("Moving item", userFileSystemPath, userFileSystemNewPath);
await virtualDrive.Engine.ServerNotifications(userFileSystemPath).MoveToAsync(userFileSystemNewPath);
// The file is marked as not in sync after move/rename. Marking it as in-sync.
PlaceholderItem placeholderItem = PlaceholderItem.GetItem(userFileSystemNewPath);
placeholderItem.SetInSync(true);
placeholderItem.SetOriginalPath(userFileSystemNewPath);
await virtualDrive.GetUserFileSystemRawItem(userFileSystemNewPath, logger).ClearStateAsync();
itemMoved = true;
}
if (!inSync)
{
throw new ConflictException(Modified.Client, "The item is not in-sync with the cloud.");
}
}
}
catch (Exception ex)
{
string userFileSystemExPath = FsPath.Exists(userFileSystemNewPath) ? userFileSystemNewPath : userFileSystemPath;
await virtualDrive.GetUserFileSystemRawItem(userFileSystemExPath, logger).SetDownloadErrorStateAsync(ex);
// Rethrow the exception preserving stack trace of the original exception.
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex).Throw();
}
return(itemMoved);
}
//$>
/// <summary>
/// Deletes a file or folder placeholder in user file system.
/// </summary>
/// <remarks>
/// This method throws <see cref="ConflictException"/> if the file or folder or any file or folder
/// in the folder hierarchy being deleted in user file system is modified (not in sync with the remote storage).
/// </remarks>
/// <returns>True if the file was deleted. False - otherwise.</returns>
public async Task <bool> DeleteAsync()
{
// Cloud Filter API does not provide a function to delete a placeholder file only if it is not modified.
// Here we check that the file is not modified in user file system, using GetInSync() call.
// To avoid the file modification between GetInSync() call and Delete() call we
// open it without FileShare.Write flag.
try
{
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (FsPath.Exists(userFileSystemPath))
{
using (WindowsFileSystemItem userFileSystemWinItem = WindowsFileSystemItem.Open(userFileSystemPath, (FileAccess)0, FileMode.Open, FileShare.Read | FileShare.Delete))
{
if (PlaceholderItem.GetInSync(userFileSystemWinItem.SafeHandle))
{
if (FsPath.IsFile(userFileSystemPath))
{
File.Delete(userFileSystemPath);
}
else
{
Directory.Delete(userFileSystemPath, true);
}
// Delete ETag
ETag.DeleteETag(userFileSystemPath);
return(true);
}
else
{
throw new ConflictException(Modified.Client, "The item is not in-sync with the cloud.");
}
}
}
}
catch (Exception ex)
{
await SetDownloadErrorStateAsync(ex);
// Rethrow the exception preserving stack trace of the original exception.
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex).Throw();
}
return(false);
}
private async Task SetDownloadErrorStateAsync(Exception ex)
{
if (FsPath.Exists(userFileSystemPath))
{
if (ex is ConflictException)
{
await SetConflictIconAsync(true);
}
if (ex is ExistsException)
{
await SetConflictIconAsync(true);
}
else
{
// Could be BlockedException or other exception.
await SetDownloadPendingIconAsync(true);
}
}
}
/// <summary>
/// Updates information about the file or folder placeholder in the user file system.
/// This method automatically hydrates and dehydrate files.
/// </summary>
/// <remarks>This method failes if the file or folder in user file system is modified (not in-sync with the remote storage).</remarks>
/// <param name="itemInfo">New file or folder info.</param>
/// <returns>True if the file was updated. False - otherwise.</returns>
public async Task <bool> UpdateAsync(IFileSystemItemMetadata itemInfo)
{
FileSystemItemMetadataExt itemInfoExt = itemInfo as FileSystemItemMetadataExt ?? throw new NotImplementedException($"{nameof(FileSystemItemMetadataExt)}");
try
{
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (FsPath.Exists(userFileSystemPath))
{
PlaceholderItem placeholderItem = PlaceholderItem.GetItem(userFileSystemPath);
// To be able to update the item we need to remove the read-only attribute.
if ((FsPath.GetFileSystemItem(userFileSystemPath).Attributes | System.IO.FileAttributes.ReadOnly) != 0)
{
FsPath.GetFileSystemItem(userFileSystemPath).Attributes &= ~System.IO.FileAttributes.ReadOnly;
}
// Dehydrate/hydrate the file, update file size, custom data, creation date, modification date, attributes.
await virtualDrive.Engine.ServerNotifications(userFileSystemPath).UpdateAsync(itemInfoExt);
// Set ETag.
await eTagManager.SetETagAsync(itemInfoExt.ETag);
// Clear icon.
//await ClearStateAsync();
// Set the read-only attribute and all custom columns data.
await SetLockedByAnotherUserAsync(itemInfoExt.LockedByAnotherUser);
await SetCustomColumnsDataAsync(itemInfoExt.CustomProperties);
return(true);
}
}
catch (Exception ex)
{
await SetDownloadErrorStateAsync(ex);
// Rethrow the exception preserving stack trace of the original exception.
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex).Throw();
}
return(false);
}
/// <summary>
/// Called when a file or folder attributes changed in the user file system.
/// </summary>
/// <remarks>
/// Here we monitor pinned and unpinned attributes and hydrate/dehydrate files.
/// </remarks>
private async void ChangedAsync(object sender, FileSystemEventArgs e)
{
LogMessage($"{e.ChangeType}", e.FullPath);
try
{
string userFileSystemPath = e.FullPath;
if (FsPath.Exists(userFileSystemPath))
{
bool?hydrated = await new UserFileSystemItem(userFileSystemPath).UpdateHydrationAsync();
if (hydrated != null)
{
string hydrationDescrition = (bool)hydrated ? "Hydrated" : "Dehydrated";
LogMessage($"{hydrationDescrition} succesefully:", userFileSystemPath);
}
}
}
catch (Exception ex)
{
LogError("Hydration/dehydration failed:", e.FullPath, ex);
}
}
//$>
//$<PlaceholderItem.SetItemInfo
/// <summary>
/// Updates information about the file or folder placeholder in the user file system.
/// This method automatically hydrates and dehydrate files.
/// </summary>
/// <remarks>This method failes if the file or folder in user file system is modified (not in-sync with the remote storage).</remarks>
/// <param name="itemInfo">New file or folder info.</param>
/// <returns>True if the file was updated. False - otherwise.</returns>
public async Task <bool> UpdateAsync(FileSystemItemBasicInfo itemInfo)
{
try
{
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (FsPath.Exists(userFileSystemPath))
{
PlaceholderItem placeholderItem = PlaceholderItem.GetItem(userFileSystemPath);
// To be able to update the item we need to remove the read-only attribute.
if ((FsPath.GetFileSystemItem(userFileSystemPath).Attributes | System.IO.FileAttributes.ReadOnly) != 0)
{
FsPath.GetFileSystemItem(userFileSystemPath).Attributes &= ~System.IO.FileAttributes.ReadOnly;
}
// Dehydrate/hydrate the file, update file size, custom data, creation date, modification date, attributes.
placeholderItem.SetItemInfo(itemInfo);
// Set ETag.
await ETag.SetETagAsync(userFileSystemPath, itemInfo.ETag);
// Clear icon.
//await ClearStateAsync();
// Set the "locked by another user" icon and all custom columns data.
await SetLockedByAnotherUserAsync(itemInfo.LockedByAnotherUser);
await SetCustomColumnsDataAsync(itemInfo.CustomProperties);
return(true);
}
}
catch (Exception ex)
{
await SetDownloadErrorStateAsync(ex);
// Rethrow the exception preserving stack trace of the original exception.
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex).Throw();
}
return(false);
}
/// <summary>
/// Completes move. This method is called by the platform.
/// To move item manually use the <see cref="MoveToAsync(string)"/> method instead.
/// Sets In-Sync state based on file content changes,
/// Updates OriginalPath so the file does not appear as moved.
/// </summary>
/// <returns></returns>
internal async Task MoveToCompletionAsync()
{
string userFileSystemNewPath = userFileSystemPath;
if (FsPath.Exists(userFileSystemNewPath) && // This check is just to avoid extra error in the log.
!FsPath.IsRecycleBin(userFileSystemNewPath) && // When a file with content is deleted, it is moved to a Recycle Bin.
!FsPath.AvoidAutoLock(userFileSystemNewPath)) // No need to update temp MS Office docs.
{
// Open file to prevent reads and changes between GetFileDataSizeInfo() call and SetInSync() call.
//using (WindowsFileSystemItem userFileSystemWinItem = WindowsFileSystemItem.OpenReadAttributes(userFileSystemNewPath, FileMode.Open, FileShare.None))
{
// If a file with content is deleted it is moved to a recycle bin and converted
// to a regular file, so placeholder features are not available on it, checking if a file is a placeholder.
if (/*updateTargetOnSuccess &&*/ PlaceholderItem.IsPlaceholder(userFileSystemNewPath))
{
PlaceholderItem placeholderNew = PlaceholderItem.GetItem(userFileSystemNewPath);
// Restore In-sync state.
/*
* if (inSync != null)
* {
* placeholderNew.SetInSync(inSync.Value);
* }
* else
*/
if (((placeholderNew is PlaceholderFile) && ((PlaceholderFile)placeholderNew).GetFileDataSizeInfo().ModifiedDataSize == 0) ||
(placeholderNew is PlaceholderFolder))
{
logger.LogMessage("Setting In-Sync state", userFileSystemNewPath);
placeholderNew.SetInSync(true);
}
}
}
// Recursively restore OriginalPath and the 'locked' icon.
await MoveToCompletionRecursiveAsync(userFileSystemNewPath);
}
}
/// <summary>
/// Called when a file or folder is deleted in the remote storage.
/// </summary>
/// <remarks>In this method we delete corresponding file/folder in user file system.</remarks>
private async void DeletedAsync(object sender, FileSystemEventArgs e)
{
LogMessage(e.ChangeType.ToString(), e.FullPath);
string remoteStoragePath = e.FullPath;
try
{
string userFileSystemPath = Mapping.ReverseMapPath(remoteStoragePath);
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (FsPath.Exists(userFileSystemPath))
{
if (!FsPath.AvoidSync(remoteStoragePath))
{
await new UserFileSystemItem(userFileSystemPath).DeleteAsync();
LogMessage("Deleted succesefully:", userFileSystemPath);
}
}
}
catch (Exception ex)
{
LogError($"{e.ChangeType} failed:", remoteStoragePath, ex);
}
}
/// <summary>
/// Called when a file content changed or file/folder attributes changed in the remote storage.
/// </summary>
/// <remarks>
/// In this method we update corresponding file/folder information in user file system.
/// We also dehydrate the file if it is not blocked.
/// </remarks>
private async void ChangedAsync(object sender, FileSystemEventArgs e)
{
LogMessage(e.ChangeType.ToString(), e.FullPath);
string remoteStoragePath = e.FullPath;
try
{
// We do not want to sync MS Office temp files, etc. from remote storage.
if (!FsPath.AvoidSync(remoteStoragePath))
{
string userFileSystemPath = Mapping.ReverseMapPath(remoteStoragePath);
// Because of the on-demand population the file or folder placeholder may not exist in the user file system.
if (FsPath.Exists(userFileSystemPath))
{
FileSystemInfo remoteStorageItem = FsPath.GetFileSystemItem(remoteStoragePath);
// This check is only required because we can not prevent circular calls because of the simplicity of this example.
// In your real-life application you will not sent updates from server back to client that issued the update.
FileSystemItemBasicInfo itemInfo = Mapping.GetUserFileSysteItemBasicInfo(remoteStorageItem);
if (!await ETag.ETagEqualsAsync(userFileSystemPath, itemInfo))
{
await new UserFileSystemRawItem(userFileSystemPath).UpdateAsync(itemInfo);
LogMessage("Updated succesefully", userFileSystemPath);
}
// Update "locked by another user" icon.
await new UserFileSystemRawItem(userFileSystemPath).SetLockedByAnotherUserAsync(itemInfo.LockedByAnotherUser);
}
}
}
catch (Exception ex)
{
LogError($"{e.ChangeType} failed", remoteStoragePath, null, ex);
}
}
internal async Task MoveToAsync(string userFileSystemNewPath, IConfirmationResultContext resultContext = null)
{
string userFileSystemOldPath = userFileSystemPath;
try
{
bool? inSync = null;
bool updateTargetOnSuccess = false;
string eTag = null;
try
{
if (!FsPath.IsRecycleBin(userFileSystemNewPath) && // When a file is deleted, it is moved to a Recycle Bin.
!FsPath.AvoidSync(userFileSystemOldPath) && !FsPath.AvoidSync(userFileSystemNewPath))
{
logger.LogMessage("Moving item in remote storage", userFileSystemOldPath, userFileSystemNewPath);
// Read In-Sync state before move and set after move
if (FsPath.Exists(userFileSystemOldPath))
{
inSync = PlaceholderItem.GetItem(userFileSystemOldPath).GetInSync();
}
eTag = await ETag.GetETagAsync(userFileSystemOldPath);
ETag.DeleteETag(userFileSystemOldPath);
IUserFileSystemItem userFileSystemItemOld = await virtualDrive.GetItemAsync <IUserFileSystemItem>(userFileSystemOldPath);
await userFileSystemItemOld.MoveToAsync(userFileSystemNewPath);
updateTargetOnSuccess = true;
logger.LogMessage("Moved succesefully in remote storage", userFileSystemOldPath, userFileSystemNewPath);
}
}
finally
{
if (resultContext != null)
{
resultContext.ReturnConfirmationResult();
}
// This check is just to avoid extra error in the log.
if (FsPath.Exists(userFileSystemNewPath))
{
// Open file to preven reads and changes between GetFileDataSizeInfo() call and SetInSync() call.
using (WindowsFileSystemItem userFileSystemWinItem = WindowsFileSystemItem.OpenReadAttributes(userFileSystemNewPath, FileMode.Open, FileShare.None))
{
if ((eTag != null) && PlaceholderItem.IsPlaceholder(userFileSystemNewPath))
{
await ETag.SetETagAsync(userFileSystemNewPath, eTag);
}
// If a file with content is deleted it is moved to a recycle bin and converted
// to a regular file, so placeholder features are not available on it, checking if a file is a placeholder.
if (updateTargetOnSuccess && PlaceholderItem.IsPlaceholder(userFileSystemNewPath))
{
PlaceholderItem placeholderNew = PlaceholderItem.GetItem(userFileSystemNewPath);
// Update OriginalPath, so the item does not appear as moved.
placeholderNew.SetOriginalPath(userFileSystemNewPath);
if (inSync != null)
{
placeholderNew.SetInSync(inSync.Value);
}
else if ((placeholderNew is PlaceholderFile) && ((PlaceholderFile)placeholderNew).GetFileDataSizeInfo().ModifiedDataSize == 0)
{
placeholderNew.SetInSync(true);
}
await new UserFileSystemRawItem(userFileSystemNewPath).ClearStateAsync();
}
}
}
}
}
catch (Exception ex)
{
string userFileSystemPath = FsPath.Exists(userFileSystemNewPath) ? userFileSystemNewPath : userFileSystemOldPath;
await new UserFileSystemRawItem(userFileSystemPath).SetUploadErrorStateAsync(ex);
// Rethrow the exception preserving stack trace of the original exception.
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex).Throw();
}
}
/// <summary>
/// Recursively synchronizes all files and folders from server to client.
/// Synchronizes only folders already loaded into the user file system.
/// </summary>
/// <param name="userFileSystemFolderPath">Folder path in user file system.</param>
internal async Task SyncronizeFolderAsync(string userFileSystemFolderPath)
{
// In case of on-demand loading the user file system contains only a subset of the server files and folders.
// Here we sync folder only if its content already loaded into user file system (folder is not offline).
// The folder content is loaded inside IFolder.GetChildrenAsync() method.
if (new DirectoryInfo(userFileSystemFolderPath).Attributes.HasFlag(System.IO.FileAttributes.Offline))
{
// LogMessage("Folder offline, skipping:", userFileSystemFolderPath);
return;
}
IEnumerable <string> userFileSystemChildren = Directory.EnumerateFileSystemEntries(userFileSystemFolderPath, "*");
//LogMessage("Synchronizing:", userFileSystemFolderPath);
IEnumerable <FileSystemItemBasicInfo> remoteStorageChildrenItems = await new UserFolder(userFileSystemFolderPath).EnumerateChildrenAsync("*");
// Create new files/folders in the user file system.
string remoteStorageFolderPath = Mapping.MapPath(userFileSystemFolderPath);
foreach (FileSystemItemBasicInfo remoteStorageItem in remoteStorageChildrenItems)
{
string userFileSystemPath = Path.Combine(userFileSystemFolderPath, remoteStorageItem.Name);
try
{
// We do not want to sync MS Office temp files, etc. from remote storage.
// We also do not want to create MS Office files during transactional save in user file system.
string remoteStorageItemFullPath = Path.Combine(remoteStorageFolderPath, remoteStorageItem.Name);
if (!FsPath.AvoidSync(remoteStorageItemFullPath) && !FsPath.AvoidSync(userFileSystemPath))
{
if (!FsPath.Exists(userFileSystemPath))
{
LogMessage($"Creating", userFileSystemPath);
await UserFileSystemRawItem.CreateAsync(userFileSystemFolderPath, new[] { remoteStorageItem });
LogMessage($"Created succesefully", userFileSystemPath);
}
}
}
catch (Exception ex)
{
LogError("Creation failed", userFileSystemPath, null, ex);
}
}
// Update files/folders in user file system and sync subfolders.
userFileSystemChildren = Directory.EnumerateFileSystemEntries(userFileSystemFolderPath, "*");
foreach (string userFileSystemPath in userFileSystemChildren)
{
try
{
string itemName = Path.GetFileName(userFileSystemPath);
string remoteStoragePath = Mapping.MapPath(userFileSystemPath);
FileSystemItemBasicInfo remoteStorageItem = remoteStorageChildrenItems.FirstOrDefault(x => x.Name.Equals(itemName, StringComparison.InvariantCultureIgnoreCase));
if (!FsPath.AvoidSync(userFileSystemPath) && !FsPath.AvoidSync(remoteStoragePath))
{
if (remoteStorageItem == null)
{
if (PlaceholderItem.GetItem(userFileSystemPath).GetInSync())
{
// Delete the file/folder in user file system.
LogMessage("Deleting item", userFileSystemPath);
await new UserFileSystemRawItem(userFileSystemPath).DeleteAsync();
LogMessage("Deleted succesefully", userFileSystemPath);
}
}
else
{
if (PlaceholderItem.GetItem(userFileSystemPath).GetInSync() &&
!await ETag.ETagEqualsAsync(userFileSystemPath, remoteStorageItem))
{
// User file system <- remote storage update.
LogMessage("Item modified", remoteStoragePath);
await new UserFileSystemRawItem(userFileSystemPath).UpdateAsync(remoteStorageItem);
LogMessage("Updated succesefully", userFileSystemPath);
}
// Update "locked by another user" icon.
if (PlaceholderItem.GetItem(userFileSystemPath).GetInSync())
{
await new UserFileSystemRawItem(userFileSystemPath).SetLockedByAnotherUserAsync(remoteStorageItem.LockedByAnotherUser);
}
// Hydrate / dehydrate the file.
if (new UserFileSystemRawItem(userFileSystemPath).HydrationRequired())
{
LogMessage("Hydrating", userFileSystemPath);
new PlaceholderFile(userFileSystemPath).Hydrate(0, -1);
LogMessage("Hydrated succesefully", userFileSystemPath);
}
else if (new UserFileSystemRawItem(userFileSystemPath).DehydrationRequired())
{
LogMessage("Dehydrating", userFileSystemPath);
new PlaceholderFile(userFileSystemPath).Dehydrate(0, -1);
LogMessage("Dehydrated succesefully", userFileSystemPath);
}
}
}
}
catch (Exception ex)
{
LogError("Update failed", userFileSystemPath, null, ex);
}
// Synchronize subfolders.
try
{
if (Directory.Exists(userFileSystemPath))
{
await SyncronizeFolderAsync(userFileSystemPath);
}
}
catch (Exception ex)
{
LogError("Folder sync failed:", userFileSystemPath, null, ex);
}
}
}
protected void LogError(string message, string sourcePath, Exception ex)
{
string att = FsPath.Exists(sourcePath) ? FsPath.GetAttString(sourcePath) : null;
log.Error($"\n{DateTime.Now} [{Thread.CurrentThread.ManagedThreadId,2}] {"User File System Monitor: ",-26}{message,-45} {sourcePath,-80} {att} ", ex);
}
/// <inheritdoc/>
public async Task GetChildrenAsync(string pattern, IOperationContext operationContext, IFolderListingResultContext resultContext)
{
// This method has a 60 sec timeout.
// To process longer requests and reset the timout timer call one of the following:
// - resultContext.ReturnChildren() method.
// - resultContext.ReportProgress() method.
Logger.LogMessage($"{nameof(IFolder)}.{nameof(GetChildrenAsync)}({pattern})", UserFileSystemPath);
IHierarchyItemAsync[] remoteStorageChildren = null;
// Retry the request in case the log-in dialog is shown.
try
{
remoteStorageChildren = await Program.DavClient.GetChildrenAsync(new Uri(RemoteStoragePath), false);
}
catch (ITHit.WebDAV.Client.Exceptions.Redirect302Exception)
{
remoteStorageChildren = await Program.DavClient.GetChildrenAsync(new Uri(RemoteStoragePath), false);
}
List <FileSystemItemMetadataExt> userFileSystemChildren = new List <FileSystemItemMetadataExt>();
foreach (IHierarchyItemAsync remoteStorageItem in remoteStorageChildren)
{
FileSystemItemMetadataExt itemInfo = Mapping.GetUserFileSystemItemMetadata(remoteStorageItem);
string userFileSystemItemPath = Path.Combine(UserFileSystemPath, itemInfo.Name);
// Filtering existing files/folders. This is only required to avoid extra errors in the log.
if (!FsPath.Exists(userFileSystemItemPath))
{
Logger.LogMessage("Creating", userFileSystemItemPath);
userFileSystemChildren.Add(itemInfo);
}
ExternalDataManager customDataManager = Engine.CustomDataManager(userFileSystemItemPath);
// Mark this item as not new, which is required for correct MS Office saving opertions.
customDataManager.IsNew = false;
}
// To signal that the children enumeration is completed
// always call ReturnChildren(), even if the folder is empty.
resultContext.ReturnChildren(userFileSystemChildren.ToArray(), userFileSystemChildren.Count());
// Save ETags, the read-only attribute and all custom columns data.
foreach (FileSystemItemMetadataExt child in userFileSystemChildren)
{
string userFileSystemItemPath = Path.Combine(UserFileSystemPath, child.Name);
ExternalDataManager customDataManager = Engine.CustomDataManager(userFileSystemItemPath);
// Save ETag on the client side, to be sent to the remote storage as part of the update.
// Setting ETag also marks an item as not new.
// 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 customDataManager.ETagManager.SetETagAsync(child.ETag);
// Set the read-only attribute and all custom columns data.
await customDataManager.SetLockedByAnotherUserAsync(child.LockedByAnotherUser);
await customDataManager.SetCustomColumnsAsync(child.CustomProperties);
}
}
/// <summary>
/// Recursively synchronizes all files and folders from server to client.
/// Synchronizes only folders already loaded into the user file system.
/// </summary>
/// <param name="userFileSystemFolderPath">Folder path in user file system.</param>
internal async Task SyncronizeFolderAsync(string userFileSystemFolderPath)
{
// In case of on-demand loading the user file system contains only a subset of the server files and folders.
// Here we sync folder only if its content already loaded into user file system (folder is not offline).
// The folder content is loaded inside IFolder.GetChildrenAsync() method.
if (new DirectoryInfo(userFileSystemFolderPath).Attributes.HasFlag(System.IO.FileAttributes.Offline))
{
// LogMessage("Folder offline, skipping:", userFileSystemFolderPath);
return;
}
IEnumerable <string> userFileSystemChildren = Directory.EnumerateFileSystemEntries(userFileSystemFolderPath, "*");
//LogMessage("Synchronizing:", userFileSystemFolderPath);
IVirtualFolder userFolder = await virtualDrive.GetItemAsync <IVirtualFolder>(userFileSystemFolderPath, this);
IEnumerable <FileSystemItemMetadataExt> remoteStorageChildrenItems = await userFolder.EnumerateChildrenAsync("*");
// Create new files/folders in the user file system.
foreach (FileSystemItemMetadataExt remoteStorageItem in remoteStorageChildrenItems)
{
string userFileSystemPath = Path.Combine(userFileSystemFolderPath, remoteStorageItem.Name);
try
{
// We do not want to sync MS Office temp files, etc. from remote storage.
// We also do not want to create MS Office files during transactional save in user file system.
if (!FsPath.AvoidSync(remoteStorageItem.Name) && !FsPath.AvoidSync(userFileSystemPath))
{
if (!FsPath.Exists(userFileSystemPath))
{
LogMessage($"Creating", userFileSystemPath);
await virtualDrive.GetUserFileSystemRawItem(userFileSystemFolderPath, this).CreateAsync(new[] { remoteStorageItem });
LogMessage($"Created succesefully", userFileSystemPath);
}
}
}
catch (Exception ex)
{
LogError("Creation failed", userFileSystemPath, null, ex);
}
}
// Update files/folders in user file system and sync subfolders.
userFileSystemChildren = Directory.EnumerateFileSystemEntries(userFileSystemFolderPath, "*");
foreach (string userFileSystemPath in userFileSystemChildren)
{
try
{
string itemName = Path.GetFileName(userFileSystemPath);
FileSystemItemMetadataExt remoteStorageItem = remoteStorageChildrenItems.FirstOrDefault(x => x.Name.Equals(itemName, StringComparison.InvariantCultureIgnoreCase));
if (!FsPath.AvoidSync(userFileSystemPath))
{
UserFileSystemRawItem userFileSystemRawItem = virtualDrive.GetUserFileSystemRawItem(userFileSystemPath, this);
if (remoteStorageItem == null)
{
if (PlaceholderItem.GetItem(userFileSystemPath).GetInSync()
//&& !PlaceholderItem.GetItem(userFileSystemPath).IsNew(virtualDrive) // Extra check to protect from deletion files that were deleted becuse of incorrect folder merging operation.
)
{
// Delete the file/folder in user file system.
LogMessage("Deleting item", userFileSystemPath);
await userFileSystemRawItem.DeleteAsync();
LogMessage("Deleted succesefully", userFileSystemPath);
}
}
else
{
if (PlaceholderItem.GetItem(userFileSystemPath).GetInSync() &&
!await virtualDrive.GetETagManager(userFileSystemPath).ETagEqualsAsync(remoteStorageItem))
{
// User file system <- remote storage update.
LogMessage("Remote item modified", userFileSystemPath);
await userFileSystemRawItem.UpdateAsync(remoteStorageItem);
LogMessage("Updated succesefully", userFileSystemPath);
}
// Set the read-only attribute and all custom columns data.
if (PlaceholderItem.GetItem(userFileSystemPath).GetInSync())
{
await userFileSystemRawItem.SetLockedByAnotherUserAsync(remoteStorageItem.LockedByAnotherUser);
await userFileSystemRawItem.SetCustomColumnsDataAsync(remoteStorageItem.CustomProperties);
}
// Hydrate / dehydrate the file.
if (userFileSystemRawItem.HydrationRequired())
{
LogMessage("Hydrating", userFileSystemPath);
try
{
new PlaceholderFile(userFileSystemPath).Hydrate(0, -1);
LogMessage("Hydrated succesefully", userFileSystemPath);
}
catch (FileLoadException)
{
// Typically this happens if another thread already hydrating the file.
LogMessage("Failed to hydrate. The file is blocked.", userFileSystemPath);
}
}
else if (userFileSystemRawItem.DehydrationRequired())
{
LogMessage("Dehydrating", userFileSystemPath);
new PlaceholderFile(userFileSystemPath).Dehydrate(0, -1);
LogMessage("Dehydrated succesefully", userFileSystemPath);
}
}
}
}
catch (Exception ex)
{
LogError("Update failed", userFileSystemPath, null, ex);
}
// Synchronize subfolders.
try
{
if (Directory.Exists(userFileSystemPath))
{
await SyncronizeFolderAsync(userFileSystemPath);
}
}
catch (Exception ex)
{
LogError("Folder sync failed:", userFileSystemPath, null, ex);
}
}
}
/// <summary>
/// Recursively synchronizes all files and folders with the server.
/// Synchronizes only folders already loaded into the user file system.
/// </summary>
/// <param name="userFileSystemFolderPath">Folder path in user file system.</param>
private async Task SyncronizeFolderAsync(string userFileSystemFolderPath)
{
// In case of on-demand loading the user file system contains only a subset of the server files and folders.
// Here we sync folder only if its content already loaded into user file system (folder is not offline).
// The folder content is loaded inside IFolder.GetChildrenAsync() method.
if (new DirectoryInfo(userFileSystemFolderPath).Attributes.HasFlag(System.IO.FileAttributes.Offline))
{
LogMessage("Folder offline, skipping:", userFileSystemFolderPath);
return;
}
IEnumerable <string> userFileSystemChildren = Directory.EnumerateFileSystemEntries(userFileSystemFolderPath, "*");
LogMessage("Synchronizing:", userFileSystemFolderPath);
string remoteStorageFolderPath = Mapping.MapPath(userFileSystemFolderPath);
IEnumerable <FileSystemInfo> remoteStorageChildrenItems = new DirectoryInfo(remoteStorageFolderPath).EnumerateFileSystemInfos("*");
// Delete files/folders in user file system.
foreach (string userFileSystemPath in userFileSystemChildren)
{
try
{
string remoteStoragePath = Mapping.MapPath(userFileSystemPath);
FileSystemInfo remoteStorageItem = remoteStorageChildrenItems.FirstOrDefault(x => x.FullName.Equals(remoteStoragePath, StringComparison.InvariantCultureIgnoreCase));
if (remoteStorageItem == null)
{
LogMessage("Deleting item:", userFileSystemPath);
await new UserFileSystemItem(userFileSystemPath).DeleteAsync();
LogMessage("Deleted succesefully:", userFileSystemPath);
}
}
catch (Exception ex)
{
LogError("Delete failed:", userFileSystemPath, ex);
}
}
// Create new files/folders in user file system.
foreach (FileSystemInfo remoteStorageItem in remoteStorageChildrenItems)
{
try
{
string userFileSystemPath = Mapping.ReverseMapPath(remoteStorageItem.FullName);
if (!FsPath.Exists(userFileSystemPath))
{
LogMessage("Creating new item:", userFileSystemPath);
await UserFileSystemItem.CreateAsync(userFileSystemFolderPath, remoteStorageItem);
LogMessage("Created succesefully:", userFileSystemPath);
}
}
catch (Exception ex)
{
LogError("Creation failed:", remoteStorageItem.FullName, ex);
}
}
// Update files/folders in user file system and sync subfolders.
userFileSystemChildren = Directory.EnumerateFileSystemEntries(userFileSystemFolderPath, "*");
foreach (string userFileSystemPath in userFileSystemChildren)
{
try
{
string remoteStoragePath = Mapping.MapPath(userFileSystemPath);
FileSystemInfo remoteStorageItem = remoteStorageChildrenItems.FirstOrDefault(x => x.FullName.Equals(remoteStoragePath, StringComparison.InvariantCultureIgnoreCase));
// The item was deleted or moved/renamed on the server, but it may still exists in the user file system.
// This is just to avoid extra exceptions in the log.
if (remoteStorageItem == null)
{
continue;
}
// Update existing files/folders info.
if (!await new UserFileSystemItem(userFileSystemPath).EqualsAsync(remoteStorageItem))
{
LogMessage("Item modified:", remoteStoragePath);
await new UserFileSystemItem(userFileSystemPath).UpdateAsync(remoteStorageItem);
LogMessage("Updated succesefully:", userFileSystemPath);
}
// Hydrate / dehydrate the file.
else
{
bool?hydrated = await new UserFileSystemItem(userFileSystemPath).UpdateHydrationAsync();
if (hydrated != null)
{
string hydrationDescrition = (bool)hydrated ? "Hydrated" : "Dehydrated";
LogMessage($"{hydrationDescrition} succesefully:", userFileSystemPath);
}
}
}
catch (Exception ex)
{
LogError("Update failed:", userFileSystemPath, ex);
}
// Synchronize subfolders.
try
{
if (FsPath.IsFolder(userFileSystemPath))
{
await SyncronizeFolderAsync(userFileSystemPath);
}
}
catch (Exception ex)
{
LogError("Folder sync failed:", userFileSystemPath, ex);
}
}
}
