/// <summary> /// Creates or updates this item in the remote storage. /// </summary> /// <param name="remoteStorageUri">Uri of the file to be created or updated in the remote storage.</param> /// <param name="newInfo">New information about the file or folder, such as modification date, attributes, custom data, etc.</param> /// <param name="mode">Specifies if a new file should be created or existing file should be updated.</param> /// <param name="content">New file content or null if the file content is not modified.</param> /// <param name="eTagOld">The ETag to be sent to the remote storage as part of the update request to make sure the content is not overwritten.</param> /// <param name="lockInfo">Information about the lock. Caller passes null if the item is not locked.</param> /// <returns>The new ETag returned from the remote storage.</returns> protected static async Task <string> CreateOrUpdateFileAsync( Uri remoteStorageUri, IFileSystemItemMetadata newInfo, FileMode mode, Stream content = null, string eTagOld = null, ServerLockInfo lockInfo = null) { string eTagNew = null; if (content != null || mode == FileMode.CreateNew) { long contentLength = content != null ? content.Length : 0; IWebRequestAsync request = await Program.DavClient.GetFileWriteRequestAsync( remoteStorageUri, null, contentLength, 0, -1, lockInfo?.LockToken, eTagOld); // Update remote storage file content. using (Stream davContentStream = await request.GetRequestStreamAsync()) { if (content != null) { await content.CopyToAsync(davContentStream); } // Get the new ETag returned by the server (if any). // We return the new ETag to the Engine to be stored with the file unlil the next update. IWebResponseAsync response = await request.GetResponseAsync(); eTagNew = response.Headers["ETag"]; response.Close(); } } return(eTagNew); }
/// <inheritdoc/> public async Task WriteAsync(IFileMetadata fileMetadata, Stream content = null) { if (MsOfficeHelper.IsMsOfficeLocked(UserFileSystemPath)) // Required for PowerPoint. It does not block the for writing. { throw new ClientLockFailedException("The file is blocked for writing."); } Logger.LogMessage($"{nameof(IFile)}.{nameof(WriteAsync)}()", UserFileSystemPath); ExternalDataManager customDataManager = Engine.CustomDataManager(UserFileSystemPath); // Send the ETag to the server as part of the update to ensure the file in the remote storge is not modified since last read. string oldEtag = await customDataManager.ETagManager.GetETagAsync(); // Send the lock-token to the server as part of the update. string lockToken = (await customDataManager.LockManager.GetLockInfoAsync())?.LockToken; if (content != null) { long contentLength = content != null ? content.Length : 0; IWebRequestAsync request = await Program.DavClient.GetFileWriteRequestAsync( new Uri(RemoteStoragePath), null, contentLength, 0, -1, lockToken, oldEtag); // Update remote storage file content. using (Stream davContentStream = await request.GetRequestStreamAsync()) { if (content != null) { await content.CopyToAsync(davContentStream); } // Get the new ETag returned by the server (if any). IWebResponseAsync response = await request.GetResponseAsync(); string eTagNew = response.Headers["ETag"]; response.Close(); // Store ETag unlil the next update. // This will also mark the item as not new, which is required for correct MS Office saving opertions. await customDataManager.ETagManager.SetETagAsync(eTagNew); // Update ETag in custom column displayed in file manager. await customDataManager.SetCustomColumnsAsync(new[] { new FileSystemItemPropertyData((int)CustomColumnIds.ETag, eTagNew) }); } } }
/// <inheritdoc/> public async Task <byte[]> CreateFileAsync(IFileMetadata fileMetadata, Stream content = null) { string userFileSystemNewItemPath = Path.Combine(UserFileSystemPath, fileMetadata.Name); Logger.LogMessage($"{nameof(IFolder)}.{nameof(CreateFileAsync)}()", userFileSystemNewItemPath); Uri newFileUri = new Uri(new Uri(RemoteStoragePath), fileMetadata.Name); long contentLength = content != null ? content.Length : 0; IWebRequestAsync request = await Program.DavClient.GetFileWriteRequestAsync(newFileUri, null, contentLength); // Update remote storage file content. using (Stream davContentStream = await request.GetRequestStreamAsync()) { if (content != null) { await content.CopyToAsync(davContentStream); } // Get the new ETag returned by the server (if any). IWebResponseAsync response = await request.GetResponseAsync(); string eTagNew = response.Headers["ETag"]; response.Close(); ExternalDataManager customDataManager = Engine.CustomDataManager(userFileSystemNewItemPath); // Store ETag unlil the next update. // This will also mark the item as not new, which is required for correct MS Office saving opertions. await customDataManager.ETagManager.SetETagAsync(eTagNew); customDataManager.IsNew = false; // Mark file as not new just in case the server did not return the ETag. // Update ETag in custom column displayed in file manager. await customDataManager.SetCustomColumnsAsync(new[] { new FileSystemItemPropertyData((int)CustomColumnIds.ETag, eTagNew) }); } return(null); }
/// <summary> /// Creates or updates file in the remote storage. /// </summary> /// <param name="remoteStorageUri">Uri of the file to be created or updated in the remote storage.</param> /// <param name="newInfo">New information about the file, such as modification date, attributes, custom data, etc.</param> /// <param name="mode">Specifies if a new file should be created or existing file should be updated.</param> /// <param name="content">New file content or null if the file content is not modified.</param> /// <param name="lockInfo">Information about the lock. Caller passes null if the item is not locked.</param> /// <returns>New ETag returned from the remote storage.</returns> protected async Task <string> CreateOrUpdateFileAsync(Uri remoteStorageUri, IFileBasicInfo newInfo, FileMode mode, Stream content = null, ServerLockInfo lockInfo = null) { string eTag = null; string lockToken = null; // Get ETag and lock-token here and send it to the remote storage with the new item content/info. if (mode == FileMode.Open) { // Get ETag. eTag = await ETag.GetETagAsync(UserFileSystemPath); // Get lock-token. lockToken = lockInfo?.LockToken; } if (content != null || mode == FileMode.CreateNew) { long contentLength = content != null ? content.Length : 0; IWebRequestAsync request = await Program.DavClient.GetFileWriteRequestAsync(remoteStorageUri, null, contentLength, 0, -1, lockToken, eTag); // Update remote storage file content. using (Stream davContentStream = await request.GetRequestStreamAsync()) { if (content != null) { await content.CopyToAsync(davContentStream); } // Get ETag returned by the server, if any. IWebResponseAsync response = await request.GetResponseAsync(); eTag = response.Headers["ETag"]; response.Close(); } } return(eTag); }