public async Task <FtpClientResponse> ReadAsync(FtpConfig config, Func <string, Task <string> > securePasswordCallBack, Func <string, string, string, MemoryStream, string, string, bool> copyFileFunc) { var response = new FtpClientResponse { ErrorMessage = FtpConstants.NoError, Status = FtpConstants.SuccessStatus, FileData = new List <FtpClientResponseFile>() }; try { await CreateFtpClientAsync(config, securePasswordCallBack); Func <FtpListItem, bool> predicate = f => f.Type == FtpFileSystemObjectType.File; if (!string.IsNullOrEmpty(config.Ftp.FilenameRegex)) { var rx = new Regex(config.Ftp.FilenameRegex, RegexOptions.IgnoreCase); predicate = f => f.Type == FtpFileSystemObjectType.File && rx.IsMatch(f.Name); } var listOfFiles = _ftpPolicyRegistry.GetPolicy(FtpPolicyName.FtpCommandPolicy) .Execute((context) => _ftpClient.GetListing(config.Ftp.Path).Where(predicate), new Polly.Context($"LIST_FILE_{config.Ftp.Path}")); if (!string.IsNullOrEmpty(config.Ftp.ArchivedPath) && config.Ftp.ArchivedPath != config.Ftp.Path) { var folderExisted = _ftpClient.DirectoryExists(config.Ftp.ArchivedPath); if (!folderExisted) { _ftpPolicyRegistry.GetPolicy(FtpPolicyName.FtpCommandPolicy).Execute((context) => _ftpClient.CreateDirectory(config.Ftp.ArchivedPath), new Polly.Context("CREATE_ARCHIVE_FOLDER")); } } var resolvedStorageAccountKey = await securePasswordCallBack.Invoke(config.AzureBlobStorage.StorageKeyVault); foreach (var item in listOfFiles) { bool copied = false; bool isArchived = false; try { var fileName = item.Name; using (var istream = await _ftpClient.OpenReadAsync(item.FullName)) { MemoryStream memoryStream = new MemoryStream(); istream.CopyTo(memoryStream); memoryStream.Position = 0; copied = copyFileFunc.Invoke(config.AzureBlobStorage.ContainerName, fileName, config.Retry.StorageRetryPolicy, memoryStream, config.AzureBlobStorage.StorageAccountName, resolvedStorageAccountKey); } if (copied && !string.IsNullOrEmpty(config.Ftp.ArchivedPath) && config.Ftp.ArchivedPath != config.Ftp.Path) { isArchived = _ftpPolicyRegistry.GetPolicy(FtpPolicyName.FtpCommandPolicy).Execute((context) => _ftpClient.MoveFile(item.FullName, config.Ftp.ArchivedPath + "\\" + item.Name, FtpExists.Overwrite), new Polly.Context("COPY_FILE_TO_ARCHIVE")); } else if (config.Ftp.ArchivedPath == config.Ftp.Path) { //delete mode isArchived = _ftpPolicyRegistry.GetPolicy(FtpPolicyName.FtpCommandPolicy).Execute((context) => { _ftpClient.DeleteFile(item.FullName); return(true); }, new Polly.Context("DELETE_FILE_TO_ARCHIVE")); } var fres = new FtpClientResponseFile { Status = (copied && isArchived) ? FtpConstants.SuccessStatus : FtpConstants.FailureStatus, FileName = item.Name, ErrorMessage = (copied ? string.Empty : FtpConstants.BlobUploadError) + " " + (isArchived ? string.Empty : FtpConstants.ArchivedError) }; response.FileData.Add(fres); } catch (Exception ex) { _logger.LogError(ex, $"ActorFtpClient failed to process the file {item.Name}, copy: {copied}, archived {isArchived}. Error: {ex.Message}"); } } await Stop(); } catch (Exception e) { response.ErrorMessage = response.ErrorMessage + e.Message; response.Status = FtpConstants.FailureStatus; _logger.LogError(e, $"ActorFtpClient failed to start creating the client of {config.Ftp.Host} : {e.Message}"); } return(response); }