private void PersistBackupObject <T>(T target, string filename, DataBackupConfiguration backupConfiguration) where T : class
{
var serializedObject = backupConfiguration.Serializer.SerializeObjectForBackup(target);
var fullPath = _fileSystem.Path.Combine(backupConfiguration.BackupOutputFolder, filename);
_fileSystem.File.WriteAllBytes(fullPath, serializedObject);
}
private void RequireBackupFolder(DataBackupConfiguration backupConfiguration)
{
if (!_fileSystem.Directory.Exists(backupConfiguration.BackupOutputFolder))
{
_fileSystem.Directory.CreateDirectory(backupConfiguration.BackupOutputFolder);
}
}
public void Backup(Answer answer, DataBackupConfiguration backupConfiguration)
{
RequireBackupFolder(backupConfiguration);
var snapshot = AnswerSnapshot(answer);
PersistBackupObject(snapshot, $"answer{answer.AnswerId}.{backupConfiguration.Serializer.Extension}", backupConfiguration);
}
public async Task Backup(PangulDbContext db, Question question, DataBackupConfiguration backupConfiguration)
{
RequireBackupFolder(backupConfiguration);
var snapshot = await QuestionSnapshot(db, question);
PersistBackupObject(snapshot, $"question{question.QuestionId}.{backupConfiguration.Serializer.Extension}", backupConfiguration);
}
public async Task PurgeExistingAnswer(PangulDbContext db, UserContext user, string answerId, DataBackupConfiguration backupConfiguration)
{
var answer = await _answerService.GetAnswer(db, user, answerId);
if (answer == null)
{
throw new PangulCommandFailedException(CommandFailureType.MissingData, $"No such answer ({answerId})");
}
await _internalUserPermissionService.RequireWriteAccessFor(answer, user);
_backupService.Backup(answer, backupConfiguration);
await _purgeAnswer.Execute(db, new PurgeAnswerData()
{
Answer = answer,
UserContext = user
});
}
public async Task PurgeExistingQuestion(PangulDbContext db, UserContext user, string questionId, DataBackupConfiguration backupConfiguration)
{
var question = await _questionService.GetQuestion(db, user, questionId);
if (question == null)
{
throw new PangulCommandFailedException(CommandFailureType.MissingData, $"No such question ({questionId})");
}
await _backupService.Backup(db, question, backupConfiguration);
await _purgeQuestion.Execute(db, new PurgeQuestionData()
{
Question = question,
UserContext = user
});
}
