private async Task <string> BackupBeforeRestoreAsync()
{
this.TraceDebug("nettoyage du dossier SqlDir...");
SqlMessages.Add(new SqlOutput("Cleaning up the buffer directory..."));
foreach (string file in Directory.GetFiles(ServiceBus.Get <IDataBaseService>().GeBackupDir()))
{
try
{
this.TraceDebug(file);
SqlMessages.Add(new SqlOutput(file));
File.Delete(file);
}
catch (Exception e)
{
this.TraceError(e, file);
SqlMessages.Add(new SqlOutput(e));
SqlMessages.Add(new SqlOutput("This error has no consequence for next restore steps. Continuing..."));
}
}
this.TraceDebug("Fin du nettoyage");
string backupFilePath = await DoBackup();
SqlMessages.Add(new SqlOutput("The backup before restore process has succeded. Backup file is store at location:"));
SqlMessages.Add(new SqlOutput(backupFilePath, SqlOutputKind.Path));
return(backupFilePath);
}
private void RestartApplication()
{
this.TraceDebug("Redemarage de l'application");
SqlMessages.Add(new SqlOutput("Restarting the application..."));
DialogFactory.GetDialogView <IMessageDialog>().Show(
LocalizationManager.GetString("View_BackupRestore_Restart"),
LocalizationManager.GetString("View_BackupRestore_RestartTitle"),
MessageDialogButton.OK, MessageDialogImage.Information);
Application.Current.Restart();
}
private void RestartApplicationWithError()
{
this.TraceDebug("Redemarage de l'application en erreur");
SqlMessages.Add(new SqlOutput("Restarting the application..."));
DialogFactory.GetDialogView <IMessageDialog>().Show(
"The database restoration failed. Please contact K-process support at [email protected]",
"Restoration failed",
MessageDialogButton.OK, MessageDialogImage.Error);
Application.Current.Restart();
}
public void OnBatchMessage(object sender, BatchMessageEventArgs args)
{
Console.WriteLine("\tOnBatchMessage ...");
Console.WriteLine("\t\tMessage: " + args.Message);
Console.WriteLine("\t\tDetail message:" + args.DetailedMessage);
if (args.DetailedMessage != "")
{
sqlMessages.Add(args.DetailedMessage);
}
else
{
SqlMessages.Add(null);
}
}
private bool TryPrepareRestore(string source, out string sqlDirSourceFile)
{
this.TraceDebug("Préparation de la restauration");
IDataBaseService dataBaseService = ServiceBus.Get <IDataBaseService>();
string finalSourcePath = Path.Combine(dataBaseService.GeBackupDir(), "tempRestorationFile");
try
{
if (File.Exists(source))
{
SqlMessages.Add(new SqlOutput("Importing backup file..."));
File.Copy(source, finalSourcePath, true);
}
else
{
SqlMessages.Add(new SqlOutput("Restore process has failed: The specified file has not been found", SqlOutputKind.Error));
}
}
catch (UnauthorizedAccessException e)
{
this.TraceError(e, "Une erreur s'est produite durant le processus de restauration de base de donnée (import du fichier de backup)");
SqlMessages.Add(new SqlOutput(e));
SqlMessages.Add(new SqlOutput("Backup file copy has failed. Check files authorization.", SqlOutputKind.Error));
SqlMessages.Add(new SqlOutput("Restore process is rolled backed and aborted now."));
sqlDirSourceFile = null;
return(false);
}
catch (Exception e)
{
this.TraceError(e, "Une erreur non gérée s'est produite durant le processus de restauration de base de donnée (import du fichier de backup)");
SqlMessages.Add(new SqlOutput(e));
SqlMessages.Add(new SqlOutput("A not handled error occured during the importation.", SqlOutputKind.Error));
SqlMessages.Add(new SqlOutput("Restore process is aborted now."));
if (File.Exists(finalSourcePath))
{
File.Delete(finalSourcePath);
}
sqlDirSourceFile = null;
return(false);
}
sqlDirSourceFile = finalSourcePath;
return(true);
}
private async Task DoRestore(string source, int version = 3)
{
SqlExecutionResult <string> sqlResult = ServiceBus.Get <IDataBaseService>().Restore(source, version, true);
sqlResult.SqlMessageSent += SqlResultSqlMessageSent;
try
{
await sqlResult.Start();
sqlResult.SqlMessageSent -= SqlResultSqlMessageSent;
this.TraceInfo("Le processus de restauration de la base de données s'est déroulé avec succés");
SqlMessages.Add(new SqlOutput("restore process of the backup file has succeeded.", SqlOutputKind.Success));
try
{
if (File.Exists(source))
{
File.Delete(source);
}
}
catch (Exception ex)
{
SqlMessages.Add(new SqlOutput("An error occured while trying to remove the imported backup file.", SqlOutputKind.Error));
this.TraceError("Suppression du fichier temporaire importé pour le processus de restauration", ex);
}
RestartApplication();
}
catch (Exception e)
{
sqlResult.SqlMessageSent -= SqlResultSqlMessageSent;
this.TraceError(e, "Une erreur s'est produite durant le processus de restauration de base de donnée");
SqlMessages.Add(new SqlOutput(e.InnerException ?? e));
SqlMessages.Add(new SqlOutput("Restoration failed and rolled back.", SqlOutputKind.Error));
try
{
if (File.Exists(source))
{
File.Delete(source);
}
}
catch (Exception ex)
{
SqlMessages.Add(new SqlOutput("An error occured while trying to remove the imported backup file.", SqlOutputKind.Error));
this.TraceError("Suppression du fichier temporaire importé pour le processus de restauration", ex);
}
RestartApplicationWithError();
}
}
private async Task <string> DoBackup()
{
SqlExecutionResult <string> sqlResult = ServiceBus.Get <IDataBaseService>().Backup(true);
sqlResult.SqlMessageSent += SqlResultSqlMessageSent;
try
{
string source = await sqlResult.Start();
sqlResult.SqlMessageSent -= SqlResultSqlMessageSent;
return(source);
}
catch (Exception e)
{
this.TraceError(e, "Une erreur s'est produite durant le processus de backup de base de donnée");
SqlMessages.Add(new SqlOutput(e.InnerException ?? e));
SqlMessages.Add(new SqlOutput("Backup failed and rolled back.", SqlOutputKind.Error));
return(null);
}
}
private void SqlResultSqlMessageSent(object sender, SqlInfoMessageEventArgs e)
{
this.TraceDebug(e.Message);
Application.Current.Dispatcher.BeginInvoke(new Action(() => SqlMessages.Add(new SqlOutput(e))), DispatcherPriority.Normal);
}
private bool TryFinalizeBackup(string source, string destination)
{
if (string.IsNullOrWhiteSpace(source) || string.IsNullOrWhiteSpace(destination))
{
this.TraceDebug("La finalisation du backup est annulée");
SqlMessages.Add(new SqlOutput("Backup finalization is skipped"));
return(false);
}
this.TraceDebug("Finalisation du backup");
SqlMessages.Add(new SqlOutput("Copying buffered file in destination folder..."));
try
{
this.TraceDebug("Copie des fichiers {0}, -> {1}".Format(new[] { source, destination }));
File.Copy(source, destination, true);
File.Delete(source);
SqlMessages.Add(new SqlOutput("Backup file created successfuly:", SqlOutputKind.Success));
SqlMessages.Add(new SqlOutput(destination, SqlOutputKind.Path));
}
catch (UnauthorizedAccessException e)
{
this.TraceError(e, "Interception de l'erreur de droits sur fichier");
SqlMessages.Add(new SqlOutput(e));
SqlMessages.Add(new SqlOutput("Creation of the backup is not allowed in this folder. Check folder security:", SqlOutputKind.Error));
SqlMessages.Add(new SqlOutput(destination, SqlOutputKind.Path));
if (File.Exists(source))
{
try
{
File.Delete(source);
}
catch (IOException eDelete)
{
this.TraceError(e, "Erreur lors de la suppression du fichier dans le buffer SQL");
SqlMessages.Add(new SqlOutput(eDelete));
SqlMessages.Add(new SqlOutput("An error occured while trying to clean up the SQL buffer folder", SqlOutputKind.Error));
}
}
return(false);
}
catch (Exception e)
{
this.TraceError(e, "Interception d'une erreur générique");
SqlMessages.Add(new SqlOutput(e));
SqlMessages.Add(new SqlOutput("A not handled error occured during the backup process.", SqlOutputKind.Error));
try
{
if (File.Exists(source))
{
File.Delete(source);
}
}
catch (IOException eDelete)
{
this.TraceError(e, "Erreur lors de la suppression du fichier dans le buffer SQL");
SqlMessages.Add(new SqlOutput(eDelete));
SqlMessages.Add(new SqlOutput("An error occured while trying to clean up the SQL buffer folder", SqlOutputKind.Error));
}
return(false);
}
return(true);
}
