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|
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Xml;
using System.Xml.XPath;
using System.Threading.Tasks;
namespace BackupSql
{
/// <summary>
/// Type of SQL Server Backup
/// </summary>
public enum BackupType
{
/// <summary>
/// FULL Backup : all the data is saved
/// </summary>
Full = 0,
/// <summary>
/// DIFFERENTIAL Backup : only data changed since last FULL Backup is saved
/// </summary>
Differential = 1,
/// <summary>
/// LOG Backup : all log entries since last LOG Backup are saved and released
/// </summary>
Log = 2,
}
/// <summary>
/// Represents a SQL Server Database object
/// </summary>
public class Database
{
private string InstanceName;
private BackupType TypeOfBackup = BackupType.Log;
private DateTime StartBackup = DateTime.Now;
/// <summary>
/// Database name
/// </summary>
public string Name { get; set; }
/// <summary>
/// Last FULL Backup date
/// </summary>
public DateTime LastFull { get; set; }
/// <summary>
/// Last DIFFERENTIAL Backup date
/// </summary>
public DateTime LastDiff { get; set; }
/// <summary>
/// Last LOG Backup date
/// </summary>
public DateTime LastLog { get; set; }
/// <summary>
/// Instanciates a new Database object from configuration file
/// </summary>
/// <param name="instanceName">Full SQL Server Instance name</param>
/// <param name="node">Configuration file XML Node for this database</param>
public Database(string instanceName, IXPathNavigable node)
{
XmlNode nd = (node as XmlNode);
this.InstanceName = instanceName;
this.Name = nd.Attributes["name"].Value;
DateTime lastfull = DateTime.MinValue;
DateTime lastdiff = DateTime.MinValue;
DateTime lastlog = DateTime.MinValue;
if (!DateTime.TryParse(nd.Attributes["lastfull"].Value, out lastfull))
{
Console.Error.WriteLine("Can't parse lastfull date format");
Console.WriteLine("Can't parse lastfull date format");
}
if (!DateTime.TryParse(nd.Attributes["lastdiff"].Value, out lastdiff))
{
Console.Error.WriteLine("Can't parse lastdiff date format");
Console.WriteLine("Can't parse lastdiff date format");
}
if (!DateTime.TryParse(nd.Attributes["lastlog"].Value, out lastlog))
{
Console.Error.WriteLine("Can't parse lastlog date format");
Console.WriteLine("Can't parse lastlog date format");
}
this.LastFull = lastfull;
this.LastDiff = lastdiff;
this.LastLog = lastlog;
Console.Error.WriteLine("Last FULL : {0}", this.LastFull.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.CurrentCulture));
Console.Error.WriteLine("Last DIFF : {0}", this.LastDiff.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.CurrentCulture));
Console.Error.WriteLine("Last LOG : {0}", this.LastLog.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.CurrentCulture));
}
/// <summary>
/// Instanciates a new Database object from its name
/// </summary>
/// <param name="instanceName">Full SQL Server Instance name</param>
/// <param name="name">Database name</param>
public Database(string instanceName, string name)
{
this.InstanceName = instanceName;
this.Name = name;
this.LastFull = DateTime.MinValue;
this.LastDiff = DateTime.MinValue;
this.LastLog = DateTime.MinValue;
Console.Error.WriteLine("Last FULL : {0}", this.LastFull.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.CurrentCulture));
Console.Error.WriteLine("Last DIFF : {0}", this.LastDiff.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.CurrentCulture));
Console.Error.WriteLine("Last LOG : {0}", this.LastLog.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.CurrentCulture));
}
/// <summary>
/// Force RECOVERY MODEL of the Database to FULL except for MASTER database that doesn't allow this
/// </summary>
public void SetRecoveryModel()
{
if (this.Name == "master")
{
return;
}
using (SqlConnection cnx = new SqlConnection(string.Format(CultureInfo.CurrentCulture, "Server='{0}';Database=master;Trusted_Connection=True;", this.InstanceName)))
{
cnx.Open();
string recovery_model_desc;
using (SqlCommand cmd = cnx.CreateCommand())
{
cmd.CommandText = "select recovery_model_desc from sys.databases where name = @name";
SqlParameter pName = cmd.CreateParameter();
pName.ParameterName = "name";
pName.SqlDbType = SqlDbType.VarChar;
pName.Size = 100;
pName.Value = this.Name;
cmd.Parameters.Add(pName);
cmd.Prepare();
recovery_model_desc = (string)cmd.ExecuteScalar();
}
if (recovery_model_desc != "FULL")
{
Console.Error.WriteLine("Changed recovery model to FULL on {0}", this.Name);
Console.WriteLine("Changed recovery model to FULL on {0}", this.Name);
using (SqlCommand cmd = cnx.CreateCommand())
{
cmd.CommandText = string.Format(CultureInfo.CurrentCulture, "alter database [{0}] set recovery full", this.Name);
cmd.ExecuteNonQuery();
}
}
if (cnx.State == ConnectionState.Open)
{
cnx.Close();
}
}
}
/// <summary>
/// Checks the backup destination path exists or creates it
/// </summary>
public void PreparePath()
{
if (!InstanceList.Instance.BackupUncPath.StartsWith("\\"))
{
throw new Exception("The backup folder must be a UNC path!");
}
if (!Directory.Exists(InstanceList.Instance.BackupUncPath))
{
throw new Exception("The backup folder doesn't exists!");
}
if (!Directory.Exists(string.Format(CultureInfo.CurrentCulture, "{0}\\{1}", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'))))
{
Directory.CreateDirectory(string.Format(CultureInfo.CurrentCulture, "{0}\\{1}", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_')));
}
if (!Directory.Exists(string.Format(CultureInfo.CurrentCulture, "{0}\\{1}\\{2}", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'), this.Name)))
{
Directory.CreateDirectory(string.Format(CultureInfo.CurrentCulture, "{0}\\{1}\\{2}", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'), this.Name));
}
}
/// <summary>
/// Backups the database
/// </summary>
public void Backup()
{
string backupCmdData = string.Empty;
string backupFilenameData = string.Empty;
string backupFilenameLog = string.Empty;
string backupName = string.Format(CultureInfo.CurrentCulture, "Backup of {0}", this.Name);
this.SetRecoveryModel();
this.PreparePath();
Console.Error.WriteLine("Starts backup of {0}", this.Name);
if (this.LastFull.AddHours(InstanceList.Instance.IntervalFull) < this.StartBackup || this.Name == "master")
{
backupCmdData = "BACKUP DATABASE @name TO DISK = @filename WITH NAME = @bckName, CHECKSUM";
this.TypeOfBackup = BackupType.Full;
backupFilenameData = string.Format(CultureInfo.CurrentCulture, "{0}\\{1}\\{2}\\DATA_FULL_{3}.BAK", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'), this.Name, this.StartBackup.ToString("yyyyMMddHHmmssfff", CultureInfo.CurrentCulture));
}
else if (this.LastDiff.AddHours(InstanceList.Instance.IntervalDiff) < this.StartBackup)
{
backupCmdData = "BACKUP DATABASE @name TO DISK = @filename WITH DIFFERENTIAL, NAME = @bckName, CHECKSUM";
this.TypeOfBackup = BackupType.Differential;
backupFilenameData = string.Format(CultureInfo.CurrentCulture, "{0}\\{1}\\{2}\\DATA_DIFFERENTIAL_{3}.BAK", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'), this.Name, this.StartBackup.ToString("yyyyMMddHHmmssfff", CultureInfo.CurrentCulture));
}
Console.Error.WriteLine("Backup type is {0}", this.TypeOfBackup);
string backupCmdLog = "BACKUP LOG @name TO DISK = @filename WITH NAME = @bckName, CHECKSUM";
backupFilenameLog = string.Format(CultureInfo.CurrentCulture, "{0}\\{1}\\{2}\\LOG_{3}.BAK", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'), this.Name, this.StartBackup.ToString("yyyyMMddHHmmssfff", CultureInfo.CurrentCulture));
using (SqlConnection cnx = new SqlConnection(string.Format(CultureInfo.CurrentCulture, "Server='{0}';Database=master;Trusted_Connection=True;", this.InstanceName)))
{
try
{
cnx.Open();
}
catch
{
Console.Error.WriteLine("Unable to connect at {0}", this.Name);
Console.WriteLine("Unable to connect at {0}", this.Name);
backupFilenameData = string.Empty;
backupFilenameLog = string.Empty;
return;
}
using (SqlCommand cmd = cnx.CreateCommand())
{
cmd.CommandTimeout = 36000;
if (backupCmdData.Length > 0)
{
cmd.CommandText = backupCmdData;
SqlParameter pName = cmd.CreateParameter();
pName.ParameterName = "name";
pName.SqlDbType = SqlDbType.VarChar;
pName.Size = 50;
pName.Value = this.Name;
cmd.Parameters.Add(pName);
SqlParameter pFilename = cmd.CreateParameter();
pFilename.ParameterName = "filename";
pFilename.SqlDbType = SqlDbType.VarChar;
pFilename.Size = 256;
pFilename.Value = backupFilenameData;
cmd.Parameters.Add(pFilename);
SqlParameter pBackupName = cmd.CreateParameter();
pBackupName.ParameterName = "bckName";
pBackupName.SqlDbType = SqlDbType.VarChar;
pBackupName.Size = 50;
pBackupName.Value = backupName;
cmd.Parameters.Add(pBackupName);
Console.Error.WriteLine("Performs backup");
try
{
cmd.ExecuteNonQuery();
}
catch (Exception e)
{
Console.Error.WriteLine("Error during backup of {0} on {1} !!!", this.Name, this.InstanceName);
Console.Error.WriteLine(e.Message);
Console.WriteLine("Error during backup of {0} on {1} !!!", this.Name, this.InstanceName);
Console.WriteLine(e.Message);
backupFilenameData = string.Empty;
}
cmd.Parameters.Clear();
}
if (this.Name != "master")
{
cmd.CommandText = backupCmdLog;
SqlParameter pName2 = cmd.CreateParameter();
pName2.ParameterName = "name";
pName2.SqlDbType = SqlDbType.VarChar;
pName2.Size = 50;
pName2.Value = this.Name;
cmd.Parameters.Add(pName2);
SqlParameter pFilename2 = cmd.CreateParameter();
pFilename2.ParameterName = "filename";
pFilename2.SqlDbType = SqlDbType.VarChar;
pFilename2.Size = 256;
pFilename2.Value = backupFilenameLog;
cmd.Parameters.Add(pFilename2);
SqlParameter pBackupName2 = cmd.CreateParameter();
pBackupName2.ParameterName = "bckName";
pBackupName2.SqlDbType = SqlDbType.VarChar;
pBackupName2.Size = 50;
pBackupName2.Value = backupName;
cmd.Parameters.Add(pBackupName2);
Console.Error.WriteLine("Performs log backup");
try
{
cmd.ExecuteNonQuery();
}
catch (Exception e)
{
Console.Error.WriteLine("Error during log backup of {0} on {1} !!!", this.Name, this.InstanceName);
Console.Error.WriteLine(e.Message);
Console.WriteLine("Error during log backup of {0} on {1} !!!", this.Name, this.InstanceName);
Console.WriteLine(e.Message);
backupFilenameLog = string.Empty;
}
}
}
if (cnx.State == ConnectionState.Open)
{
cnx.Close();
}
}
if ((this.TypeOfBackup != BackupType.Log && backupFilenameData.Length == 0) || backupFilenameLog.Length == 0)
{
Console.Error.WriteLine("Error during backup of {0} on {1}. Will not clean up older backups", this.Name, this.InstanceName);
Console.WriteLine("Error during backup of {0} on {1}. Will not clean up older backups", this.Name, this.InstanceName);
return;
}
Console.Error.WriteLine("Starts backup cleaning of {0}", this.Name);
switch (this.TypeOfBackup)
{
case BackupType.Full:
DirectoryInfo di1 = new DirectoryInfo(string.Format(CultureInfo.CurrentCulture, "{0}\\{1}\\{2}", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'), this.Name));
FileInfo[] files1 = di1.GetFiles("*.BAK", SearchOption.TopDirectoryOnly);
foreach (FileInfo file in files1)
{
if (file.CreationTime < LastFull)
{
Console.Error.WriteLine("\tDEL {0}", file.Name);
file.Delete();
}
}
this.LastFull = this.StartBackup;
break;
case BackupType.Differential:
DirectoryInfo di2 = new DirectoryInfo(string.Format(CultureInfo.CurrentCulture, "{0}\\{1}\\{2}", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'), this.Name));
FileInfo[] files2 = di2.GetFiles("LOG_*.BAK", SearchOption.TopDirectoryOnly);
foreach (FileInfo file in files2)
{
if (file.CreationTime < LastFull)
{
Console.Error.WriteLine("\tDEL {0}", file.Name);
file.Delete();
}
}
this.LastDiff = this.StartBackup;
break;
default:
this.LastLog = this.StartBackup;
break;
}
}
/// <summary>
/// Restores the database on another instance
/// </summary>
public void Restore(string remoteInstanceName)
{
if (this.Name == "master")
{
return;
}
Console.Error.WriteLine("Starts restore of {0} on {1}", this.Name, remoteInstanceName);
string restoreCmdData = "RESTORE DATABASE @name FROM DISK = @filename WITH NORECOVERY, REPLACE";
string restoreCmdLog = "RESTORE LOG @name FROM DISK = @filename WITH NORECOVERY, REPLACE";
using (SqlConnection cnx = new SqlConnection(string.Format(CultureInfo.CurrentCulture, "Server='{0}';Database=master;Trusted_Connection=True;", remoteInstanceName)))
{
try
{
cnx.Open();
}
catch
{
Console.Error.WriteLine("Unable to connect at {0}", this.Name);
Console.WriteLine("Unable to connect at {0}", this.Name);
return;
}
using (SqlCommand cmd = cnx.CreateCommand())
{
cmd.CommandTimeout = 36000;
SqlParameter pName = cmd.CreateParameter();
pName.ParameterName = "name";
pName.SqlDbType = SqlDbType.VarChar;
pName.Size = 50;
cmd.Parameters.Add(pName);
SqlParameter pFilename = cmd.CreateParameter();
pFilename.ParameterName = "filename";
pFilename.SqlDbType = SqlDbType.VarChar;
pFilename.Size = 256;
cmd.Parameters.Add(pFilename);
if (this.LastFull == this.StartBackup)
{
cmd.CommandText = restoreCmdData;
pName.Value = this.Name;
pFilename.Value = string.Format(CultureInfo.CurrentCulture, "{0}\\{1}\\{2}\\DATA_FULL_{3}.BAK", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'), this.Name, this.StartBackup.ToString("yyyyMMddHHmmssfff", CultureInfo.CurrentCulture));
Console.Error.WriteLine("Performs FULL restore");
try
{
cmd.ExecuteNonQuery();
}
catch (Exception e)
{
Console.Error.WriteLine("Error during restore of {0} on {1} !!!", this.Name, remoteInstanceName);
Console.Error.WriteLine(e.Message);
Console.WriteLine("Error during restore of {0} on {1} !!!", this.Name, remoteInstanceName);
Console.WriteLine(e.Message);
}
}
cmd.CommandText = restoreCmdLog;
pName.Value = this.Name;
pFilename.Value = string.Format(CultureInfo.CurrentCulture, "{0}\\{1}\\{2}\\LOG_{3}.BAK", InstanceList.Instance.BackupUncPath, this.InstanceName.Replace('\\', '_'), this.Name, this.StartBackup.ToString("yyyyMMddHHmmssfff", CultureInfo.CurrentCulture));
Console.Error.WriteLine("Performs LOG restore");
try
{
cmd.ExecuteNonQuery();
}
catch (Exception e)
{
Console.Error.WriteLine("Error during log retore of {0} on {1} !!!", this.Name, remoteInstanceName);
Console.Error.WriteLine(e.Message);
Console.WriteLine("Error during log restore of {0} on {1} !!!", this.Name, remoteInstanceName);
Console.WriteLine(e.Message);
}
}
if (cnx.State == ConnectionState.Open)
{
cnx.Close();
}
}
}
}
/// <summary>
/// Represents a SQL Server Instance
/// </summary>
public class Instance
{
/// <summary>
/// Instance full name (server\instance)
/// </summary>
public string Name { get; set; }
/// <summary>
/// List of databases of the instance
/// </summary>
public List<Database> Databases;
/// <summary>
/// Indicates the instance where the databases must be restored
/// </summary>
public string RestoreTo { get; set; }
/// <summary>
/// Instanciates a new Intance object
/// </summary>
/// <param name="serverNode">Configuration file XML node containing this instance</param>
public Instance(XmlNode serverNode)
{
this.Name = serverNode.Attributes["name"].Value;
if (serverNode.Attributes["restore"] != null)
{
this.RestoreTo = serverNode.Attributes["restore"].Value;
}
else
{
this.RestoreTo = string.Empty;
}
this.Databases = LoadDatabaseList(serverNode.SelectNodes("database"));
}
/// <summary>
/// Loads databases of the instance, then complete them with configuration file
/// </summary>
/// <param name="databases">Configuration file xml nodes representing the instance databases</param>
/// <returns></returns>
public List<Database> LoadDatabaseList(XmlNodeList databases)
{
Console.Error.WriteLine("Loads databases list for {0}", this.Name);
List<Database> list = new List<Database>();
using (SqlConnection cnx = new SqlConnection(string.Format(CultureInfo.CurrentCulture, "Server='{0}';Database=master;Trusted_Connection=True;", this.Name)))
{
try
{
cnx.Open();
}
catch
{
Console.Error.WriteLine("Unable to connect to MASTER on {0}", this.Name);
Console.WriteLine("Unable to connect to MASTER on {0}", this.Name);
return list;
}
using (SqlCommand cmd = cnx.CreateCommand())
{
cmd.CommandText = "select name from master.dbo.sysdatabases where name not in ('model', 'msdb', 'tempdb', 'ReportServer', 'ReportServerTempDB')";
SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult);
while (dr.Read())
{
bool found = false;
string databasename = dr.GetString(0);
Console.Error.WriteLine("\t- {0}", databasename);
foreach (XmlNode nd in databases)
{
if (nd.Attributes["name"].Value == databasename)
{
list.Add(new Database(this.Name, nd));
found = true;
break;
}
}
if (!found)
{
list.Add(new Database(this.Name, databasename));
}
}
}
if (cnx.State == ConnectionState.Open)
{
cnx.Close();
}
}
return list;
}
/// <summary>
/// Bakcups all the databases from the instance
/// </summary>
public void Backup()
{
Console.Error.WriteLine("Backups databases on {0}", this.Name);
foreach (Database database in this.Databases)
{
database.Backup();
}
if (this.RestoreTo.Length > 0)
{
this.Restore();
}
}
/// <summary>
/// Restores all the databases to another instance
/// </summary>
public void Restore()
{
Console.Error.WriteLine("Restores databases from {0} to {1}", this.Name, this.RestoreTo);
foreach (Database database in this.Databases)
{
if (database.Name != "master")
{
database.Restore(this.RestoreTo);
}
}
}
}
/// <summary>
/// Represents a list of Instance objects
/// </summary>
public sealed class InstanceList : List<Instance>
{
private static readonly InstanceList uniqueInstance = new InstanceList();
/// <summary>
/// UNC path to the backup
/// </summary>
public string BackupUncPath { get; set; }
/// <summary>
/// Interval between two FULL backups
/// </summary>
public int IntervalFull { get; set; }
/// <summary>
/// Interval between two DIFFERENTIAL backups
/// </summary>
public int IntervalDiff { get; set; }
/// <summary>
/// Instantiate a new InstanceList object
/// </summary>
private InstanceList()
{
Console.Error.WriteLine("Loads configuration");
XmlDocument doc = new XmlDocument();
doc.Load("servers.xml");
this.BackupUncPath = doc.DocumentElement.SelectSingleNode("/backupsql/uncpath").InnerText;
this.IntervalFull = int.Parse(doc.DocumentElement.SelectSingleNode("/backupsql/interval/full").InnerText, CultureInfo.CurrentCulture);
this.IntervalDiff = int.Parse(doc.DocumentElement.SelectSingleNode("/backupsql/interval/diff").InnerText, CultureInfo.CurrentCulture);
Console.Error.WriteLine("Backup path : {0}", this.BackupUncPath);
Console.Error.WriteLine("Backup FULL intervall : {0}", this.IntervalFull);
Console.Error.WriteLine("backup DIFF intervall : {0}", this.IntervalDiff);
Console.Error.WriteLine("Instances to be backed up :");
foreach (XmlNode nd in doc.DocumentElement.SelectNodes("/backupsql/servers/server"))
{
Console.Error.WriteLine("\t- {0}", nd.Attributes["name"].Value);
this.Add(new Instance(nd));
}
}
/// <summary>
/// Saves configuration of the instance
/// </summary>
public void Save()
{
Console.Error.WriteLine("Saves configuration");
XmlDocument doc = new XmlDocument();
doc.Load("servers.xml");
XmlNode ndInstances = doc.SelectSingleNode("/backupsql/servers");
ndInstances.RemoveAll();
foreach (Instance instance in this)
{
XmlNode ndInstance = ndInstances.OwnerDocument.CreateElement("server");
XmlAttribute attInstanceName = ndInstance.OwnerDocument.CreateAttribute("name");
attInstanceName.Value = instance.Name;
XmlAttribute attInstanceRestoreTo = ndInstance.OwnerDocument.CreateAttribute("restore");
attInstanceRestoreTo.Value = instance.RestoreTo;
foreach (Database database in instance.Databases)
{
XmlNode ndDatabase = ndInstance.OwnerDocument.CreateElement("database");
XmlAttribute attDatabaseName = ndDatabase.OwnerDocument.CreateAttribute("name");
XmlAttribute attDatabaseLastFull = ndDatabase.OwnerDocument.CreateAttribute("lastfull");
XmlAttribute attDatabaseLastDiff = ndDatabase.OwnerDocument.CreateAttribute("lastdiff");
XmlAttribute attDatabaseLastLog = ndDatabase.OwnerDocument.CreateAttribute("lastlog");
attDatabaseName.Value = database.Name;
attDatabaseLastFull.Value = database.LastFull.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.CurrentCulture);
attDatabaseLastDiff.Value = database.LastDiff.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.CurrentCulture);
attDatabaseLastLog.Value = database.LastLog.ToString("yyyy-MM-dd HH:mm:ss.fff", CultureInfo.CurrentCulture);
ndDatabase.Attributes.Append(attDatabaseName);
ndDatabase.Attributes.Append(attDatabaseLastFull);
ndDatabase.Attributes.Append(attDatabaseLastDiff);
ndDatabase.Attributes.Append(attDatabaseLastLog);
ndInstance.AppendChild(ndDatabase);
}
ndInstance.Attributes.Append(attInstanceName);
ndInstance.Attributes.Append(attInstanceRestoreTo);
ndInstances.AppendChild(ndInstance);
}
doc.Save("servers.xml");
}
/// <summary>
/// Backups all the SQL Server Instances
/// </summary>
public void Backup()
{
Console.Error.WriteLine("Starts backup of all instances");
Task[] tasks = new Task[this.Count];
for (int i = 0; i < this.Count; i++)
{
var value = i;
tasks[value] = new Task(() => this[value].Backup());
tasks[value].Start();
}
Task.WaitAll(tasks);
this.Save();
Console.Error.WriteLine("Ends backup of all instances");
}
/// <summary>
/// Singleton
/// </summary>
public static InstanceList Instance
{
get
{
return uniqueInstance;
}
}
}
} |
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