void DownloadDatabase_Loaded(object sender, RoutedEventArgs e)
{
estimation = Server.Return((IDisconnectedServer ds) => ds.GetDownloadEstimation(DisconnectedMachineEntity.Current));
pbGenerating.Minimum = 0;
pbGenerating.Maximum = 1;
currentLite = transferServer.BeginExportDatabase(UserEntity.Current.ToLite(), DisconnectedMachineEntity.Current);
timer.Tick += new EventHandler(timer_Tick);
timer.Interval = TimeSpan.FromSeconds(1);
timer.Start();
}
public virtual Lite <DisconnectedExportEntity> BeginExportDatabase(DisconnectedMachineEntity machine)
{
Lite <DisconnectedExportEntity> export = new DisconnectedExportEntity
{
Machine = machine.ToLite(),
Copies = downloadTables.Select(t => new DisconnectedExportTableEmbedded
{
Type = t.Type.ToTypeEntity().ToLite()
}).ToMList()
}.Save().ToLite();
var cancelationSource = new CancellationTokenSource();
var user = UserHolder.Current;
var token = cancelationSource.Token;
var task = Task.Factory.StartNew(() =>
{
using (UserHolder.UserSession(user))
{
OnStartExporting(machine);
DisconnectedMachineEntity.Current = machine.ToLite();
try
{
using (token.MeasureTime(l => export.InDB().UnsafeUpdate().Set(s => s.Lock, s => l).Execute()))
{
foreach (var tuple in downloadTables)
{
token.ThrowIfCancellationRequested();
if (tuple.Strategy.Upload == Upload.Subset)
{
miUnsafeLock.MakeGenericMethod(tuple.Type).Invoke(this, new object[] { machine.ToLite(), tuple.Strategy, export });
}
}
}
string connectionString;
using (token.MeasureTime(l => export.InDB().UnsafeUpdate().Set(s => s.CreateDatabase, s => l).Execute()))
connectionString = CreateDatabase(machine);
var newDatabase = new SqlServerConnector(connectionString, Schema.Current, ((SqlServerConnector)Connector.Current).Version);
using (token.MeasureTime(l => export.InDB().UnsafeUpdate().Set(s => s.CreateSchema, s => l).Execute()))
using (Connector.Override(newDatabase))
using (ObjectName.OverrideOptions(new ObjectNameOptions {
AvoidDatabaseName = true
}))
{
Administrator.TotalGeneration();
}
using (token.MeasureTime(l => export.InDB().UnsafeUpdate().Set(s => s.DisableForeignKeys, s => l).Execute()))
using (Connector.Override(newDatabase))
using (ObjectName.OverrideOptions(new ObjectNameOptions {
AvoidDatabaseName = true
}))
{
foreach (var tuple in downloadTables.Where(t => !t.Type.IsEnumEntity()))
{
token.ThrowIfCancellationRequested();
DisableForeignKeys(tuple.Table);
}
}
var isPostgres = Schema.Current.Settings.IsPostgres;
DatabaseName newDatabaseName = new DatabaseName(null, newDatabase.DatabaseName(), isPostgres);
foreach (var tuple in downloadTables)
{
token.ThrowIfCancellationRequested();
int ms = 0;
using (token.MeasureTime(l => ms = l))
{
tuple.Strategy.Exporter !.Export(tuple.Table, tuple.Strategy, newDatabaseName, machine);
}
export.MListElementsLite(_ => _.Copies).Where(c => c.Element.Type.Is(tuple.Type.ToTypeEntity())).UnsafeUpdateMList()
.Set(mle => mle.Element.CopyTable, mle => ms)
.Execute();
}
using (token.MeasureTime(l => export.InDB().UnsafeUpdate().Set(s => s.EnableForeignKeys, s => l).Execute()))
foreach (var tuple in downloadTables.Where(t => !t.Type.IsEnumEntity()))
{
token.ThrowIfCancellationRequested();
EnableForeignKeys(tuple.Table);
}
using (token.MeasureTime(l => export.InDB().UnsafeUpdate().Set(s => s.ReseedIds, s => l).Execute()))
{
var tablesToUpload = Schema.Current.Tables.Values.Where(t => DisconnectedLogic.GetStrategy(t.Type).Upload != Upload.None)
.SelectMany(t => t.TablesMList().Cast <ITable>().And(t)).Where(t => t.PrimaryKey.Identity).ToList();
var maxIdDictionary = tablesToUpload.ToDictionary(t => t,
t => DisconnectedTools.MaxIdInRange(t, machine.SeedMin, machine.SeedMax));
using (Connector.Override(newDatabase))
using (ObjectName.OverrideOptions(new ObjectNameOptions {
AvoidDatabaseName = true
}))
{
foreach (var table in tablesToUpload)
{
token.ThrowIfCancellationRequested();
long?max = maxIdDictionary.GetOrThrow(table);
DisconnectedTools.SetNextId(table, (max + 1) ?? machine.SeedMin);
}
}
}
CopyExport(export, newDatabase);
machine.InDB().UnsafeUpdate().Set(s => s.State, s => DisconnectedMachineState.Disconnected).Execute();
using (SqlServerConnector.Override(newDatabase))
using (ObjectName.OverrideOptions(new ObjectNameOptions {
AvoidDatabaseName = true
}))
machine.InDB().UnsafeUpdate().Set(s => s.State, s => DisconnectedMachineState.Disconnected).Execute();
using (token.MeasureTime(l => export.InDB().UnsafeUpdate().Set(s => s.BackupDatabase, s => l).Execute()))
BackupDatabase(machine, export, newDatabase);
using (token.MeasureTime(l => export.InDB().UnsafeUpdate().Set(s => s.DropDatabase, s => l).Execute()))
DropDatabase(newDatabase);
token.ThrowIfCancellationRequested();
export.InDB().UnsafeUpdate()
.Set(s => s.State, s => DisconnectedExportState.Completed)
.Set(s => s.Total, s => s.CalculateTotal())
.Execute();
}
catch (Exception e)
{
var ex = e.LogException();
export.InDB().UnsafeUpdate()
.Set(s => s.Exception, s => ex.ToLite())
.Set(s => s.State, s => DisconnectedExportState.Error)
.Execute();
OnExportingError(machine, export, e);
}
finally
{
runningExports.Remove(export);
DisconnectedMachineEntity.Current = null;
OnEndExporting();
}
}
});
runningExports.Add(export, new RunningExports(task, cancelationSource));
return(export);
}
public double Ratio(DisconnectedExportEntity estimation)
{
double total = (long)estimation.Total !.Value;
double result = 0;
if (Lock != null)
{
return(result);
}
result += (estimation.Lock !.Value) / total;
if (!CreateDatabase.HasValue)
{
return(result);
}
result += (estimation.CreateDatabase !.Value) / total;
if (!CreateSchema.HasValue)
{
return(result);
}
result += (estimation.CreateSchema !.Value) / total;
if (!DisableForeignKeys.HasValue)
{
return(result);
}
result += (estimation.DisableForeignKeys !.Value) / total;
result += Copies.Where(c => c.CopyTable.HasValue).Join(
estimation.Copies.Where(o => o.CopyTable.HasValue && o.CopyTable.Value > 0),
c => c.Type, o => o.Type, (c, o) => o.CopyTable !.Value / total).Sum();
if (!Copies.All(a => a.CopyTable.HasValue))
{
return(result);
}
if (!EnableForeignKeys.HasValue)
{
return(result);
}
result += (estimation.EnableForeignKeys !.Value) / total;
if (!ReseedIds.HasValue)
{
return(result);
}
result += (estimation.ReseedIds !.Value) / total;
if (!BackupDatabase.HasValue)
{
return(result);
}
result += (estimation.BackupDatabase !.Value) / total;
if (!DropDatabase.HasValue)
{
return(result);
}
result += (estimation.DropDatabase !.Value) / total;
return(result);
}
