public RestorePoint(RestorePoint previousPoint, Dictionary <string, FileRestoreCopyInfo> info, DateTime creationDate)
{
PreviousPoint = previousPoint;
Id = _nextId++;
Info = info;
CreationDate = creationDate;
}
public long CountLeftPoints(RestorePoint lastPoint)
{
long numberOfLeftPoints = 0;
var isNumberSet = false;
foreach (var algorithm in Algorithms)
{
if (MinimumFlag)
{
// minimum
if (algorithm.CountLeftPoints(lastPoint) < numberOfLeftPoints || !isNumberSet)
{
isNumberSet = true;
numberOfLeftPoints = algorithm.CountLeftPoints(lastPoint);
}
}
else
{
// maximum
if (algorithm.CountLeftPoints(lastPoint) > numberOfLeftPoints || !isNumberSet)
{
isNumberSet = true;
numberOfLeftPoints = algorithm.CountLeftPoints(lastPoint);
}
}
}
return(numberOfLeftPoints);
}
public RestorePoint CreateBackup(RestorePoint lastPoint, List <string> objectsForBackup, BackupStoringAlgorithm storingAlgorithm)
{
var list = new Dictionary <string, FileRestoreCopyInfo>();
foreach (var filePath in objectsForBackup)
{
list.Add(filePath, new FileRestoreCopyInfo(filePath, new FileInfo(filePath).Length, DateTimeProvider.Now, storingAlgorithm.BackupPath));
// storingAlgorithm.CopyFile(filePath);
}
return(new FullBackupPoint(lastPoint, list, DateTimeProvider.Now));
}
public long CountLeftPoints(RestorePoint lastPoint)
{
long k = 0;
var point = lastPoint;
while (point != null && (point.CreationDate >= Date || point is IncrementalBackupPoint))
{
point = point.PreviousPoint;
k++;
}
return(k);
}
public RestorePoint CreateBackup(RestorePoint lastPoint, List <string> objectsForBackup, BackupStoringAlgorithm storingAlgorithm)
{
var lastFullBackupPoint = lastPoint;
while (lastFullBackupPoint != null && !(lastFullBackupPoint is FullBackupPoint))
{
lastFullBackupPoint = lastFullBackupPoint.PreviousPoint;
}
if (lastFullBackupPoint == null)
{
throw new IncrementalBackupCannotBeFirstException();
}
var list = new Dictionary <string, FileRestoreCopyInfo>();
foreach (var filePath in objectsForBackup)
{
// Упрощение: Если нет, или изменился размер файла
if (!lastPoint.Info.ContainsKey(filePath) ||
lastPoint.Info[filePath].BackupSize != new FileInfo(filePath).Length)
{
var point = lastPoint;
while (!point.Info.ContainsKey(filePath) && !(point is FullBackupPoint))
{
point = point.PreviousPoint;
}
var size = new FileInfo(filePath).Length;
if (!point.Info.ContainsKey(filePath))
{
size = Math.Abs(size - point.Info[filePath].BackupSize);
}
list.Add(filePath, new FileRestoreCopyInfo(filePath, size, DateTimeProvider.Now, storingAlgorithm.BackupPath));
// storingAlgorithm.CopyFile(filePath);
}
}
if (list.Count == 0)
{
throw new NoChangesForIncrementalBackupException();
}
return(new IncrementalBackupPoint(lastPoint, list, DateTimeProvider.Now));
}
public RestorePoint Clean(RestorePoint lastPoint, out bool areMorePointsLeft)
{
areMorePointsLeft = false;
var point = lastPoint;
RestorePoint prevPoint = null;
while (point != null && (point.CreationDate >= Date || point is IncrementalBackupPoint))
{
prevPoint = point;
point = point.PreviousPoint;
}
if (prevPoint != null)
{
prevPoint.PreviousPoint = null;
}
return(lastPoint);
}
public RestorePoint Clean(RestorePoint lastPoint, out bool areMorePointsLeft)
{
ICleaningAlgorithm selectedAlgorithm = null;
long numberOfLeftPoints = 0;
var isNumberSet = false;
foreach (var algorithm in Algorithms)
{
if (MinimumFlag)
{
// minimum
if (algorithm.CountLeftPoints(lastPoint) < numberOfLeftPoints || !isNumberSet)
{
isNumberSet = true;
numberOfLeftPoints = algorithm.CountLeftPoints(lastPoint);
selectedAlgorithm = algorithm;
}
}
else
{
// maximum
if (algorithm.CountLeftPoints(lastPoint) > numberOfLeftPoints || !isNumberSet)
{
isNumberSet = true;
numberOfLeftPoints = algorithm.CountLeftPoints(lastPoint);
selectedAlgorithm = algorithm;
}
}
}
if (selectedAlgorithm == null)
{
throw new NullReferenceException("Nothing selected for cleaning algorithm");
}
return(selectedAlgorithm.Clean(lastPoint, out areMorePointsLeft));
}
public IncrementalBackupPoint(RestorePoint previousPoint, Dictionary <string, FileRestoreCopyInfo> info, DateTime creationDate) : base(previousPoint, info, creationDate)
{
}
