private void MirrorGroup(FileGroup group)
{
using (_engine = new MirrorMaker(_progress))
{
try
{
_engine.StartingDirectory += OnStartingDirectory;
_engine.StartingFile += OnStartingFile;
_engine.ItemHandlingError += OnItemHandlingError;
string destinationSubFolder = group.GetDestinationSubFolder(DestinationRootForThisUser);
_progress.WriteVerbose("[{0}] Source={1}", group.Name, group.RootFolder);
_progress.WriteVerbose("[{0}] Destination={1}", group.Name, destinationSubFolder);
//_engine.PreviewMode = false;
_engine.Run(group.RootFolder, destinationSubFolder);
if (_engine.WasCancelled)
{
_currentGroup.Disposition = FileGroup.DispositionChoice.Cancelled;
}
else
{
group.Disposition = FileGroup.DispositionChoice.WasBackedUp;
}
}
catch (IOException error)
{
_gotIOExceptionProbablyDiskFull = true;
//enhance: we could clarify that it was partially backed up
_currentGroup.Disposition = FileGroup.DispositionChoice.NotEnoughRoom;
_progress.WriteWarning(error.Message);
}
if (GroupProgress != null)
{
GroupProgress.Invoke();
}
}
}
public void GatherPreview()
{
/* enhance: we could try to deal with the situation where a lower-priority group
* is hogging space from a newly enlarged higher-priority group. We'd have to
* scan ahead, perhaps first collecting the current on-backup sizes of each.
*
* Then, as we go through the groups, we could keep going so long as deleting
* some lower-priority group would allow us to keep going.
*/
_alreadyAccountedFor = new HashSet <string>();
_cancelRequested = false;
_files = 0;
ApprovedChangeInKB = 0;
//PredictedChangeInKiloBytes = 0;
_totalFilesThatWillBeBackedUp = 0;
var limitHasBeenReached = false;
foreach (var group in _groups)
{
if (_cancelRequested)
{
break;
}
_currentGroup = group; //used by callbacks
group.ClearStatistics();
if (group.Disposition == FileGroup.DispositionChoice.Hide)
{
_progress.WriteMessage("Skipping preview of group {0}", group.Name);
continue;
}
_progress.WriteMessage("Beginning preview of group {0}", group.Name);
Debug.Assert(!string.IsNullOrEmpty(group.RootFolder), "should have been weeded out already");
Debug.Assert(SafeIO.Directory.Exists(group.RootFolder), "should have been weeded out already");
if (limitHasBeenReached)
{
//don't even investigate.
//NB: there might actually be enough room, if this group is smaller
//than the first one which was too big. Or algorithm doesn't try
//to fit it in.
group.Disposition = FileGroup.DispositionChoice.NotEnoughRoom;
InvokeGroupProgress();
continue;
}
group.Disposition = FileGroup.DispositionChoice.Calculating;
InvokeGroupProgress();
string destinationSubFolder = group.GetDestinationSubFolder(DestinationRootForThisUser);
using (_engine = new MirrorMaker(_progress))
{
_engine.StartingDirectory += OnStartingDirectory;
_engine.StartingFile += OnStartingFile;
_engine.Run(group.RootFolder, destinationSubFolder);
var groupsChangeInKB = (long)Math.Ceiling(group.NetChangeInBytes / 1024.0);
//is there room to fit in this whole group?
if (ApprovedChangeInKB + groupsChangeInKB < _totalAvailableOnDeviceInKilobytes)
{
ApprovedChangeInKB = groupsChangeInKB;
_totalFilesThatWillBeBackedUp += group.UpdateFileCount + group.NewFileCount;
group.Disposition = FileGroup.DispositionChoice.WillBeBackedUp;
}
else
{
limitHasBeenReached = true; //nb: remove if/when we go to the system below of deleting
group.Disposition = FileGroup.DispositionChoice.NotEnoughRoom;
}
InvokeGroupProgress();
_files = 0;
}
_engine = null;
}
}
public void Run()
{
_cancelRequested = false;
_alreadyAccountedFor = new HashSet <string>();
try
{
foreach (var group in _groups)
{
if (_cancelRequested)
{
break;
}
_currentGroup = group; //used by callbacks
try
{
if (group.Disposition == FileGroup.DispositionChoice.Hide)
{
_progress.WriteMessage("Skipping group {0}", group.Name);
continue;
}
if (_gotIOExceptionProbablyDiskFull)
{
group.Disposition = FileGroup.DispositionChoice.NotEnoughRoom;
continue;
}
_progress.WriteMessage("Beginning group {0}", group.Name);
if (group.Disposition == FileGroup.DispositionChoice.NotEnoughRoom)
{
continue;
}
group.ClearStatistics();
group.Disposition = FileGroup.DispositionChoice.Synchronizing;
InvokeGroupProgress();
MirrorGroup(group);
InvokeGroupProgress();
}
catch (Exception error)
{
var message = "Exception processing group: " + group.Name;
_progress.WriteError(message);
_progress.WriteException(error);
UsageReporter.ReportException(false, "backup", error, message);
}
_engine = null;
_progress.WriteMessage("Controller finished normally.");
//we don't want to send, say, 100 errors just because the drive is full. Let's just send one.
if (_firstErrorMessage != null)
{
UsageReporter.SendEvent("Backup", "file error(just the 1st one)", "file error(just the 1st one)", _firstErrorMessage, 0);
}
}
// Program.ReportToGoogleAnalytics("FinishedBackup", "filesBackedUp", _totalFilesThatWillBeBackedUp);
/* Program.ReportToGoogleAnalytics("finishedUpdated","updated", _engine.UpdatedCount);
* Program.ReportToGoogleAnalytics("finishedCreated", "created", _engine.CreatedCount);
* Program.ReportToGoogleAnalytics("finishedDeleted", "deleted", _engine.DeletedCount);
*/
}
finally
{
CleanupTempFiles();
}
}