// Constructor
public FileSyncAgent(SyncJob job)
{
this._job = job;
// Instantiates providers
actProvider = SyncClient.GetSyncActionsProvider(this._job.IntermediaryStorage.Path);
mdProvider = SyncClient.GetMetaDataProvider(_job.IntermediaryStorage.Path, _job.SyncSource.ID);
}
// Constructor
public FileSyncAgent(SyncJob job)
{
this._job = job;
// Instantiates providers
actProvider = SyncClient.GetSyncActionsProvider(this._job.IntermediaryStorage.Path);
mdProvider = SyncClient.GetMetaDataProvider(_job.IntermediaryStorage.Path, _job.SyncSource.ID);
}
private Metadata UpdateSyncSourceMetadata()
{
//read metadata of the current folder stored in the database
Metadata mdCurrentOld = mdProvider.Load(_job.SyncSource.ID, SourceOption.SOURCE_ID_EQUALS);
//read metadata of the current folder in file system
Metadata mdCurrent = MetaDataProvider.Generate(_job.SyncSource.Path, _job.SyncSource.ID, false, false, true);
//Update metadata
mdProvider.Update(mdCurrentOld, mdCurrent);
return(mdCurrent);
}
/// <summary>
/// Generate the sync preview containing actions to be executed.
/// The returned SyncPreviewResult can then be passed to Synchronize method
/// as an argument for the actions to be executed.
/// </summary>
/// <exception cref="DirectoryNotFoundException"></exception>
public SyncPreviewResult GenerateSyncPreview(StatusCallbackDelegate statusCallback)
{
OnStatusChanged(new SyncStatusChangedEventArgs(m_ResourceManager.GetString("lbl_peparingToSync")));
// Load actions to be executed.
IList <SyncAction> actions = actProvider.Load(_job.SyncSource.ID, SourceOption.SOURCE_ID_NOT_EQUALS);
// Generate current folder's metadata
FileMetaData currentItems = MetaDataProvider.GenerateFileMetadata(_job.SyncSource.Path, _job.SyncSource.ID, false, statusCallback);
// Load current folder metadata from database
FileMetaData oldCurrentItems = mdProvider.LoadFileMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_EQUALS);
// Load the other folder metadata from database
FileMetaData oldOtherItems = mdProvider.LoadFileMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_NOT_EQUALS);
return(new SyncPreviewResult(actions, currentItems, oldCurrentItems, oldOtherItems));
}
private void SaveActionsAndDirtyFiles(IList <SyncAction> actions)
{
FileMetaData fileMetaData = MetaDataProvider.GenerateFileMetadata(_job.IntermediaryStorage.DirtyFolderPath,
"", false, true);
int totalProgress = actions.Count;
int currProgress = 0;
foreach (SyncAction a in actions)
{
if (!Validator.SyncJobParamsValidated(_job.Name, _job.IntermediaryStorage.Path, _job.SyncSource.Path, null))
{
return;
}
try
{
OnProgressChanged(new SyncProgressChangedEventArgs(++currProgress, totalProgress));
OnSyncFileChanged(new SyncFileChangedEventArgs(a.ChangeType, a.RelativeFilePath));
FileMetaDataItem item = new FileMetaDataItem("", a.RelativeFilePath, a.FileHash, DateTime.Now, 0, 0);
if (a.ChangeType == ChangeType.NEWLY_CREATED && !fileMetaData.MetaDataItems.Contains(item, new FileMetaDataItemComparer()))
{
SyncExecutor.CopyToDirtyFolderAndUpdateActionTable(a, _job);
}
else
{
actProvider.Add(a);
}
log.Add(new LogActivity(a.RelativeFilePath, a.ChangeType.ToString(), "SUCCESS"));
}
catch (OutOfDiskSpaceException)
{
log.Add(new LogActivity(a.RelativeFilePath, a.ChangeType.ToString(), "FAIL"));
throw;
}
catch (Exception)
{
log.Add(new LogActivity(a.RelativeFilePath, a.ChangeType.ToString(), "FAIL"));
throw;
}
}
}
private void SyncEmptyFolders()
{
//read metadata of the current folder in file system
FolderMetadata currentItems = MetaDataProvider.GenerateFolderMetadata(_job.SyncSource.Path, _job.SyncSource.ID, false, false, true);
//read the folder metadata of current folder stored in database
FolderMetadata oldCurrentItems = mdProvider.LoadFolderMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_EQUALS);
//read folder metadata of the other source stored in the database
FolderMetadata otherItems = mdProvider.LoadFolderMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_NOT_EQUALS);
//get the difference between current folder metadata with its previous state (from previous sync session).
FolderMetadataComparer comparer1 = new FolderMetadataComparer(oldCurrentItems, currentItems);
//get the difference between current folder metadata with the other folder's previous metadata
FolderMetadataComparer compare2 = new FolderMetadataComparer(currentItems, otherItems);
FolderMetadataComparer comparer3 = new FolderMetadataComparer(oldCurrentItems.FolderMetadataItems, compare2.LeftOnly);
FolderMetadataComparer comparer4 = new FolderMetadataComparer(compare2.RightOnly, comparer1.LeftOnly);
List <FolderMetadataItem> temps = comparer3.Both.ToList();
temps.Sort(new FolderMetadataItemComparer());
temps.Reverse();
foreach (FolderMetadataItem item in temps)
{
SyncExecutor.DeleteFolder(this._job.SyncSource.Path, item.RelativePath, true);
}
foreach (FolderMetadataItem item in comparer4.LeftOnly)
{
if (item.IsEmpty == 1)
{
SyncExecutor.CreateFolder(this._job.SyncSource.Path, item.RelativePath);
}
}
currentItems = MetaDataProvider.GenerateFolderMetadata(_job.SyncSource.Path, _job.SyncSource.ID, false,
false, true);
mdProvider.UpdateFolderMetadata(oldCurrentItems, currentItems, false);
}
/// <summary>
/// Generates SyncActions to be executed by other PC by comparing the metadata
/// of current SyncSource and the metadata of other PC.
/// </summary>
private IList <SyncAction> GenerateActions()
{
//Metadata mdCurrent = UpdateSyncSourceMetadata();
//Metadata mdOther = mdProvider.Load(_job.SyncSource.ID, SourceOption.SOURCE_ID_NOT_EQUALS);
FileMetaData mdCurrent = MetaDataProvider.GenerateFileMetadata(
_job.SyncSource.Path, _job.SyncSource.ID, false, false);
FileMetaData mdOldCurrent = mdProvider.LoadFileMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_EQUALS);
mdProvider.UpdateFileMetadata(mdOldCurrent, mdCurrent);
FileMetaData mdOther = mdProvider.LoadFileMetadata(_job.SyncSource.ID, SourceOption.SOURCE_ID_NOT_EQUALS);
//generate list of sync actions by comparing 2 metadata
var differences = new FileMetaDataComparer(mdCurrent, mdOther);
return(actProvider.Generate(mdCurrent.SourceId,
differences.LeftOnly,
differences.RightOnly,
differences.BothModified));
}
