private void ProcessFileCreate(PInvokeWin32.USN_RECORD usn, string volume, MFTSearcherCache db)
{
USNRecord record = USNRecord.ParseUSN(volume, usn);
db.AddRecord(volume, record);
Debug.WriteLine(string.Format(">>>> NewFile: {0}", record.FullPath));
if (RecordAddedEvent != null)
{
RecordAddedEvent(record);
}
}
public void AddRecord(string volume, USNRecord record)
{
EnsureVolumeExistInHashTable(volume);
if (!VolumeRecords[volume].ContainsKey(record.FRN))
{
lock (locker)
{
VolumeRecords[volume].Add(record.FRN, record);
}
}
}
public USNRecord FindByFrn(string volume, ulong frn)
{
if ((!VolumeRecords.ContainsKey(volume)))
{
throw new Exception(string.Format("DB not contain the volume: {0}", volume));
}
USNRecord result = null;
VolumeRecords[volume].TryGetValue(frn, out result);
return(result);
}
internal static void FillPath(string volume, USNRecord record, MFTSearcherCache db)
{
if (record == null)
{
return;
}
var fdSource = db.GetVolumeRecords(volume);
string fullpath = record.Name;
FindRecordPath(record, ref fullpath, fdSource);
record.FullPath = fullpath;
}
private static void FindRecordPath(USNRecord curRecord, ref string fullpath, Dictionary <ulong, USNRecord> fdSource)
{
if (curRecord.IsVolumeRoot)
{
return;
}
USNRecord nextRecord = null;
if (!fdSource.TryGetValue(curRecord.ParentFrn, out nextRecord))
{
return;
}
fullpath = string.Format("{0}{1}{2}", nextRecord.Name, Path.DirectorySeparatorChar, fullpath);
FindRecordPath(nextRecord, ref fullpath, fdSource);
}
private void ProcessRenameNewName(PInvokeWin32.USN_RECORD usn, string volume, MFTSearcherCache db)
{
USNRecord newRecord = USNRecord.ParseUSN(volume, usn);
db.UpdateRecord(volume, newRecord);
var oldRecord = db.FindByFrn(volume, usn.FRN);
if (oldRecord != null)
{
Debug.WriteLine(string.Format(">>>> RenameFile {0} to {1}", oldRecord.FullPath, newRecord.FullPath));
if (RecordRenameEvent != null)
{
RecordRenameEvent(oldRecord, newRecord);
}
}
}
private bool RealUpdateRecord(string volume, Dictionary <string, Dictionary <ulong, USNRecord> > source, USNRecord record)
{
if (source.ContainsKey(volume) && source[volume].ContainsKey(record.FRN))
{
lock (locker)
{
source[volume][record.FRN] = record;
}
return(true);
}
else
{
return(false);
}
}
public void UpdateRecord(string volume, USNRecord record)
{
RealUpdateRecord(volume, VolumeRecords, record);
}
