private void IncrementReferenceCountNoRecurse(BackupSetReference backupset, BlobLocation blocation, byte[] blobhash, int amount)
{
bool originallyshallow = blocation.TotalNonShallowReferenceCount == 0;
int? refCount = blocation.GetBSetReferenceCount(backupset);
int newRefCount = refCount.GetValueOrDefault(0) + amount;
blocation.SetBSetReferenceCount(backupset, newRefCount);
if (newRefCount == 0)
{
blocation.RemoveBSetReference(backupset);
}
else if (newRefCount < 0)
{
throw new Exception("Negative reference count in blobstore");
}
if (blocation.BlockHashes == null) // Can't delete from disk if this is a multiblock reference (does not directly store data on disk)
{
if (blocation.TotalNonShallowReferenceCount == 0)
{
if (!originallyshallow)
{
try
{
if (blocation.EncryptedHash == null)
{
throw new Exception("Hash should not be null");
}
Dependencies.DeleteBlob(blocation.EncryptedHash, blocation.RelativeFilePath);
}
catch (Exception e)
{
throw new Exception("Error deleting unreferenced file.", e);
}
}
}
}
if (blocation.TotalReferenceCount == 0)
{
IndexStore.Remove(blobhash);
}
}
