void LoadHashKeyIndex(uint hashKeyIndexFileId)
{
var reader = _fileCollection.GetFile(hashKeyIndexFileId).GetExclusiveReader();
_keyLen = (int)((IHashKeyIndex)_fileCollection.FileInfoByIdx(hashKeyIndexFileId)).KeyLen;
HashKeyIndex.SkipHeader(reader);
var keyBuf = ByteBuffer.NewSync(new byte[_keyLen]);
while (!reader.Eof)
{
var value = new StorageValue();
value.FileId = reader.ReadVUInt32();
value.FileOfs = reader.ReadVUInt32();
value.ContentLengthCompressedIsLeaf = reader.ReadVUInt32();
reader.ReadBlock(keyBuf);
_dict20.TryAdd(new ByteStructs.Key20(keyBuf), value);
}
}
void LoadInfoAboutFiles()
{
long latestGeneration = -1;
uint lastestTrLogFileId = 0;
var keyIndexes = new List <KeyValuePair <uint, long> >();
foreach (var fileInfo in _fileCollection.FileInfos)
{
var trLog = fileInfo.Value as IFileTransactionLog;
if (trLog != null)
{
if (trLog.Generation > latestGeneration)
{
latestGeneration = trLog.Generation;
lastestTrLogFileId = fileInfo.Key;
}
continue;
}
var keyIndex = fileInfo.Value as IKeyIndex;
if (keyIndex == null)
{
continue;
}
keyIndexes.Add(new KeyValuePair <uint, long>(fileInfo.Key, keyIndex.Generation));
}
if (keyIndexes.Count > 1)
{
keyIndexes.Sort((l, r) => Comparer <long> .Default.Compare(l.Value, r.Value));
}
var firstTrLogId = LinkTransactionLogFileIds(lastestTrLogFileId);
var firstTrLogOffset = 0u;
var hasKeyIndex = false;
while (keyIndexes.Count > 0)
{
var keyIndex = keyIndexes[keyIndexes.Count - 1];
keyIndexes.RemoveAt(keyIndexes.Count - 1);
var info = (IKeyIndex)_fileCollection.FileInfoByIdx(keyIndex.Key);
_nextRoot = LastCommited.NewTransactionRoot();
if (LoadKeyIndex(keyIndex.Key, info))
{
_lastCommited = _nextRoot;
_nextRoot = null;
firstTrLogId = info.TrLogFileId;
firstTrLogOffset = info.TrLogOffset;
hasKeyIndex = true;
break;
}
_fileCollection.MakeIdxUnknown(keyIndex.Key);
}
while (keyIndexes.Count > 0)
{
var keyIndex = keyIndexes[keyIndexes.Count - 1];
keyIndexes.RemoveAt(keyIndexes.Count - 1);
_fileCollection.MakeIdxUnknown(keyIndex.Key);
}
LoadTransactionLogs(firstTrLogId, firstTrLogOffset);
if (lastestTrLogFileId != firstTrLogId && firstTrLogId != 0 || !hasKeyIndex && _fileCollection.FileInfos.Any(p => p.Value.SubDBId == 0))
{
CreateIndexFile(CancellationToken.None);
}
new Compactor(this, CancellationToken.None).FastStartCleanUp();
_fileCollection.DeleteAllUnknownFiles();
}
