public static JournalFile ( string baseName, int version ) : string | ||
baseName | string | |
version | int | |
Результат | string |
public JournaledMemTable(string baseFileName, int version) { _baseFileName = baseFileName; _version = version; _memTable = new MemTable(); // If the journal exists from a previous run, then load its data into the memtable string journalFile = Config.JournalFile(baseFileName, version); if (File.Exists(journalFile)) { var journalReader = new JournalReader(baseFileName, version); try { foreach (var pair in journalReader.Enumerate()) { _memTable.Add(pair.Key, pair.Value); } } finally { journalReader.Close(); } _journal = new JournalWriter(baseFileName, version, true); } else { _journal = new JournalWriter(baseFileName, version, false); } }
public JournalWriter(string baseFileName, int version, bool append) { _fileName = Config.JournalFile(baseFileName, version); FileMode fileMode = append ? FileMode.Append : FileMode.Create; _writer = new BinaryWriter(new FileStream(_fileName, fileMode, FileAccess.Write, FileShare.None, 1024, FileOptions.SequentialScan)); }
#pragma warning restore 420 private void CheckForIncompleteJournalRotation(string baseFileName, int currentMemTableVersion) { int previousMemTableVersion = currentMemTableVersion - 1; // Is there a left-over journal from a previous rotation that was aborted while in rotation. if (File.Exists(Config.JournalFile(baseFileName, previousMemTableVersion))) { var memTable = new JournaledMemTable(baseFileName, previousMemTableVersion); memTable.WriteToSortedBlockTable(_manifest); memTable.Close(); } }
public JournalReader(string baseFileName, int version) { _fileName = Config.JournalFile(baseFileName, version); _reader = new BinaryReader(new FileStream(_fileName, FileMode.Open, FileAccess.Read, FileShare.None, 1024, false)); }