public void Commit() { _bufferManager.FlushAll(_transactionNumber); var lsn = new CommitRecord(_logManager, _bufferManager, _transactionNumber) .WriteToLog(); _logManager.Flush(lsn); }
public void CanRecover() { _recoveryManager = new RecoveryManager(_bufferManager, _logManager, 6); var block = new Block(RandomFilename, 0); var buffer = _bufferManager.Pin(block); _recoveryManager.Recover(); _bufferManager.Unpin(buffer); _bufferManager.FlushAll(6); var page = _fileManager.ResolvePage(); _ = page.Read(new Block(_name, 0)); var enumerator = _logManager.GetEnumerator(); var record = enumerator.Current; var checkpointRecord = new CheckpointRecord(_logManager, _bufferManager, record); Assert.AreEqual(LogRecordType.Checkpoint, checkpointRecord.Type); Assert.AreEqual(1, checkpointRecord.Transactions.Length); Assert.AreEqual(6, checkpointRecord.Transactions[0]); }
public void SetIntCanPerformUndo() { _logRecord = new SetIntRecord( _logManager, _bufferManager, 3, _putToBlock, 6, 123); var lsn = _logRecord.WriteToLog(); _logManager.Flush(lsn); _logRecord.Undo(); _bufferManager.FlushAll(3); var page = _fileManager.ResolvePage(); page.Read(_putToBlock); var canRead = page.GetInt(6, out var result); Assert.IsTrue(canRead); Assert.AreEqual(123, result); }
public void CanPinBufferWriteAndFlush() { _poolStrategy = new LRUBufferPoolStrategy(_logManager, _fileManager, 3); _bufferManager = new BufferManager(_fileManager, _logManager, _poolStrategy, null, null); var filename = RandomFilename; var pageFormatter = new BasePageFormatter(); var buffer1 = _bufferManager.PinNew(filename, pageFormatter); buffer1.SetInt(0, 123, 1, 1); _bufferManager.FlushAll(1); _bufferManager.Unpin(buffer1); var page = _fileManager.ResolvePage(); var canRead = page.Read(new Block(filename, 0)); var canGetValue = page.GetInt(0, out var value); Assert.IsFalse(buffer1.IsPinned); Assert.IsTrue(canRead); Assert.IsTrue(canGetValue); Assert.AreEqual(123, value); }