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);
}
