private void LoadDatabaseFromSnapshot()
{
// I lied, we won't load anything
_currentVersion = 0;
_tradingRepository.OrderBook().DeleteMany(
Builders <OrderBookEntry> .Filter.Where(e => true)
);
_tradingRepository.HiddenOrders().DeleteMany(
Builders <HiddenOrderEntry> .Filter.Where(e => true)
);
_tradingRepository.TransactionHistory().DeleteMany(
Builders <TransactionHistoryEntry> .Filter.Where(e => true)
);
_tradingRepository.OrderHistory().DeleteMany(
Builders <OrderHistoryEntry> .Filter.Where(e => true)
);
_accountRepository.Accounts().DeleteMany(
new BsonDocumentFilterDefinition <AccountEntry>(new BsonDocument())
);
// This enables the version control semaphore
_versionControl.Initialize(_currentVersion);
}
static void GUITest_Init()
{
UVCProcessPopup.Init(VersionControl.Initialize(CommandLine.EmptyHandler), false, true, null, false);
}
static void CoreTest_Init()
{
VersionControl.Initialize(OnProcessExit);
}
/// <summary>
/// Raises the Init Button event.
/// </summary>
/// TODO: Implement button
public static void OnButton_Init(UVCBrowser browser)
{
browser.DisableGUI();
UVCProcessPopup.Init(VersionControl.Initialize(CommandLine.EmptyHandler), true, true, browser.OnProcessStop, true);
}
/// <inheritdoc />
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
try
{
var beforeIntegration = true;
// This enables the version control semaphore
_versionControl.Initialize(_currentVersion);
_logger.LogInformation(
$"Initialized {GetType().Name}, listening for wallet event entries to be processed");
while (!_stopped)
{
// We can batch events by using a second parameter, just make sure to consume the entire version
var missingEvents = await _eventHistoryService.LoadMissingEvents(_currentVersion);
if (missingEvents.Count > 0)
{
// Only integrate new events as long as no one is currently assuming a fixed current version
_versionControl.IncreaseVersion(() =>
{
foreach (var missingEvent in missingEvents)
{
if (missingEvent is WalletEventEntry walletEvent)
{
AbstractProvider.ProviderLookup[walletEvent.CoinSymbol].ProcessEvent(walletEvent);
_logger.LogDebug(
$"Processed {walletEvent.CoinSymbol} event {walletEvent.GetType().Name}");
}
var eventVersionNumber = missingEvent.VersionNumber;
if (eventVersionNumber == _currentVersion)
{
continue;
}
if (eventVersionNumber == _currentVersion + 1)
{
_currentVersion++;
continue;
}
throw new Exception(
$"Integrity error: the event ID {missingEvent.Id} attempted to jump version from {_currentVersion} to {eventVersionNumber}. This cannot be recovered from and requires a manual fix by administrator");
}
if (beforeIntegration)
{
beforeIntegration = false;
_walletOperationService.HideWalletsAfterVersionNumber(_currentVersion);
}
_logger.LogInformation($"Current version is increased to {_currentVersion}");
return(_currentVersion);
});
_listeningInterval = 50;
}
else
{
if (beforeIntegration)
{
_versionControl.ExecuteUsingFixedVersion(_currentVersion =>
{
beforeIntegration = false;
_walletOperationService.HideWalletsAfterVersionNumber(_currentVersion);
});
}
if (_listeningInterval < _listeningIntervalMax)
{
_listeningInterval += 50;
}
await Task.Delay(TimeSpan.FromMilliseconds(_listeningInterval), stoppingToken);
_logger.LogDebug($"{GetType().Name} is still listening for event entries...");
}
}
}
catch (Exception e)
{
_logger.LogError($"{e.Message}\n{e.StackTrace}");
Program.Shutdown();
throw;
}
}