/// <summary>
/// Initializes the data feed for the specified job and algorithm
/// </summary>
public void Initialize(IAlgorithm algorithm, AlgorithmNodePacket job, IResultHandler resultHandler, IMapFileProvider mapFileProvider, IFactorFileProvider factorFileProvider, IDataProvider dataProvider)
{
if (!(job is LiveNodePacket))
{
throw new ArgumentException("The LiveTradingDataFeed requires a LiveNodePacket.");
}
_cancellationTokenSource = new CancellationTokenSource();
_algorithm = algorithm;
_job = (LiveNodePacket)job;
_resultHandler = resultHandler;
_timeProvider = GetTimeProvider();
_dataQueueHandler = GetDataQueueHandler();
_dataProvider = dataProvider;
_dataCacheProvider = new SingleEntryDataCacheProvider(dataProvider);
_frontierTimeProvider = new ManualTimeProvider(_timeProvider.GetUtcNow());
_customExchange = new BaseDataExchange("CustomDataExchange")
{
SleepInterval = 10
};
// sleep is controlled on this exchange via the GetNextTicksEnumerator
_exchange = new BaseDataExchange("DataQueueExchange")
{
SleepInterval = 0
};
_exchange.AddEnumerator(DataQueueHandlerSymbol, GetNextTicksEnumerator());
_subscriptions = new SubscriptionCollection();
_bridge = new BusyBlockingCollection <TimeSlice>();
_universeSelection = new UniverseSelection(this, algorithm);
// run the exchanges
Task.Run(() => _exchange.Start(_cancellationTokenSource.Token));
Task.Run(() => _customExchange.Start(_cancellationTokenSource.Token));
// this value will be modified via calls to AddSubscription/RemoveSubscription
var ffres = Time.OneMinute;
_fillForwardResolution = Ref.Create(() => ffres, v => ffres = v);
// wire ourselves up to receive notifications when universes are added/removed
var start = _timeProvider.GetUtcNow();
algorithm.UniverseManager.CollectionChanged += (sender, args) =>
{
switch (args.Action)
{
case NotifyCollectionChangedAction.Add:
foreach (var universe in args.NewItems.OfType <Universe>())
{
var config = universe.Configuration;
var marketHoursDatabase = MarketHoursDatabase.FromDataFolder();
var exchangeHours = marketHoursDatabase.GetExchangeHours(config);
Security security;
if (!_algorithm.Securities.TryGetValue(config.Symbol, out security))
{
// create a canonical security object
security = new Security(exchangeHours, config, _algorithm.Portfolio.CashBook[CashBook.AccountCurrency], SymbolProperties.GetDefault(CashBook.AccountCurrency));
}
AddSubscription(new SubscriptionRequest(true, universe, security, config, start, Time.EndOfTime));
// Not sure if this is needed but left here because of this:
// https://github.com/QuantConnect/Lean/commit/029d70bde6ca83a1eb0c667bb5cc4444bea05678
UpdateFillForwardResolution();
}
break;
case NotifyCollectionChangedAction.Remove:
foreach (var universe in args.OldItems.OfType <Universe>())
{
RemoveSubscription(universe.Configuration);
}
break;
default:
throw new NotImplementedException("The specified action is not implemented: " + args.Action);
}
};
}
/// <summary>
/// Initializes the data feed for the specified job and algorithm
/// </summary>
public void Initialize(IAlgorithm algorithm, AlgorithmNodePacket job, IResultHandler resultHandler,
IMapFileProvider mapFileProvider, IFactorFileProvider factorFileProvider,
IDataProvider dataProvider, IDataFeedSubscriptionManager subscriptionManager)
{
if (!(job is LiveNodePacket))
{
throw new ArgumentException("The LiveTradingDataFeed requires a LiveNodePacket.");
}
_cancellationTokenSource = new CancellationTokenSource();
_algorithm = algorithm;
_job = (LiveNodePacket)job;
_resultHandler = resultHandler;
_timeProvider = GetTimeProvider();
_dataQueueHandler = GetDataQueueHandler();
_dataProvider = dataProvider;
_dataCacheProvider = new SingleEntryDataCacheProvider(dataProvider);
_frontierTimeProvider = new ManualTimeProvider(_timeProvider.GetUtcNow());
_customExchange = new BaseDataExchange("CustomDataExchange")
{
SleepInterval = 10
};
// sleep is controlled on this exchange via the GetNextTicksEnumerator
_exchange = new BaseDataExchange("DataQueueExchange")
{
SleepInterval = 0
};
_exchange.AddEnumerator(DataQueueHandlerSymbol, GetNextTicksEnumerator());
_subscriptions = subscriptionManager.DataFeedSubscriptions;
_universeSelection = subscriptionManager.UniverseSelection;
// run the exchanges
Task.Run(() => _exchange.Start(_cancellationTokenSource.Token));
Task.Run(() => _customExchange.Start(_cancellationTokenSource.Token));
IsActive = true;
// wire ourselves up to receive notifications when universes are added/removed
var start = _timeProvider.GetUtcNow();
algorithm.UniverseManager.CollectionChanged += (sender, args) =>
{
switch (args.Action)
{
case NotifyCollectionChangedAction.Add:
foreach (var universe in args.NewItems.OfType <Universe>())
{
var config = universe.Configuration;
var marketHoursDatabase = MarketHoursDatabase.FromDataFolder();
var exchangeHours = marketHoursDatabase.GetExchangeHours(config);
Security security;
if (!_algorithm.Securities.TryGetValue(config.Symbol, out security))
{
// create a canonical security object
security = new Security(
exchangeHours,
config,
_algorithm.Portfolio.CashBook[CashBook.AccountCurrency],
SymbolProperties.GetDefault(CashBook.AccountCurrency),
_algorithm.Portfolio.CashBook
);
}
AddSubscription(new SubscriptionRequest(true, universe, security, config, start, Time.EndOfTime));
}
break;
case NotifyCollectionChangedAction.Remove:
foreach (var universe in args.OldItems.OfType <Universe>())
{
RemoveSubscription(universe.Configuration);
}
break;
default:
throw new NotImplementedException("The specified action is not implemented: " + args.Action);
}
};
}
