private static LiveSubscription CreateSubscription(IAlgorithm algorithm,
IResultHandler resultHandler,
Security security,
DateTime periodStart,
DateTime periodEnd)
{
IEnumerator <BaseData> enumerator = null;
if (security.SubscriptionDataConfig.IsCustomData)
{
//Subscription managers for downloading user data:
// TODO: Update this when warmup comes in, we back up so we can get data that should have emitted at midnight today
var subscriptionDataReader = new SubscriptionDataReader(
security.SubscriptionDataConfig,
periodStart, Time.EndOfTime,
resultHandler,
Time.EachTradeableDay(algorithm.Securities.Values, periodStart, periodEnd),
true
);
// wrap the subscription data reader with a filter enumerator
enumerator = SubscriptionFilterEnumerator.WrapForDataFeed(resultHandler, subscriptionDataReader, security, periodEnd);
}
return(new LiveSubscription(security, enumerator, periodStart, periodEnd, true, false));
}
private Subscription CreateSubscription(IResultHandler resultHandler, Security security, DateTime start, DateTime end, Resolution fillForwardResolution, bool userDefined)
{
var config = security.SubscriptionDataConfig;
var tradeableDates = Time.EachTradeableDay(security, start.Date, end.Date);
// ReSharper disable once PossibleMultipleEnumeration
if (!tradeableDates.Any())
{
if (userDefined)
{
_algorithm.Error(string.Format("No data loaded for {0} because there were no tradeable dates for this security.", security.Symbol));
}
return(null);
}
var symbolResolutionDate = userDefined ? (DateTime?)null : start;
// ReSharper disable once PossibleMultipleEnumeration
IEnumerator <BaseData> enumerator = new SubscriptionDataReader(config, security, start, end, resultHandler, tradeableDates, false, symbolResolutionDate);
// optionally apply fill forward logic, but never for tick data
if (config.FillDataForward && config.Resolution != Resolution.Tick)
{
enumerator = new FillForwardEnumerator(enumerator, security.Exchange, fillForwardResolution.ToTimeSpan(),
security.IsExtendedMarketHours, end, config.Resolution.ToTimeSpan());
}
// finally apply exchange/user filters
enumerator = SubscriptionFilterEnumerator.WrapForDataFeed(resultHandler, enumerator, security, end);
var subscription = new Subscription(security, enumerator, start, end, userDefined, false);
return(subscription);
}
/// <summary>
/// Configure the enumerator with aggregation/fill-forward/filter behaviors. Returns new instance if re-configured
/// </summary>
private IEnumerator <BaseData> ConfigureEnumerator(SubscriptionRequest request, bool aggregate, IEnumerator <BaseData> enumerator)
{
if (aggregate)
{
enumerator = new BaseDataCollectionAggregatorEnumerator(enumerator, request.Configuration.Symbol);
}
// optionally apply fill forward logic, but never for tick data
if (request.Configuration.FillDataForward && request.Configuration.Resolution != Resolution.Tick)
{
// copy forward Bid/Ask bars for QuoteBars
if (request.Configuration.Type == typeof(QuoteBar))
{
enumerator = new QuoteBarFillForwardEnumerator(enumerator);
}
var subscriptionConfigs = _subscriptions.Select(x => x.Configuration).Concat(new[] { request.Configuration });
UpdateFillForwardResolution(subscriptionConfigs);
enumerator = new FillForwardEnumerator(enumerator, request.Security.Exchange, _fillForwardResolution,
request.Security.IsExtendedMarketHours, request.EndTimeLocal, request.Configuration.Resolution.ToTimeSpan(), request.Configuration.DataTimeZone);
}
// optionally apply exchange/user filters
if (request.Configuration.IsFilteredSubscription)
{
enumerator = SubscriptionFilterEnumerator.WrapForDataFeed(_resultHandler, enumerator, request.Security, request.EndTimeLocal);
}
return(enumerator);
}
private Subscription CreateSubscription(Universe universe, IResultHandler resultHandler, Security security, DateTime startTimeUtc, DateTime endTimeUtc, IReadOnlyRef <TimeSpan> fillForwardResolution)
{
var config = security.SubscriptionDataConfig;
var localStartTime = startTimeUtc.ConvertFromUtc(config.TimeZone);
var localEndTime = endTimeUtc.ConvertFromUtc(config.TimeZone);
var tradeableDates = Time.EachTradeableDay(security, localStartTime, localEndTime);
// ReSharper disable once PossibleMultipleEnumeration
if (!tradeableDates.Any())
{
_algorithm.Error(string.Format("No data loaded for {0} because there were no tradeable dates for this security.", security.Symbol));
return(null);
}
// ReSharper disable once PossibleMultipleEnumeration
IEnumerator <BaseData> enumerator = new SubscriptionDataReader(config, localStartTime, localEndTime, resultHandler, tradeableDates, false);
// optionally apply fill forward logic, but never for tick data
if (config.FillDataForward && config.Resolution != Resolution.Tick)
{
enumerator = new FillForwardEnumerator(enumerator, security.Exchange, fillForwardResolution,
security.IsExtendedMarketHours, localEndTime, config.Resolution.ToTimeSpan());
}
// finally apply exchange/user filters
enumerator = SubscriptionFilterEnumerator.WrapForDataFeed(resultHandler, enumerator, security, localEndTime);
var timeZoneOffsetProvider = new TimeZoneOffsetProvider(security.SubscriptionDataConfig.TimeZone, startTimeUtc, endTimeUtc);
var subscription = new Subscription(universe, security, enumerator, timeZoneOffsetProvider, startTimeUtc, endTimeUtc, false);
return(subscription);
}
/// <summary>
/// Convenience method to wrap the enumerator and attach the data filter event to log and alery users of errors
/// </summary>
/// <param name="resultHandler">Result handler reference used to send errors</param>
/// <param name="enumerator">The source enumerator to be wrapped</param>
/// <param name="security">The security who's data is being enumerated</param>
/// <param name="endTime">The end time of the subscription</param>
/// <returns>A new instance of the <see cref="SubscriptionFilterEnumerator"/> class that has had it's <see cref="DataFilterError"/>
/// event subscribed to to send errors to the result handler</returns>
public static SubscriptionFilterEnumerator WrapForDataFeed(IResultHandler resultHandler, IEnumerator <BaseData> enumerator, Security security, DateTime endTime)
{
var filter = new SubscriptionFilterEnumerator(enumerator, security, endTime);
filter.DataFilterError += (sender, exception) =>
{
Log.Error("SubscriptionDataReader.MoveNext(): Error applying filter: " + exception.Message);
resultHandler.RuntimeError("Runtime error applying data filter. Assuming filter pass: " + exception.Message, exception.StackTrace);
};
return(filter);
}
/// <summary>
/// Creates an enumerator for the specified security/configuration
/// </summary>
private IEnumerator <BaseData> CreateSubscriptionEnumerator(Security security,
SubscriptionDataConfig config,
DateTime localStartTime,
DateTime localEndTime,
MapFileResolver mapFileResolver,
IEnumerable <DateTime> tradeableDates,
bool useSubscriptionDataReader,
bool aggregate)
{
IEnumerator <BaseData> enumerator;
if (useSubscriptionDataReader)
{
enumerator = new SubscriptionDataReader(config, localStartTime, localEndTime, _resultHandler, mapFileResolver,
_factorFileProvider, tradeableDates, false);
}
else
{
var sourceFactory = (BaseData)Activator.CreateInstance(config.Type);
enumerator = (from date in tradeableDates
let source = sourceFactory.GetSource(config, date, false)
let factory = SubscriptionDataSourceReader.ForSource(source, config, date, false)
let entriesForDate = factory.Read(source)
from entry in entriesForDate
select entry).GetEnumerator();
}
if (aggregate)
{
enumerator = new BaseDataCollectionAggregatorEnumerator(enumerator, config.Symbol);
}
// optionally apply fill forward logic, but never for tick data
if (config.FillDataForward && config.Resolution != Resolution.Tick)
{
enumerator = new FillForwardEnumerator(enumerator, security.Exchange, _fillForwardResolution,
security.IsExtendedMarketHours, localEndTime, config.Resolution.ToTimeSpan());
}
// optionally apply exchange/user filters
if (config.IsFilteredSubscription)
{
enumerator = SubscriptionFilterEnumerator.WrapForDataFeed(_resultHandler, enumerator, security, localEndTime);
}
return(enumerator);
}
/// <summary>
/// Configure the enumerator with aggregation/fill-forward/filter behaviors. Returns new instance if re-configured
/// </summary>
protected IEnumerator <BaseData> ConfigureEnumerator(SubscriptionRequest request, bool aggregate, IEnumerator <BaseData> enumerator)
{
if (aggregate)
{
enumerator = new BaseDataCollectionAggregatorEnumerator(enumerator, request.Configuration.Symbol);
}
enumerator = TryAddFillForwardEnumerator(request, enumerator, request.Configuration.FillDataForward);
// optionally apply exchange/user filters
if (request.Configuration.IsFilteredSubscription)
{
enumerator = SubscriptionFilterEnumerator.WrapForDataFeed(_resultHandler, enumerator, request.Security,
request.EndTimeLocal, request.Configuration.ExtendedMarketHours, false, request.ExchangeHours);
}
return(enumerator);
}
/// <summary>
/// Configure the enumerator with aggregation/fill-forward/filter behaviors. Returns new instance if re-configured
/// </summary>
private IEnumerator <BaseData> ConfigureEnumerator(SubscriptionRequest request, bool aggregate, IEnumerator <BaseData> enumerator)
{
if (aggregate)
{
enumerator = new BaseDataCollectionAggregatorEnumerator(enumerator, request.Configuration.Symbol);
}
// optionally apply fill forward logic, but never for tick data
if (request.Configuration.FillDataForward && request.Configuration.Resolution != Resolution.Tick)
{
enumerator = new FillForwardEnumerator(enumerator, request.Security.Exchange, _fillForwardResolution,
request.Security.IsExtendedMarketHours, request.EndTimeLocal, request.Configuration.Resolution.ToTimeSpan());
}
// optionally apply exchange/user filters
if (request.Configuration.IsFilteredSubscription)
{
enumerator = SubscriptionFilterEnumerator.WrapForDataFeed(_resultHandler, enumerator, request.Security, request.EndTimeLocal);
}
return(enumerator);
}
/// <summary>
/// Creates an enumerator for the specified security/configuration
/// </summary>
private IEnumerator <BaseData> CreateSubscriptionEnumerator(Security security,
SubscriptionDataConfig config,
DateTime localStartTime,
DateTime localEndTime,
MapFileResolver mapFileResolver,
IEnumerable <DateTime> tradeableDates)
{
IEnumerator <BaseData> enumerator = new SubscriptionDataReader(config, localStartTime, localEndTime, _resultHandler, mapFileResolver,
_factorFileProvider, tradeableDates, false);
// optionally apply fill forward logic, but never for tick data
if (config.FillDataForward && config.Resolution != Resolution.Tick)
{
enumerator = new FillForwardEnumerator(enumerator, security.Exchange, _fillForwardResolution,
security.IsExtendedMarketHours, localEndTime, config.Resolution.ToTimeSpan());
}
// optionally apply exchange/user filters
if (config.IsFilteredSubscription)
{
enumerator = SubscriptionFilterEnumerator.WrapForDataFeed(_resultHandler, enumerator, security, localEndTime);
}
return(enumerator);
}
/// <summary>
/// Creates a new subscription for the specified security
/// </summary>
/// <param name="request">The subscription request</param>
/// <returns>A new subscription instance of the specified security</returns>
protected Subscription CreateSubscription(SubscriptionRequest request)
{
Subscription subscription = null;
try
{
var localEndTime = request.EndTimeUtc.ConvertFromUtc(request.Security.Exchange.TimeZone);
var timeZoneOffsetProvider = new TimeZoneOffsetProvider(request.Security.Exchange.TimeZone, request.StartTimeUtc, request.EndTimeUtc);
IEnumerator <BaseData> enumerator;
if (request.Configuration.IsCustomData)
{
if (!Quandl.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Quandl.SetAuthCode(Config.Get("quandl-auth-token"));
}
// each time we exhaust we'll new up this enumerator stack
var refresher = new RefreshEnumerator <BaseData>(() =>
{
var dateInDataTimeZone = DateTime.UtcNow.ConvertFromUtc(request.Configuration.DataTimeZone).Date;
var enumeratorFactory = new BaseDataSubscriptionEnumeratorFactory(r => new[] { dateInDataTimeZone });
var factoryReadEnumerator = enumeratorFactory.CreateEnumerator(request, _dataFileProvider);
var maximumDataAge = TimeSpan.FromTicks(Math.Max(request.Configuration.Increment.Ticks, TimeSpan.FromSeconds(5).Ticks));
var fastForward = new FastForwardEnumerator(factoryReadEnumerator, _timeProvider, request.Security.Exchange.TimeZone, maximumDataAge);
return(new FrontierAwareEnumerator(fastForward, _frontierTimeProvider, timeZoneOffsetProvider));
});
// rate limit the refreshing of the stack to the requested interval
// At Tick resolution, it will refresh at full speed
// At Second and Minute resolution, it will refresh every second and minute respectively
// At Hour and Daily resolutions, it will refresh every 30 minutes
var minimumTimeBetweenCalls = Math.Min(request.Configuration.Increment.Ticks, TimeSpan.FromMinutes(30).Ticks);
var rateLimit = new RateLimitEnumerator(refresher, _timeProvider, TimeSpan.FromTicks(minimumTimeBetweenCalls));
_customExchange.AddEnumerator(request.Configuration.Symbol, rateLimit);
var enqueable = new EnqueueableEnumerator <BaseData>();
_customExchange.SetDataHandler(request.Configuration.Symbol, data =>
{
enqueable.Enqueue(data);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = enqueable;
}
else if (request.Configuration.Resolution != Resolution.Tick)
{
// this enumerator allows the exchange to pump ticks into the 'back' of the enumerator,
// and the time sync loop can pull aggregated trade bars off the front
switch (request.Configuration.TickType)
{
case TickType.Quote:
var quoteBarAggregator = new QuoteBarBuilderEnumerator(request.Configuration.Increment, request.Security.Exchange.TimeZone, _timeProvider);
_exchange.AddDataHandler(request.Configuration.Symbol, data =>
{
var tick = data as Tick;
if (tick.TickType == TickType.Quote)
{
quoteBarAggregator.ProcessData(tick);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
}
});
enumerator = quoteBarAggregator;
break;
case TickType.Trade:
default:
var tradeBarAggregator = new TradeBarBuilderEnumerator(request.Configuration.Increment, request.Security.Exchange.TimeZone, _timeProvider);
_exchange.AddDataHandler(request.Configuration.Symbol, data =>
{
var tick = data as Tick;
if (tick.TickType == TickType.Trade)
{
tradeBarAggregator.ProcessData(tick);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
}
});
enumerator = tradeBarAggregator;
break;
case TickType.OpenInterest:
var oiAggregator = new OpenInterestEnumerator(request.Configuration.Increment, request.Security.Exchange.TimeZone, _timeProvider);
_exchange.AddDataHandler(request.Configuration.Symbol, data =>
{
var tick = data as Tick;
if (tick.TickType == TickType.OpenInterest)
{
oiAggregator.ProcessData(tick);
}
});
enumerator = oiAggregator;
break;
}
}
else
{
// tick subscriptions can pass right through
var tickEnumerator = new EnqueueableEnumerator <BaseData>();
_exchange.SetDataHandler(request.Configuration.Symbol, data =>
{
tickEnumerator.Enqueue(data);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = tickEnumerator;
}
if (request.Configuration.FillDataForward)
{
var subscriptionConfigs = _subscriptions.Select(x => x.Configuration).Concat(new[] { request.Configuration });
UpdateFillForwardResolution(subscriptionConfigs);
enumerator = new LiveFillForwardEnumerator(_frontierTimeProvider, enumerator, request.Security.Exchange, _fillForwardResolution, request.Configuration.ExtendedMarketHours, localEndTime, request.Configuration.Increment);
}
// define market hours and user filters to incoming data
if (request.Configuration.IsFilteredSubscription)
{
enumerator = new SubscriptionFilterEnumerator(enumerator, request.Security, localEndTime);
}
// finally, make our subscriptions aware of the frontier of the data feed, prevents future data from spewing into the feed
enumerator = new FrontierAwareEnumerator(enumerator, _frontierTimeProvider, timeZoneOffsetProvider);
subscription = new Subscription(request.Universe, request.Security, request.Configuration, enumerator, timeZoneOffsetProvider, request.StartTimeUtc, request.EndTimeUtc, false);
}
catch (Exception err)
{
Log.Error(err);
}
return(subscription);
}
/// <summary>
/// Creates a new subscription for the specified security
/// </summary>
/// <param name="request">The subscription request</param>
/// <returns>A new subscription instance of the specified security</returns>
protected Subscription CreateDataSubscription(SubscriptionRequest request)
{
Subscription subscription = null;
try
{
var localEndTime = request.EndTimeUtc.ConvertFromUtc(request.Security.Exchange.TimeZone);
var timeZoneOffsetProvider = new TimeZoneOffsetProvider(request.Configuration.ExchangeTimeZone, request.StartTimeUtc, request.EndTimeUtc);
IEnumerator <BaseData> enumerator;
if (!_channelProvider.ShouldStreamSubscription(request.Configuration))
{
if (!Quandl.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Quandl.SetAuthCode(Config.Get("quandl-auth-token"));
}
if (!Tiingo.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Tiingo.SetAuthCode(Config.Get("tiingo-auth-token"));
}
var factory = new LiveCustomDataSubscriptionEnumeratorFactory(_timeProvider);
var enumeratorStack = factory.CreateEnumerator(request, _dataProvider);
_customExchange.AddEnumerator(request.Configuration.Symbol, enumeratorStack);
var enqueable = new EnqueueableEnumerator <BaseData>();
_customExchange.SetDataHandler(request.Configuration.Symbol, data =>
{
enqueable.Enqueue(data);
subscription.OnNewDataAvailable();
});
enumerator = enqueable;
}
else
{
var auxEnumerators = new List <IEnumerator <BaseData> >();
if (LiveAuxiliaryDataEnumerator.TryCreate(request.Configuration, _timeProvider, _dataQueueHandler,
request.Security.Cache, _mapFileProvider, _factorFileProvider, request.StartTimeLocal, out var auxDataEnumator))
{
auxEnumerators.Add(auxDataEnumator);
}
EventHandler handler = (_, _) => subscription?.OnNewDataAvailable();
enumerator = Subscribe(request.Configuration, handler);
if (request.Configuration.EmitSplitsAndDividends())
{
auxEnumerators.Add(Subscribe(new SubscriptionDataConfig(request.Configuration, typeof(Dividend)), handler));
auxEnumerators.Add(Subscribe(new SubscriptionDataConfig(request.Configuration, typeof(Split)), handler));
}
if (auxEnumerators.Count > 0)
{
enumerator = new LiveAuxiliaryDataSynchronizingEnumerator(_timeProvider, request.Configuration.ExchangeTimeZone, enumerator, auxEnumerators);
}
}
if (request.Configuration.FillDataForward)
{
var fillForwardResolution = _subscriptions.UpdateAndGetFillForwardResolution(request.Configuration);
enumerator = new LiveFillForwardEnumerator(_frontierTimeProvider, enumerator, request.Security.Exchange, fillForwardResolution, request.Configuration.ExtendedMarketHours, localEndTime, request.Configuration.Increment, request.Configuration.DataTimeZone);
}
// define market hours and user filters to incoming data
if (request.Configuration.IsFilteredSubscription)
{
enumerator = new SubscriptionFilterEnumerator(enumerator, request.Security, localEndTime, request.Configuration.ExtendedMarketHours, true, request.ExchangeHours);
}
// finally, make our subscriptions aware of the frontier of the data feed, prevents future data from spewing into the feed
enumerator = new FrontierAwareEnumerator(enumerator, _frontierTimeProvider, timeZoneOffsetProvider);
var subscriptionDataEnumerator = new SubscriptionDataEnumerator(request.Configuration, request.Security.Exchange.Hours, timeZoneOffsetProvider, enumerator, request.IsUniverseSubscription);
subscription = new Subscription(request, subscriptionDataEnumerator, timeZoneOffsetProvider);
}
catch (Exception err)
{
Log.Error(err);
}
return(subscription);
}
/// <summary>
/// Creates a new subscription for the specified security
/// </summary>
/// <param name="universe"></param>
/// <param name="security">The security to create a subscription for</param>
/// <param name="utcStartTime">The start time of the subscription in UTC</param>
/// <param name="utcEndTime">The end time of the subscription in UTC</param>
/// <returns>A new subscription instance of the specified security</returns>
protected Subscription CreateSubscription(Universe universe, Security security, DateTime utcStartTime, DateTime utcEndTime)
{
Subscription subscription = null;
try
{
var config = security.SubscriptionDataConfig;
var localStartTime = utcStartTime.ConvertFromUtc(config.TimeZone);
var localEndTime = utcEndTime.ConvertFromUtc(config.TimeZone);
var timeZoneOffsetProvider = new TimeZoneOffsetProvider(security.SubscriptionDataConfig.TimeZone, utcStartTime, utcEndTime);
IEnumerator <BaseData> enumerator;
if (config.IsCustomData)
{
// each time we exhaust we'll new up this enumerator stack
var refresher = new RefreshEnumerator <BaseData>(() =>
{
var sourceProvider = (BaseData)Activator.CreateInstance(config.Type);
var currentLocalDate = DateTime.UtcNow.ConvertFromUtc(config.TimeZone).Date;
var factory = new BaseDataSubscriptionFactory(config, currentLocalDate, true);
var source = sourceProvider.GetSource(config, currentLocalDate, true);
var factoryReadEnumerator = factory.Read(source).GetEnumerator();
var maximumDataAge = TimeSpan.FromTicks(Math.Max(config.Increment.Ticks, TimeSpan.FromSeconds(5).Ticks));
var fastForward = new FastForwardEnumerator(factoryReadEnumerator, _timeProvider, config.TimeZone, maximumDataAge);
return(new FrontierAwareEnumerator(fastForward, _timeProvider, timeZoneOffsetProvider));
});
// rate limit the refreshing of the stack to the requested interval
var minimumTimeBetweenCalls = Math.Min(config.Increment.Ticks, TimeSpan.FromMinutes(30).Ticks);
var rateLimit = new RateLimitEnumerator(refresher, _timeProvider, TimeSpan.FromTicks(minimumTimeBetweenCalls));
_customExchange.AddEnumerator(rateLimit);
var enqueable = new EnqueableEnumerator <BaseData>();
_customExchange.SetHandler(config.Symbol, data =>
{
enqueable.Enqueue(data);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = enqueable;
}
else if (config.Resolution != Resolution.Tick)
{
// this enumerator allows the exchange to pump ticks into the 'back' of the enumerator,
// and the time sync loop can pull aggregated trade bars off the front
var aggregator = new TradeBarBuilderEnumerator(config.Increment, config.TimeZone, _timeProvider);
_exchange.SetHandler(config.Symbol, data =>
{
aggregator.ProcessData((Tick)data);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = aggregator;
}
else
{
// tick subscriptions can pass right through
var tickEnumerator = new EnqueableEnumerator <BaseData>();
_exchange.SetHandler(config.Symbol, data =>
{
tickEnumerator.Enqueue(data);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = tickEnumerator;
}
if (config.FillDataForward)
{
// TODO : Properly resolve fill forward resolution like in FileSystemDataFeed (make considerations for universe-only)
enumerator = new LiveFillForwardEnumerator(_frontierTimeProvider, enumerator, security.Exchange, _fillForwardResolution, config.ExtendedMarketHours, localEndTime, config.Increment);
}
// define market hours and user filters to incoming data
enumerator = new SubscriptionFilterEnumerator(enumerator, security, localEndTime);
// finally, make our subscriptions aware of the frontier of the data feed, this will help
enumerator = new FrontierAwareEnumerator(enumerator, _frontierTimeProvider, timeZoneOffsetProvider);
subscription = new Subscription(universe, security, enumerator, timeZoneOffsetProvider, utcStartTime, utcEndTime, false);
}
catch (Exception err)
{
Log.Error(err);
}
return(subscription);
}
/// <summary>
/// Creates a new subscription for the specified security
/// </summary>
/// <param name="request">The subscription request</param>
/// <returns>A new subscription instance of the specified security</returns>
protected Subscription CreateDataSubscription(SubscriptionRequest request)
{
Subscription subscription = null;
try
{
var localEndTime = request.EndTimeUtc.ConvertFromUtc(request.Security.Exchange.TimeZone);
var timeZoneOffsetProvider = new TimeZoneOffsetProvider(request.Security.Exchange.TimeZone, request.StartTimeUtc, request.EndTimeUtc);
IEnumerator <BaseData> enumerator;
if (!_channelProvider.ShouldStreamSubscription(request.Configuration))
{
if (!Quandl.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Quandl.SetAuthCode(Config.Get("quandl-auth-token"));
}
if (!Tiingo.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Tiingo.SetAuthCode(Config.Get("tiingo-auth-token"));
}
if (!USEnergyAPI.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
USEnergyAPI.SetAuthCode(Config.Get("us-energy-information-auth-token"));
}
if (!FredApi.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
FredApi.SetAuthCode(Config.Get("fred-auth-token"));
}
var factory = new LiveCustomDataSubscriptionEnumeratorFactory(_timeProvider);
var enumeratorStack = factory.CreateEnumerator(request, _dataProvider);
_customExchange.AddEnumerator(request.Configuration.Symbol, enumeratorStack);
var enqueable = new EnqueueableEnumerator <BaseData>();
_customExchange.SetDataHandler(request.Configuration.Symbol, data =>
{
enqueable.Enqueue(data);
subscription.OnNewDataAvailable();
UpdateSubscriptionRealTimePrice(
subscription,
timeZoneOffsetProvider,
request.Security.Exchange.Hours,
data);
});
enumerator = enqueable;
}
else
{
// this enumerator allows the exchange to pump ticks into the 'back' of the enumerator,
// and the time sync loop can pull aggregated trade bars off the front
switch (request.Configuration.Type.Name)
{
case nameof(QuoteBar):
var quoteBarAggregator = new QuoteBarBuilderEnumerator(
request.Configuration.Increment,
request.Security.Exchange.TimeZone,
_timeProvider,
true,
(sender, args) => subscription.OnNewDataAvailable());
_exchange.AddDataHandler(request.Configuration.Symbol, data =>
{
var tick = data as Tick;
if (tick?.TickType == TickType.Quote && !tick.Suspicious)
{
quoteBarAggregator.ProcessData(tick);
UpdateSubscriptionRealTimePrice(
subscription,
timeZoneOffsetProvider,
request.Security.Exchange.Hours,
data);
}
});
enumerator = quoteBarAggregator;
break;
case nameof(TradeBar):
var tradeBarAggregator = new TradeBarBuilderEnumerator(
request.Configuration.Increment,
request.Security.Exchange.TimeZone,
_timeProvider,
true,
(sender, args) => subscription.OnNewDataAvailable());
var auxDataEnumerator = new LiveAuxiliaryDataEnumerator(
request.Security.Exchange.TimeZone,
_timeProvider);
_exchange.AddDataHandler(
request.Configuration.Symbol,
data =>
{
if (data.DataType == MarketDataType.Auxiliary)
{
auxDataEnumerator.Enqueue(data);
subscription.OnNewDataAvailable();
}
else
{
var tick = data as Tick;
if (tick?.TickType == TickType.Trade && !tick.Suspicious)
{
tradeBarAggregator.ProcessData(tick);
UpdateSubscriptionRealTimePrice(
subscription,
timeZoneOffsetProvider,
request.Security.Exchange.Hours,
data);
}
}
});
enumerator = request.Configuration.SecurityType == SecurityType.Equity
? (IEnumerator <BaseData>) new LiveEquityDataSynchronizingEnumerator(_frontierTimeProvider, request.Security.Exchange.TimeZone, auxDataEnumerator, tradeBarAggregator)
: tradeBarAggregator;
break;
case nameof(OpenInterest):
var oiAggregator = new OpenInterestEnumerator(
request.Configuration.Increment,
request.Security.Exchange.TimeZone,
_timeProvider,
true,
(sender, args) => subscription.OnNewDataAvailable());
_exchange.AddDataHandler(request.Configuration.Symbol, data =>
{
var tick = data as Tick;
if (tick?.TickType == TickType.OpenInterest && !tick.Suspicious)
{
oiAggregator.ProcessData(tick);
}
});
enumerator = oiAggregator;
break;
case nameof(Tick):
default:
// tick or streaming custom data subscriptions can pass right through
var tickEnumerator = new EnqueueableEnumerator <BaseData>();
_exchange.AddDataHandler(
request.Configuration.Symbol,
data =>
{
var tick = data as Tick;
if (tick != null)
{
if (tick.TickType == request.Configuration.TickType)
{
tickEnumerator.Enqueue(data);
subscription.OnNewDataAvailable();
if (tick.TickType != TickType.OpenInterest)
{
UpdateSubscriptionRealTimePrice(
subscription,
timeZoneOffsetProvider,
request.Security.Exchange.Hours,
data);
}
}
}
else
{
tickEnumerator.Enqueue(data);
subscription.OnNewDataAvailable();
}
});
enumerator = tickEnumerator;
break;
}
}
if (request.Configuration.FillDataForward)
{
var fillForwardResolution = _subscriptions.UpdateAndGetFillForwardResolution(request.Configuration);
enumerator = new LiveFillForwardEnumerator(_frontierTimeProvider, enumerator, request.Security.Exchange, fillForwardResolution, request.Configuration.ExtendedMarketHours, localEndTime, request.Configuration.Increment, request.Configuration.DataTimeZone, request.StartTimeLocal);
}
// define market hours and user filters to incoming data
if (request.Configuration.IsFilteredSubscription)
{
enumerator = new SubscriptionFilterEnumerator(enumerator, request.Security, localEndTime);
}
// finally, make our subscriptions aware of the frontier of the data feed, prevents future data from spewing into the feed
enumerator = new FrontierAwareEnumerator(enumerator, _frontierTimeProvider, timeZoneOffsetProvider);
var subscriptionDataEnumerator = new SubscriptionDataEnumerator(request.Configuration, request.Security.Exchange.Hours, timeZoneOffsetProvider, enumerator);
subscription = new Subscription(request, subscriptionDataEnumerator, timeZoneOffsetProvider);
}
catch (Exception err)
{
Log.Error(err);
}
return(subscription);
}
/// <summary>
/// Creates a new subscription for the specified security
/// </summary>
/// <param name="request">The subscription request</param>
/// <returns>A new subscription instance of the specified security</returns>
protected Subscription CreateSubscription(SubscriptionRequest request)
{
Subscription subscription = null;
try
{
var localEndTime = request.EndTimeUtc.ConvertFromUtc(request.Security.Exchange.TimeZone);
var timeZoneOffsetProvider = new TimeZoneOffsetProvider(request.Security.Exchange.TimeZone, request.StartTimeUtc, request.EndTimeUtc);
IEnumerator <BaseData> enumerator;
if (request.Configuration.IsCustomData)
{
if (!Quandl.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Quandl.SetAuthCode(Config.Get("quandl-auth-token"));
}
var factory = new LiveCustomDataSubscriptionEnumeratorFactory(_timeProvider);
var enumeratorStack = factory.CreateEnumerator(request, _dataProvider);
_customExchange.AddEnumerator(request.Configuration.Symbol, enumeratorStack);
var enqueable = new EnqueueableEnumerator <BaseData>();
_customExchange.SetDataHandler(request.Configuration.Symbol, data =>
{
enqueable.Enqueue(data);
if (SubscriptionShouldUpdateRealTimePrice(subscription, timeZoneOffsetProvider))
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = enqueable;
}
else if (request.Configuration.Resolution != Resolution.Tick)
{
// this enumerator allows the exchange to pump ticks into the 'back' of the enumerator,
// and the time sync loop can pull aggregated trade bars off the front
switch (request.Configuration.TickType)
{
case TickType.Quote:
var quoteBarAggregator = new QuoteBarBuilderEnumerator(request.Configuration.Increment, request.Security.Exchange.TimeZone, _timeProvider);
_exchange.AddDataHandler(request.Configuration.Symbol, data =>
{
var tick = data as Tick;
if (tick.TickType == TickType.Quote)
{
quoteBarAggregator.ProcessData(tick);
if (SubscriptionShouldUpdateRealTimePrice(subscription, timeZoneOffsetProvider))
{
subscription.RealtimePrice = data.Value;
}
}
});
enumerator = quoteBarAggregator;
break;
case TickType.Trade:
default:
var tradeBarAggregator = new TradeBarBuilderEnumerator(request.Configuration.Increment, request.Security.Exchange.TimeZone, _timeProvider);
_exchange.AddDataHandler(request.Configuration.Symbol, data =>
{
var tick = data as Tick;
if (tick.TickType == TickType.Trade)
{
tradeBarAggregator.ProcessData(tick);
if (SubscriptionShouldUpdateRealTimePrice(subscription, timeZoneOffsetProvider))
{
subscription.RealtimePrice = data.Value;
}
}
});
enumerator = tradeBarAggregator;
break;
case TickType.OpenInterest:
var oiAggregator = new OpenInterestEnumerator(request.Configuration.Increment, request.Security.Exchange.TimeZone, _timeProvider);
_exchange.AddDataHandler(request.Configuration.Symbol, data =>
{
var tick = data as Tick;
if (tick.TickType == TickType.OpenInterest)
{
oiAggregator.ProcessData(tick);
}
});
enumerator = oiAggregator;
break;
}
}
else
{
// tick subscriptions can pass right through
var tickEnumerator = new EnqueueableEnumerator <BaseData>();
_exchange.SetDataHandler(request.Configuration.Symbol, data =>
{
tickEnumerator.Enqueue(data);
if (SubscriptionShouldUpdateRealTimePrice(subscription, timeZoneOffsetProvider))
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = tickEnumerator;
}
if (request.Configuration.FillDataForward)
{
var subscriptionConfigs = _subscriptions.Select(x => x.Configuration).Concat(new[] { request.Configuration });
UpdateFillForwardResolution(subscriptionConfigs);
enumerator = new LiveFillForwardEnumerator(_frontierTimeProvider, enumerator, request.Security.Exchange, _fillForwardResolution, request.Configuration.ExtendedMarketHours, localEndTime, request.Configuration.Increment, request.Configuration.DataTimeZone);
}
// define market hours and user filters to incoming data
if (request.Configuration.IsFilteredSubscription)
{
enumerator = new SubscriptionFilterEnumerator(enumerator, request.Security, localEndTime);
}
// finally, make our subscriptions aware of the frontier of the data feed, prevents future data from spewing into the feed
enumerator = new FrontierAwareEnumerator(enumerator, _frontierTimeProvider, timeZoneOffsetProvider);
var subscriptionDataEnumerator = SubscriptionData.Enumerator(request.Configuration, request.Security, timeZoneOffsetProvider, enumerator);
subscription = new Subscription(request.Universe, request.Security, request.Configuration, subscriptionDataEnumerator, timeZoneOffsetProvider, request.StartTimeUtc, request.EndTimeUtc, false);
}
catch (Exception err)
{
Log.Error(err);
}
return(subscription);
}
/// <summary>
/// Live trading datafeed handler provides a base implementation of a live trading datafeed. Derived types
/// need only implement the GetNextTicks() function to return unprocessed ticks from a data source.
/// This creates a new data feed with a DataFeedEndpoint of LiveTrading.
/// </summary>
public void Initialize(IAlgorithm algorithm, AlgorithmNodePacket job, IResultHandler resultHandler)
{
//Subscription Count:
_subscriptions = algorithm.SubscriptionManager.Subscriptions;
Bridge = new BlockingCollection <TimeSlice>();
//Set Properties:
_isActive = true;
_endOfBridge = new bool[Subscriptions.Count];
_subscriptionManagers = new IEnumerator <BaseData> [Subscriptions.Count];
_realtimePrices = new List <decimal>();
//Set the source of the live data:
_dataQueue = Composer.Instance.GetExportedValueByTypeName <IDataQueueHandler>(Configuration.Config.Get("data-queue-handler", "LiveDataQueue"));
//Class Privates:
_algorithm = algorithm;
if (!(job is LiveNodePacket))
{
throw new ArgumentException("The LiveTradingDataFeed requires a LiveNodePacket.");
}
_job = (LiveNodePacket)job;
//Setup the arrays:
for (var i = 0; i < Subscriptions.Count; i++)
{
_endOfBridge[i] = false;
//This is quantconnect data source, store here for speed/ease of access
var security = algorithm.Securities[_subscriptions[i].Symbol];
_isDynamicallyLoadedData.Add(security.IsDynamicallyLoadedData);
// only make readers for custom data, live data will come through data queue handler
if (_isDynamicallyLoadedData[i])
{
//Subscription managers for downloading user data:
// TODO: Update this when warmup comes in, we back up so we can get data that should have emitted at midnight today
var periodStart = DateTime.Today.AddDays(-7);
var subscriptionDataReader = new SubscriptionDataReader(
_subscriptions[i],
security,
DataFeedEndpoint.LiveTrading,
periodStart,
DateTime.MaxValue,
resultHandler,
Time.EachTradeableDay(algorithm.Securities, periodStart, DateTime.MaxValue)
);
// wrap the subscription data reader with a filter enumerator
_subscriptionManagers[i] = SubscriptionFilterEnumerator.WrapForDataFeed(resultHandler, subscriptionDataReader, security, DateTime.MaxValue);
}
_realtimePrices.Add(0);
}
// request for data from these symbols
var symbols = BuildTypeSymbolList(algorithm);
if (symbols.Any())
{
// don't subscribe if there's nothing there, this allows custom data to
// work without an IDataQueueHandler implementation by specifying LiveDataQueue
// in the configuration, that implementation throws on every method, but we actually
// don't need it if we're only doing custom data
_dataQueue.Subscribe(_job, symbols);
}
}
/// <summary>
/// Creates a new subscription for the specified security
/// </summary>
/// <param name="universe"></param>
/// <param name="security">The security to create a subscription for</param>
/// <param name="config">The subscription config to be added</param>
/// <param name="utcStartTime">The start time of the subscription in UTC</param>
/// <param name="utcEndTime">The end time of the subscription in UTC</param>
/// <returns>A new subscription instance of the specified security</returns>
protected Subscription CreateSubscription(Universe universe, Security security, SubscriptionDataConfig config, DateTime utcStartTime, DateTime utcEndTime)
{
Subscription subscription = null;
try
{
var localEndTime = utcEndTime.ConvertFromUtc(security.Exchange.TimeZone);
var timeZoneOffsetProvider = new TimeZoneOffsetProvider(security.Exchange.TimeZone, utcStartTime, utcEndTime);
IEnumerator <BaseData> enumerator;
if (config.IsCustomData)
{
if (!Quandl.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Quandl.SetAuthCode(Config.Get("quandl-auth-token"));
}
// each time we exhaust we'll new up this enumerator stack
var refresher = new RefreshEnumerator <BaseData>(() =>
{
var sourceProvider = (BaseData)Activator.CreateInstance(config.Type);
var dateInDataTimeZone = DateTime.UtcNow.ConvertFromUtc(config.DataTimeZone).Date;
var source = sourceProvider.GetSource(config, dateInDataTimeZone, true);
var factory = SubscriptionDataSourceReader.ForSource(source, config, dateInDataTimeZone, false);
var factoryReadEnumerator = factory.Read(source).GetEnumerator();
var maximumDataAge = TimeSpan.FromTicks(Math.Max(config.Increment.Ticks, TimeSpan.FromSeconds(5).Ticks));
return(new FastForwardEnumerator(factoryReadEnumerator, _timeProvider, security.Exchange.TimeZone, maximumDataAge));
});
// rate limit the refreshing of the stack to the requested interval
var minimumTimeBetweenCalls = Math.Min(config.Increment.Ticks, TimeSpan.FromMinutes(30).Ticks);
var rateLimit = new RateLimitEnumerator(refresher, _timeProvider, TimeSpan.FromTicks(minimumTimeBetweenCalls));
var frontierAware = new FrontierAwareEnumerator(rateLimit, _timeProvider, timeZoneOffsetProvider);
_customExchange.AddEnumerator(config.Symbol, frontierAware);
var enqueable = new EnqueueableEnumerator <BaseData>();
_customExchange.SetDataHandler(config.Symbol, data =>
{
enqueable.Enqueue(data);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = enqueable;
}
else if (config.Resolution != Resolution.Tick)
{
// this enumerator allows the exchange to pump ticks into the 'back' of the enumerator,
// and the time sync loop can pull aggregated trade bars off the front
var aggregator = new TradeBarBuilderEnumerator(config.Increment, security.Exchange.TimeZone, _timeProvider);
_exchange.SetDataHandler(config.Symbol, data =>
{
aggregator.ProcessData((Tick)data);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = aggregator;
}
else
{
// tick subscriptions can pass right through
var tickEnumerator = new EnqueueableEnumerator <BaseData>();
_exchange.SetDataHandler(config.Symbol, data =>
{
tickEnumerator.Enqueue(data);
if (subscription != null)
{
subscription.RealtimePrice = data.Value;
}
});
enumerator = tickEnumerator;
}
if (config.FillDataForward)
{
enumerator = new LiveFillForwardEnumerator(_frontierTimeProvider, enumerator, security.Exchange, _fillForwardResolution, config.ExtendedMarketHours, localEndTime, config.Increment);
}
// define market hours and user filters to incoming data
if (config.IsFilteredSubscription)
{
enumerator = new SubscriptionFilterEnumerator(enumerator, security, localEndTime);
}
// finally, make our subscriptions aware of the frontier of the data feed, prevents future data from spewing into the feed
enumerator = new FrontierAwareEnumerator(enumerator, _frontierTimeProvider, timeZoneOffsetProvider);
subscription = new Subscription(universe, security, config, enumerator, timeZoneOffsetProvider, utcStartTime, utcEndTime, false);
}
catch (Exception err)
{
Log.Error(err);
}
return(subscription);
}
/// <summary>
/// Creates a new subscription for the specified security
/// </summary>
/// <param name="request">The subscription request</param>
/// <returns>A new subscription instance of the specified security</returns>
private Subscription CreateDataSubscription(SubscriptionRequest request)
{
Subscription subscription = null;
try
{
var localEndTime = request.EndTimeUtc.ConvertFromUtc(request.Security.Exchange.TimeZone);
var timeZoneOffsetProvider = new TimeZoneOffsetProvider(request.Configuration.ExchangeTimeZone, request.StartTimeUtc, request.EndTimeUtc);
IEnumerator <BaseData> enumerator = null;
// during warmup we might get requested to add some asset which has already expired in which case the live enumerator will be empty
if (!IsExpired(request.Configuration))
{
if (!_channelProvider.ShouldStreamSubscription(request.Configuration))
{
if (!Tiingo.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Tiingo.SetAuthCode(Config.Get("tiingo-auth-token"));
}
var factory = new LiveCustomDataSubscriptionEnumeratorFactory(_timeProvider);
var enumeratorStack = factory.CreateEnumerator(request, _dataProvider);
var enqueable = new EnqueueableEnumerator <BaseData>();
_customExchange.AddEnumerator(request.Configuration.Symbol, enumeratorStack, handleData: data =>
{
enqueable.Enqueue(data);
subscription?.OnNewDataAvailable();
});
enumerator = enqueable;
}
else
{
var auxEnumerators = new List <IEnumerator <BaseData> >();
if (LiveAuxiliaryDataEnumerator.TryCreate(request.Configuration, _timeProvider, _dataQueueHandler,
request.Security.Cache, _mapFileProvider, _factorFileProvider, request.StartTimeLocal, out var auxDataEnumator))
{
auxEnumerators.Add(auxDataEnumator);
}
EventHandler handler = (_, _) => subscription?.OnNewDataAvailable();
enumerator = Subscribe(request.Configuration, handler);
if (request.Configuration.EmitSplitsAndDividends())
{
auxEnumerators.Add(Subscribe(new SubscriptionDataConfig(request.Configuration, typeof(Dividend)), handler));
auxEnumerators.Add(Subscribe(new SubscriptionDataConfig(request.Configuration, typeof(Split)), handler));
}
if (auxEnumerators.Count > 0)
{
enumerator = new LiveAuxiliaryDataSynchronizingEnumerator(_timeProvider, request.Configuration.ExchangeTimeZone, enumerator, auxEnumerators);
}
}
// scale prices before 'SubscriptionFilterEnumerator' since it updates securities realtime price
// and before fill forwarding so we don't happen to apply twice the factor
if (request.Configuration.PricesShouldBeScaled(liveMode: true))
{
enumerator = new PriceScaleFactorEnumerator(
enumerator,
request.Configuration,
_factorFileProvider,
liveMode: true);
}
if (request.Configuration.FillDataForward)
{
var fillForwardResolution = _subscriptions.UpdateAndGetFillForwardResolution(request.Configuration);
enumerator = new LiveFillForwardEnumerator(_frontierTimeProvider, enumerator, request.Security.Exchange, fillForwardResolution, request.Configuration.ExtendedMarketHours, localEndTime, request.Configuration.Increment, request.Configuration.DataTimeZone);
}
// make our subscriptions aware of the frontier of the data feed, prevents future data from spewing into the feed
enumerator = new FrontierAwareEnumerator(enumerator, _frontierTimeProvider, timeZoneOffsetProvider);
// define market hours and user filters to incoming data after the frontier enumerator so during warmup we avoid any realtime data making it's way into the securities
if (request.Configuration.IsFilteredSubscription)
{
enumerator = new SubscriptionFilterEnumerator(enumerator, request.Security, localEndTime, request.Configuration.ExtendedMarketHours, true, request.ExchangeHours);
}
}
else
{
enumerator = Enumerable.Empty <BaseData>().GetEnumerator();
}
enumerator = GetWarmupEnumerator(request, enumerator);
var subscriptionDataEnumerator = new SubscriptionDataEnumerator(request.Configuration, request.Security.Exchange.Hours, timeZoneOffsetProvider, enumerator, request.IsUniverseSubscription);
subscription = new Subscription(request, subscriptionDataEnumerator, timeZoneOffsetProvider);
}
catch (Exception err)
{
Log.Error(err);
}
return(subscription);
}
/// <summary>
/// Creates a new subscription for the specified security
/// </summary>
/// <param name="request">The subscription request</param>
/// <returns>A new subscription instance of the specified security</returns>
protected Subscription CreateDataSubscription(SubscriptionRequest request)
{
Subscription subscription = null;
try
{
var localEndTime = request.EndTimeUtc.ConvertFromUtc(request.Security.Exchange.TimeZone);
var timeZoneOffsetProvider = new TimeZoneOffsetProvider(request.Security.Exchange.TimeZone, request.StartTimeUtc, request.EndTimeUtc);
IEnumerator <BaseData> enumerator;
if (!_channelProvider.ShouldStreamSubscription(_job, request.Configuration))
{
if (!Quandl.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Quandl.SetAuthCode(Config.Get("quandl-auth-token"));
}
if (!Tiingo.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
Tiingo.SetAuthCode(Config.Get("tiingo-auth-token"));
}
if (!USEnergyAPI.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
USEnergyAPI.SetAuthCode(Config.Get("us-energy-information-auth-token"));
}
if (!FredApi.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
FredApi.SetAuthCode(Config.Get("fred-auth-token"));
}
if (!TradingEconomicsCalendar.IsAuthCodeSet)
{
// we're not using the SubscriptionDataReader, so be sure to set the auth token here
TradingEconomicsCalendar.SetAuthCode(Config.Get("trading-economics-auth-token"));
}
var factory = new LiveCustomDataSubscriptionEnumeratorFactory(_timeProvider);
var enumeratorStack = factory.CreateEnumerator(request, _dataProvider);
_customExchange.AddEnumerator(request.Configuration.Symbol, enumeratorStack);
var enqueable = new EnqueueableEnumerator <BaseData>();
_customExchange.SetDataHandler(request.Configuration.Symbol, data =>
{
enqueable.Enqueue(data);
subscription.OnNewDataAvailable();
});
enumerator = enqueable;
}
else
{
EventHandler handler = (sender, args) => subscription?.OnNewDataAvailable();
enumerator = _dataQueueHandler.Subscribe(request.Configuration, handler);
if (request.Configuration.SecurityType == SecurityType.Equity && CorporateEventEnumeratorFactory.ShouldEmitAuxiliaryBaseData(request.Configuration))
{
var dividends = _dataQueueHandler.Subscribe(new SubscriptionDataConfig(request.Configuration, typeof(Dividend)), handler);
var splits = _dataQueueHandler.Subscribe(new SubscriptionDataConfig(request.Configuration, typeof(Split)), handler);
enumerator = new LiveEquityDataSynchronizingEnumerator(_timeProvider, request.Configuration.ExchangeTimeZone, enumerator, dividends, splits);
}
}
if (request.Configuration.FillDataForward)
{
var fillForwardResolution = _subscriptions.UpdateAndGetFillForwardResolution(request.Configuration);
enumerator = new LiveFillForwardEnumerator(_frontierTimeProvider, enumerator, request.Security.Exchange, fillForwardResolution, request.Configuration.ExtendedMarketHours, localEndTime, request.Configuration.Increment, request.Configuration.DataTimeZone);
}
// define market hours and user filters to incoming data
if (request.Configuration.IsFilteredSubscription)
{
enumerator = new SubscriptionFilterEnumerator(enumerator, request.Security, localEndTime, request.Configuration.ExtendedMarketHours, true);
}
// finally, make our subscriptions aware of the frontier of the data feed, prevents future data from spewing into the feed
enumerator = new FrontierAwareEnumerator(enumerator, _frontierTimeProvider, timeZoneOffsetProvider);
var subscriptionDataEnumerator = new SubscriptionDataEnumerator(request.Configuration, request.Security.Exchange.Hours, timeZoneOffsetProvider, enumerator);
subscription = new Subscription(request, subscriptionDataEnumerator, timeZoneOffsetProvider);
}
catch (Exception err)
{
Log.Error(err);
}
return(subscription);
}
public void Initialize(IAlgorithm algorithm, AlgorithmNodePacket job, IResultHandler resultHandler)
{
_cancellationTokenSource = new CancellationTokenSource();
Subscriptions = algorithm.SubscriptionManager.Subscriptions;
_subscriptions = Subscriptions.Count;
//Public Properties:
IsActive = true;
_endOfBridge = new bool[_subscriptions];
SubscriptionReaders = new IEnumerator <BaseData> [_subscriptions];
FillForwardFrontiers = new DateTime[_subscriptions];
RealtimePrices = new List <decimal>(_subscriptions);
//Class Privates:
_algorithm = algorithm;
// find the minimum resolution, ignoring ticks
var fillForwardResolution = Subscriptions
.Where(x => x.Resolution != Resolution.Tick)
.Select(x => x.Resolution.ToTimeSpan())
.DefaultIfEmpty(TimeSpan.FromSeconds(1))
.Min();
// figure out how many subscriptions are at the minimum resolution
var subscriptionsAtMinimumResolution =
(from sub in Subscriptions
where sub.Resolution == Subscriptions.Min(x => x.Resolution)
select sub).Count();
Bridge = new BlockingCollection <TimeSlice>(Math.Min(1000, 50000 / subscriptionsAtMinimumResolution));
for (var i = 0; i < _subscriptions; i++)
{
_endOfBridge[i] = false;
var config = Subscriptions[i];
var start = algorithm.StartDate;
var end = algorithm.EndDate;
var security = _algorithm.Securities[Subscriptions[i].Symbol];
var tradeableDates = Time.EachTradeableDay(security, start.Date, end.Date);
IEnumerator <BaseData> enumerator = new SubscriptionDataReader(config, security, DataFeedEndpoint.FileSystem, start, end, resultHandler, tradeableDates);
// optionally apply fill forward logic, but never for tick data
if (config.FillDataForward && config.Resolution != Resolution.Tick)
{
enumerator = new FillForwardEnumerator(enumerator, security.Exchange, fillForwardResolution, security.IsExtendedMarketHours, end, config.Resolution.ToTimeSpan());
}
// finally apply exchange/user filters
SubscriptionReaders[i] = SubscriptionFilterEnumerator.WrapForDataFeed(resultHandler, enumerator, security, end);
FillForwardFrontiers[i] = new DateTime();
// prime the pump for iteration in Run
_endOfBridge[i] = !SubscriptionReaders[i].MoveNext();
if (_endOfBridge[i])
{
Log.Trace("FileSystemDataFeed.Run(): Failed to load subscription: " + Subscriptions[i].Symbol);
}
}
}
