public FileDataSource(IFeatureStore featureStore, List <string> paths, bool autoUpdate, TimeSpan pollInterval, Func <string, object> alternateParser) { _featureStore = featureStore; _paths = new List <string>(paths); _parser = new FlagFileParser(alternateParser); if (autoUpdate) { try { #if NETSTANDARD1_4 || NETSTANDARD1_6 _reloader = new FilePollingReloader(_paths, TriggerReload, pollInterval); #else _reloader = new FileWatchingReloader(_paths, TriggerReload); #endif } catch (Exception e) { Log.ErrorFormat("Unable to watch files for auto-updating: {0}", e); _reloader = null; } } else { _reloader = null; } }