public static void LoadInMemoryExchangeFeeds(List<Exchange> exchanges)
{
ExchangeFakeFeeds = new List<ExchangeFeeds>();
foreach (Exchange exchange in exchanges)
{
ExchangeFeeds exchangeFeed = new ExchangeFeeds();
exchangeFeed.ExchangeId = Convert.ToInt32(exchange);
exchangeFeed.ExchangeSymbolFeed = new List<SymbolFeeds>();
if (ExchangeSymbolList.Count == 0) LoadInMemoryExchangeSymbols(exchanges);
foreach (Symbol symbol in ExchangeSymbolList.SingleOrDefault(x => x.Exchange == exchange).Symbols)
{
SymbolFeeds symbolFeeds = new SymbolFeeds();
symbolFeeds.SymbolId = symbol.Id;
symbolFeeds.Feeds = new List<Feed>();
exchangeFeed.ExchangeSymbolFeed.Add(symbolFeeds);
}
ExchangeFakeFeeds.Add(exchangeFeed);
}
}
/// <summary>
/// Method for generating fake data
/// </summary>
private void UpdateData()
{
// Method to change the values of all the stocks randomly in a fixed range
List<StockModel.Symbol> symbols = InMemoryObjects.ExchangeSymbolList.SingleOrDefault(x => x.Exchange == Exchange.FAKE_NASDAQ).Symbols;
Feed[] feedsArray = new Feed[symbols.Count];
List<SymbolFeeds> symbolFeeds = new List<SymbolFeeds>();
while (true)
{
Thread.Sleep(updateDurationTime);
Parallel.ForEach(symbols, (symbol) =>
{
SymbolFeeds feeds = new SymbolFeeds();
feeds.SymbolId = symbol.Id;
double changePercent = random.NextDouble() * (Constants.MAX_CHANGE_PERC - Constants.MIN_CHANGE_PERC) + Constants.MIN_CHANGE_PERC;
symbol.DefaultVal = symbol.DefaultVal + symbol.DefaultVal * changePercent / 100;
Feed feed = new Feed();
feed.SymbolId = symbol.Id;
feed.LTP = symbol.DefaultVal;
feed.TimeStamp = Convert.ToInt64((DateTime.Now - epoch).TotalMilliseconds);
if (FeedArrived != null)
FeedArrived((Feed)feed.Clone());
//notify subscribers - later to be changed to only notify if there is any new data
Notify(symbol.Id, feed);
});
}
}