/// <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);
});
}
}
/// <summary>
/// Method for notifying all subscribers that feed has arrived.
/// </summary>
/// <param name="symbolId">Id of the symbol for which feed has arrived</param>
/// <param name="fd">Feed</param>
private void Notify(int symbolId, Feed fd)
{
lock (_lockSubscription)
{
if (notifyList.ContainsKey(symbolId))
{
foreach (OnFeedReceived hndl in notifyList[symbolId])
{
try
{
//send a copy
hndl((Feed)fd.Clone());
}
catch
{
//ignore...
}
}
}
}
}
