private void DispatchMarketChanged(MarketChangedEventArgs args)
{
try
{
MarketChanged.Invoke(this, args);
}
catch (Exception e)
{
Trace.TraceError("Error dispatching event: {0}", e);
}
}
public void OnMarketChange(ChangeMessage <MarketChange> changeMessage)
{
if (changeMessage.IsStartOfNewSubscription)
{
//clear cache
_markets.Clear();
}
if (changeMessage.Items != null)
{
//lazy build events
List <MarketChangedEventArgs> batch = BatchMarketsChanged == null ? null : new List <MarketChangedEventArgs>(changeMessage.Items.Count);
foreach (MarketChange marketChange in changeMessage.Items)
{
Market market = OnMarketChange(marketChange);
if (IsMarketRemovedOnClose && market.IsClosed)
{
//remove on close
Market removed;
_markets.TryRemove(market.MarketId, out removed);
}
//lazy build events
if (batch != null || MarketChanged != null)
{
MarketChangedEventArgs arg = new MarketChangedEventArgs()
{
Change = marketChange, Market = market
};
if (MarketChanged != null)
{
DispatchMarketChanged(arg);
}
if (batch != null)
{
batch.Add(arg);
}
}
}
if (batch != null)
{
DispatchBatchMarketsChanged(new BatchMarketsChangedEventArgs()
{
Changes = batch
});
}
}
}