public void Update(PriceEventViewModel v)
{
Price = v.Price;
High = v.High;
Low = v.Low;
TimeStampUtc = v.TimeStampUtc;
}
private void InitUIAverage()
{
foreach (var feed in _priceFeeds)
{
var batchBlock = new BatchBlock <PriceEventArgs>(5);
var actionBlock = new ActionBlock <PriceEventArgs[]>(e =>
{
var average = e.Average(v => v.Price);
var low = e.Min(v => v.Price);
var high = e.Max(v => v.Price);
var update = new PriceEventViewModel(feed.Key, DateTime.UtcNow, average, low, high);
UpdatePrice(update, _averagePriceDict, AveragePrices);
});
_broadcastBlock.LinkTo(batchBlock, p => p.Name == feed.Key);
batchBlock.LinkTo(actionBlock);
}
}
private void UpdatePrice(PriceEventViewModel v, Dictionary <string, PriceEventViewModel> dictToUpdate,
ObservableCollection <PriceEventViewModel> collectionToUpdate)
{
if (App.Current != null)
{
App.Current.Dispatcher.Invoke(() =>
{
if (dictToUpdate.TryGetValue(v.Name, out var lastPrice))
{
lastPrice.Update(v);
}
else
{
dictToUpdate.Add(v.Name, v);
collectionToUpdate.Add(v);
}
});
}
}
private void InitUILatestPriceTimeInterval()
{
foreach (var feed in _priceFeeds)
{
var batchBlock = new BatchBlock <PriceEventArgs>(10000);
var intervalTimer = new Timer(1000);
intervalTimer.Elapsed += (s, e) => batchBlock.TriggerBatch();
var updateUILatestPrice = new ActionBlock <PriceEventArgs[]>(e =>
{
var latest = e.OrderByDescending(o => o.TimeStampUtc)
.FirstOrDefault();
var low = e.Min(v => v.Price);
var high = e.Max(v => v.Price);
var update = new PriceEventViewModel(feed.Key, DateTime.UtcNow, latest.Price, low, high);
UpdatePrice(update, _latestPriceDict, LatestPrices);
});
_broadcastBlock.LinkTo(batchBlock, p => p.Name == feed.Key);
batchBlock.LinkTo(updateUILatestPrice);
intervalTimer.Start();
}
}
