private async Task RebuildTopAssets()
{
_log.Info("Rebuild top asset....");
var settings = Settings;
// Get top 100 market caps
List <AssetMarketCap> allMarketCaps;
lock (_sync)
allMarketCaps = _allMarketCaps.ToList();
// Get white list supplies
var whiteListSupplies = new Dictionary <string, decimal>();
settings.Assets.ForEach(x => whiteListSupplies.Add(x, allMarketCaps.Single(mk => mk.Asset == x).CirculatingSupply));
// Get white list prices
var sources = settings.Sources.ToList();
var whiteListAssets = whiteListSupplies.Select(x => x.Key).ToList();
var assetsPrices = _tickPricesService.GetAssetPrices(sources);
var assetsSettings = settings.AssetsSettings;
var whiteListUsingPrices = GetAssetsUsingPrices(whiteListAssets, assetsPrices, assetsSettings);
var areAllPricesPresent = await ArePricesPresentForAllAssets(whiteListAssets, whiteListUsingPrices);
if (!areAllPricesPresent)
{
return;
}
// Calculate white list market caps
var whiteListMarketCaps = CalculateMarketCaps(whiteListAssets, whiteListSupplies, whiteListUsingPrices);
// Calculate white list weights
var whiteListWeights = CalculateWeightsOrderedByDesc(whiteListMarketCaps);
// Get top weights
var topWeights = whiteListWeights
.Take(Settings.TopCount)
.ToDictionary();
lock (_sync)
{
// Refresh top assets
_topAssets.Clear();
_topAssets.AddRange(topWeights.Keys);
_lastRebuild = DateTime.UtcNow.Date;
_rebuildNeeded = false;
_log.Info($"Finished rebuilding top assets, count - {_topAssets.Count}.");
}
}
public async Task <IReadOnlyList <string> > GetSourcesAsync()
{
var prices = _tickPricesService.GetAssetPrices();
var result = prices.SelectMany(x => x.Value)
.Select(x => x.Source)
.Distinct()
.OrderBy(x => x).ToList();
return(result);
}
public async Task <IReadOnlyList <AssetInfo> > GetAllAsync()
{
var settings = await _settingsService.GetAsync();
var marketCaps = _indexCalculator.GetAllAssetsMarketCaps();
var prices = _tickPricesService.GetAssetPrices(settings.Sources.ToList());
var result = new List <AssetInfo>();
foreach (var asset in settings.Assets)
{
if (!marketCaps.ContainsKey(asset))
{
continue;
}
var marketCap = marketCaps[asset];
if (!prices.ContainsKey(asset))
{
continue;
}
var allAssetPrices = prices[asset];
var sources = allAssetPrices.Select(x => x.Source).Distinct().ToList();
var assetPrices = new Dictionary <string, decimal>();
foreach (var source in sources)
{
var assetSourcePrices = allAssetPrices.Where(x => x.Source == source).ToList();
var middlePrice = Utils.GetMiddlePrice(asset, assetSourcePrices);
assetPrices.Add(source, middlePrice);
}
var assetInfo = new AssetInfo
{
Asset = asset,
MarketCap = marketCap,
Prices = assetPrices
};
result.Add(assetInfo);
}
return(result);
}