static async Task TestTickerAsync()
{
Console.WriteLine("Testing coin Ticker info:");
Console.WriteLine("enter coin id:");
var id = Console.ReadLine();
Console.WriteLine($"fetching ticker for id {id} ...");
var ticker = await _client.GetTickerForIdAsync(id);
if (ticker.Error == null)
{
Console.WriteLine($"{ticker.Value.Name}({ticker.Value.Id}({ticker.Value.Symbol})) - {ticker.Value.Rank} - BTC:{ticker.Value.PriceBtc}/USD:{ticker.Value.PriceUsd} - PercentChange24h:{ticker.Value.PercentChange24H}");
Console.WriteLine("Press any key to finish test...");
}
else
{
Console.WriteLine($"CoinPaprika returned an error: {ticker.Error.ErrorMessage}");
}
Console.ReadLine();
Console.WriteLine("Bye!");
}
public static async Task <TickerInfo> GetTickerInfo(IMemoryCache cache)
{
//This stops us spamming the API on failures
if (_lastFailTime.HasValue && (DateTime.Now - _lastFailTime.Value).TotalMinutes <= 45)
{
if (_lastKnownInfo != null)
{
return(_lastKnownInfo);
}
}
if (!cache.TryGetValue("HomeV3Ticker", out object tickerModel))
{
bool success = await _lock.WaitAsync(TimeSpan.FromSeconds(1));
if (!success)
{
return(null);
}
try
{
if (!cache.TryGetValue("HomeV3Ticker", out tickerModel))
{
CoinpaprikaAPI.Client client = new CoinpaprikaAPI.Client();
throw new Exception();
tickerModel = (await client.GetTickerForIdAsync(@"trac-origintrail")).Value;
cache.Set("HomeV3Ticker", tickerModel, TimeSpan.FromMinutes(3));
_lastFailTime = null;
}
}
catch (Exception)
{
_lastFailTime = DateTime.Now;
if (_lastKnownInfo != null)
{
return(_lastKnownInfo);
}
return(null);
}
finally
{
_lock.Release();
}
}
var tickerInfo = _lastKnownInfo = (TickerInfo)tickerModel;
return(tickerInfo);
}
