private async Task LoadSymbolsData()
{
try
{
var client = new HttpClient();
string url = ENDPOINT_URI + ENDPOINT_SYMBOLS_PRICES;
var response = await client.GetAsync(url);
if (!response.IsSuccessStatusCode)
{
Logger.Instance.LogMessage(TracingLevel.ERROR, $"Could not fetch Symbols Data! Status Code: {response.StatusCode} Message: {response.ReasonPhrase}");
return;
}
string body = await response.Content.ReadAsStringAsync();
JArray jarr = JArray.Parse(body);
latestSymbols = jarr.ToObject <List <CryptoSymbolData> >();
lastRefresh = DateTime.Now;
CryptoCurrencyUpdated?.Invoke(this, new CryptoCurrencyUpdatedEventArgs(latestSymbols));
}
catch (Exception ex)
{
Logger.Instance.LogMessage(TracingLevel.ERROR, $"Error fetching Symbols Data: {ex}");
}
}
public async void GetLatestSymbols()
{
await refreshLock.WaitAsync();
try
{
if (latestSymbols == null || (DateTime.Now - lastRefresh).TotalSeconds > 2 * REFRESH_SYMBOLS_SECONDS)
{
await LoadSymbolsData();
}
else
{
CryptoCurrencyUpdated?.Invoke(this, new CryptoCurrencyUpdatedEventArgs(latestSymbols));
}
}
finally
{
refreshLock.Release();
}
}
