public async Task GetCurrencyTodaysRatesAsync(string symbol, CancellationToken stoppingToken)
{
try
{
while (!stoppingToken.IsCancellationRequested)
{
var response =
await _httpClient.GetAsync($"a/{symbol}/today/?format=json", stoppingToken);
if (response.IsSuccessStatusCode == false)
{
_logger.LogCritical("NBP API Failed with HTTP Status Code {statusCode} at: {time}",
response.StatusCode, DateTimeOffset.Now);
continue;
}
using var sr = new StreamReader(await response.Content.ReadAsStreamAsync());
using var jsonTextReader = new JsonTextReader(sr);
var exchangeRateResult = _serializer.Deserialize <Currency>(jsonTextReader);
await _currencyManager.CreateAsync(exchangeRateResult);
if (exchangeRateResult.Rates.Any())
{
foreach (var rate in exchangeRateResult.Rates)
{
_logger.LogInformation($"{symbol} = Bid: {rate.Bid}, Ask: {rate.Ask}");
}
}
else
{
_logger.LogCritical($"Exchange rate not returned from API.");
}
}
}
catch (HttpRequestException ex)
{
_logger.LogCritical($"{nameof(HttpRequestException)}: {ex.Message}");
}
}