public async Task <SingleQuoteQueryResult> GetSingleQuoteData(StockQuery query, string ticker, string exchangeName)
{
var alphaVantageQuery = new AlphaVantageQuery(QueryFunctionType.SingleQuote, ticker);
var alphaVantageQueryResult = await GetQueryData <SingleQuoteData>(query.SymbolId, alphaVantageQuery, _parserFactory.GetSingleQuoteDataParser());
if (alphaVantageQueryResult.HasError)
{
return(new SingleQuoteQueryResult(alphaVantageQueryResult.ErrorMessage));
}
return(new SingleQuoteQueryResult(ticker, alphaVantageQueryResult.Data));
}
/// <summary>
/// Run the given query against Alpha Vantage client.
/// Adds the necessary headers such api key and from the query object
/// </summary>
/// <param name="query">Query object used to generate the request</param>
/// <returns></returns>
private async Task <AlphaVantageQueryResult <TData> > GetQueryData <TData>(int symbolId, AlphaVantageQuery query, IAlphaVantageDataParser <TData> parser)
where TData : StockData
{
AlphaVantageQueryResult <TData> queryResult;
_logger.LogWarning(symbolId.ToString());
try
{
string urlWithQueryString = QueryHelpers.AddQueryString(_alphaVantageOptions.Url, query.GetParameters());
urlWithQueryString = QueryHelpers.AddQueryString(urlWithQueryString, AlphaVantageQueryKeys.ApiKey, _alphaVantageOptions.ApiKey);
var client = _clientFactory.CreateClient(_alphaVantageOptions.ClientName);
_logger.LogTrace("Executing query http request url: {url}", urlWithQueryString);
var response = await client.GetAsync(urlWithQueryString);
TData data = null;
if (response.IsSuccessStatusCode)
{
string json = null;
try
{
json = await response.Content.ReadAsStringAsync();
data = parser.ParseJson(symbolId, json);
queryResult = new AlphaVantageQueryResult <TData>(data);
}
catch (Exception) when(json.Contains("Error Message"))
{
var errorJson = await response.Content.ReadAsStringAsync();
var errorObject = JsonConvert.DeserializeObject <AlphaVantageQueryError>(errorJson);
queryResult = new AlphaVantageQueryResult <TData>(error: errorObject);
_logger.LogError("Alphavantage Error for query: {error}", query.Ticker, JsonConvert.SerializeObject(errorObject));
}
catch (Exception ex)
{
queryResult = new AlphaVantageQueryResult <TData>(errorMessage: $"Exception: {ex.Message}");
_logger.LogError(ex, "Failed to parse alphavantage data for query {query}", query.Ticker);
}
}
else
{
_logger.LogError("Failed to retrieve data from AlphaVantage: {reason}", response.ReasonPhrase);
queryResult = new AlphaVantageQueryResult <TData>(errorMessage: response.ReasonPhrase);
}
}
catch (Exception ex)
{
_logger.LogError(ex, "Error Executing query http request");
queryResult = new AlphaVantageQueryResult <TData>(errorMessage: ex.Message);
}
return(queryResult);
}
