/// <summary>
/// Responds to the changes in exchange data.
/// </summary>
/// <param name="exchangeDelta">Exchange delta stream data.</param>
protected static void OnExchangeDeltaUpdate(BittrexExchangeState exchangeDelta)
{
if (_streams.TryGetValue(exchangeDelta.MarketName, out var stream))
{
stream.UpdateExchangeDelta(new BittrexExchangeStateProvider(exchangeDelta));
}
}
/// <summary>
/// get basic/initial info of a specific market
/// 500 Buys
/// 100 Fills
/// 500 Sells
/// </summary>
/// <param name="marketName">The name of the market to subscribe on</param>
/// <param name="onUpdate">The update event handler</param>
/// <returns>ApiResult whether subscription was successful. The Result property contains the Stream Id which can be used to unsubscribe the stream again</returns>
public async Task <BittrexApiResult <int> > QueryExchangeStateAsync(string marketName, Action <BittrexExchangeState> onUpdate)
{
return(await Task.Run(() =>
{
log.Write(LogVerbosity.Debug, $"Going to call QueryExchangeState for market: {marketName}");
if (!CheckConnection())
{
return ThrowErrorMessage <int>(BittrexErrors.GetError(BittrexErrorKey.CantConnectToServer));
}
// gives direkt return -> no subscription
// https://stackoverflow.com/questions/11140164/signalr-console-app-example
proxy.Invoke <JObject>("QueryExchangeState", marketName).ContinueWith(task => {
if (task.IsFaulted)
{
log.Write(LogVerbosity.Error, String.Format("There was an error calling send: {0}", task.Exception.GetBaseException()));
}
else
{
string json = "";
try
{
json = task.Result.ToString();
BittrexExchangeState StreamData = JsonConvert.DeserializeObject <BittrexExchangeState>(json);
onUpdate(StreamData);
}
catch (Exception e)
{
log.Write(LogVerbosity.Warning, $"Received an event but an unknown error occured. Message: {e.Message}, Received data: {json}");
}
}
});
return new BittrexApiResult <int>()
{
Success = true
};
}).ConfigureAwait(false));
}
/// <summary>
/// Initializes the new exchange state provider for Bittrex exchanger.
/// </summary>
/// <param name="source">Exchange state data source.</param>
public BittrexExchangeStateProvider(BittrexExchangeState source)
{
Source = source;
}
