protected override void HandleMessage(IEnumerable <Action <SymbolStatisticsEventArgs> > callbacks, string stream, string json)
{
try
{
SymbolStatisticsEventArgs eventArgs;
if (json.IsJsonArray())
{
// Simulate a single event time.
var eventTime = DateTime.UtcNow.ToTimestamp().ToDateTime();
var statistics = JArray.Parse(json).Select(DeserializeSymbolStatistics).ToArray();
eventArgs = new SymbolStatisticsEventArgs(eventTime, statistics);
}
else
{
var jObject = JObject.Parse(json);
var eventType = jObject["e"].Value <string>();
if (eventType == "24hrTicker")
{
var eventTime = jObject["E"].Value <long>().ToDateTime();
var statistics = DeserializeSymbolStatistics(jObject);
eventArgs = new SymbolStatisticsEventArgs(eventTime, statistics);
}
else
{
Logger?.LogWarning($"{nameof(SymbolStatisticsClient)}.{nameof(HandleMessage)}: Unexpected event type ({eventType}).");
return;
}
}
try
{
if (callbacks != null)
{
foreach (var callback in callbacks)
{
callback(eventArgs);
}
}
StatisticsUpdate?.Invoke(this, eventArgs);
}
catch (OperationCanceledException) { /* ignore */ }
catch (Exception e)
{
Logger?.LogWarning(e, $"{nameof(SymbolStatisticsClient)}.{nameof(HandleMessage)}: Unhandled aggregate trade event handler exception.");
}
}
catch (OperationCanceledException) { /* ignore */ }
catch (Exception e)
{
Logger?.LogError(e, $"{nameof(SymbolStatisticsClient)}.{nameof(HandleMessage)}");
}
}
/// <summary>
/// Invokes event update when statistics are updated.
/// </summary>
private void OnStatisticsUpdate()
{
StatisticsUpdateEventArgs eventArgs = new StatisticsUpdateEventArgs()
{
Statistics = m_statistics
};
StatisticsUpdate?.Invoke(this, eventArgs);
}
protected override void OnWebSocketEvent(WebSocketStreamEventArgs args, IEnumerable <Action <SymbolStatisticsEventArgs> > callbacks)
{
Logger?.LogDebug($"{nameof(SymbolStatisticsWebSocketClient)}: \"{args.Json}\"");
try
{
SymbolStatisticsEventArgs eventArgs;
if (args.Json.IsJsonArray())
{
// Simulate a single event time.
var eventTime = DateTime.UtcNow.ToTimestamp().ToDateTime();
var statistics = JArray.Parse(args.Json).Select(DeserializeSymbolStatistics).ToArray();
eventArgs = new SymbolStatisticsEventArgs(eventTime, args.Token, statistics);
}
else
{
var jObject = JObject.Parse(args.Json);
var eventType = jObject["e"].Value <string>();
if (eventType == "24hrTicker")
{
var eventTime = jObject["E"].Value <long>().ToDateTime();
var statistics = DeserializeSymbolStatistics(jObject);
eventArgs = new SymbolStatisticsEventArgs(eventTime, args.Token, statistics);
}
else
{
Logger?.LogWarning($"{nameof(SymbolStatisticsWebSocketClient)}.{nameof(OnWebSocketEvent)}: Unexpected event type ({eventType}).");
return;
}
}
try
{
if (callbacks != null)
{
foreach (var callback in callbacks)
{
callback(eventArgs);
}
}
StatisticsUpdate?.Invoke(this, eventArgs);
}
catch (OperationCanceledException) { }
catch (Exception e)
{
if (!args.Token.IsCancellationRequested)
{
Logger?.LogError(e, $"{nameof(SymbolStatisticsWebSocketClient)}: Unhandled aggregate trade event handler exception.");
}
}
}
catch (OperationCanceledException) { }
catch (Exception e)
{
if (!args.Token.IsCancellationRequested)
{
Logger?.LogError(e, $"{nameof(SymbolStatisticsWebSocketClient)}.{nameof(OnWebSocketEvent)}");
}
}
}
/// <summary>
/// Deserialize JSON and raise <see cref="SymbolStatisticsTradeEventArgs"/> event.
/// </summary>
/// <param name="json"></param>
/// <param name="token"></param>
/// <param name="callback"></param>
protected override void DeserializeJsonAndRaiseEvent(string json, CancellationToken token, Action <SymbolStatisticsEventArgs> callback = null)
{
Throw.IfNullOrWhiteSpace(json, nameof(json));
Logger?.LogDebug($"{nameof(SymbolStatisticsWebSocketClient)}: \"{json}\"");
try
{
SymbolStatisticsEventArgs eventArgs;
if (json.IsJsonArray())
{
// Simulate a single event time.
var eventTime = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
var statistics = JArray.Parse(json).Select(jToken => DeserializeSymbolStatistics(jToken)).ToArray();
eventArgs = new SymbolStatisticsEventArgs(eventTime, token, statistics);
}
else
{
var jObject = JObject.Parse(json);
var eventType = jObject["e"].Value <string>();
if (eventType == "24hrTicker")
{
var eventTime = jObject["E"].Value <long>();
var statistics = DeserializeSymbolStatistics(jObject);
eventArgs = new SymbolStatisticsEventArgs(eventTime, token, statistics);
}
else
{
Logger?.LogWarning($"{nameof(SymbolStatisticsWebSocketClient)}.{nameof(DeserializeJsonAndRaiseEvent)}: Unexpected event type ({eventType}).");
return;
}
}
try
{
callback?.Invoke(eventArgs);
StatisticsUpdate?.Invoke(this, eventArgs);
}
catch (OperationCanceledException) { }
catch (Exception e)
{
if (!token.IsCancellationRequested)
{
Logger?.LogError(e, $"{nameof(SymbolStatisticsWebSocketClient)}: Unhandled aggregate trade event handler exception.");
}
}
}
catch (OperationCanceledException) { }
catch (Exception e)
{
if (!token.IsCancellationRequested)
{
Logger?.LogError(e, $"{nameof(SymbolStatisticsWebSocketClient)}.{nameof(DeserializeJsonAndRaiseEvent)}");
}
}
}
