private async Task SubscribeToSymbols()
{
if (_symbolsSubscribeTask != null)
{
return;
}
try
{
try
{
await _symbolsStatisticSemaphore.WaitAsync();
if (_symbolsSubscribeTask != null)
{
return;
}
_log.LogInformation($"Subscribe to symbols");
_symbolStatisticCancellationTokenSource?.Cancel();
_symbolStatisticCancellationTokenSource?.Dispose();
_symbolStatisticCancellationTokenSource = new CancellationTokenSource();
_symbolStatisticsWebSocketClient = _serviceProvider.GetService <ISymbolStatisticsWebSocketClient>();
_symbolsSubscribeTask = _symbolStatisticsWebSocketClient.SubscribeAsync(_onSymbolStatisticUpdate, _symbolStatisticCancellationTokenSource.Token);
SymbolsDisconnectionTimerInitialize();
}
finally
{
_symbolsStatisticSemaphore.Release();
}
await _symbolsSubscribeTask;
_symbolsSubscribeTask = null;
}
catch (Exception)
{
_symbolsSubscribeTask = null;
OnSymbolStatisticDisconnect(true);
}
}
private async Task SubscribeToSymbols(bool reConnect = false)
{
_log.LogInformation($"Subscribe to symbols");
if (_symbolsSubscribeTask != null && !reConnect)
{
return;
}
try
{
_symbolStatisticCancellationTokenSource?.Cancel();
_symbolStatisticCancellationTokenSource?.Dispose();
_symbolStatisticCancellationTokenSource = new CancellationTokenSource();
_symbolStatisticsWebSocketClient = _serviceProvider.GetService <ISymbolStatisticsWebSocketClient>();
_symbolsSubscribeTask = _symbolStatisticsWebSocketClient.SubscribeAsync(_onSymbolStatisticUpdate, _symbolStatisticCancellationTokenSource.Token);
if (!reConnect)
{
SymbolsReConnectionTimerInitialize();
}
await _symbolsSubscribeTask;
}
catch (Exception ex)
{
_symbolsSubscribeTask = null;
_log.LogError($"Error with symbols statistic websocket {ex.Message}", ex);
_onSymbolStatisticError?.Invoke();
}
}
/// <summary> /// /// </summary> /// <param name="client"></param> /// <param name="symbol"></param> /// <param name="token"></param> /// <returns></returns> public static Task SubscribeAsync(this ISymbolStatisticsWebSocketClient client, string symbol, CancellationToken token) => client.SubscribeAsync(symbol, null, token);