public async Task AddCrossInstrumentAsync(string assetPairId, CrossInstrument crossInstrument)
{
IReadOnlyCollection <Instrument> instruments = await GetAllAsync();
if (instruments.Any(o => o.AssetPairId == crossInstrument.AssetPairId ||
o.CrossInstruments?.Any(p => p.AssetPairId == crossInstrument.AssetPairId) ==
true))
{
throw new InvalidOperationException("The instrument already used");
}
Instrument instrument = await GetByAssetPairIdAsync(assetPairId);
instrument.AddCrossInstrument(crossInstrument);
await _crossInstrumentRepository.AddAsync(assetPairId, crossInstrument);
_cache.Set(instrument);
_log.InfoWithDetails("Cross instrument was added to the instrument", instrument);
}