/// <summary>
/// Startup logic implementation.
/// </summary>
/// <returns></returns>
public async Task StartAsync()
{
//read last saved cache
var savedExchanges = await _genericBlobRepository.ReadAsync <List <Exchange> >(Constants.BlobContainerName,
Constants.BlobExchangesCache);
//retrieve current hedging positions
IReadOnlyList <ExternalPositionModel> currentHedgingPositions = null;
try
{
currentHedgingPositions = await _hedgingServiceClient.ExternalPositions.List();
}
catch (Exception ex)
{
await _log.WriteFatalErrorAsync(nameof(StartupManager), nameof(StartAsync), ex, DateTime.UtcNow);
throw;
}
//initialize ExchangeCache
var cachedData = _exchangeCache.Initialize(savedExchanges,
currentHedgingPositions?
.Where(x => _requiredExchanges.Any(exch => exch == x.Exchange))
.GroupBy(x => x.Exchange)
.ToDictionary(x => x.Key, x => x.Select(Position.Create).ToList())
?? new Dictionary <string, List <Position> >());
//save old blob data
await _genericBlobRepository.Write(Constants.BlobContainerName,
$"{Constants.BlobExchangesCache}_{DateTime.UtcNow:s}", savedExchanges);
//write new blob data
await _genericBlobRepository.Write(Constants.BlobContainerName, Constants.BlobExchangesCache, cachedData);
await _log.WriteInfoAsync(nameof(StartupManager), nameof(StartAsync),
$"ExchangeCache initialized with data: {string.Join("; ",cachedData)}.", DateTime.UtcNow);
}
public override async Task Execute()
{
var data = _exchangeCache.GetAll();
if (data == null || data.Count == 0)
{
return;
}
await _genericBlobRepository.Write(Constants.BlobContainerName, Constants.BlobExchangesCache, data);
await _log.WriteInfoAsync(nameof(DataSavingHandler), nameof(Execute),
$"Exchange cache saved to blob: {string.Join("; ", data)}.", DateTime.UtcNow);
}