private async Task Handle(CreateSnapshotCommand command, IEventPublisher publisher)
{
//deduplication is inside _snapshotService.MakeTradingDataSnapshot
try
{
await _snapshotService.MakeTradingDataSnapshot(command.TradingDay, command.OperationId);
publisher.PublishEvent(new SnapshotCreatedEvent
{
OperationId = command.OperationId,
CreationTime = _dateService.Now(),
});
}
catch (Exception exception)
{
await _log.WriteErrorAsync(nameof(EodCommandsHandler), nameof(CreateSnapshotCommand),
exception);
publisher.PublishEvent(new SnapshotCreationFailedEvent
{
OperationId = command.OperationId,
CreationTime = _dateService.Now(),
FailReason = exception.Message,
});
}
}
public async Task <string> MakeTradingDataSnapshot([FromQuery] DateTime tradingDay, [FromQuery] string correlationId = null)
{
if (tradingDay == default)
{
throw new Exception($"{nameof(tradingDay)} must be set");
}
if (string.IsNullOrWhiteSpace(correlationId))
{
correlationId = _identityGenerator.GenerateGuid();
}
return(await _snapshotService.MakeTradingDataSnapshot(tradingDay, correlationId));
}
public async Task Handle(MarketStateChangedEvent e)
{
if (!e.IsPlatformClosureEvent())
{
return;
}
var tradingDay = e.EventTimestamp.Date;
await _log.WriteInfoAsync(nameof(PlatformClosureProjection), nameof(Handle), e.ToJson(),
$"Platform is being closed. Starting trading snapshot backup for [{tradingDay}]");
var result = await _snapshotService.MakeTradingDataSnapshot(e.EventTimestamp.Date,
_identityGenerator.GenerateGuid(),
SnapshotStatus.Draft);
await _log.WriteInfoAsync(nameof(PlatformClosureProjection),
nameof(Handle),
e.ToJson(),
result);
}
