public async Task Handle(StartLiquidationInternalCommand command,
IEventPublisher publisher)
{
#region Private Methods
void PublishFailedEvent(string reason)
{
publisher.PublishEvent(new LiquidationFailedEvent
{
OperationId = command.OperationId,
CreationTime = _dateService.Now(),
Reason = reason,
LiquidationType = command.LiquidationType.ToType <LiquidationTypeContract>(),
AccountId = command.AccountId,
AssetPairId = command.AssetPairId,
Direction = command.Direction?.ToType <PositionDirectionContract>(),
});
_liquidationEndEventChannel.SendEvent(this, new LiquidationEndEventArgs
{
OperationId = command.OperationId,
CreationTime = _dateService.Now(),
AccountId = command.AccountId,
LiquidatedPositionIds = new List <string>(),
FailReason = reason,
});
}
#endregion
#region Validations
if (string.IsNullOrEmpty(command.AccountId))
{
PublishFailedEvent("AccountId must be specified");
return;
}
if (_accountsCache.TryGet(command.AccountId) == null)
{
PublishFailedEvent("Account does not exist");
return;
}
#endregion
var(executionInfo, _) = await _operationExecutionInfoRepository.GetOrAddAsync(
operationName : LiquidationSaga.OperationName,
operationId : command.OperationId,
factory : () => new OperationExecutionInfo <LiquidationOperationData>(
operationName: LiquidationSaga.OperationName,
id: command.OperationId,
lastModified: _dateService.Now(),
data: new LiquidationOperationData
{
State = LiquidationOperationState.Initiated,
AccountId = command.AccountId,
AssetPairId = command.AssetPairId,
QuoteInfo = command.QuoteInfo,
Direction = command.Direction,
LiquidatedPositionIds = new List <string>(),
ProcessedPositionIds = new List <string>(),
LiquidationType = command.LiquidationType,
OriginatorType = command.OriginatorType,
AdditionalInfo = command.AdditionalInfo,
StartedAt = command.CreationTime
}
));
if (executionInfo.Data.State == LiquidationOperationState.Initiated)
{
if (!_accountsCache.TryStartLiquidation(command.AccountId, command.OperationId,
out var currentOperationId))
{
if (currentOperationId != command.OperationId)
{
PublishFailedEvent(
$"Liquidation is already in progress. Initiated by operation : {currentOperationId}");
return;
}
}
_chaosKitty.Meow(
$"{nameof(StartLiquidationInternalCommand)}:" +
$"Publish_LiquidationStartedInternalEvent:" +
$"{command.OperationId}");
publisher.PublishEvent(new LiquidationStartedEvent
{
OperationId = command.OperationId,
CreationTime = _dateService.Now(),
AssetPairId = executionInfo.Data.AssetPairId,
AccountId = executionInfo.Data.AccountId,
LiquidationType = executionInfo.Data.LiquidationType.ToType <LiquidationTypeContract>()
});
}
}
