public async Task <RfqPauseErrorCode> AddAsync(string operationId, PauseSource source, Initiator initiator)
{
if (string.IsNullOrEmpty(operationId))
{
throw new ArgumentNullException(nameof(operationId));
}
var locker = _lock.GetOrAdd(operationId, new SemaphoreSlim(1, 1));
await locker.WaitAsync();
try
{
var existingPause = (await _pauseRepository.FindAsync(
operationId,
SpecialLiquidationSaga.OperationName,
NotCancelledPredicate))
.SingleOrDefault();
if (existingPause != null)
{
await _log.WriteWarningAsync(nameof(RfqPauseService), nameof(AddAsync), $"There is already pause with state [{existingPause.State}] for operation with id [{operationId}]");
return(RfqPauseErrorCode.AlreadyExists);
}
var executionInfo = await _executionInfoRepository
.GetAsync <SpecialLiquidationOperationData>(SpecialLiquidationSaga.OperationName, operationId);
if (executionInfo == null)
{
return(RfqPauseErrorCode.NotFound);
}
if (!AllowedOperationStatesToPauseIn.Contains(executionInfo.Data.State))
{
await _log.WriteWarningAsync(nameof(RfqPauseService), nameof(AddAsync),
$"There was an attempt to pause special liquidation with id {operationId} and state {executionInfo.Data.State}. Pause is possible in [{string.Join(',', AllowedOperationStatesToPauseIn)}] states only");
return(RfqPauseErrorCode.InvalidOperationState);
}
var pause = Pause.Create(
operationId,
SpecialLiquidationSaga.OperationName,
source,
initiator,
_dateService.Now());
await _pauseRepository.AddAsync(pause);
// todo: add audit log
}
finally
{
locker.Release();
}
return(RfqPauseErrorCode.None);
}
private static Pause GetPause(PauseState?state = null, PauseSource?source = PauseSource.Manual) => Pause.Create("Id",
"Name",
source ?? PauseSource.Manual,
"initiator",
DateTime.UtcNow,
state: state ?? PauseState.Pending,
cancellationInitiator: "cancellationInitiator");
