void IBaseProcess.HandleVolume(IVolumeHandler handler, IProcessExecutionContextWithVolume processContext,
CancellationToken cancellationToken)
{
var volumeGenerated = processContext.ProcessState.IsVolumeGenerated;
if (!volumeGenerated || CanRegenerateVolume)
{
var volume = GetVolume(processContext);
if (volume != null)
{
handler.Handle(volume, processContext, cancellationToken); //volume visitor
}
}
}
public void Handle <T>(IEnumerable <T> volume, IProcessExecutionContextWithVolume processContext, CancellationToken token)
{
if (volume == null)
{
processContext.Logger.Info("No volume returned");
return;
}
bool hasVolume = false;
var serializer = _serializersFactory.GetSerializer <T>();
int currentCount = 0;
int batchSize = 100;
try
{
Bus.HandleDbCommand(new DbAction(DbActions.Transaction, () => //create transaction in Db Bus pipeline
{
var volumeDeletedCount = ExecuteNonQuery(Constant.SQLDeleteProcessVolume, processContext.ProcessState.Id);
if (volumeDeletedCount > 0)
{
processContext.Logger.Warn($"Existing volume {volumeDeletedCount} deleting");
}
}));
//using (var unitOfWork = ) //IsolationLevel.Snapshot //todo check isolation level with db team, is it enabled by default
{
foreach (var v in volume)
{
var payLoad = serializer.SerializeToString(v);
IReadWritableTaskState state = CreateNew();
state.Payload = payLoad;
state.ProcessId = processContext.ProcessState.Id;
state.CurrentState = ResultStatus.Empty.Name;
currentCount++;
if (currentCount >= batchSize)
{
token.ThrowIfCancellationRequested();
hasVolume = true;
//Persist();
currentCount = 0;
//Clear();//remove persisted items
}
}
//if (Entity.Count>0)
{
token.ThrowIfCancellationRequested();
hasVolume = true;
// Persist();
}
//Commit();
}
}
finally
{
//dispose / rollback
}
if (hasVolume)
{
processContext.SetVolumeGenerated();
}
}
