public async Task <State.Snapshot> ProcessAsync(State.Snapshot snapshot, CancellationToken cancellationToken)
{
var lastChangeToTrainingData = await _dataProvider.GetDateOfLastChangeAsync(cancellationToken);
var faceData = _dataProvider.GetBalancedItems(cancellationToken);
var model = await _recognitionEngine.TrainAsync(faceData, cancellationToken);
await _modelPersistor.SaveModelAsync(model, cancellationToken);
return(new State.Snapshot {
LastTrainingDataUpdate = lastChangeToTrainingData
});
}
public async Task <bool> RequiresProcessingAsync(State.Snapshot snapshot, CancellationToken cancellationToken)
{
var lastChangeToTrainingData = await _dataProvider.GetDateOfLastChangeAsync(cancellationToken);
return((lastChangeToTrainingData ?? DateTimeOffset.MinValue) > (snapshot.LastTrainingDataUpdate ?? DateTimeOffset.MinValue));
}