public bool Process(StepContext stepContext, IStepRepository stepRepository)
{
bool success = true;
StepContext ctx = StepContext.InitialRun(stepContext, _chunkSize);
while (ctx.HasNext)
{
long newStepId = stepRepository.InsertStep(ctx.StepName, ctx.NextStepIndex);
bool exceptionThrown = false;
bool skip = false;
bool error = false;
List <TInput> items = Enumerable.Empty <TInput>().ToList();
TOutput[] processed = Enumerable.Empty <TOutput>().ToArray();
try
{
items = _reader.Read(ctx.StepIndex, _chunkSize).ToList();
processed = items.Select(item => _processor.Process(item)).ToArray();
if (processed.Any())
{
success &= _writer.Write(processed);
}
}
catch (Exception ex)
{
error = true;
skip = _skipPolicy.IsSatisfiedBy(stepRepository, new SkipContext(ctx.StepName, ctx.NextStepIndex, ex));
if (!skip)
{
exceptionThrown = true;
throw;
}
}
finally
{
if (!exceptionThrown)
{
ctx = StepContext.Increment(ctx, items.Count, processed.Length, skip);
}
stepRepository.UpdateStep(newStepId, processed.Length, error, skip);
}
}
return(success);
}