public Task <ImportBatchResult> RunAsync(ImportBatch batch, CancellationToken cancellationToken)
{
if (batch == null)
{
throw new ArgumentNullException(nameof(batch));
}
var profile = _importProfileStorage.GetImportProfile(batch.ImportProfileName);
if (profile == null)
{
throw new Exception($"Import profile '{batch.ImportProfileName}' does not exist.");
}
var importType = _importTypeStorage.GetImportType(profile.ImportTypeName);
var worker = _importWorkerFactory.Create(importType.WorkerType);
var context = new ImportWorkerContext
{
Batch = batch,
ImportType = importType,
Profile = profile
};
return(worker.RunAsync(context, cancellationToken));
}
public async Task <ImportBatchResult> RunAsync(
ImportWorkerContext context,
CancellationToken cancellationToken)
{
Context = context ?? throw new ArgumentNullException(nameof(context));
var result = new ImportBatchResult();
using (var stream = File.OpenRead(context.Batch.FileName))
{
using (var streamReader = new StreamReader(stream, Encoding.UTF8, true, 128))
{
bool skipFirstRow = context.Profile.IsFirstRowHeading;
int rowIndex = -1;
string line;
while ((line = streamReader.ReadLine()) != null)
{
if (cancellationToken.IsCancellationRequested)
{
//throw or skip??
}
rowIndex += 1;
if (skipFirstRow)
{
skipFirstRow = false;
continue;
}
var columns = ParseLine(line, context.Profile);
var row = MapColumns(columns, context.Profile);
var validationResult = await ValidateRowAsync(row, rowIndex);
if (validationResult != null)
{
result.Failures.Add(validationResult);
//todo log
continue;
}
await OnImportRowAsync(row, rowIndex);
}
}
}
return(result);
}
