public async Task LoadPricing()
{
var tableName = Constants.PricingTable;
await CreateTable(tableName);
CommandLine.InformUser("Loader", "Generating data for " + tableName);
var rows = Generator.GeneratePricing(Constants.PricingIdsToCreate, Constants.PricingRowsPerId);
var count = 0;
const int batchSize = BatchAndPoolSize;
const int total = Constants.PricingIdsToCreate * Constants.PricingRowsPerId / batchSize;
var cursor = Console.CursorTop;
foreach (var batch in rows.Batch(batchSize))
{
var rowTasks = batch.Select(row => Task.Run(() =>
{
// Get key
var key = (string)row["Key"];
// Remove from hash for ease
row.Remove("Key");
// Write the row
_dataClient.WriteRowAsync(tableName, key, row.Select(kv => BigChange.CreateCellUpdate(Constants.ColumnFamilyName, kv.Key, kv.Value.ToString()))).Wait();
})).ToArray();
// Keep user updated
Console.CursorTop = cursor;
CommandLine.InformUser("Loader", String.Format("Writing {0}: {1}%", tableName, count++ *100 / total));
Task.WhenAll(rowTasks).Wait(); // silly syntax to avoid resharper warning
}
// Keep user updated
Console.CursorTop = cursor;
CommandLine.InformUser("Loader", String.Format("Wrote {0}: 100% ", tableName));
}
private IEnumerable <BigChange> ExtractChanges <T>(ReflectionCache reflection, T instance)
{
var result = new List <BigChange>();
reflection.ExtractChanges(instance, (familyName, fieldName, value) => result.Add(BigChange.CreateCellUpdate(familyName, fieldName, value)));
return(result);
}
