in src/checkoutservice/main.go [414:431]
func (cs *checkoutService) prepOrderItems(ctx context.Context, items []*pb.CartItem, userCurrency string) ([]*pb.OrderItem, error) {
out := make([]*pb.OrderItem, len(items))
for i, item := range items {
product, err := cs.productCatalogSvcClient.GetProduct(ctx, &pb.GetProductRequest{Id: item.GetProductId()})
if err != nil {
return nil, fmt.Errorf("failed to get product #%q", item.GetProductId())
}
price, err := cs.convertCurrency(ctx, product.GetPriceUsd(), userCurrency)
if err != nil {
return nil, fmt.Errorf("failed to convert price of %q to %s", item.GetProductId(), userCurrency)
}
out[i] = &pb.OrderItem{
Item: item,
Cost: price}
}
return out, nil
}