private Price TransformProxyPriceToPrice(ProxyPrice price)
{
Price newPrice = new Price();
newPrice.PartnerId = price.PartnerId;
newPrice.ProductSku = price.ProductSku;
newPrice.Value = price.Value;
return(newPrice);
}
/// <summary>
/// Retrieve the price for a particular SKU that applies to the currently logged on user. This price includes all the discounts that have been
/// applied to it for the current partner.
/// </summary>
/// <param name="sku">The SKU to retrieve pricing for.</param>
/// <returns>The price.</returns>
public Price GetPriceBySku(string sku)
{
Price price = null;
//prices are stored per sku and partner
IPartnerSiteDirectory partnerSiteDirectory =
SharePointServiceLocator.Current.GetInstance <IPartnerSiteDirectory>();
string key = string.Format(CultureInfo.InvariantCulture, "{0}:{1}:{2}", typeof(Price).FullName, sku,
partnerSiteDirectory.GetCurrentPartnerId());
if (cache[key] == null)
{
// Impersonate as the AppPool account:
// As part of the trusted facade, we want to ensure that only the SharePoint server can access
// the WCF LOB services. In order to check that, we have added a PrincipalPermissionAttribute that demands
// that the calling account is part of a specific group. The app pool account is also part of that group
// so we need to impersonate as the app pool account.
using (HostingEnvironment.Impersonate())
{
// Dispose of the proxy after usage, to ensure the resources are cleaned up:
// Creating proxy classes can potentially be a heavy operation, so you might consider
// creating a pool of proxy objects.
using (DisposableProxy <IPricing> client = GetClient())
{
price = TransformProxyPriceToPrice(client.Proxy.GetPriceBySku(sku));
}
}
if (price != null)
{
cache.Add(key, price, null, Cache.NoAbsoluteExpiration, TimeSpan.FromMinutes(5f),
CacheItemPriority.Normal, null);
}
}
else
{
price = cache[key] as Price;
}
return(price);
}
