private void CreatedVirtualPath(object sender, UrlBuilderEventArgs urlBuilderEventArgs)
{
var cdnConfiguration = CdnConfigurationSection.GetConfiguration();
var originalPath = urlBuilderEventArgs.UrlBuilder.Path;
if (originalPath.StartsWith(cdnConfiguration.AdminPath))
{
return;
}
var enabled = cdnConfiguration.Enabled;
if (!enabled)
{
return;
}
object contentReferenceObject;
if (!urlBuilderEventArgs.RouteValues.TryGetValue(RoutingConstants.NodeKey, out contentReferenceObject))
{
return;
}
var routedContentLink = contentReferenceObject as ContentReference;
if (ContentReference.IsNullOrEmpty(routedContentLink))
{
return;
}
// Check content type is Image or not
var imageData = DataFactory.Instance.Get <IContent>(routedContentLink) as ImageData;
if (imageData == null)
{
return;
}
// Check access rights
var securable = imageData as ISecurable;
if ((securable.GetSecurityDescriptor().GetAccessLevel(PrincipalInfo.AnonymousPrincipal) & AccessLevel.Read) != AccessLevel.Read)
{
return;
}
var baseUrl = CdnConfigurationSection.GetConfiguration().Url;
if (string.IsNullOrWhiteSpace(baseUrl))
{
baseUrl = SiteDefinition.Current.SiteUrl.AbsoluteUri;
}
urlBuilderEventArgs.UrlBuilder.Uri = new Uri(string.Format("{0}/{1}", baseUrl.TrimEnd('/'), originalPath.TrimStart('/')));
}
private void OnBeginRequest(object sender, EventArgs e)
{
var url = HttpContext.Current.Request.Url.AbsoluteUri;
var cdnConfiguration = CdnConfigurationSection.GetConfiguration();
if (string.IsNullOrEmpty(cdnConfiguration.Url) || !url.StartsWith(cdnConfiguration.Url))
{
return;
}
HttpContext.Current.Items[CdnConfigurationSection.GetConfiguration().ItemKey] = true;
}
protected override void SetCachePolicy(HttpContextBase context, DateTime fileChangedDate)
{
var isCdnRequest = HttpContext.Current.Items[CdnConfigurationSection.GetConfiguration().ItemKey];
if (isCdnRequest == null || !(bool)isCdnRequest)
{
base.SetCachePolicy(context, fileChangedDate);
return;
}
fileChangedDate = fileChangedDate > DateTime.UtcNow ? DateTime.UtcNow : fileChangedDate;
context.Response.Cache.SetLastModified(fileChangedDate);
context.Response.Cache.SetCacheability(HttpCacheability.Public);
context.Response.Cache.SetExpires(DateTime.UtcNow.AddYears(1));
context.Response.Cache.SetValidUntilExpires(true);
context.Response.Cache.VaryByParams.IgnoreParams = true;
context.Response.Cache.SetOmitVaryStar(true);
context.Response.Cache.SetNoServerCaching();
}
