Expire Cache

gistfile1.txt

using System;
using System.Web;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Umbraco.Core;
using Umbraco.Core.Publishing;
using Umbraco.Core.Logging;

namespace PioneerPump.Umbraco.Extensions.Events
{
    public class UpdateHelpers : ApplicationEventHandler
    {
        protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
        {
            base.ApplicationStarting(umbracoApplication, applicationContext);

            PublishingStrategy.Published += PublishingStrategy_Published;
        }
        
        void PublishingStrategy_UnPublished(IPublishingStrategy sender, global::Umbraco.Core.Events.PublishEventArgs<IContent> e)
        {
            ExpireCache(e.PublishedEntities);
        }
        
        void ContentService_Deleted(IContentService sender, global::Umbraco.Core.Events.DeleteEventArgs<IContent> e)
        {
            ExpireCache(e.DeletedEntities);
        }

        void PublishingStrategy_Published(IPublishingStrategy sender, global::Umbraco.Core.Events.PublishEventArgs<global::Umbraco.Core.Models.IContent> e)
        {
            ExpireCache(e.PublishedEntities);
        }
        
        void ExpireCache(IEnumerable<IContent> nodes) {
            foreach (var node in e.PublishedEntities)
            {
                //clear the helper if published or one of their children
                if (Helpers.Settings.Instance != null && (node.ContentType.Alias == "Settings" || node.Path.Contains("-1," + Helpers.Settings.Instance.Id)))
                {
                    Helpers.Settings.Instance = null;
                    LogHelper.Info<UpdateHelpers>("Clearing Settings Helper");
                }

                if (Helpers.Products.Instance != null && (node.ContentType.Alias == "RootProductFolder" || node.Path.Contains("-1,1072," + Helpers.Products.Instance.Id)))
                {
                    Helpers.Products.Instance = null;
                    LogHelper.Info<UpdateHelpers>("Clearing Products Helper");
                }

                if (Helpers.News.Instance != null && (node.ContentType.Alias == "NewsFolder" || node.Path.Contains("-1,1072," + Helpers.News.Instance.Id)))
                {
                    Helpers.News.Instance = null;
                    LogHelper.Info<UpdateHelpers>("Clearing News Helper");
                }

                if (Helpers.Events.Instance != null && (node.ContentType.Alias == "EventsFolder" || node.Path.Contains("-1,1072," + Helpers.Events.Instance.Id)))
                {
                    Helpers.Events.Instance = null;
                    LogHelper.Info<UpdateHelpers>("Clearing Events Helper");
                }

                if (Helpers.ProductFeatures.Instance != null && (node.ContentType.Alias == "ProductFeaturesFolder" || node.Path.Contains("-1,1072," + Helpers.ProductFeatures.Instance.Id)))
                {
                    Helpers.ProductFeatures.Instance = null;
                    LogHelper.Info<UpdateHelpers>("Clearing ProductFeatures Helper");
                }

                if (Helpers.Site.Instance != null && (node.ContentType.Alias == "SitePage" || node.Path.Contains("-1," + Helpers.Site.Instance.Id)))
                {
                    Helpers.Site.Instance = null;
                    LogHelper.Info<UpdateHelpers>("Site Helper");
                }
            }
        }
    }
}