How to cancel publishing site operation programatically

Question

We have many Sitecore admin users in Sitecore. I want Full site publish only allowed to some admin users and not to all admin users.

We can't hide the "Publish Site" option as some of the admin require to access it. When any other admin user, who is not from authorized admin user list, try to publish the full site, I want to cancel the publish operation itself. Below is the code which I am referring to cancel the operation on publish:begin event, but unfortunately, its not cancelling the publishing operation?

public void OnPublishStart(object sender, EventArgs args)
    {
        try
        {
            Publisher publisher = Sitecore.Events.Event.ExtractParameter(args, 0) as Publisher;

            if (publisher.Options.Mode == PublishMode.Full || publisher.Options.Mode == PublishMode.Smart || publisher.Options.Mode == PublishMode.Incremental)
            {
                ((SitecoreEventArgs)args).Result.Cancel = true;

                publisher = null;
                args = null;
                sender = null;

                return;
            }
        }
        catch (Exception ex)
        {
            Log.Error("Error : " + ex.ToString(), this);
        }
    }

Do anybody have any workaround to cancel the publish site operation programmatically?

Answer 1

You need to have code in the publish item process to do it

You won't be able to just "find" the task running and abort or delete it in any way - you have to get "in there" and interact with the task directly.

There are ways. The most creative I've found, essentially works like this:

1. Have a Singleton class instantiated, as part of your <initialize> pipeline
2. Insert a bit of code into the publishItem pipeline, checking if it should terminate (by checking on the Singleton)
3. If so, throw an exception. This is the only way to abort the publish thread

With this in place, all you need is to tell the Singleton you want publishing terminated.

All of this is demonstrated in Mike Edward's Glass.PublishViewer module on GitHub.

• The Inizialize and PublishItem processors
• The PublishJobManager (the Singleton)