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  • Jay 425 posts 652 karma points
    Nov 01, 2019 @ 11:57
    Jay
    0

    PageCacheRefresher in Umbraco V8

    Anyone knows what's the new PageCacheRefresher events on distributed servers on the new Umbraco V8?

    Thanks

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  • Marc Goodson 2157 posts 14435 karma points MVP 9x c-trib
    Nov 01, 2019 @ 20:44
    Marc Goodson
    102

    Hi JLon

    I think you might be after this?

    public class RegisteringCacheUpdatedEvents : IUserComposer
{
    public void Compose(Umbraco.Core.Composing.Composition composition)
    {
        ContentCacheRefresher.CacheUpdated += ContentCacheRefresher_CacheUpdated;
        MediaCacheRefresher.CacheUpdated += MediaCacheRefresher_CacheUpdated;
    }

    private void MediaCacheRefresher_CacheUpdated(MediaCacheRefresher sender, CacheRefresherEventArgs e)
    {
       //media cache updated
    }

    private void ContentCacheRefresher_CacheUpdated(ContentCacheRefresher sender, CacheRefresherEventArgs e)
    {
        //content cache updated!
    }
}

    regards

    Marc

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  • Jay 425 posts 652 karma points
    Nov 04, 2019 @ 12:00
    Jay
    0

    Thanks Marc :)

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  • Jay 425 posts 652 karma points
    Dec 04, 2019 @ 15:44
    Jay
    0

    Hey Marc,

    Do you also know if there's a way we can detect the type of the event.

    Eg if it's a Save and Publish or even if it's Unpublishing on a content?

    When I debug through the e.MessageObject within the ContentCacheRefresher_CacheUpdated()

    It keeps coming back as MessageType.RefreshByPayload for Save and Publish or Unpublishing

    Thanks

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  • Marc Goodson 2157 posts 14435 karma points MVP 9x c-trib
    Dec 07, 2019 @ 08:22
    Marc Goodson
    2

    Hi Jeric

    I can't find a good example of this, and I'm guessing a little but I think knowing the MessageType is RefreshByPayload, means you can cast the MessageObject into they type of Payload, and loop through each Payload, and it's ChangeType to determine a little about what is going on.

    Have a look at the Examine ContentCacheRefresherUpdated event handling implementation in the core:

    https://github.com/umbraco/Umbraco-CMS/blob/13488be0a3280c966ca5115c1cf75cc1979e5819/src/Umbraco.Web/Search/ExamineComponent.cs#L133

      foreach (var payload in (ContentCacheRefresher.JsonPayload[])args.MessageObject)
            {
                if (payload.ChangeTypes.HasType(TreeChangeTypes.Remove))
                {
                    // delete content entirely (with descendants)
                    //  false: remove entirely from all indexes
                    DeleteIndexForEntity(payload.Id, false);
                }

    The ChangeTypes enum is here;

    public enum TreeChangeTypes : byte
{
    None = 0,

    // all items have been refreshed
    RefreshAll = 1,

    // an item node has been refreshed
    // with only local impact
    RefreshNode = 2,

    // an item node has been refreshed
    // with branch impact
    RefreshBranch = 4,

    // an item node has been removed
    // never to return
    Remove = 8,
}

    So you should be able to tell the difference between an Unpublish and a Publish.

    regards

    Marc

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  • Jay 425 posts 652 karma points
    Dec 11, 2019 @ 12:19
    Jay
    0

    Thanks Marc

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