UmbracoApplicationStartedNotification is not published asynchronously during start

[iliyan-kulishev]

Which Umbraco version are you using? (Please write the exact version, example: 10.1.0)

12.0.1

Bug summary

The notification is published async only during restart.

Specifics

Published async during restart:

Published sync during start:

Steps to reproduce

• Have an handler that implements INotificationAsyncHandler<UmbracoApplicationStartedNotification>
• Set a breakpoint in the body of the HandleAsync method

Expected result / actual result

Execution never hits the breakpoint.

[github-actions]

Hi there @iliyan-kulishev!

Firstly, a big thank you for raising this issue. Every piece of feedback we receive helps us to make Umbraco better.

We really appreciate your patience while we wait for our team to have a look at this but we wanted to let you know that we see this and share with you the plan for what comes next.

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[Zeegaan]

I cannot reproduce this sorry, It hits the HandleAsync breakpoint just fine, I've tried this on both 12.0.1 and latest 🙈
Here is my composer:

[kjac]

I am also having a hard time reproducing this on V13.5.2.

Given this code:

using Umbraco.Cms.Core.Composing;
using Umbraco.Cms.Core.Events;
using Umbraco.Cms.Core.Notifications;

namespace My.Site;

public class MyNotificationHandler :
    INotificationAsyncHandler<UmbracoApplicationStartingNotification>,
    INotificationAsyncHandler<UmbracoApplicationStartedNotification>
{
    public Task HandleAsync(UmbracoApplicationStartingNotification notification, CancellationToken cancellationToken)
    {
        Console.WriteLine("#### APPLICATION STARTING ####");
        return Task.CompletedTask;
    }

    public Task HandleAsync(UmbracoApplicationStartedNotification notification, CancellationToken cancellationToken)
    {
        Console.WriteLine("#### APPLICATION STARTED ####");
        return Task.CompletedTask;
    }
}

public class MyNotificationHandlerComposer : IComposer
{
    public void Compose(IUmbracoBuilder builder)
        => builder
            .AddNotificationAsyncHandler<UmbracoApplicationStartingNotification, MyNotificationHandler>()
            .AddNotificationAsyncHandler<UmbracoApplicationStartedNotification, MyNotificationHandler>();
}

The expected console logging happens:

I'll go ahead and close this one 👍