How to get notified when Laravel Horizon stops running

Kernel.php

<?php

namespace App\Console;

use Illuminate\Console\Scheduling\Schedule;
use Illuminate\Foundation\Console\Kernel as ConsoleKernel;
use Laravel\Horizon\Contracts\MasterSupervisorRepository;

// https://smknstd.medium.com/how-to-get-notified-when-laravel-horizon-stops-running-a17206e0adb6
class Kernel extends ConsoleKernel
{
    protected function isHorizonActive() : bool
    {
        if (! $masters = app(MasterSupervisorRepository::class)->all()) {
            return false;
        }

        return collect($masters)->some(function ($master) {
            return $master->status !== 'paused';
        });
    }

    protected function schedule(Schedule $schedule)
    {
        $schedule
            ->call(function () {
                if (!$this->isHorizonActive()) {
                    // notify your team, dont use any queued job here
                }
            })
            ->everyFiveMinutes();
    }
}

Reserved