feat: fire ApplicationBooted after all callbacks have completed

Author: imorland

framework/core/src/Foundation/Application.php

@@ -9,7 +9,9 @@
 
 namespace Flarum\Foundation;
 
+use Flarum\Foundation\Event\ApplicationBooted;
 use Illuminate\Contracts\Container\Container;
+use Illuminate\Contracts\Events\Dispatcher;
 use Illuminate\Events\EventServiceProvider;
 use Illuminate\Support\Arr;
 use Illuminate\Support\ServiceProvider;
@@ -276,6 +278,11 @@ public function boot()
         $this->booted = true;
 
         $this->fireAppCallbacks($this->bootedCallbacks);
+
+        // Finally, we will fire an event to indicate that the application has booted.
+        // We explicitly do this after firing the "booted" callbacks so that any listener that
+        // needs to do work after booting can use this event to know when it is truly done.
+        $this->container->make(Dispatcher::class)->dispatch(new ApplicationBooted());
     }
 
     /**

framework/core/src/Foundation/Event/ApplicationBooted.php

@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Foundation\Event;
+
+/**
+ * The "application booted" event is fired after the application has finished booting and all extension boot callbacks have been run, but before any requests have been handled.
+ */
+class ApplicationBooted
+{
+
+}