pixelfed/app/Jobs/MovePipeline/CleanupLegacyAccountMovePipeline.php

<?php

namespace App\Jobs\MovePipeline;

use App\Follower;
use App\Util\ActivityPub\Helpers;
use Exception;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Queue\Queueable;
use Illuminate\Queue\Middleware\WithoutOverlapping;
use DateTime;

class CleanupLegacyAccountMovePipeline implements ShouldQueue
{
    use Queueable;

    public $target;

    public $activity;

    /**
     * The number of times the job may be attempted.
     *
     * @var int
     */
    public $tries = 6;

    /**
     * The maximum number of unhandled exceptions to allow before failing.
     *
     * @var int
     */
    public $maxExceptions = 3;

    /**
     * Create a new job instance.
     */
    public function __construct($target, $activity)
    {
        $this->target = $target;
        $this->activity = $activity;
    }

    /**
     * Get the middleware the job should pass through.
     *
     * @return array<int, object>
     */
    public function middleware(): array
    {
        return [
            new WithoutOverlapping('process-move-cleanup-legacy-followers:'.$this->target),
            (new ThrottlesExceptions(2, 5 * 60))->backoff(5),
        ];
    }

    /**
     * Determine the time at which the job should timeout.
     */
    public function retryUntil(): DateTime
    {
        return now()->addMinutes(15);
    }

    /**
     * Execute the job.
     */
    public function handle(): void
    {
        if (config('app.env') !== 'production' || (bool) config_cache('federation.activitypub.enabled') == false) {
            throw new Exception('Activitypub not enabled');
        }

        $target = $this->target;
        $actor = $this->activity;

        $targetAccount = Helpers::profileFetch($target);
        $actorAccount = Helpers::profileFetch($actor);

        if (! $targetAccount || ! $actorAccount) {
            throw new Exception('Invalid move accounts');
        }

        Follower::whereFollowingId($actorAccount['id'])->delete();
    }
}