'Database has gone away' crashes cron and leaves cron.lock file about cron HOT 6 CLOSED

App::error(function(Exception $exception, $code)
{

    //Remove `cron.lock` file after exception.
    $storagePath = "";
    // Fallback function for Laravel3 with helper function path('storage')
    if (function_exists('storage_path')) {
        $storagePath = storage_path();
    } else if (function_exists('path')) {
        $storagePath = path('storage');
    }

    if (!empty($storagePath)) {

        $lockFile = $storagePath . DIRECTORY_SEPARATOR . 'cron.lock';

        if (file_exists($lockFile)) {
            unlink($lockFile);
            Logger::warning('Deleted `cron.lock` file after exception.');
        }
    }

    Log::error($exception);
});