protected function execute(InputInterface $input, OutputInterface $output)
    {
        $logger = $this->getContainer()->get('ringo_php_redmon.instance_logger');
        $manager = $this->getContainer()->get('ringo_php_redmon.instance_manager');
        $instances = $manager->findAll();
        
        if(is_array($instances)) {
            foreach($instances as $instance) {
                $logger
                    ->setInstance($instance)
                    ->execute();
            }
        }
    }