Symfony içinde monolog servisine ulaşıp logları tutmak

"require": {
    "symfony/monolog-bundle": "~2.4"
}

composer update symfony/monolog-bundle

monolog:
    channels: ["student", "subject"]
    handlers:
        student:
            type: stream
            path:  %kernel.logs_dir%/%kernel.environment%_student.log     # Creates dev_student.log file
            channels: ["student"]     # Force to handle only student channel
        subject:
            type: stream
            path:  %kernel.logs_dir%/%kernel.environment%_subject.log     # Creates dev_subject.log file
            channels: ["subject"]     # Force to handle only subject channel
        main:
            channels: ["!student", "!subject"]     # Force main channel to ignore student and subject channels
        console:
            channels: ["!doctrine", "!student", "!country"]     # Force console channel to ignore student and subject channels as well

Class StudentController extends Controller
{
    public function indexAction()
    {
        $this->get('monolog.logger.student')->info('inanzzz info message');
    }
}

# app/logs/dev_student.log
[2014-06-07 21:13:18] student.INFO: inanzzz info message [] []

Class StudentController extends Controller
{
    public function indexAction()
    {
        $this->get('monolog.logger.subject')->warning('inanzzz warning message');
    }
}

# app/logs/dev_subject.log
[2014-06-07 21:13:18] subject.WARNING: inanzzz warning message [] []