# Debugging

## Profiler

It may be useful to see what messages were sent during a http request. 
The bundle provides a collector for Symfony [profiler](http://symfony.com/doc/current/profiler.html).
The extension collects all sent messages

To enable profiler

```yaml
# app/config/config_dev.yml

enqueue:
    client:
        traceable_producer: true
```

Now suppose you have this code in an action:

```php
<?php

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use Enqueue\Client\Message;
use Enqueue\Client\ProducerInterface;

class DefaultController extends Controller 
    /**
     * @Route("/", name="homepage")
     */
    public function indexAction(Request $request)
    {
        /** @var ProducerInterface $producer */
        $producer = $this->get('enqueue.producer'); 
        
        $producer->sendEvent('foo_topic', 'Hello world');
        
        $producer->sendEvent('bar_topic', ['bar' => 'val']);

        $message = new Message();
        $message->setBody('baz');
        $producer->sendEvent('baz_topic', $message);

        // ...
    }

```

For this action you may see something like this in the profiler:
 
 ![Symfony profiler](../images/symfony_profiler.png)
 
## Queues and topics available 

There are two console commands `./bin/console enqueue:queues` and `./bin/console enqueue:topics`.
They are here to help you to learn more about existing topics and queues.

Here's the result:

![Cli debug commands](../images/cli_debug_commands.png)

## Consume command verbosity 

By default the commands `enqueu:conume` or `enqueue:transport:consume` does not output anything. 
You can add `-vvv` to see more information.
 
![Consume command verbosity](../images/consume_command_verbosity.png)

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