Symfony2: Using kernel events like preExecute to log requests

A couple of days ago, one of our developers mentioned wanting to log all the requests that hit a specific Symfony2 controller. Back in Symfony 1.2, you’d be able to easily accomplish this with a “preExecute” function in the specific controller that you want to log. We’d actually set something similar to this up and the code would end up looking like:

Symfony2 doesn’t have a “preExecute” hook in the same fashion as 1.2 but using the event system you can accomplish the same thing. What you’ll basically end up doing is configuring an event listener for the “kernel.controller” event, inject the EntityManager (or kernel) and then log the request.

The pertinent service configuration in YAML looks like:

And then the corresponding class looks something like:

And thats about it.