Url_helpers in /lib

Hi, I’m trying to generate some static feeds using a script in /lib that
I
will later call from a sidekiq worker and I need to access the URL
helpers
from my library, how can I do it?
What I tried so far is including Rails.application.routes.url_helpers in
my
class but it doesn’t seem to work. I’ve also tried to follow this blog
post
http://hawkins.io/2012/03/generating_urls_whenever_and_wherever_you_want/
but still no success.

Does someone know how to use url helpers inside a lib?

ngw