How to call phantomjs directly from nginx?

Question

Nginx

Hello everyone,
I need advice, is it possible and how to configure nginx to solve such a problem -
for each request like www.domain.ru/path/?pdf=12345.pdf, call phantomjs with parameters -

phantomjs /opt/www/modules/pdf/rasterize.js 
'http://www.domain.ru/path/?pdf=12345.pdf' /opt/www/files/12345.pdf A4

In other words, he is

1. "catches" all URLs with the pdf=... parameter.
   
2. calls phantomjs
   
3. the name of the output PDF file is taken from the pdf=... parameter.
   
4. after that makes a redirect to www.domain.ru/files/12345.pdf
   

Can this be done at the nginx settings level and how?
Thank you!

Answer 1

Choose pearl or lua - and go ahead, any magic you want and everything is inside nginx.

Answer 2

You can proxy the call to a php script that will launch the phantom via exec, and then transfer the return back to nginx via x-accel-redirect. If we also add a proxy cache so that PHP is called only once, then we get a completely viable solution.