iRule URI Redirect for BIG-IP DNS.

Hello All,

We have a WIP ( abc.xyz.com) setup on the BIG-IP DNS with a two generic hosts as pool members in different DC's . We recently got a request asking if we could redirect certain API's ( URI's ) to  only particular DC. I know we can achieve this by using LTM's but in this case we are not load balancing to a LTM VIP's. I am assuming if we can write a iRule and attach it to a listener IP on the BIG-IP DNS that would redirect all the incoming request for abc.xyz.com/def only to a particular DC.  I am not an expert in the iRule so any help would greatly appreciated.