Need to rewite specific uri's and then send to a specific pool.

I am brand new to Irules and need help performing the following:

 

 

Example of Apache conf file on web1 servers today:

 

 

ProxyPass /index.php http://web2.domain.com/sp/index.php

 

ProxyPass /sp_archive/ http://web2.domain.com/sp/sp_archive/

 

(there are at least 15 additional ones too.

 

 

What I would like to do is:

 

 

If I see

 

/index.php or

 

/sp_archive/ or etc....

 

rewrite it to prepend "/sp" to the uri

 

and then send it to the web2 pool

 

 

 

Could someone please help me with the proper syntax to write this?

 

 

Thanks in Advance!