F5 BIG-IP Irule - redirect to individual node for external monitoring

ok, im getting there towards answering my own question.

any refinements on this would be appreciated:

when HTTP_REQUEST { 
 Check if path contains /monitoring 
    if {[HTTP::path] contains "/monitoring/"}{ 

 use getfield to split the uri based on monitoring/ and then return the server name after that
    set server_id [getfield [HTTP::uri] "monitoring/" 2 ]
   log local0. "Server id: $server_id"

 Replace /monitoring and servername in the path 
    set toremove [string range [HTTP::uri] [expr {[string first "/monitoring/" [HTTP::uri]]}] end] 
    log local0. "part of uri to remove: $toremove"
    set replace "/"
    set uri [string map [list $toremove $replace] [HTTP::uri]]
    log local0. "New URI = $uri"
    HTTP::uri $uri

redirect or rewrite uri?
  HTTP::redirect "http://[HTTP::host]$uri"

    pool "/Common/${server_id}"
    } 
}