APM W3C Local Logging iRule

Here is what I ended with. The sessiondump was a big help. Thank you sir!

ltm rule APM_LOCAL_LOGGING {
    version 1.0 - edits by TJ Vreugdenhil - added APM variables
This iRule should be applied to VIP's associated with APM's. If you would like to find more APM
variables to log, use the 'sessiondump ' after a user is logged in to see the list 
possible variables to log agaisnt. 
when HTTP_REQUEST {
   
    Save Request Side Information
   
   set http_request "\"[HTTP::method] [HTTP::uri] HTTP/[HTTP::version]\""
   set http_request_time [clock clicks -milliseconds]
   set http_user_agent "\"[HTTP::header User-Agent]]\""
   set http_host [HTTP::host]
   set client_ip [IP::remote_addr]
   set client_port [TCP::remote_port]
   set http_request_uri [HTTP::uri]
   set referer [HTTP::header value referer]
}

when HTTP_RESPONSE {
   set apmprofile [ACCESS::session data get "session.access.profile"] 
   set sessionid [ACCESS::session data get "session.user.sessionid"] 
   set userid [ACCESS::session data get "session.logon.last.logonname"] 
   set userip [ACCESS::session data get "session.user.clientip"]   
   set response_time [expr [clock clicks -milliseconds] - $http_request_time]
   set virtual [virtual]
   set content_length 0
   if { [HTTP::header exists "Content-Length"] } {
      set content_length [HTTP::header "Content-Length"]
   }
   set lb_server "[LB::server addr]:[LB::server port]"
   if { [string compare "$lb_server" ""] == 0 } {
      set lb_server ""
   }
   set status_code [HTTP::status]
   set content_type [HTTP::header "Content-type"]
   set log_msg ""
   append log_msg "sessionid=$sessionid "
   append log_msg "apmprofile=$apmprofile "   
   append log_msg "virtual=$virtual "
   append log_msg "userid=$userid " 
   append log_msg "userip=$userip "   
   append log_msg "client_ip=$client_ip "
   append log_msg "client_port=$client_port "
   append log_msg "lb_server=$lb_server "
   append log_msg "host=$http_host "
   append log_msg "$http_request_uri "
   append log_msg "request=$http_request "
   append log_msg "server_status=$status_code "
   append log_msg "content_type=$content_type "
   append log_msg "content_length=$content_length "
   append log_msg "resp_time=$response_time "
   append log_msg "user_agent=$http_user_agent "
   append log_msg "referer=$referer"
   log  local0. $log_msg
   log local0. $log_msg
}
}

Here is the log message:

`Mar  6 10:33:01 OR0506DA05 info tmm[12688]: Rule /Common/APM_LOCAL_LOGGING : sessionid=9ce2d922 apmprofile=/Common/RDP-NO-AUTH-TEST virtual=/Common/F5VIPSPORTAL userid=TJ userip=10.26.243.127 client_ip=10.26.243.127 client_port=18935 lb_server=127.1.1.2:8080 host=172.26.4.57 request="GET /vdesk/resource_info.xml HTTP/1.1" server_status=200 content_length=1666 resp_time=2 user_agent="Mozilla/5.0 (Windows NT 6.1; rv:27.0) Gecko/20100101 Firefox/27.0]" referer=https://172.26.1.1/vdesk/webtop.eui?webtop=/Common/RDP&webtop_type=webtop_full`