Heatmap iRule Errors

Hi Chris,

You're trying to increment the states subtable on every request regardless of whether you've done a lookup of the client IP and saved the output to $loc. You can avoid the issue by moving the table incr command into the same else clause as the whereis command.

To build two separate heatmaps, you could use a token to differentiate between them. Here's an untested suggestion to start with:

when HTTP_REQUEST {
   if { [HTTP::header exists "True-Client-IP"] }{
      set user_ip [HTTP::header True-Client-IP]
      set token "header"
   } else {
      set user_ip [IP::client_addr]
      set token "clientip"
   }
   if {[HTTP::uri] starts_with "/heatmap_$token" and [matchclass $user_ip equals whitelist]} {
      set chld ""
      set chd ""
      foreach state [table keys -subtable states_$token] {
         append chld $state
         append chd "[table lookup -subtable states_$token $state],"
      }
      set chd [string trimright $chd ","]
      HTML REMOVED SO DC DOESN'T PUT UP PIC
      log local0. "heatmap accessed by $user_ip"
   } elseif {[HTTP::uri] starts_with "/resetmap_$token" and [matchclass $user_ip equals whitelist]} {
      foreach state [table keys -subtable states_$token] {
         table delete -subtable states $state_$token
      }
      log local0. "heatmap reset by $user_ip"
   } else {
      set loc [whereis $user_ip abbrev]
      log local0. "location is $loc"
   }
   if {[table incr -subtable states_$token -mustexist $loc] eq ""} {
      table set -subtable states_$token $loc 1 indefinite indefinite
   }
}

Note that if you leave the $:: prefix on class names, the iRule will be demoted from CMP use.

Aaron