redirect part of the traffic

Hmm. This is sort of working, but maybe one of the gurus can explain an odd bit of behavior I'm seeing.

 
  when HTTP_REQUEST { 
  
 log local0. "rule starting, count is: [STATS::get counter "counter"] " 
  
 if {[STATS::get counter "counter"] == 40} { 
  reset the clock 
 STATS::set counter "counter" 0 
 log local0. "Clock was reset to 0." 
 } 
  
 if {[STATS::get counter "counter"] == 33} { 
  
 HTTP::redirect http://www.google.com 
 log local0. "redirect issued!" 
  
 } 
  
 STATS::incr counter "counter" 
 log local0. "Incremented the current count to: [STATS::get counter "counter"]" 
 } 
 

I have a stats profile called "counter" with a single field in it, also called "counter". What I see in the logs sort of indicates that the number isn't being incremented correctly - a CMP issue, perhaps?

 
 Nov 12 14:55:35 v10bigip tmm tmm[5000]: Rule redirect_some_percent : Incremented the current count to: 1 
 Nov 12 14:55:39 v10bigip tmm1 tmm1[5001]: Rule redirect_some_percent : rule starting, count is: 40 
 Nov 12 14:55:39 v10bigip tmm1 tmm1[5001]: Rule redirect_some_percent : Clock was reset to 0. 
 Nov 12 14:55:39 v10bigip tmm1 tmm1[5001]: Rule redirect_some_percent : Incremented the current count to: 1 
 Nov 12 14:55:47 v10bigip tmm tmm[5000]: Rule redirect_some_percent : rule starting, count is: 1 
 Nov 12 14:55:47 v10bigip tmm tmm[5000]: Rule redirect_some_percent : Incremented the current count to: 2 
 Nov 12 14:55:50 v10bigip tmm1 tmm1[5001]: Rule redirect_some_percent : rule starting, count is: 1 
 Nov 12 14:55:50 v10bigip tmm1 tmm1[5001]: Rule redirect_some_percent : Incremented the current count to: 2 
 

At 33, the request to google was issued as expected.

Notice that it stayed 1 for 2 iterations there. In the final rule, we'd want to basically roll through a 0-99 count, then issue the redirect 3 times, at 33, 66 and 99 for example. This is sort of a quick proof of concept, but it's pretty close. It's possible that it could be tightened up considerably, speed- and efficiency-wise.

JQ