query irule priority numbers used in a virtual server

I am instrumenting our irules so that they can be tested, loading them onto a virtual server (which is created explicitly for unit testing) in order to run some traffic against them as part of the test suite.

 

 

The problem is that to create a test irule, I need to set an arbitrary priority number - otherwise I get an error .

 

01070621:3: Rule priorities for virtual server (xyz) must be unique."

 

 

i.e. if I create a test iRule, I need to make sure I am not re-using a priority number. Is there is way to query all the used priority numbers, so that I can just generate a new one?

 

 

If I do something like

 

(Get-F5.iControl).LocalLBRule.query_rule((Get-F5.iControl).LocalLBRule.get_list()[0])

 

 

I can get the name and definition of the iRule, but I cannot get the priority.

 

 

I could do other things like maintain the priority numbers used in the test run state or catch the error and generate a new number till it succeeds etc., but I was wondering if there is a cleaner way.

 

 

Thanks,

 

Sriram