[ixpmanager] Strange BIRD log -> Filter (unnamed) did not return accept nor reject. Make up your mind

[Marinos Dimolianis]

Hi all,
Apparently the problem was the following.
We are using Birdseye to calculate the number of RPKI Valid, Invalid, Unknown prefixes and also for the IRRDB accepted or rejected.
 We noticed the following:
https://github.com/inex/birdseye/blob/master/app/Bird.php#L110
birdseye/app/Bird.php at master · inex/birdseye
github.com

In the case Birdseye counts prefixes using large communities it employs the following filter:
        $routesBlob = $this->run('show route all filter { if bgp_large_community ~ [( ' . ((int)$x) . ', ' . ((int)$y) . ', * )] then accept;} protocol ' . $protocol );
This filter is an unnamed filter that does not include an else condition for rejecting the prefixes if the condition is not matched.
We tested that in our case and it seems to work.
Best Regards,
Marinos

> On 7 Sep 2023, at 3:58 PM, Nick Hilliard (INEX) <nick at inex.ie> wrote:
> 
> Hi Marinos, 
> 
> Usually this is caused by an empty IRR query.  What is the output of the template? That might give some indication about what the root cause of the problem is.
> 
> Nick
> 
> Marinos Dimolianis via ixpmanager wrote on 07/09/2023 09:58:
>> Hello,
>> We are facing a strange log at our RS “Filter (unnamed) did not return accept nor reject. Make up your mind”.
>> Do you have any ideas?
>> We are using the template that is provided by IXPManager (slightly changed but keeping the same logic).
>> Kind Regards,
>> Marinos
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