I am working on improving the btests for the kafka writer plugin with the
goal of validating some logic in KafkaWriter::DoInit. The best approach
that I have so far is to write a BiF and use it in both DoInit and the
btest via Zeek policy, but I have only been able to find limited
documentation[1][2] on the topic.
I've looked around for examples of this approach without success, including
in the past few years of the Zeek-dev mailing list archives. I explicitly
want to stay away from the assumption that the Manager/Logger has a kafka
broker available to it at the time of testing.
My BiF is fairly simple:
```
function SelectTopicName%(override: string, default: string, fallback:
string%) : string
%{
// Things
%}
```
bifcl appears to be generating the following:
```
namespace BifFunc { namespace Kafka { extern Val*
bro_SelectTopicName(Frame* frame, val_list*); } }
```
At this point I'm just randomly poking around in Zeek/src trying to find my
way - any pointers regarding how to use this function in C++ (or another
approach altogether) would be appreciated. Thanks,
1: https://www.zeek.org/development/howtos/bif-doc/index.html#functions
2: https://www.zeek.org/development/howtos/bif-doc/example.html
Jon
--
Jon Zeolla
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