restrictions in C-parsing of def.json

[Stefan Skoglund (lokal]

Hello.

I'm hitting an restriction with classes in def.json
(cfengine nova 3.7.3 so def.json is parsed in C) which makes me believe
that the set of usable guards is severily restricted.

Basically i believe that hard classes sourced from the environment is
unknown at parse time. Specifically i can't use this class as a guard:

---
cf-promises --show-classes|grep lokeldarn
lokeldarn_hobby_site_org source=agent,derived-from=sys.domain,hardclass
---

The solution i can see is parsing in my own code in the same way as
with the old lib/3.7/def.cf (or modify the MPF.)

[Ted Zlatanov]

On Mon, 13 Jun 2016 13:13:43 +0200 "Stefan Skoglund (lokal" "användare)" <stefan....@agj.net> wrote:

SS> I'm hitting an restriction with classes in def.json
SS> (cfengine nova 3.7.3 so def.json is parsed in C) which makes me believe
SS> that the set of usable guards is severily restricted.

SS> Basically i believe that hard classes sourced from the environment is
SS> unknown at parse time.

This was a bug, see https://tracker.mender.io/browse/CFE-2333

It's resolved in 3.9.0 and will be fixed in the next 3.7 and 3.8
releases. There's a workaround in
https://github.com/cfengine/masterfiles/pull/700 that's already been merged.

Ted