[sr-dev] some missing kemi module functions

[Daniel-Constantin Mierla]

Hello,
in short, all functions exported to native kamailio.cfg will be exported to
KEMI if they don't have an (native) alternative in those scripting
languages. If some are missing, that's because nobody did it so far for
specific modules and maybe I missed some functions for modules that already
have some exports to KEMI.

Those from sdpops likely I missed them, I will export them. Then I am not
sure why sipt was skipped, should be exported as well -- if nobody does it,
I will do it sometime soon. For call_obj I already saw commits pushed to
master. Variants of xlog functions could be missing, because was one of the
first modules exported to KEMI, but with the commonly used (at least by me)
functions, needed for testing, then probably I didn't approach again the
module.

Regarding the header operations, the remove, insert and append are exported
via KSR.hdr submodule, not KSR.textops. It was how Lua had it in the
previous version and when I started with KEMI, I worked on old lua module
code. Maybe confusing a bit, anyhow the docs are at:
  *
https://kamailio.org/docs/tutorials/devel/kamailio-kemi-framework/core/#ksrhdr-submodule

Cheers,
Daniel

On Thu, Jun 27, 2019 at 12:07 PM David Escartin <descartin at sonoc.io> wrote:

> hello all
>
> we are trying to rewrite our code to lua kemi, and we have found some
> issues/questions until we would like to share with you.
>
> -module call_obj not exported, we have tested a patch for the module to
> export the functions to kemi, which seems works fine
>
> -KSR.xlog.xinfo seems not able to select a facility as we currently can
> like xlog("LOG_LOCAL7", "L_NOTICE", "$var(xxxx)");
>
> -module sipt not exported yet, must use ksr.x.modf ? will be exported for
> a future version?
>
> -on 5.3.0-dev5 we don't see the KSR.dialog.var_sets() and
> KSR.dialog.var_get/e/w() functions in the code, so we do use KSR.pv
> functions to set and retrieve those dialog vars. However i see them on
> master branch. Which kamailio release would have them?
>
> -sdpops function sdp_with_codecs_by_name seems to not me exported, is it
> on a todo list?
>
> -textops module, missing remove_hf and append_hf functions exported. We
> already did a patch for the remove_hf, despite we could work with textopsx
> remove_hf_value function to get the almost the same functionality.
> However, with append_hf i'm having some more issues.
> We cannot use modf to exec those funtions, we get something like
> For ---> KSR.x.modf("append_hf", "User-Agent: test", "To");
> I get something like ----> Jun 27 07:19:16 proxy-1
> /usr/local/kamailio/sbin/kamailio[5525]: ERROR: app_lua [app_lua_sr.c:188]:
> lua_sr_modf(): function 'append_hf' has fixup - cannot be used
>
> I could append a new header and not only at the end of the message by
> replacing a header called the same way, by doing something like
> KSR.textopsx.insert_hf_value("header", "value");
> KSR.textopsx.remove_hf_value("header[-1]");
>
> but i'm not able to insert a header after another different one like we
> can do with append_hf("header:value", "To") for instance.
> Is it expected to have it on a next commit those append_hf and remove_hf
> exported.
>
> Would we do a pull request with the ki_remove_hf we already have and the
> call_obj functions too? We can check to export append_hf too if it's not
> planned to be done
>
> thanks a lot and regards
> david
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
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