[SR-Users] Accessing #!define "variables" from within lua

[Daniel-Constantin Mierla]

Hello,

On 3/23/12 2:00 PM, Asgaroth wrote:
> I'll check this option out, thanks for the tip Alex.
it is a good way to do, $sel(...) are available in Lua, @... format not, 
but they are the same, just different access mechanism.

>
> I guess the other option too, which I have not tried, is to possibly 
> pass in the values as lua script parameters.

Yes, you can do that. You may need to use 'subst' instead of 'define' in 
order to be able to replace the token inside another string.

Exporting defines to Lua could be a good enhancement anyhow, I will 
think about and maybe add it in the near future.

Cheers,
Daniel

>
> On 23/03/12 12:12, Alex Balashov wrote:
>> Have you considered using selectors/cfg_get variables instead?
>>
>> They are also a common way to store various types of "global" 
>> values/constants, with the difference that they can be accessed at 
>> run time using PV container functions instead of set at preprocessing.
>>
>> myproject.local_ip = "1.2.3.4" descr "IP address"
>>
>> $sel(cfg_get.my project.local_ip)
>> Or SER-style: @cfg_get.my project.local_ip
>>
>> You can evaluate those in Lua, right?
>>
>> -- 
>> Alex Balashov - Principal
>> Evariste Systems LLC
>> 235 E Ponce de Leon Ave
>> Suite 106
>> Atlanta, GA 30030
>> Tel: +1-678-954-0671
>> Web: http://www.evaristesys.com/, http://www.alexbalashov.com
>>
>> Asgaroth<00asgaroth00 at gmail.com>  wrote:
>>
>>> Hi All,
>>>
>>> I am looking at writing a lua function that would really benefit from
>>> accessing "variables" that I would have defined by using the #!define
>>> statement. Is this at all possible? I've tried looking at the
>>> documentation surrounding lua and kamailio, but I cannot see how I 
>>> would
>>> access it. I thought I'd ask the list to see if anyone else may have
>>> attempted this.
>>>
>>> for example, I may have
>>>
>>> #!define INTERNAL_ADDRESS 1.2.3.4
>>>
>>> Which I subsequently use through the the routing script to refer to the
>>> internal address I am listening on. Now I would like to try and access
>>> this "variable" from a lua script. Any pointers/tips/workarounds would
>>> be greatly appreciated.
>>>
>>> Thanks
>>>
>>> _______________________________________________
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>
>
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-- 
Daniel-Constantin Mierla
Kamailio Advanced Training, April 23-26, 2012, Berlin, Germany
http://www.asipto.com/index.php/kamailio-advanced-training/