Re: [SR-Users] xavp questions (variables in root/branch)

Hello, the xavps were developed in this way so far, if anyone would need to evaluate variables in the name has to write some C code in PV module where the xavps are exported as config variables. As I didn't have any need, I haven't spent any time on this. I think that there are some functions that may allow achieving what you aim for, but probably the complexity added in the config makes it not very attractive. In the pv module there are couple of functions that you can combine to set the value of xavps and evaluate, respectively: http://www.kamailio.org/docs/modules/5.1.x/modules/pv.html#pv.f.xavp_params… http://www.kamailio.org/docs/modules/5.1.x/modules/pv.html#pv.f.pv_evalx So you would have to build first a param like string, that you convert to xavp and then use evalx when you need the value. Like: $var(root) = 'x'; $var(branch) = 'y'; $var(value)= 'abc'; $var(params) = "$var(branch)=" + $var(value); xavp_params_explode("$var(params)", '$var(root)'); # now $xavp(x=>y) == "abc" To get the value inside $var(result): pv_evalx("$$xavp($var(root)=>$var(branch))", "$var(result)"); If you work with integer values, you may need to cast to int via transformation {s.int} Another option is to use embedded languages, such as lua, javascript, ... . There are functions that execute snippets of scripts after evaluating the variables, should be like: lua_dostring( 'KSR.pv.sets("$$xavp($var(root)=>$var(branch))", "$var(value)")' ); lua_dostring( 'KSR.pv.sets("$var(result)", KSR.pv.get("$$xavp($var(root)=>$var(branch))") )' ); Anyhow, supporting dynamic names could be added, it is not a limitation on xavp design, but how pv module exports to config -- eventually with some marker to show that a dynamic name should be evaluated in order to preserve performances of existing implementation (e.g., used of $xavpx as pv class name). Cheers, Daniel On 24.07.17 08:47, Vasiliy Ganchev wrote: -- Daniel-Constantin Mierla www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio Advanced Training - www.asipto.com Kamailio World Conference - www.kamailioworld.com