[OpenSIPS-Users] acc db_extra not allowing JSON variables

[Bogdan-Andrei Iancu]

Hi Brett,

So, some initial data:

The $json variables are (as scope) the same as $var - which means they 
have visibility only per process (as names they do exist in all procs, 
but they have different instances / values in each proc), but inside the 
process they are global - visible to all messages, from all routes which 
are executed in that particular process (!so take care that to reset the 
json before usage as you may inherit some value from a previous 
execution in the same proc).

Now, about your cases:

1) using a $json in extra_db - it is visibility issue - you set the json 
var for INVITE (in a process) and you try to read it for the BYE (in a 
different proc). Actually the error you get says that you try to read a 
$json which was never set.

2) using it from failure / onreply routes - same as above.


Which leaves us with 2 real bugs:

1) when merging 2 jsons - the bogus len - we will look into it

2) the errors on missing values or tags - I will change them to DBG and 
to actually return NULL value to script.

Thanks and regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 01/16/2013 05:50 PM, Brett Nemeroff wrote:
> Bogdan,
> I'm actually getting all sorts of weird errors with the JSON module..
> Using it in place, for simple things it works great.
>
> If I concatonate json variables and place them into an avp, I get junk 
> at the end
>
> $avp(result) = $json(somevar/string1) + $json(somevar/string2);
>
> $avp(result) will be something like "String1dataString2dataM\002"
>
> The M\002 is random.. Almost like a variable that isn't initialized.
>
> Also. $json variables don't survive to onreply routes or failure 
> routes. And they can't be used in db_extra. There also isn't a real 
> good way to reliably check for the existence of a json element without 
> throwing an error in the log
>
> Thanks for looking at this. If there is anything I can do to help, let 
> me know.
> -Brett
>
>
> On Wed, Jan 16, 2013 at 6:58 AM, Bogdan-Andrei Iancu 
> <bogdan at opensips.org <mailto:bogdan at opensips.org>> wrote:
>
>     Hi Brett,
>
>     Never tried something like that, but let me run some tests....
>
>     Regards,
>
>     Bogdan-Andrei Iancu
>     OpenSIPS Founder and Developer
>     http://www.opensips-solutions.com
>
>
>     On 01/15/2013 10:29 PM, Brett Nemeroff wrote:
>>     Anyone else run into this? Anyone using JSON??
>>
>>     Thanks,
>>     Brett
>>
>>
>>     On Thu, Jan 10, 2013 at 12:37 AM, Brett Nemeroff
>>     <brett at nemeroff.com <mailto:brett at nemeroff.com>> wrote:
>>
>>         To make this more interesting.. I actually don't get the
>>         $json variable in a failure route either. There definitely
>>         seems to be something up with this variable type's scope.
>>
>>         For now, I save the json into a dlg_val, and restore as
>>         needed. However, it'd be nice to let it persist. Is there a
>>         way to do that?
>>
>>         Thanks,
>>         Brett
>>
>>
>>         On Wed, Jan 9, 2013 at 12:20 PM, Brett Nemeroff
>>         <brett at nemeroff.com <mailto:brett at nemeroff.com>> wrote:
>>
>>             Hey All,
>>             I'm trying to add $json variables to db_extra. I'm 100%
>>             sure the variables are set as I'm using them all over my
>>             script. However, when acc wants to write, I get errors
>>             like this:
>>
>>
>>             Jan  9 18:10:52 development
>>             /usr/local/sbin/opensips[10469]: ERROR:json:pv_get_json:
>>             Variable named:cdata1 not found
>>
>>             Jan  9 18:10:52 development
>>             /usr/local/sbin/opensips[10469]: ERROR:acc:extra2strar:
>>             failed to get 'element'
>>
>>
>>             Like I said, I'm 100% sure the variable is
>>             set: $json(cdata1/element)
>>
>>             It's almost like it just doesn't support $json or that
>>             it's "out of scope"
>>
>>             Thanks!
>>             -Brett
>>
>>
>>
>>
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>
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