[OpenSIPS-Users] Event-RabbitMQ (and Event in general): pvar for event names

[Răzvan Crainea]

Hi, Bobby!

I'm glad you're interested in enhancing OpenSIPS with extra features for 
the Event Interface, and I am eager to help you with this.
The pvar interface in OpenSIPS is quite simple. Each variable consists 
of a spec and a value, which can be string or integer. Reading or 
writing a variable can be easily done using the generic pseudo-variable 
interface. I think the best way to start this is to watch the devel 
tutorial we prepared for the PVAR interface[1].

[1] http://www.opensips.org/Documentation/Tutorials-DevelSession04

PS: probably this discussion should be continued on the devel list.

Best regards,

Razvan Crainea
OpenSIPS Core Developer
http://www.opensips-solutions.com

On 05/24/2013 08:21 AM, Bobby Smith wrote:
> Greetings list,
> I'd like to be able to use a pvar in the subscribe function for the
> event interface like so:
> subscribe("$avp(event_name)", "$avp(rabbit_url)")
> Where event_name would be like E_CUSTOM_SUBSCRIBE and url would be
> "rabbitmq:localhost/$fU"
> I know this is not supported yet and I'd be interested in implementing
> it, but understanding how pvars work is kinda tough without
> documentation.  Also, it seems like you have to have a sip_msg in
> context for the function to translate a pvar into it's data type, but in
> the event interface it's not passed in.
> Any thoughts?  I'd prefer not to use an infinite case statement: my use
> case is having a 1.9.x route block with param() calls that pass in the
> event name and the pvar for the queue name to subscribe to.
>
> Thanks list!
>
>
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