[Kamailio-Users] Dispatcher module question

[Robert McGilvray]

From: users-bounces at lists.kamailio.org
[mailto:users-bounces at lists.kamailio.org] On Behalf Of Robert McGilvray
Sent: Thursday, November 05, 2009 4:31 PM
To: Alex Balashov; DJB
Cc: users at lists.kamailio.org
Subject: Re: [Kamailio-Users] Dispatcher module question


From: users-bounces at lists.kamailio.org
[mailto:users-bounces at lists.kamailio.org] On Behalf Of Alex Balashov
Sent: Thursday, November 05, 2009 4:18 PM
To: DJB
Cc: users at lists.kamailio.org
Subject: Re: [Kamailio-Users] Dispatcher module question

DJB wrote:

> Is there a way that I can pass variable into ds_select_dst(set, alg)
on the 
> set parameter so I can query from database table for setid; for
instance, 
> ds_select_dst("avp(customer_setid)", "4"). I've tried, but it did not 
> work. Please advise.

A look in modules/dispatcher/dispatcher.c reveals that ds_*() 
functions do not parse pseudovariables, which is a problem with a lot 
of existing Kamailio code.  Any arguments you pass to it will be 
interpreted as literal strings.

In short, you can't do that.  You may wish to put in a feature request 
to update these functions to take pseudovariables.

-- 

I haven't looked at the code but I'm using the ds_select functions in
more or less the same way in kam 1.5. I pull the setid from a match in
the dialplan module instead of a db. 

if (ds_select_domain("$avp(s:dpattr)", "0")) {
	if ($avp(s:dispatcher-cnt) > 1) {
		# If there is more than one entry returned for the group
arm the failure route
		t_on_failure("ROUTE_DP_FAILURE");
	}

	route(ROUTE_RELAY);

} else {
	xlog("L_WARN", "KAM_HOST: ($ci) $pr $mi route[$rm][0] $fu -> $ru
- No dst gateways found\n");
	sl_send_reply("404", "No destination gateways found\n");
	exit;
}


OP - Did you try it? 

Bob

--

My bad, somehow I ignored the part of your email that stated you had
already tried it. The problem your having is most likely that you're
getting a string from your DB instead of an int. 

Here's a workaround I came up with, you may also be able to cast it in
your sql query.

$avp(s:dpattr) = $(avp(s:dpattr){s.int}); # dpattr returned from mysql
is a string. It needs to be an INT

Bob


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