4 May
2022
4 May
'22
4:01 p.m.
If you were choosing random numbers from a pool of numbers, you could
always lets say store the caller-id's in redis, connect kamailio to
redis, and just use the RANDOMKEY function of redis to return a caller id.
Fred Posner | palner.com
o: +1 (212) 937-7844
On 5/4/22 15:43, Ben Kaufman wrote:
How “random” do you need to be here? Given your
example, a quick thought
would be to just iterate over a list, using a counter and calculating
the modulo (remainder) when dividing it by the number of elements you have.
Another thought would be to use the core_hash() function over the
call-id.
http://www.kamailio.org/docs/modules/5.6.x/modules/cfgutils.html#cfgutils.f…
<http://www.kamailio.org/docs/modules/5.6.x/modules/cfgutils.html#cfgutils.f.core_hash>
Of course, those aren’t really “random” in the mathematical sense, but
if you’re goal is “you have a pool of 10 numbers and want them to be
assigned to the p-asserted-identity URI user each one-tenth of the
time”, either of the above methods should work. Hashing the call-id
would even ensure that the same call will get the same value if you have
to recalculate it.
*Ben Kaufman*
/Sr. VoIP Engineer - BCM One/
+1.612.735.9309
bkaufman(a)bcmone.com <mailto:bkaufman@bcmone.com>
24 hour client support: +1.855.639.6300
*From:* sr-users <sr-users-bounces(a)lists.kamailio.org> *On Behalf Of
*Joel Serrano
*Sent:* Tuesday, May 3, 2022 8:40 PM
*To:* Henning Westerholt <hw(a)gilawa.com>
*Cc:* Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
*Subject:* Re: [SR-Users] Tips on picking random element from a list
I did, but I don't see how to limit the range:
From the docs: Returns a random value from the [0 - 2^31) range.
Is there a way to limit the range from 1-100 for example? Or maybe the
way is to use $RANDOM and just rely on the first/last 2 digits
(essentially a 00-99 range)?
On Tue, May 3, 2022 at 10:40 AM Henning Westerholt <hw(a)gilawa.com
<mailto:hw@gilawa.com>> wrote:
Hello,
what about just using this PV:
https://kamailio.org/docs/modules/5.5.x/modules/cfgutils.html#idm438
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Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
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*From:*sr-users <sr-users-bounces(a)lists.kamailio.org
<mailto:sr-users-bounces@lists.kamailio.org>> *On Behalf Of *Joel
Serrano
*Sent:* Tuesday, May 3, 2022 6:20 PM
*To:* Kamailio (SER) - Users Mailing List
<sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org>>
*Subject:* [SR-Users] Tips on picking random element from a list
Hi Everyone,
I have to implement a flow where outbound calls get their caller-id
set with a random number from a pool.
I've been looking around and, as most of the time, there are tons of
ways to implement something like this... This is a simple
implementation, the number pool is fixed and will not change (so I
could have it hard-coded in the config if required).
My initial approach was:
1- Try to keep it simple, with no dependencies, and all done in the
config script.
2- If #1 is "ugly", then I'd probably go with some inline code using
python/lua/etc
3- If #2 is "ugly", then I'd go with having the info in a DB and
just run a query
I think #2 and #3 might be overkill for something so "simple" but I
haven't had to work too much with randomness in Kamailio, so any
tips/suggestions on where to store the number list and how to pick
one randomly would be awesome!
Thanks!!
Joel.
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