Re: [SR-Users] Tips on picking random element from a list

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. https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.k amailio.org%2Fdocs%2Fmodules%2F5.6.x%2Fmodules%2Fcfgutils.html%23cfgut ils.f.core_hash&amp;data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f6470 7428040a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C637 872913679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2 luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=zdoWq%2 FANIgusBipnbAD4%2BJpDzMc6fNrilEawt5rV2f8%3D&amp;reserved=0 <https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww. kamailio.org%2Fdocs%2Fmodules%2F5.6.x%2Fmodules%2Fcfgutils.html%23cfgu tils.f.core_hash&amp;data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f647 07428040a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C63 7872913679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV 2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=zdoWq% 2FANIgusBipnbAD4%2BJpDzMc6fNrilEawt5rV2f8%3D&amp;reserved=0> 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 &lt;sr-users-bounces(a)lists.kamailio.org&gt; *On Behalf Of *Joel Serrano *Sent:* Tuesday, May 3, 2022 8:40 PM *To:* Henning Westerholt &lt;hw(a)gilawa.com&gt; *Cc:* Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org&gt; *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 &lt;hw(a)gilawa.com <mailto:hw@gilawa.com>> wrote: Hello, what about just using this PV: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkamailio.… <https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkam ailio.org%2Fdocs%2Fmodules%2F5.5.x%2Fmodules%2Fcfgutils.html%23idm438& amp;data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f64707428040a008da2e0 90ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C637872913679726971% 7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik 1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=qW9OEMTf1MeQl%2FRKqRLah 4WLQAogKViHQeS%2FRZTqgN0%3D&amp;reserved=0> Cheers, Henning -- Henning Westerholt - https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fskalatan.… <https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fska latan.de%2Fblog%2F&amp;data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f6 4707428040a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C 637872913679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjo iV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=xLGo PpD2479CdKjMhiWY67lLq4c8TqmyurLTepGqQTo%3D&amp;reserved=0> Kamailio services - https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgilawa.co… <https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgil awa.com%2F&amp;data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f647074280 40a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C63787291 3679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzI iLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=W7RpDwuZE%2B L%2BkFtj98XacFKD6JcnukPdg36I0JyD%2Fv8%3D&amp;reserved=0> *From:*sr-users &lt;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 &lt;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. __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist s.kamailio.org%2Fcgi-bin%2Fmailman%2Flistinfo%2Fsr-users&amp;data=05%7 C01%7Cbkaufman%40bcmone.com%7C233860f64707428040a008da2e090ef7%7Cafc18 18e7b6848568913201b9396c4fc%7C1%7C0%7C637872913679726971%7CUnknown%7CT WFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI 6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=SxRAZ8yS3dvYYor2Iw8HgG39mvXsn4DP2dSH VjM5UO0%3D&amp;reserved=0