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<p class="MsoNormal">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.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Another thought would be to use the core_hash() function over the call-id.
<a href="http://www.kamailio.org/docs/modules/5.6.x/modules/cfgutils.html#cfgutils.f.core_hash">
http://www.kamailio.org/docs/modules/5.6.x/modules/cfgutils.html#cfgutils.f.core_hash</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Ben Kaufman<o:p></o:p></b></p>
<p class="MsoNormal"><i>Sr. VoIP Engineer - BCM One<o:p></o:p></i></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">+1.612.735.9309<o:p></o:p></p>
<p class="MsoNormal"><a href="mailto:bkaufman@bcmone.com">bkaufman@bcmone.com</a><o:p></o:p></p>
<p class="MsoNormal">24 hour client support: +1.855.639.6300<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> sr-users <sr-users-bounces@lists.kamailio.org> <b>
On Behalf Of </b>Joel Serrano<br>
<b>Sent:</b> Tuesday, May 3, 2022 8:40 PM<br>
<b>To:</b> Henning Westerholt <hw@gilawa.com><br>
<b>Cc:</b> Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org><br>
<b>Subject:</b> Re: [SR-Users] Tips on picking random element from a list<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I did, but I don't see how to limit the range:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">From the docs: Returns a random value from the [0 - 2^31) range.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">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)? <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Tue, May 3, 2022 at 10:40 AM Henning Westerholt <<a href="mailto:hw@gilawa.com">hw@gilawa.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="DE">Hello,<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="DE"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">what about just using this PV:
<a href="https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkamailio.org%2Fdocs%2Fmodules%2F5.5.x%2Fmodules%2Fcfgutils.html%23idm438&data=05%7C01%7Cbkaufman%40bcmone.com%7Cde7dd7f8eb504d2a662f08da2d6f2f33%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C637872252819501517%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=JRp6T14RXqTW26xFJ5DWcKPUEqqXy0hkQ1ecuCWyk10%3D&reserved=0" target="_blank">
https://kamailio.org/docs/modules/5.5.x/modules/cfgutils.html#idm438</a></span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">Cheers,</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">Henning</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> </span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">--
</span><span lang="DE"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">Henning Westerholt –
</span><span lang="DE"><a href="https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fskalatan.de%2Fblog%2F&data=05%7C01%7Cbkaufman%40bcmone.com%7Cde7dd7f8eb504d2a662f08da2d6f2f33%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C637872252819501517%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=l0%2FQ%2ByWZlVi4ZI5mxOrwD7153fNcP0%2FNmXXrd0YLg4g%3D&reserved=0" target="_blank"><span lang="EN-GB" style="color:#0563C1">https://skalatan.de/blog/</span></a><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">Kamailio services –
</span><span lang="DE"><a href="https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgilawa.com%2F&data=05%7C01%7Cbkaufman%40bcmone.com%7Cde7dd7f8eb504d2a662f08da2d6f2f33%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C637872252819501517%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=mgnKGkPniboT1FOSW7rC84SWWhJrNer3GlvlzZ72%2FDI%3D&reserved=0" target="_blank"><span lang="EN-GB" style="color:#0563C1">https://gilawa.com</span></a><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> </span><span lang="DE"><o:p></o:p></span></p>
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<b><span lang="DE">From:</span></b><span lang="DE"> sr-users <<a href="mailto:sr-users-bounces@lists.kamailio.org" target="_blank">sr-users-bounces@lists.kamailio.org</a>>
<b>On Behalf Of </b>Joel Serrano<br>
<b>Sent:</b> Tuesday, May 3, 2022 6:20 PM<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <<a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a>><br>
<b>Subject:</b> [SR-Users] Tips on picking random element from a list<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">Hi Everyone, <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">I have to implement a flow where outbound calls get their caller-id set with a random number from a pool.<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">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).<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">My initial approach was:<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">1- Try to keep it simple, with no dependencies, and all done in the config script.<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">2- If #1 is "ugly", then I'd probably go with some inline code using python/lua/etc<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">3- If #2 is "ugly", then I'd go with having the info in a DB and just run a query<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">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!<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">Thanks!!<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="DE">Joel.<o:p></o:p></span></p>
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<span lang="DE"> <o:p></o:p></span></p>
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