3 May
2022
3 May
'22
7:19 p.m.
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.
3 May
3 May
8:40 p.m.
Hello,
what about just using this PV:
https://kamailio.org/docs/modules/5.5.x/modules/cfgutils.html#idm438
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>
From: sr-users <sr-users-bounces(a)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>
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.
4 May
4 May
4:40 a.m.
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> wrote:
Hello,
what about just using this PV:
https://kamailio.org/docs/modules/5.5.x/modules/cfgutils.html#idm438
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com
*From:* sr-users <sr-users-bounces(a)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>
*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.
9:06 a.m.
http://www.kamailio.org/wiki/cookbooks/5.5.x/core#arithmetic_operations
$RANDOM mod 100
Should give you random ints between 0 and 99.
On Wed, May 4, 2022, 03:41 Joel Serrano <joel(a)textplus.com> wrote:
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> wrote:
Hello,
what about just using this PV:
https://kamailio.org/docs/modules/5.5.x/modules/cfgutils.html#idm438
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com
*From:* sr-users <sr-users-bounces(a)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>
*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://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
10:43 p.m.
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…
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@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@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<htt…
Cheers,
Henning
--
Henning Westerholt -
https://skalatan.de/blog/<https://nam11.safelinks.protection.outlook.com…
Kamailio services -
https://gilawa.com<https://nam11.safelinks.protection.outlook.com/?url=h…
From: sr-users
<sr-users-bounces@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@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.
11:01 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
<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>
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
<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>
Kamailio services – https://gilawa.com
<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>
*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.
__________________________________________________________
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://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
5 May
5 May
2:03 a.m.
Without any external dependencies. Not sure how you're populating your pool of
numbers for the caller id, but this generally works:
```
## Populate your list however you want:
$(avp(cid)) = "15555551000";
$(avp(cid)) = "15555551001";
$(avp(cid)) = "15555551002";
$(avp(cid)) = "15555551003";
$(avp(cid)) = "15555551004";
$(avp(cid)) = "15555551005";
$(avp(cid)) = "15555551006";
## $avp(cid) now holds 7 values.
## A random integer using the remainder $RANDOM divided by the number of
## elements:
$var(rand) = $RANDOM mod $cnt($avp(cid));
## Use the random integer to get the CID out of the list
$var(rand_cid) = $(avp(cid)[$var(rand)]);
```
Ben Kaufman
Sr. VoIP Engineer - BCM One
+1.612.735.9309
bkaufman(a)bcmone.com
24 hour client support: +1.855.639.6300
-----Original Message-----
From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of Fred Posner
Sent: Wednesday, May 4, 2022 3:02 PM
To: sr-users(a)lists.kamailio.org
Subject: Re: [SR-Users] Tips on picking random element from a list
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.
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&data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f6470
7428040a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C637
872913679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2
luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=zdoWq%2
FANIgusBipnbAD4%2BJpDzMc6fNrilEawt5rV2f8%3D&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&data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f647
07428040a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C63
7872913679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV
2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=zdoWq%
2FANIgusBipnbAD4%2BJpDzMc6fNrilEawt5rV2f8%3D&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 <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://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&sdata=qW9OEMTf1MeQl%2FRKqRLah
4WLQAogKViHQeS%2FRZTqgN0%3D&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&data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f6
4707428040a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C
637872913679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjo
iV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xLGo
PpD2479CdKjMhiWY67lLq4c8TqmyurLTepGqQTo%3D&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&data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f647074280
40a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C63787291
3679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzI
iLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=W7RpDwuZE%2B
L%2BkFtj98XacFKD6JcnukPdg36I0JyD%2Fv8%3D&reserved=0>
*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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8:39 p.m.
Hey Ben,
Something like that is exactly what I was looking for, and you just gave me
the headstart I needed! Appreciate the snippet!
Best,
Joel.
On Wed, May 4, 2022 at 4:06 PM Ben Kaufman <bkaufman(a)bcmone.com> wrote:
Without any external dependencies. Not sure how
you're populating your
pool of numbers for the caller id, but this generally works:
```
## Populate your list however you want:
$(avp(cid)) = "15555551000";
$(avp(cid)) = "15555551001";
$(avp(cid)) = "15555551002";
$(avp(cid)) = "15555551003";
$(avp(cid)) = "15555551004";
$(avp(cid)) = "15555551005";
$(avp(cid)) = "15555551006";
## $avp(cid) now holds 7 values.
## A random integer using the remainder $RANDOM divided by the number
of
## elements:
$var(rand) = $RANDOM mod $cnt($avp(cid));
## Use the random integer to get the CID out of the list
$var(rand_cid) = $(avp(cid)[$var(rand)]);
```
Ben Kaufman
Sr. VoIP Engineer - BCM One
+1.612.735.9309
bkaufman(a)bcmone.com
24 hour client support: +1.855.639.6300
-----Original Message-----
From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of Fred
Posner
Sent: Wednesday, May 4, 2022 3:02 PM
To: sr-users(a)lists.kamailio.org
Subject: Re: [SR-Users] Tips on picking random element from a list
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.
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&data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f6470
7428040a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C637
872913679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2
luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=zdoWq%2
FANIgusBipnbAD4%2BJpDzMc6fNrilEawt5rV2f8%3D&reserved=0
<https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.
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tils.f.core_hash&data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f647
07428040a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C63
7872913679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV
2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=zdoWq%
2FANIgusBipnbAD4%2BJpDzMc6fNrilEawt5rV2f8%3D&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 <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://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&sdata=qW9OEMTf1MeQl%2FRKqRLah
4WLQAogKViHQeS%2FRZTqgN0%3D&reserved=0>
Cheers,
Henning
--
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iV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xLGo
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Kamailio services -
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awa.com%2F&data=05%7C01%7Cbkaufman%40bcmone.com%7C233860f647074280
40a008da2e090ef7%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C63787291
3679726971%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzI
iLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=W7RpDwuZE%2B
L%2BkFtj98XacFKD6JcnukPdg36I0JyD%2Fv8%3D&reserved=0>
*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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938
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940
days old
7 comments
5 participants
participants (5)
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Bastian Triller -
Ben Kaufman -
Fred Posner -
Henning Westerholt -
Joel Serrano