[asterisk-dev] AstDB mySQL implementation

Nir Simionovich nir.simionovich at gmail.com
Thu Oct 26 08:20:49 CDT 2017


Just looked into the code, this is not a simple task to put a new backend
for astdb. The code isn't even designed
for something like that. Judging from what I can tell, and tell me if I'm
wrong - turning this into a configurable thing
would be more or less an open-heart surgery.



On Thu, Oct 26, 2017 at 4:16 PM Olle E. Johansson <oej at edvina.net> wrote:

> Somewhere in Asterisk space, there’s an old patch where I added ASTDB over
> realtime, meaning you can use
> any realtime storage. If I remember correctly there was a bit of
> chicken-and-egg problem with some astdb
> calls happening before realtime got launched, but otherwise it worked just
> fine in production for a long time.
>
> /O
>
> On 26 Oct 2017, at 15:13, Nir Simionovich <nir.simionovich at gmail.com>
> wrote:
>
> I'd like to +1 on that idea.
>
> While I'm somewhat reluctant to using mySQL as the base of such a change,
> as mySQL is an overkill for AstDB,
> having a proper AstDB configurable backend is an interesting thing.
> Personally speaking, I would actually prefer
> something like Memcache or preferably Redis. Both are similar in function
> and usability to AstDB, both are fairly
> scalable (Redis specifically) and both are fairly simplistic in nature.
>
> I do admit that this got me intrigued...
>
>
>
> On Tue, Sep 26, 2017 at 12:45 AM Matt Fredrickson <creslin at digium.com>
> wrote:
>
>> On Fri, Sep 22, 2017 at 12:12 PM, Ryan Wagoner <rswagoner at gmail.com>
>> wrote:
>>
>>> I've been scaling out FreePBX horizontally with Kamailio and custom
>>> FreePBX modules mainly to handle call center outbound dialing (around 20k
>>> calls per day). One of the issues I ran into was FreePBX uses the AstDB
>>> extensively and will write changes to it from the dialplan or the FreePBX
>>> user control panel.
>>>
>>> To overcome this I either needed to scrap FreePBX and build a new GUI
>>> using Asterisk realtime, heavily modify FreePBX (not an option), or rewrite
>>> AstDB to use a database like mySQL. I choose the last option and have had
>>> the code in production for just over a month. I'm backing it with a two
>>> node MariaDB Galera cluster with HAProxy providing failover for the client
>>> DB connections.
>>>
>>> I realize that SQLite was chosen for AstDB for performance reasons.
>>> However mySQL seems to perform just fine in the above scenario. Right now I
>>> have a db.c file that just has the mySQL code. Does anybody else have any
>>> interest in using mySQL for the AstDB backend? I'm debating if it would
>>> make sense to have the option to select your AstDB backend.
>>>
>>
>> Hey Ryan,
>>
>> First off, thanks for letting us know about the fun project you embarked
>> upon.  I think Josh already answered some of your questions, but with
>> regards to the work you did - I believe that in the past there have been
>> others who have wanted an ODBC AstDB driver as well.  If your code can be
>> made configurable, it may be a good contribution.
>>
>> Anyways, hope you are doing well, and perhaps we'll see your code up on
>> gerrit at some time in the future. :-)
>>
>> --
>> Matthew Fredrickson
>> Digium, Inc. | Engineering Manager
>> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
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> --
> Kind Regards,
>   Nir Simionovich
>   GreenfieldTech
>   (schedule) http://nirsimionovich.appointy.com/
>   (w) http://www.greenfieldtech.net
>   (p) +972-73-2557799 <073-255-7799>        (MSN): nirs at greenfieldtech.net
>   (m) +972-54-6982826 <054-698-2826>      (GTALK):
> nir.simionovich at gmail.com
>   (f) +972-73-2557202 <073-255-7202>      (SKYPE): greenfieldtech.nir
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Kind Regards,

  Nir Simionovich

  GreenfieldTech

  (schedule) http://nirsimionovich.appointy.com/

  (w) http://www.greenfieldtech.net

  (p) +972-73-2557799        (MSN): nirs at greenfieldtech.net

  (m) +972-54-6982826      (GTALK): nir.simionovich at gmail.com

  (f) +972-73-2557202      (SKYPE): greenfieldtech.nir


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