[sr-dev] Creating of module: location at redis

[Alekzander Spiridonov]

Hi,

I believe replacing a usrloc for nosql's is much more efficient than trying
to match sql-like queries. Especially since most probably you are not gonna
have db_mode's for reddis.

2015-03-30 10:21 GMT+03:00 Yuriy Gorlichenko <ovoshlook at gmail.com>:

> Daniel, I want to ask you for some help with my idea. Just for some
> advices and explanations of some structures.
> Thanks for help.
>
> The first of all:
> I think not write to create new module for integration of usrloc and
> redis. I thing it is good idea to add new features to existing usrloc and
> use ndb_redis module for connection.
>
> As I undersand when learning source code of usrloc module - this module
> use /kamailio/lib/srdb1/db.h
> This header implements 2 structures that i see at ul_mod files:
>
> extern db1_con_t* ul_dbh;   extern db_func_t ul_dbf;
>
> This structures handle SQL connections.
>
> I ask this because at the README i see
>
> modparam("usrloc", "db_url", "dbdriver://username:password@dbhost/dbname")
>
>
> Looking at the API documentation I find API that use DB detection, then I
> look at db.c at my kamailio ( kamailio 4.3.0-dev5 (x86_64/linux) e172b7
> ) too but can not find any strings about mongo.
> The second As I see - location not working with redis because it use API
> for DB and  API not omplement redis integration. So I thing it is write way
> to rewrite module with external connection to redis, not using API, Isn't
> it?
>
> Thanks once again
>
> 2015-03-27 0:51 GMT+03:00 Daniel-Constantin Mierla <miconda at gmail.com>:
>
>>  Hello,
>>
>> might worth reading the devel guide:
>>
>> - http://www.asipto.com/pub/kamailio-devel-guide/
>>
>> It is for an older version, but still good.
>>
>> Then, if you want to implement a db_redis module (a module that can be
>> used instead of other db modules, such as db_mysql), maybe checking
>> db_mongodb is good to learn by example, given the mongodb is nosql system
>> as well.
>>
>> I think for redis the main things to sort out is how you serialize the
>> structures that are going to be saved (maybe using serialized json will
>> allow reusing code from mongodb) and what will be the key value, as redis
>> is practically a (key, value) storage. Maybe storing a redis hash structure
>> is an alternative. Then, how the expressions to select records are built to
>> match in redis system.
>>
>> Not being very familiar with redis, I cannot assert properly the
>> complexity to get the above sorted out nicely.
>>
>> Cheers,
>> Daniel
>>
>> On 26/03/15 22:27, Yuriy Gorlichenko wrote:
>>
>> Daniel, hello. Our service need to translate location table to redis, and
>> we want start to write own module for kamailio. Akn you give us some
>> advices and documentation for API of kamailio, that we may to use for
>> creation own module.
>> Thks
>>
>>
>> _______________________________________________
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>>
>>
>> --
>> Daniel-Constantin Mierlahttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Kamailio World Conference, May 27-29, 2015
>> Berlin, Germany - http://www.kamailioworld.com
>>
>>
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>>
>
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-- 
Best regards,
Alekzander Spiridonov
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