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

[Yuriy Gorlichenko]

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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