[SR-Users] Trouble with DB APIs

[Davidson, Erik]

Hey Everyone!

I'm currently working on a database module and I've come across some issues/confusion that I was hoping someone could clear up for me.  I've been looking at the existing modules and the docs online for help but I can't find a definitive answer for them.

  1.  I see there are 2 DB APIs (srdb1 and srdb2) and I gather that srdb2 is the newer version?  Should I aim to use srdb2 exclusively or should I also use srdb1?
  2.  It looks like srdb2 provides a db_uri command that can be used to implement custom URI parsing but I can't figure out how to hook into it.  I added it to my exported commands but it was never called.  When I looked through the code I saw the only place that ever really uses it is db_ctx, which itself looks to be used in the child_init of modules.  I'm developing a database module that I want to be a drop-in replacement for others, but it needs multiple hosts specified in the connection uri (similar to the URI example here http://docs.mongodb.org/manual/reference/connection-string/) and I can't figure out the best place to do it.  Should I be doing it in db_func_t.init because it has the full string version of the uri and parse it there? Do I then have to reimplement everything that db_do_init would be doing?
  3.  Do I need to implement multiple database interfaces to get full module coverage in Kamailio? I was looking at db_berkeley as a reference and it looks like it has the KAMAILIO_MOD_INTERFACE as well as the SER_MOD_INTERFACE implemented.
  4.  Is there a preferred way to handle the API binding (such as db_ commands vs db_bind_api)?

Thanks for any help or direction you can give me!

- Erik Davidson

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