Re: External index / Intermodule access

Hi Robert,

Thanks a lot for replying, and for the assistance
offered! Even though my work is pretty much done,
there may be a chance for me to rewrite part of the
code in the future.

Right now I cannot share the source, but that should
change within a month or so. Anyway, I'll try to
summarize what I did to address the issue of the
linked tables:
- I had a bunch of tables, each one in a separate
dynamically loadable module (.so). That made it
impossible for each module's variables to be accessed
from outside. I turned them into a single shared
object file, even though they remain separate source
and object (.o) files. Duh, seems stupidly trivial,
but turned hell into heaven for me.
- I added pointers for references in external tables,
and some routines in order to allow some tables to
insert and remove records in others.
- In some cases, the external part of the indexes was
kept stored along with the more meaningful pointers;
in others it was unnecessary. There was no strict
rule.

Hope this is of some use. Please feel free to ask me
about more gruesome details - I'll mail the code as
soon as I can.
Robert, sorry for CC'ing your private address; just
want to make sure it doesn't take another month for
this to reach you.

Greetings,

Daniel Fonseca

--- Robert Story <rstory@xxxxxxxxxxxx> wrote:
> Hi Daniel,
> 
> array-user is one of my babies. Sorry for the delay
> in responding. I dont check
> the users list as often as I check coders.
> 
> 
> On Fri, 19 Dec 2003 22:54:13 -0800 (PST) Daniel
> wrote:
> DF> I've used the sorted array helper for one of the
> tables successfully
> DF> (thanks for handling rowstatus, works great!)
> 
> Glad to hear it! It seems the array-user conf file
> doesn't get used nearly as
> much as the iterator one, so I'm always glad to hear
> from a satisfied customer.
> 
> DF> But still, no code or section of the tutorial,
> or even the examples that
> DF> come with net-snmp, address the issue of writing
> code for interconnected
> DF> tables, via external indexes.
> 
> Yep. That's because I haven't had time to get around
> to
> generalizing this more complex case and updating
> array-user. I've done a bunch
> of thinking about it, but hadn't put anything down
> on paper yet.
> 
> However, if you want examples of augmented and
> interconnected tables based on
> array-user, check out the net-policy project.
> <http://net-policy.sourceforge.com>. In particular,
> grab np-plutoplus and check
> out the mib directory. Alot of it is tables that
> point to other tables, but I
> do remember that the ipspCredentialSegmentTable uses
> the same data source as
> the ipspCredentialTable. I can't promise that it'll
> be pretty, but it can be
> done.
> 
> 
> I'd write more, but you were talking about a tight
> schedule, and it's been a
> month. If you've found a solution, you could share
> it. If you haven't, let me
> know and maybe we can hash something out.
> 
> -- 
> Robert Story; NET-SNMP Junkie


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