Re: [Orbit-python-list] NameService howto?

[Christian R. R. <ki...@as...>]

On Thu, 17 May 2001, Frank Rehberger wrote:

> I dont understand how to connect to the nameservice of orbit.
> The following shows my code:

I assume here that you are running orbit-name-server, included in the
ORBit distro, yes?

> orb  = CORBA.ORB_init(sys.argv, CORBA.ORB_ID)
> poa  = orb.resolve_initial_references("RootPOA")
> service = orb.resolve_initial_references("NameService")

Ah, your error lies here, and I'd like Tack to comment if he may.
Look, every CORBA-ized object publishes an object reference for itself. If
you have noticed, when you run o-n-s, it prints to stdout it's own IOR.

Now I think the standard facility for retrieving this is from etc/orbitrc
or ~/.orbitrc. Which means AFAICS that if you run the NameService, you
have to paste the IOR into that file. I know of no other way to do it, but
perhaps Eliott or somebody from orbit can help.

This is a definite problem, since you'll be running the nameservice with
interruptions, possible, which means you'll have to update the file in
realtime. I avoid doing that completely by going an orthogonal way: I
catch the nameserver reference from o-n-s and:

a) store it in a file in an nfs-shared directory, where clients can catch
it.

b) publish the reference through a webserver or whatever other means. I
personally created a tiny socket server and client that just spits the IOR
over.

Now my personal opinion is that's just plain annoying. But CORBA -- not
ORBit, I think, put perhaps it lacks a service (from what I grasp of it)
provides no standard mechanism to bootstrap the IOR, and that's evil. And
since GNOME publishes IOR in another fashion (using xprops, I think) it
doesn't bother them enough to implement some standard workaround :-)

> I would like to list the nameservice content.
> Who can help me?

I used to have some clients but I seem to have lost them. I'm attaching
the evil solution I use, so you can check it out. Please comment out the
part referring to the configfile as I don't really want to hack this right
now :-)

Take care,
--
/\/\ Christian Reis, Senior Engineer, Async Open Source, Brazil
~\/~ http://async.com.br/~kiko/ | [+55 16] 274 4311