[glue-wg] GlueChunkKey

[Paul Millar]

Hi Stephen,

On Wednesday 30 January 2008 20:54:18 Burke, S (Stephen) wrote:
> > [mailto:glue-wg-bounces at ogf.org] On Behalf Of Paul Millar said:
> > for site_dn in $(ldapsearch -LLL -h lcg-bdii.cern.ch -p 2170
> >     [...snip: nasty bash...]
> > 	sed -ne 's/^GlueSiteUniqueID: \(.*\)/\1/p';
> > done
>
> I think you made my point!

Could be :)

> There's no way I could remember that, and I  
> don't want to try to reinvent it every time I want to query for
> something - constructing ldap queries is hard enough already ... 

Well, I just wanted to point out it was possible to do these sorts of queries 
without using a ChunkKey entry.

That isn't to say we should get rid of them, only that, for these queries, 
they're not essential.  LDAP's support for querying is pretty limited, I 
guess that's why most people end up using grep/sed/awk/perl/python/(...etc..)

> as a 
> subsidiary point your query is not the same as mine, although it may
> happen to give the same result in this case. I assume that your method
> could be modified to do the same though, i.e. to only chop the DN back
> to the SE and query that for the ForeignKey (which will have to stay in
> the schema anyway).

Sorry, that was my misunderstanding.

I had a previous version of the script that did precisely that: chop the 
SEAccessProtocol DN back to find the SE, pull out the ForeignKey element and 
extract the SiteUniqueID from that.

However, I though it would be "cleaner" to simply navigate straight up to the 
site-level object from the SEAccessProtocol object and extract the 
SiteUniqueID from there.

Are there circumstances where this wouldn't work?
(assuming people are publishing valid information)

Cheers,

Paul.