[Go-essp-tech] Initial reactions to the revised registry schema

[Estanislao Gonzalez]

Hi,

I'm not sure it's totally clear what the registry should offer (nor 
where), at least not for me...

I haven't seen the xsd yet (I get a file not found), but I would assume 
that the schema Gavin's has provided is intended for the data-node (it's 
in the data node manager), not the gateway, so:
1) (Gateway->datanode) Can be done, but it's not really required. The 
data node can only describe itself.  The gateway should know while 
parsing this (or is this being harvested at a central repository?)
2) (Gateway list) There's no way the data-node can have information 
regarding other gateways. If it can, I still think it's not a good idea.

I think we are mixing two different registry concepts: The ESGF Registry 
of the whole federation, and the data node registry of their services.

I would assume that the data nodes have a description of their services 
publicly accessible. This should also be the case of the gateway.
And the question would be where all this get linked together. For the 
time being, I would assume hard coded at PCMDI, where all this data 
might get harvested. Or the gateway harvest the description of its 
data-nodes and from there to PCMDI.

I'm not sure I've understood the intention of the current 
implementation, so sorry if I ask a stupid question here.
Please, feel free to enlighten me :-)

Thanks,
Estani
Am 14.04.2011 22:21, schrieb Nathan Wilhelmi:
> Hi Gavin,
>
> A couple of initial reactions to the schema revision you sent out today.
>
> 1) In the previous revisions the AuthorizaionPolicy was used to map
> Gateways->Datanodes. We need this to drive which datanodes we collect
> metrics from. In the schema you sent out how are you envisioning the
> mapping between gateways and datanodes being represented?
>
> 2) In the gateway we need to know the URL of the other gateways for
> generating links. In the previous schema these were gateway element
> attributes. What attributes are you envisioning these moving to? (Used
> to be baseURL&  secureURL)
>
> Thanks!
> -Nate
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-- 
Estanislao Gonzalez

Max-Planck-Institut für Meteorologie (MPI-M)
Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre
Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany

Phone:   +49 (40) 46 00 94-126
E-Mail:  estanislao.gonzalez at zmaw.de