perfsonar development work

[Loukik Kudarimoti <>]

Hi Murilo,

I am not sure if you will get much response on this topic here. cNIS 
activity in GEANT2 is working on something similar.

What I can say is: It depends on why the information is not available.

If its because of database connectivity problems, you have to send a 
result code back. Same applies for all other 'faults'

If it is because there is no such data present,
- if the query that you are answering is contained in a metadata 
element, you can send back the same metadata element along with empty 
data. Empty data element means no data available

- alternatively (I am not too sure about this approach), you can still 
send back a result code saying 'no match'. This approach is used by rrd 
MA as well...but as I said, I am not too sure about this approach.

hope it helps,
Loukik.


Murilo Vetter wrote:
> Hi everyone,
>
> I am doing the topology service of RNP and I defined something here. I
> defined one message and I have one doubt, how to send and answer saying
> it is not found in the database?
>
> The document is explaining the idea.
>
>