perfsonar development work

["Jeff W. Boote" <>]

Guilherme Fernandes wrote:
> In the Owamp cenario we created here at RNP, we make unique ids 
> appending the timestamp of the time of the request to the metadata-id 
> (done by the CLMP when he receives the request so it can keep track of 
> it, it could also be done by the client, but I guess that not by the 
> MA). In the case of RRD MA and SQL MA related to utilization I dont know 
> how this would be done.

The time of the request to the MA, or the time of the request to the CLMP that 
generated the data in the first place?

If it is the time of the request to the MA, then this id would not be 'stable'. 
So, it sounds like the answer to my question is that it would take some work to 
do this in the CLMP-MA.

> > b) Is it necessary to confirm that the id is unique? If so, how do we 
> > go about doing that (rather, how can a program go about doing that)?
>
>
> This could easily be done by a query to the eXist database. Also, the 
> id's only have to be unique for that specific MA (I guess this was 
> already being considered hehe).
>
> That's from a CLMP -> MA perspective.

It is not too difficult to take something that is 'host' unique and make it 
'globally' unique... This does not address the question of stability - but if 
the id is set in the eXist database at the time the database is populated, then 
I don't think the stability part would be hard to deal with.

jeff