perfsonar development work

[Roman Lapacz <>]

Andreas Hanemann wrote:
> The whole discussion should be seen in relation to a use case that we
> had discussed earlier, namely that a user would like to find out about
> the "nearest" MP with respect to a given network location. This would
> result in two scenarios:
>
> - with service info in cNIS
> 1) user asks special transformation service about nearest MP
> 2) transformation service asks cNIS for network neighbors of network
> location and checks whether the nodes contain an MP; this is done
> recursively until a node with an MP is found
> 3) tranformation service returns info to user
>
> - without service info in cNIS
> 1) user asks special transformation service about nearest MP
> 2) transformation service asks Lookup Service for MPs in domain; stores
> information
> 3) transformation service asks cNIS for network neighbors of network
> location (again recursively); checks with data from Lookup Service
> whether an MP location is encountered
> 4) tranformation service returns info to user
>   

My understanding of the Transformation Service is different. This 
service is only to transform provided set of data from one format into 
an other one (for example aggregation).
I think that the information about nearest MP should come from Topology 
Service or Lookup Service. This is what I remember from GFD doc and the 
discussion on the pS framework.
Am I right?

Roman