[Go-essp-tech] Selecting GridFTP Server Types in the Replication Client

[Craig E. Ward]

On the GO-ESSP call today, we bounced around some ideas about how replication 
could distinguish between the different types of GridFTP servers that the ESG 
Federation will have. This is what I heard. I'd like to make sure we're all on 
the same page.

A naming convention will be applied to the a relevant property (Which 
property?) that will mark a particular service as either "normal" GridFTP or 
the ESG-security-specific (i.e. BDM) GridFTP. The replication client will use 
an appropriate name when selecting services for the user's preferred data 
movement agent.

This also requires a new configuration option for the replication client that 
allows the user to control what the which service to use in the transfer 
control file.

In the meta data XML, the replication client is looking at the name stored for 
"data_access_capability." The default value to match is "GridFTP." It isn't 
clear to me where this value is coming from, but the "serviceType" attribute of 
the "service" element in the TDS catalog is set to "GridFTP" for that type of 
protocol. Is the gateway placing the "serviceType" value into the 
"data_access_capability" attribute?

In another thread, Bob wrote about restrictions on what names were allowed at 
certain points. If so, this could complicate the issue, but not prevent this 
solution from working.

Who remembers things differently?

Thanks,

Craig

-- 
Craig E. Ward
USC Information Sciences Institute
310-448-8271
cward at ISI.EDU