Eco Grid Conference Call Notes 7 Sep 2004

Participants

Agenda

1. EcoGrid registry
• WSDL Interfaces adequate?
• Web UI needed/ adequate?
• Registry metadata
• automatic registration/deregistration for services
2. EML Metadata for SRB-stored objects
• Environemntal data for BEAM
3. Identifiers: use ours, or LSID, and implement!
4. Update on EcoGrid Web UI design (Tekell) EcoGridWebDesignNotes

These topics were delayed until next meeting

1. Certificates and authentication
• see CertificateAuthorityDesign for background
2. EcoGrid query semantics
• handling EML version changes (2.0.0 vs. 2.0.1)
• translating EML and Darwin Core metadata queries
3. Update on data query/subset functionality (Tao)
4. Update on put interface implementation (Zhu)

Notes

1. EcoGrid registry
• need registry metadata
• Raja suggests need name-value pairs
• previously discussed need for structured metadata, including coverage, but hard to keep updated
• Raja argues the more structured registry metadata is not needed, at least from the UI perspective
• Do we need to reimplement using globus? Probably not? Globus registry still not presistent. Our metacat implementation is persistent.
• Are there specific metadata fields we need to help users choose nodes to search
• Action items
• Extend registry metadata to accept xml metadata documents (Bing, Rod)
• Establish short list of standard attributes, extend UI to accomodate them (Bing, Rod, Matt)
• Start at Dublin core and extend it
• Fill out metadata for specific nodes (Bing, Rod)
• Make registries broadcast new registration change events (Bing, but lowest priority)
2. EML Metadata for SRB-stored data sets
• Option 1: store EML in metacat and point at SRB object (preferred)
• Figure out where Deana is storing her data (same as LTER)?
• How to coordinate authentication and access control
• Use GSI certificates
• Synchronize SRB/Metacat user lists and access control changes
• Action items
• Contact Deana about putting data in SRB and metadata in Metacat (Matt)
• Verify that accounts can be synchronized between Metacat and SRB (Bing)
3. Identifiers
• Agreed on using LSID format for all EcoGrid identifiers
• need to retrofit existing EcoGrid services to use them
• Action items
• Fix get, put, query to use LSIDs everywhere (Bing, after registry stuff)
• Coordinate with Thau on establishing an LSID server (Rod)
• Talk with Dave Vieglais about using LSID's for Darwin Core records (Matt)
4. Overview of Ecogrid web UI
• Tekell gave overview of progress (see page linked above)
• has need for EcoGrid Level II interfaces to do resultset merging
• Q: do we have interfaces defined for getting summary counts back instead of results
5. Next Conference call: September 17, 2004 11am PDT