AstroGrid Datacenters

1
AstroGrid Datacenters

• IVOA Interoperability meeting
• M Hill (ROE), May 2004

2
PAL

• Easy to publish to the VO
• Implements VO interfaces
• Home-grown Astrogrid (2 versions)
• NVO-Cone search
• (extra Simple) SIAP
• CEA
• Prepped for SkyNode
• Querier Plugins

3
Architecture
SIAP
CEA
Axis
AstroGrid
Plugin Manager
SkyNode
Cone
Datacenter Implementation
Slinger
/XML/CSV zip/plain email/file/ftp/myspace
4
Asynchronous Querying

• Identifying a Query
• Keeping it transient
• No work files/temporary files
• All Streaming
• TargetIndicators
• Aborting
• Tricky depends on implementation
• Timeouts
• None
• Necessary
• Polling Status
• Callback status (event-driven)
• Requires webservice to call

5
Future

• Deploying to ROEb, Leicester, Cambridge (UK),
  JBO, ESO.
• SkyNode interface
• Metadata wizards
• -gt Query pages
• Full SIA, SSA interface
• Comprehensive status

6
For Discussion

• Versioning services
• Converging with SIA/SSA
• Keyword/value GET
• Virtual columns for ADQL (-gt Yuji)
• ADQL -gt ? -gt VOQL
• Heirarchical Data sets
• Images
• Units
• Defining target formats, compression, etc
• Defining column/table metadata (VODataService
  VOResource)
• PAL -gt VOPL ?
• Uploading