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Overview of the AstroGrid Consortium Meeting (Dec 14-15, 2004) in Edinburgh

The AstroGrid Consortium meeting held in December 2004 in Edinburgh brought together key stakeholders to discuss the progress and future directions of the AstroGrid project. Highlights included advancements in project frameworks since 2001, resource discovery mechanisms, access control standards, and the development of the common execution architecture for virtual observatories. Collaborative discussions led to essential planning for component reuse and data publishing strategies. This meeting was crucial for shaping the functionalities and interoperability of AstroGrid services.

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Overview of the AstroGrid Consortium Meeting (Dec 14-15, 2004) in Edinburgh

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  1. AstroGrid Framework Consortium meeting,Dec 14-15, 2004Edinburgh Tony LindeProgramme Manager

  2. A little bit of history… AstroGrid Consortium Meeting: Project Framework

  3. Dec 2001 AstroGrid Consortium Meeting: Project Framework

  4. Jan 2003 AstroGrid Consortium Meeting: Project Framework

  5. Jul 2003 AstroGrid Consortium Meeting: Project Framework

  6. Nov 2003 AstroGrid Consortium Meeting: Project Framework

  7. May 2004: Planning for AG2 AstroGrid Consortium Meeting: Project Framework

  8. Now for some component reuse… AstroGrid Consortium Meeting: Project Framework

  9. AstroGrid Posters at ADASS • Portal and Workflow • AstroGrid and the Registry: Enabling Resource Discovery • Access Control in AstroGrid software • The AstroGrid Common Execution Architecture • The Publisher's AstroGrid Library AstroGrid Consortium Meeting: Project Framework

  10. Portal and Workflow • Supports workflow paradigm (from the simple to the complex) • Queries and workflows are designed using the portal • Work is run remotely and asynchronously • Archives searched and results manipulated • Results are stored in a virtual file system • Queries and workflows can be re-used and shared AstroGrid Consortium Meeting: Project Framework

  11. Enabling Resource Discovery • Types of Registries:– Full, Publish, Special • Registry is the main focal point for all Astrogrid components • Agreed Standards with IVOA • Search and harvest interface • OAI standard for harvest interface • Adheres to the Astrogrid CEA standard • Types of resource • Generic services, web services, applications, … • Data collections • AstroGrid-specific resources (e.g. MySpace servers) • Use of XQuery language with eXist XML database. • Harvesting • US NVO • VizieR AstroGrid Consortium Meeting: Project Framework

  12. Access Control • AstroGrid has taken the lead in AAA because our system is based on writable storage • Implement single-sign-on (SSO) authentication • Using a community service (so, account can be used with a number of portals or other UIs) • Programme-to-programme authentication based on message security with SOAP headers and WS-Security • Facade API to hide details from implementations • Underneath, use JAX-RPC/Axis handlers to secure messages. • Little authorization support in 2004, more in 2005 • groups, quotas, community authorization, file sharing • Currently specific to AstroGrid • Working with IVOA to design and adopt a common standard AstroGrid Consortium Meeting: Project Framework

  13. Common Execution Architecture • Uniform interface for running applications in VObs • Set of WSDL and schema • Define the interactions in language independent way • Adapters (ExecutionControllers) implemented • Using Java Web services • To run legacy command-line applications • To run legacy HTTP GET/POST apps within the framework • ExecutionControllers • Allow asynchronous operation of the applications • Callback and polling mechanisms for delivery of results • Tightly integrated with JES (Job Execution System) • Allows programmable workflows AstroGrid Consortium Meeting: Project Framework

  14. Publisher's AstroGrid Library • Task: What's involved in publishing data to the VO? • Library of components • Make a data owners life a (relatively) straight-forward transition to a data owner/publisher • Variety of ‘plugins’ • Cope with different collections of data (modes of storage) • To make life easier for installers • and test how they might be presented to the VO • Ready-made web UI • Suitable for astronomers to use, • Includes useful configuration & monitoring features • VO-compatible interfaces for tools to access the data • Features to communicate with other VO services • E.g. Registries AstroGrid Consortium Meeting: Project Framework

  15. If you want to know more about… • Portal and Workflow • AstroGrid and the Registry: Enabling Resource Discovery • Access Control in AstroGrid software • The AstroGrid Common Execution Architecture • The Publisher's AstroGrid Library • Jeff Lusted • Kevin Benson • Guy Rixon • Paul Harrison • Martin Hill AstroGrid Consortium Meeting: Project Framework

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