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MySpace

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MySpace Presentation Transcript

  • 1. MySpace: Personalized Work Space in AstroGrid Catherine Ling Qin 26th Nov 2003
  • 2. Background • Vast amount of Data • Sharing Data (Limited Storage for each astronomer) • Distributed Across The Globe 26/Nov/2003 IVOA Small Projects, BeiJing
  • 3. Overview • MySpace is a component of AstroGrid • A system for accessing astronomical archives which is being developed in the UK • MySpace provides AstroGrid users with scratch space for storing temporary/permanent datasets, typically the results of queries submitted to large databases, and other transient files. 26/Nov/2003 IVOA Small Projects, BeiJing
  • 4. Design • Open-source software products • Distributed, collaborative and centrally- controlled data storage/processing system • Simple and user-friendly interface • Easy Installation (Plug and Play). Eventually be deployed at institutions around the globe. 26/Nov/2003 IVOA Small Projects, BeiJing
  • 5. MySpace Components • MySpaceManager Invoked by users to access or manipulate data sources in MySpace systems. It incorporates a registry comprising the Meta Data describing the data sources in the MySpace system. Typically there will be one MySpace Manager per Community. 26/Nov/2003 IVOA Small Projects, BeiJing
  • 6. MySpace Components (Continue) • MySpaceServer  Act like repositories and are where the Data Sources are kept. • Cache Server -- Stores Transient Data • Community Server – Stores Data Sources within the Community. 26/Nov/2003 IVOA Small Projects, BeiJing
  • 7. MySpace Components (Continue) • MySpace Explorer  Easy to use.  Web Based. The User Interface displayed within a web browser that allows astronomers to interactively browse/edit their data sources within MySpace Systems.  MySpace Explorer displays a simple and intuitive representation of hierarchical data sources. The notional hierarchy of containers does not correspond to the actual directory structure on MySpace Servers. Rather, the structure is stored and maintained by MySpace manager 26/Nov/2003 IVOA Small Projects, BeiJing
  • 8. MySpace Components (Continue) • MySpace Explorer 26/Nov/2003 IVOA Small Projects, BeiJing
  • 9. MySpace Components (Continue) • MySpace Manager • MySpace Server Manager MySpace Internet • Cache Server Data Transfer between • Community Server servers Server MySpace Server MySpace Server MySpace Collocated data transfer Collocated data transfer Collocated data transfer DatasetAccess DatasetAccess BeiJing Community DatasetAccess Leicester Community 26/Nov/2003 IVOA Small Projects, BeiJing
  • 10. Technology Choices • Web services • Java • Cocoon (MVC) 26/Nov/2003 IVOA Small Projects, BeiJing
  • 11. Current Implementation and Supported Functionalities • Create/Delete File or Container • Upload/Download File • Copy/Move File • Look up details of a single file • Look up details of all files matching an optionally wild-carded file name. • Extend Lease • A rudimentary MySpace Explorer. 26/Nov/2003 IVOA Small Projects, BeiJing
  • 12. Enhancements and Open Issues • File Storing System Combined with DBMS Database. • Access Control • File Transferring Protocols (Http/FTP/GridFTP) • In order that free access to (sometimes huge) distributed data sources does not cause network resources to become overloaded, we would need to investigate the possibility of smart algorithms for controlled replication of (parts of) data sources. 26/Nov/2003 IVOA Small Projects, BeiJing