MTAF VO Course 04: VO Architecture

Description of the Virtual Observatory architecture, and IVOA documents that make it explicit. Part of the virtual observatory course by Juan de Dios Santander Vela, as imparted for the MTAF (Métodos y Técnicas Avanzadas en Física, Advanced Methods and Techniques in Physics) Master at the University of Granada (UGR).

Transcript

1. VO Architecture Documents
   Juan de Dios Santander Vela (IAA-CSIC)
   

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2. Overview
   The Virtual Observatory: Layers & Architecture
   VO Elements
   VO Resources
   

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3. VO Architecture
   

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4. VO Architecture
   VO Infrastructure
   Views
   (Apps, Web Portals…)
   Services
   (Data, Computing…)
   Registry
   User
   

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5. VO Architecture
   

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6. VO Architecture
   

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7. VO Architecture
   VO Infrastructure
   Views
   (Apps, Web Portals…)
   Services
   (Data, Computing…)
   Registry
   User
   

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8. VO Architecture
   with>
   User
   VO App
   VO App
   Web Browser in VO
   Portal
   User's Machine
   PLASTIC/SAMP messages
   OAI-PMH Registry servers
   SIAP
   SSAP
   SCS
   HTTP
   Image servers
   Spectra servers
   Catalogue servers
   Traditional web
   servers
   VO Web Services
   Internet
   Local file
   storage
   Local file access
   VO data access protocols (Data Access Layer),
   and other web services' access protocols
   Service kind
   Access
   protocol
   

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9. VO Architecture
   

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10. VO Architecture
    

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11. VO Architecture
    

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12. VO Architecture
    

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13. VO Architecture
    

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14. VO Architecture
    

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15. Resource Registry
    Resource
    Metadata
    Resource
    Identifier
    (IVO)
    VO
    Resource
    Registry
    Interface
    VOData
    Service
    Standard
    RegExt
    Application
    RegExt
    SimpleDAL
    RegExt
    

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16. VO API
    XML Manipulation
    (SAX, EXPAT, DOM…)
    VO Application
    FITS Manipulation
    (cfitsio, nom.tam.fits,
    PyFITS…)
    VOTABLE
    Data Model Mapping
    Spectral Energy
    Distribution
    Other application-specific APIs
    Operating System Services
    VO-specific API
    REST:
    DAL protocols
    (SIAP, SSAP, SCS)
    SOAP: OAI-PMH
    (Registry)
    XML-RPC:
    PLASTIC, SAMP
    Web-Services API
    

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17. VO API
    get coordinates
    for object name
    get info
    for object
    show object
    coordinates
    obtain data
    available for
    object in suitable
    services obtain relevant services
    given coordinates and
    other selection criteria
    query relevant services
    fulfilling criteria
    display retrieved data
    in suitable form
    

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23. VO API
    get coordinates
    for object name
    get info
    for object
    show object
    coordinates
    obtain data
    available for
    object in suitable
    services obtain relevant services
    given coordinates and
    other selection criteria
    query relevant services
    fulfilling criteria
    display retrieved data
    in suitable form
    WEB SERVICES
    

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24. References & Links
    IVOA Architecture (IVOA Note 2010-11-23)
    Integrating Radio Astronomical Archives and
    Legacy Tools in the VO Framework, Ph.D. Thesis,
    Chapter 2
    

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