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<H1><nop>IVOA Grid & Web Services: Support interfaces</H1>

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---++ Overview
It is proposed that all web services in the VO should have some element of commonality in the form of a core set of functions that they all provide. Such an approach would support management activities within the VO. In addition, there are certain management activities such as log harvesting that, while not associated with every VO service, are still common enough that a general interface can be specified for them.

---++ VO Support Interface (VOSI)
VOSI proposes that all services must return their service metadata and whether the service is operable and the reliability of the service for extended and scheduled requests. 

---+++ Specification
The latest version of the VOSI specification is 0.4. The most recent version of the log harvesting interface is specified in VOSI v0.24.

   * [[%ATTACHURL%/VOSupportInterfacesMandatory-0.4.odt][VOSI 0.4]]
   * [[%ATTACHURL%/Availability-0.4.xsd][Availability schema]] 
   * [[%ATTACHURL%/VOSupportInterface-0.24.pdf][VOSI 0.24 for log harvesting]]
  
---+++ Discussion

   * [[VOSIDiscussion][Discussion page for specification]]

---+++ History
These are older versions of the VOSI specification:

   * [[%ATTACHURL%/VOSupportInterfaces-0.24.pdf][VOSupportInterfaces-0.24.pdf]]: Proposed Standard Support Interfaces.
   * [[%ATTACHURL%/availability.xsd][availability.xsd]]: Schema to use with standard interfaces WSDL
   * [[%ATTACHURL%/VObsService.wsdl][VObsServices.wsdl]]: WSDL for mandatory standard-interfaces specification
   * [[%ATTACHURL%/VSupportServices.wsdl][VOSupportServices.wsdl]]: WSDL for non-mandatory log harvesting support interfaces specification
   * [[%ATTACHURL%/VOSupportInterfacesMandatory-0.25.pdf][V0.25 spec for mandatory part of VOSI]]. Includes WSDL, XSD.
   * V0.26 spec for VOSI: [[%ATTACHURL%/VOSupportInterfacesMandatory-0.26.pdf][PDF]] and [[%ATTACHURL%/VOSupportInterfacesMandatory-0.26.odt][editable version]]
   * V0.3 spec for VOSI: [[%ATTACHURL%/VOSupportInterfacesMandatory-0.3.pdf][PDF]] and [[%ATTACHURL%/VOSupportInterfacesMandatory-0.3.odt][editable version]]. This version is a compromise between VOSI v0.26 and DAL-WG plans.

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Topic revision: r1 - 2008-04-24 - MatthewGraham

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