IVOA Distributed Services and Protocols (DSP) Home

Contents

---

Chair: IVO.JesusSalgado

Vice Chair: IVO.SaraBertocco

Chairs Emeriti: GiulianoTaffoni, MatthewGraham, GuyRixon, AndreSchaaff, BrianMajor

Vice Chair Emeritus: DaveMorris, PaulHarrison, AndreasWicenec, BrianMajor

Rationale

This working group will investigate, develop, and recommend protocols and standards to enable interoperability across a broad range of functionalities, including but not limited to:

• Authentication and Authorization: Establishing secure and consistent methods for user authentication and authorization across platforms, enabling single sign-on capabilities and granular access control.
• Credential Delegation: Facilitating secure delegation of user credentials, allowing authorized applications and services to access resources on behalf of users without sharing sensitive login information.
• Workflow Execution and Management: Defining protocols for interoperable workflow descriptions, execution, and monitoring, enabling researchers to seamlessly port and share complex analysis pipelines across different platforms.
• Workflow Analysis and Provenance: Developing standards for capturing and exchanging workflow provenance information, enabling reproducibility and facilitating collaborative analysis of scientific results.
• User Data Interchange and User Areas: Establishing secure and efficient mechanisms for sharing and synchronizing user data and personalized settings across platforms, ensuring a consistent user experience.
• Execution Interfaces and APIs: Defining standardized APIs and interfaces for accessing platform functionalities, promoting code reusability and simplifying integration efforts.
• Cloud Technologies and Deployment: Addressing interoperability challenges related to cloud-based deployments, including containerization, resource management, and data transfer.

This group is a continuation of the GWS IVOA protocol and it was formed from a merger of the Web Services group and the Grid group, ordered at the IAU General Assembly in 2003.

Participation

The DSP is following a roadmap for our activities, that we update at every IVOA Interoperability Meeting which occur twice per year. The DSP has a different topic of discussion and ongoing activities and interacts with other WG in the IVOA. Discussions are led on the DSP mailing list, where everybody can post his ideas and comments or follow the discussions.

The DSP is organizing periodic teleconferences dedicated to specific topics or general update of the activities.

The most important output of the working group are the specification documents that formalizes the modeling efforts led by this group and propose standards to the IVOA standardization process. Some members take an active role in writing these documents, while others review the documents, make comments, and/or possibly test and implement the proposed design.

Mailing list

• The main mailing list for the group is: dsp@ivoa.net
  • Register: http://mail.ivoa.net/mailman/listinfo/dsp
  • Archive: http://mail.ivoa.net/pipermail/dsp/

• See old discussion at:
  • Archive: http://mail.ivoa.net/pipermail/grid/

Teleconference

The working group is experimenting with holding monthly telecons to share information and experiences with relevant technologies and standards. Please look to the activity in the DSP mailing list for more detailed information.

Activities

Each of the main areas of concern of this group has its own page:

• Remote Execution
• VOSpace
• Authentication and Authorization
• Asynchronous services (UWS)
• Support interfaces
• Service interoperability
• Computing Services API

Active projects

Project	Version	State	Errata
Single-Sign-On	2.0	REC
Credential Delegation	1.0	REC
Execution Planner	1.0	REC

Stable projects

VOSpace	2.1	REC
Universal Worker Service	1.1	REC
Support Interfaces	1.0	REC	Errata
Authorization: Group Membership	1.0	REC

Current Roadmap

Below is the roadmap for the Grid and Web Services Working Group after Virtual Interop 2024 (Nov).

• Execution Broker (previously known as Execution Planner)

Consolidated Working Draft at

https://githuhttps://github.com/ivoa-std/ExecutionBroker

Prototype in development by Dave Morris, expected for Malta, following the P3T new convention

• UWS

Working on a new version of UWS, to work in coordination with a new TAP server implementation, in line with P3T effort, using <a data-wikiword="OpenAPI" href="https://swagger.io/specification/" target="_blank" title="OpenAPI"> <a href="https://wiki.ivoa.net/twiki/bin/edit/IVOA/OpenAPI?topicparent=IVOA.2024ARoadmap;nowysiwyg=0" rel="nofollow" title="OpenAPI (this topic does not yet exist; you can create it)"> OpenAPI </a> </a>

• VOSpace

New draft 2.2 was delayed as per P3T new efforts. This version will include - Simplified transfer negotiation - Improved recursive operations - Simplified quotas

• SSO

New draft 2.1 or 3.0 is being evaluated. SaraBertocco has the lead on this activity

Documents and Standards

Document	Version	Type	Errata	Next
PDL: Parameter Description Language	1.0	REC
VOSI: Support Interfaces	1.1	REC	Errata
Single Sign-On Profile: Authentication Mechanisms	2.0	REC		2.1
Credential Delegation Protocol	1.0	REC		2.0
Universal Worker Service (UWS)	1.1	REC
VOSpace	2.1	REC	Errata	2.2-3.0
Group Membership Service	1.0	REC
XML Schema Versioning Policies		NOTE
Web Service Basic Profile	1.0	OBSOLETE

Other Documents

• UWS Registry Extension. This note was part of a proposal for tagging UWS sync and async endpoints using interface types. The proposal is no longer relevant so and is abandoned. (Nov, 2018 -- College Park Interop)
• Review of the Shibboleth system.
• Proposed security architecture
• Registry metadata relating to security: initial proposal
• Access Control Interface v0.1

Sessions at Interop Meetings

Most of our face-to-face activity takes place during IVOA Interoperabiltiy Meetings. Follow the Data Model Page links to locate agendas, presentation slides, and action items.

Interop	Main page	DSP pageRole
Virtual Meeting (Nov 2024)	InterOpNov2024	InterOpNov2024GWS
Virtual Meeting (May 2024)	InterOpMay2024	InterOpMay2024GWS
Virtual Meeting (Nov 2023)	InterOpNov2023	InterOpNov2023GWS<a data-wikiword="InterOpMay2023GWS" href="InterOpMay2024GWS" title="InterOpMay2024GWS"> </a>
Virtual Meeting (8-12 May 2023)	InterOpMay2023	InterOpMay2023GWS
Virtual Meeting (25-29 Apr 2022)	InterOpApr2022	InterOpApr2022GWS
Virtual Meeting (1-4 Nov 2021)	InterOpNov2021	InterOpNov2021GWS
Virtual Meeting (24-88 May 2021)	InterOpMay2021	InterOpMay2021GWS
Virtual Meeting (17-19 Nov 2020)	InterOpNov2020	InterOpNov2020GWS
Virtual Meeting (4-8 May 2020)	InterOpMay2020	InterOpMay2020GWS
Groningen, NL (11-13 Oct 2019)	InterOpOct2019	InterOpOct2019Gws
Paris , France (12-17 May 2019)	InterOpMay2019	InterOpMay2019GWS
College Park, Maryland, USA (08-10 Nov 2018)	InterOpNov2018	InterOpNov2018GWS
Victoria, Canada (27 May 01Jun 2018)	InterOpMay2018	InterOpMay2018GWS
Santiago, Chile (27-29 Oct 2017)	InterOpOct2017	InterOpOct2017GWS
Shanghai, China (15-19 May 2017)	InterOpMay2017	InterOpMay2017 -GWS
Trieste, Italy (21-23 Oct 2016)	InterOpOct2016	InteropOct2016GWS
Cape Town, Sth Africa (9-13 May 2016)	InterOpMay2016	InterOpMay2016 -GWS
Sydney, Australia(30/10 - 01/11 2015)	InterOpOct2015	InteropOct2015GWS
Sesto, Italy (14-19 Jun 2015)	InterOpJune2015	InterOpJune2015GWS
Banff, Canada (10-12 Oct 2014)	InterOpOct2014	InterOpOct2014GWS
Madrid, Spain (18-23 May 2014)	InterOpMay2014	InterOpMay2014GWS
Hawaii, USA (12-17 Sep 2013)	InterOpSep2013	InterOpSep2013GWS
Heidelberg, Germany (12-17 May 2013)	InterOpMay2013	InterOpMay2013DM
Sao Paulo, Brazil (22-26 Oct 2012)	InterOpOct2012	InterOpMay2013GWS
Urbana, USA (21-25 May 2012)	InterOpMay2012	InterOpOct2012GWS
Pune, India (17-21 Oct 2011)	InterOpOct2011	InterOpOct2011GWS
Naples, Italy (16-20 May 2011)	InterOpMay2011	InterOpMay2011GWS
Nara, Japan (7-11 Dec 2010)	InterOpDec2010	InterOpDec2010GWS
Victoria, Canada (17-21 May 2010)	InterOpMay2010	InterOpMay2010GWS
Garching, Germany(19-23 Nov 2009)	InterOpNov2009	InterOpNov2009GWS
Strasbourg, France(19-23 May 2009)	InterOpMay2009	InterOpMay2009GridAndWebServices
Baltimore, USA (Oct 2008)	InterOpOct2008	InterOpOct2008GridAndWebServices
Trieste, Italy (19-23 May 2008)	InterOpMay2008	InterOpMay2008GridAndWebServices
Cambridge, UK (27-28 Sep 2007)	InterOpSep2007	InterOpSep2007GridAndWebServices
Beijing, China (14-18 May 2007)	InterOpMay2007	InterOpMay2007GridAndWebServices
Moscow, Russia (18-21 Sep 2006)	InterOpSep2006	InteropSept2006GWS
Victoria, Canada (14-19 May 2006)	InterOpMay2006	InterOpMay2006GridAndWebServices
Madrid, Spain (6-7 Oct 2005)	InterOpOct2005	InterOpOct2005GridAndWebServices
Kyoto, Japan (16-20 May 2005)	InterOpMay2005	InterOpMay2005GridAndWebServices
Pune, India (27-29 Sept 2004)	InterOpSep2004	InterOpSep2004GridAndWebServices
Cambridge, Mass. USA (23-28 May 2004)	InterOpMay2004	InterOpMay2004GridAndWebServices
Strasbourg (16-17 Oct 2003)	InterOpOct2003	InterOpOct2003WebGrid
Cambridge, UK (12-16 May 2003)	InterOpMay2003	InterOpMay2003WebServices

Other Information

• Publishing in the VO
• AsynchronousActivityProposal
• Searchable NVO registry
• SOAP Services at JHU
• Web Services at CDS (and mirror at ADS)
• Testbed eSTAR Catalogue Broker

<!--
* Set ALLOWTOPICRENAME = TWikiAdminGroup
-->

...

-- BrianMajor - 2017-12-18