Rochester Institute of TechnologyRochester Institute of Technology05:46:40 Service Oriented Cyberinfrastructure Lab, http://blackrose02.rit.edu 1

Grid Portals

Fugang Wang

April 29

http://cyberaide.googlecode.com/svn/trunk/lectures/GridPortal.ppt

05:46:40 Service Oriented Cyberinfrastructure Lab, http://blackrose02.rit.edu 2

Outline

• Web portal• Portal related standards and technologies

• Java Portlet Definition Standard (JSR168) • Web Services for Remote Portlets V1 (WSRPv1)• Web2.0 portal

• Grid portals

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Web Portal

• Portal: “An entrance or a means of entrance”; “A website considered as an entry point to other websites, often by being or providing access to a search engine” – American heritage dictionary• Characteristics of web portal

• Multiple sites/functionalities/services• Single entrance/Single Sign-On• Consistent look and feel• Personalization

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Web Portal

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Web Portal

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Web Portal

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Web Portal Standards

• Java Portlet Definition Standard (JSR168)• Portal• Portlet• Portlets container

Portlets

Container

Login

Info

FAQ

Welcome

Server

Portlet Window

Portlet Fragment

……

Portal S

erver

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Web Portal Standards

• Portlet mode• View/Edit/Help• Custom

• Portlet request handling• processAction/render

• Portlet request• ActionRequest/RenderRequest

• Portlet Response• ActionResponse/RenderResponse

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Web Portal Standards

• Web Services for Remote Portlets Ver1 (WSRP v1)

• Defines web services interface to interact with remote portlets

• Reference implementation• Apache Pluto – JSR168• Apache WSRP4J – WSRP• uPortal, OpenPortal

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Web Portal Standards

• Emerging standards• JSR286 – Version 2.0 of the Java portlet specification• WSRP ver2• Would support Web2.0 features like Ajax, REST

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Web 2.0 Portal

• Based on Web2.0 technologies• Asynchronous JavaScript and XML (Ajax)• Representational State Transfer (REST) • Atom and RSS• Mashup

• Advantages• More flexible to aggregate info• More flexible to present info in client side• User experience

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Web 2.0 Portal

http://myiosoft.com/products/AjaxPortal/demo/

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Web 2.0 Portal

http://www.netvibes.com/

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Grid Portal

• Share the same features as typical portals• Provide a uniform environment for Grid users to interact with Grid services.• Basic functionalities: authenticate, submit jobs and monitor jobs execution status• Other functionalities: client side workflow composite, Grid information services, and collaboration environment.

• Need to pay more attention on user authentication and authorization

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Grid Portal

• Gridsphere portal framework• http://www.gridsphere.org/• 100% JSR168 compliant• Easy to develop and integrate new porlets• Easy to create customized portal layouts• Built-in support for Role Based Access Control• Data persistence using Hibernate• Localization• Open source

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Grid Portal

•The Open Grid Computing Environments Portal and Gateway Toolkit (OGCE Portal)

• http://www.collab-ogce.org/• JSR168 compatible portlets• Grid credential management• Secure remote file management and code execution• Views of Grid Information service (GPIR)• Workflow composers (XBaya)• Open source

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Grid Portal

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Grid Portal

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Grid Portal

• A planed Web2.0 based Grid portal• User authentication and delegation, by using MyProxy proxy credential• Job submission and execution status monitor• Grid Information services integration, Qbets for example• Workflow composition based on Karajan workflow language• Elementary collaboration environment

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Summary and Conclusion

• Web portal is a convenient way for user to access web sites/services by providing a uniform user interface

• JSR168 and WSRPv1 are two mainly adopted standards, though they are about to obsolete

• Web 2.0 technologies provide alternative approach to construct portals

• Grid portal provides an easy way for Grid users to access Grid services

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References• Java CoG Kit. http://www.cogkit.org/• Globus Toolkit. http://www.globus.org/toolkit/• JSR 168: Portlet Specification. http://www.jcp.org/en/jsr/detail?id=168• OASIS Web Services for Remote Portlets (WSRP). http://www.oasis-

open.org/committees/tc_home.php?wg_abbrev=wsrp• Yahoo! Web page. http://www.yahoo.com• Myrit portal. http://my.rit.edu• Myio AjaxPortal. http://myiosoft.com/products/AjaxPortal/demo/• Netvibes Web page. http://www.netvibes.com/• Gridsphere portal framework. http://www.gridsphere.org/• The Open Grid Computing Environments Portal and Gateway Toolkit

(OGCE Portal). http://www.collab-ogce.org/