Cyberaide JavaScript: A JavaScript Commodity Grid KitGregor von Laszewski

Fugang WangNov.16 2008

http://www.cyberaide.org

Outline

• Approaches to access Grid- Infrastructure specific tools; middleware; portal

• Web 2.0 technologies applied to Grid portal- JSR 168 portal- Ajax, RESTful, RSS/ATOM, Mashup- A comparison

• The Cyberaide JavaScript framework- Introduction and architecture- A reusable JavaScript library; A portal

• Conclusion and discussion

Approaches to access Grid

• Grid Infrastructure- Condor, PBS, LSF, SGE- Globus, UNICORE, EGEE, Legion

• Middleware/Upperware- CoG Kit- Gridway- Gridshell

• Grid Portal- Teragrid portal, Gridsphere, OGCE

Portal technologies – JSR168

• Java Portlet Specification (JSR168)Portlets

Container

Login

Info

FAQ

Welcome

Server

Portlet Window

Portlet Fragment

Portal Server

Portal technologies – Web 2.0

• Web 2.0 technologies applied to web portals- Web 2.0, a buzz word. “Web as platform”?- Asynchronous JavaScript and XML (Ajax)- Representational State Transfer (REST)- Mashup- Atom and RSS

Portal technologies – Web 2.0

……

• Ajax- XML as data interchange medium- Asynchronous communication with server side- XHTML, CSS, and JavaScript to manipulate and render DOM

components- Decrease user waiting time and increase user experience

Static pages, CGI, ServletStatic pages, CGI, Servlet

Web pageWeb page WebBrowser

WebServer

Ajax engineAjax engine

JS code, CSS, libraries, web resources

JS code, CSS, libraries, web resources

Rendered Web pageRendered Web page

Portal technologies – Web 2.0

• REST/RESTful web service- Roy Fielding’s doctoral dissertation in 2000- Resource = functionality + state- Unique addressable through URI for each resource- Use HTTP verbs such as GET, POST to do the CRUD operations

(Create, Read, Update, Delete)- Eliminating the use of additional message layer such as SOAP

or session maintaining cookies- Simplicity is beauty• RSS and Atom- Web content publishing- Publish “feed”; Subscribe and read- Aggregating

Portal technologies – Web 2.0

• Mashup- Data from multiple sources- Mingle and combine- Presented in a new perspective

Site ASite A Site BSite B Site CSite C

Web ServiceWeb Service

Web ClientWeb Client

Portal technologies – Web 2.0

• Mashup applied to JavaScript Grid Portal- Shows mashup happens both in server side and client side

Teragrid Host ATeragrid Host A Teragrid Host BTeragrid Host B Teragrid REST Info service

Teragrid REST Info service

JavaScript CoG Kit serviceJavaScript CoG Kit service

JavaScript API & PortalJavaScript API & Portal

Portal approaches – a comparison

• JSR168 Portal– Generate markup

segments for each portlet and assembly them into a full page

– Info aggregated at server side

– Portlets displayed separately

– Relatively old technology and is to be replaced with newer standard (JSR286)

• Web 2.0 Portal– Combine raw data from

different site/web services– Content aggregation can

happen in server side or client side

– Could combine data from different source and present in a totally new way

– Web 2.0 technologies used to provide better user experience

A Web 2.0 Grid portal and reusable JavaScript CoG Kit

• Multi-tier SOA based framework• Grid services are exposed through JavaScript

library in client side for those web based Grid application developers• A generic purpose Grid portal built upon the

JavaScript CoG Kit enable access to Teragrid through web browser

System architecture

JavaScript Library enables Grid access

• JavaScript library to consume Java based web services while providing a higher level abstraction for web based Grid application developers

• JavaDoc style documentation-

https://lily01.rit.edu:8443/grid/jscogdoc/jsdoc/index.html

- Subject to change since it is still under active development

• Reusable to construct Grid portal or other domain specific scientific gateways upon it

The portal

Teragrid Information services

Job Management

File Transfer

Conclusions and Discussion

• Road to Grid- Abstraction and reuse- More user-friendly and lower barrier- Less user involved setup and configuration- Architecture gets more complicated- Hide more complexity behind the “cloud”• Trends- Service Oriented Architecture (SOA) / Web services- Software As A Service (SAAS)- Web application / Rich Internet Application- Cloud• Discussion?

• http://www.cyberaide.org• laszewski@gmail.com

Thanks!

Any questions?

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• Myrit portal. http://my.rit.edu• Teragrid user portal. http://www.teragrid.org• Gridsphere portal framework. http://www.gridsphere.org/• The Open Grid Computing Environments Portal and Gateway Toolkit (OGCE

Portal). http://www.collab-ogce.org/• D. Gannon, J. Alameda, O. Chipara, M. Christie, V. Dukle, L. Fang, M. Farrellee,

G. Kandaswamy, D. Kodeboyina, S. Krishnan, C. Moad, M. Pierce, B. Plale, A. Rossi, Y. Simmhan, A. Sarangi, A. Slominski, S. Shirasuna, and T. Thomas, "Building grid portal applications from a web service component architecture," Proceedings of the IEEE, vol. 93, no. 3, pp. 551-563, 2005. [Online]. Available: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1398010

References – cont’d• Thomas, M., Burruss, J., Cinquini, L., Fox, G., Gannon, D., Glilbert, I.,

von Laszewski, G., Jackson, K., Middleton, D., Moore, R., Pierce, M., Plale, B., Rajasekar, A., Regno, R., Roberts, E., Schissel, D., Seth, A., Schroeder, W.: Grid portal architectures for scientific applications. J. Phys. 16, 596–600 (2005)

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• G. Singh, E. Deelman, G. Mehta, K. Vahi, M. Su, B. Berriman, J. Good, J. Jacob, D. Katz, A. Lazzarini, K. Blackburn, S. Koranda, "The Pegasus Portal: Web Based Grid Computing", The 20th Annual ACM Symposium on Applied Computing, Santa Fe, NM, Mar. 13 -17, 2005.