Copyright 2005 Digital Enterprise Research Institute. All rights reserved.

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Service Oriented Architecture for Distributed Identity Management

System

Adam Gzella

Outline

• Scenario• SOA as a solution• REST vs. SOAP• Final system architecture• System perspectives

Take-away message (motto)

• Main goal is to help people with multiple credentials problem and complicated registration process.

• Achieved by simple, universal identity management system:– D-FOAF extended with SOA.D-FOAF extended with SOA.

Scenario

• Alice registered to the travel.comtravel.com easily (possibly with FOAF profile)

• then she logs to the service and manage the profile

Alicetravel.comtravel.com FOAFRealmFOAFRealm

FOAF

login();

Scenario

• Alice logs into music.com and games.com without new registration

Alice

travel.comtravel.com FOAFRealmFOAFRealm

music.commusic.com FOAFRealmFOAFRealm

games.comgames.com FOAFRealmFOAFRealm

D-FOAFD-FOAF

Scenario

• Alice uses lot more various services (build with varius languages) with the same credentials.

• How to achieve this? How to achieve this? • How to make D-FOAF popular - solve multiple How to make D-FOAF popular - solve multiple

credentials problem?credentials problem?• Separate implementations or unified service

access method?

MobilesMobiles

JavaJava

PHPPHP

.Net.Net

D-FOAFD-FOAF??

Scenario

• Alice uses lot more various services with the same credentials.

Alice

travel.comtravel.com FOAFRealmFOAFRealm

music.commusic.comFOAFRealmFOAFRealm

games.comgames.com

FOAFRealmFOAFRealm

D-FOAFD-FOAF

movies.commovies.com

fun.comfun.com

sport.comsport.com

pets.compets.com

SOASOA(REST)(REST)

SOASOA(REST)(REST)

SOASOA(REST)(REST)

Why SOA?

• Fully Web oriented– FOAFRealm/D-FOAF is

Web appliaction

• Language independent• Platform independent

Firewall

SOASOASOASOA

LinuxLinuxLinuxLinux

C/C++C/C++C/C++C/C++

JMEJMEJMEJME

WindowsWindowsWindowsWindows

JEEJEEJEEJEE

.Net.Net.Net.NetPHPPHPPHPPHP

SOA Implementation – REST vs SOAP

• Why REST was selected?– Resource oriented.– Semantic Web compilant (URI, RDF)– Real Web utilisation (HTTP)– Simplicity and clearness

??

REST SOA - Example

FOAFRealmFOAFRealmSOASOA

(REST)(REST)Alice RDF

GET http://foafrealm.org/soa/alice@exmpl.org/nickPOST http://foafrealm.org/soa/alice@exmpl.org/nick

RDF(with new nick)

(with authentication information)

Final system

• Universal Identity Management System– JEE, PHP, .Net, JME implementations– Backward compatibility

• In wider scope: – solution for multiple credentials problem.

Final system – perspectives

• Lot of possible future implementations:– next version of JeromeDL (semantic digital libraries)– DigiMe– MarcOnt Portal – Didaskon

• Extending SOA to other FOAFRealm modules, like SSCF (Social Semantic Collaborative Filtering)

Adam Gzellaadam.gzella@deri.org

National University of Ireland, GalwayDigital Enterprise Research Institute