Service Oriented Architecture Lecture 5 High Level Reference

Service Oriented Architecture Lecture 5: High Level Reference Architecture Part 2 95 -843: Service Oriented Architecture Master of Information System Management Material taken from IBM CMU Ref. Architecture Document 1

High Level SOA Reference Architecture • These slides outline the document provide by IBM to CMU to guide CMU’s development of a Student Service Suite (S 3) SOA. • Work on this documented was completed in March of 2008. • In this course, we will use this document as a case study in SOA design. • See Blackboard’s Course Documents section. 95 -843: Service Oriented Architecture Master of Information System Management Material taken from IBM CMU Ref. Architecture Document 2

Outline • • • Enterprise view IT Systems View Middleware view Solution stack view SOMA 3. 1 95 -843: Service Oriented Architecture Master of Information System Management Material taken from IBM CMU Ref. Architecture Document 3

Reference Architecture Enterprise View • Business participants from both inside and outside the organization • Delivery channels • Business services represent services the enterprise wants to expose to customers, partners and internal users (identified by SOMA) • EIS bulk of data and logic • ESB routing, protocol mediation, and transformation 95 -843: Service Oriented Architecture Master of Information System Management Material taken from IBM CMU Ref. Architecture Document 4

Enterprise View 95 -843: Service Oriented Architecture Master of Information System Management Material taken from IBM CMU Ref. Architecture Document 5

Reference Architecture IT Systems View (1) • Technical overview of the architecture • Business as usual elements plus SOA related elements • Gateways (security & manageability) • ESB (adapters, queues, brokers) • Registries (several types) Service registry for service metadata LDAP registry for identities, access policies, certificates, configuration 95 -843: Service Oriented Architecture Material taken from 6 information Master of Information System IBM CMU Ref. Architecture Document Management

Reference Architecture IT Systems View (2) • Information services to provide information to consumers in a standard format despite how or where it might be stored • Process Services provide the ability to compose services together and choreograph their behavior to carry out business processes • Security Services are enhanced to meet SOA requirements • SOA related development tools are important but not shown 95 -843: Service Oriented Architecture Master of Information System Management Material taken from IBM CMU Ref. Architecture Document 7

IT Systems View 95 -843: Service Oriented Architecture Master of Information System Management Material taken from IBM CMU Ref. Architecture Document 8

Reference Architecture Middleware View (1) • Business Application Services are at the core (fundamental & repeatable business tasks & identified by SOMA) • Tool support for this layer: Web. Sphere app server JBOSS, Glassfish, etc… 95 -843: Service Oriented Architecture Master of Information System Management Material taken from IBM CMU Ref. Architecture Document 9

Reference Architecture Middleware View (2) • Access Services Layer Dedicated to integrating existing applications and functions into an SOA. • Tool Support of this layer: Web. Sphere Adapters BEA adapters Sun See. Beyond Adapters, … • Adapters implemented with J 2 EE Connector Architecture (JCA) 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 10 IBM CMU Ref. Architecture Document

Some Notes on JCA • An EIS includes ERP systems, legacy systems, mainframe database and transaction processing systems. • A resource adapter is written for the EIS. • The adapter must communicate with the container and clients. • JCA defines system contracts between the application server and resource adapters. • JCA defines the client API of the resource adapter. • A resource adapter is analogous to a JDBC driver. 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 11 IBM CMU Ref. Architecture Document

Reference Architecture Middleware View (3) • Partner Services Layer Can be viewed as a special case of interaction services - representing the integration of external entities • Government services • Other higher education services, etc. 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 12 IBM CMU Ref. Architecture Document

Reference Architecture Middleware View (4) • Interaction Services Layer - Captures the logic of presentation to the entities external to CMU - Web Frameworks, e. g. , struts, JSF, Ruby on Rails, provide a configurable sequence flow • Tool Support for this layer: IBM Web. Sphere Portal Server JBOSS Portal Vignette (industry leading implementation of JSR-168 Web Services for Remote Portlet WSRP) Apache Jet. Speed, JSF, Spring Framework, 95 -843: Service Oriented Architecture Material taken from etc… Master of Information System 13 IBM CMU Ref. Architecture Document Management

Reference Architecture Middleware View (5) • Process Services Layer Captures process flows and business rules. • Tool Support: - IBM Web. Sphere Process Server (SCA and BPEL) - Apache Tuscany (SCA, SDO and BPEL) - Active BPEL - Glassfish - Oracle Business Rules using RETE rules engine - IBM bought ILOG and now has a rules engine - Redhat DROOLS 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 14 IBM CMU Ref. Architecture Document

Business Process Using a Rules Engine Business Process Flow Rules centralize knowledge Facts Decision Service Results Rules Engine 95 -843: Service Oriented Architecture Master of Information System Management Rules Management SDK Rules Repository Material taken from 15 IBM CMU Ref. Architecture Document

Reference Architecture Middleware View (6) • Information Services Layer Provide access to the persistent data of the business Provide access to business intelligence • Tool support includes: Oracle RDBMS IBM DB 2 Apache Derby My. SQL Ingres DBMS (open source) 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 16 IBM CMU Ref. Architecture Document

Reference Architecture Middleware View (7) • ESB delivers all interconnectivity capabilities • Transport services, Event services and Mediation services (routing and transformation, logging, auditing) • The ESB is a silent partner, transparent to services • Tool Support includes: IBM Web. Sphere ESB TIBCO Active. Matrix JBOSS ESB Apache Service. Mix, etc… • Registries are included in this layer. • Tools include: IBM Web. Sphere Service Registry and Repository BEA Aqua. Logic Registry and Repository UDDI) 95 -843: Service Oriented Architecture Material taken from etc… Master of Information System Management 17 IBM CMU Ref. Architecture Document

Reference Architecture Middleware View (8) • • • Development Service Layer Business analysts need modeling tools. Software architects need to model data, flows, and system interactions. Software developers need to build business logic. Tools include: IBM Rational Software Architect IBM Rational Application Developer Eclipse Web Tools Platform Netbeans IDE (J 2 EE, Ruby, . . ) BEA workshop for Web. Logic Jboss developer suite, etc… BPEL Source Editors IBM Web. Sphere Integration Developer Eclipse BPEL designer plug-in Netbeans, etc. Oriented Architecture 95 -843: Service Master of Information System Management Material taken from 18 IBM CMU Ref. Architecture Document

Reference Architecture Middleware View (9) • • IT Services Management Layer monitors and manages deployed services. Tools include: IBM Web. Sphere Business Monitor BEA Aqua. Logic BPM Sun See. Beyond, etc… Infrastructure Services Layer (Security, efficiency, integrity, balanced workload, etc. . ) Tools include: IBM Tivoli Composite Application Manager (ITCAM) IBM Tivoli Identity Manager (TIM) IBM Tivoli Access Manager (TAM) - security policies and authorization BEA Aqua. Logic Enterprise Security Sun Java System Access Manager 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 19 IBM CMU Ref. Architecture Document

Reference Architecture Middleware View (10) • Infrastrcture Services Layer (continued) User Registries: Tools Include: IBM Tivoli Directory Server (LDAP-compliant) Microsoft Active Directory (LDAP-compliant) Novel e. Directory (LDAP-compliant) Open. LDAP, etc… 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 20 IBM CMU Ref. Architecture Document

Reference Architecture Middleware View (11) Business Innovation & Optimization Services Layer Business design tools Tools include: IBM Web. Sphere Business Modeler Model to UML or BPEL Microsoft Visio Magic. Draw Sun See. Beyond e. Insight Process manager Business rules management Tools include: IBM Websphere process server Drools Jboss Rules, etc. . 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 21 IBM CMU Ref. Architecture Document

Middleware View 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 22 IBM CMU Ref. Architecture Document

Solution Stack View 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 23 IBM CMU Ref. Architecture Document

SOMA(1) • The Service Oriented Modeling and Architecture methodology - is used to identify candidate services. - provides guidance on the degree of service granularity. - may be compared with the OASIS SOA Adoption Blueprint - or Microsoft Motion 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 24 IBM CMU Ref. Architecture Document

SOMA 3. 1 Service Oriented Modeling and Architecture 95 -843: Service Oriented Architecture Master of Information System Management Material taken from 25 IBM CMU Ref. Architecture Document