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Service Oriented Architecture

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    Service Oriented Architecture Service Oriented Architecture Presentation Transcript

    • Service Oriented Architecture Lecture 5: High Level Reference Architecture Part 2
    • 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.
    • Outline
      • Enterprise view
      • IT Systems View
      • Middleware view
      • Solution stack view
      • SOMA 3.1
    • 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
    • Enterprise View
    • 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
      • information
    • 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
    • IT Systems View
    • Reference Architecture Middleware View (1)
      • Business Application Services are at the core (fundamental & repeatable business tasks & identified by SOMA)
      • Tool support for this layer:
      • WebSphere app server
      • JBOSS, Glassfish, etc…
    • Reference Architecture Middleware View (2)
      • Access Services Layer
      • Dedicated to integrating existing applications and functions into an SOA.
      • Tool Support of this layer:
      • WebSphere Adapters
      • BEA adapters
      • Sun SeeBeyond Adapters,…
      • Adapters implemented with J2EE Connector Architecture (JCA)
    • 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.
    • 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.
    • 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 WebSphere Portal Server
      • JBOSS Portal
      • Vignette (industry leading implementation of JSR-168 Web Services for Remote Portlet WSRP)
      • Apache JetSpeed, JSF, Spring Framework, etc…
    • Reference Architecture Middleware View (5)
      • Process Services Layer
      • Captures process flows and business rules.
      • Tool Support:
      • - IBM WebSphere 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
    • Business Process Using a Rules Engine
      • Business Process Rules centralize
      • Flow knowledge
      Decision Service Facts Results Rules Engine Rules Repository Rules Management SDK
    • 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 DB2
      • Apache Derby
      • MySQL
      • Ingres DBMS (open source)
    • 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 WebSphere ESB
      • TIBCO ActiveMatrix
      • JBOSS ESB
      • Apache ServiceMix, etc…
      • Registries are included in this layer.
      • Tools include:
      • IBM WebSphere Service Registry and Repository
      • BEA AquaLogic Registry and Repository UDDI)
      • etc…
    • 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 (J2EE, Ruby,..)
      • BEA workshop for WebLogic
      • Jboss developer suite, etc…
      • BPEL Source Editors
      • IBM WebSphere Integration Developer
      • Eclipse BPEL designer plug-in
      • Netbeans, etc.
    • Reference Architecture Middleware View (9)
      • IT Services Management Layer monitors and manages deployed services.
      • Tools include:
      • IBM WebSphere Business Monitor
      • BEA AquaLogic BPM
      • Sun SeeBeyond, 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 AquaLogic Enterprise Security
      • Sun Java System Access Manager
    • 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 eDirectory (LDAP-compliant)
      • OpenLDAP, etc…
    • Reference Architecture Middleware View (11)
      • Business Innovation & Optimization Services
      • Layer
      • Business design tools
      • Tools include:
      • IBM WebSphere Business Modeler
      • Model to UML or BPEL
      • Microsoft Visio
      • MagicDraw
      • Sun SeeBeyond eInsight Process manager
      • Business rules management
      • Tools include:
      • IBM Websphere process server
      • Drools
      • Jboss Rules, etc..
    • Middleware View
    • Solution Stack View
    • 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
    • SOMA 3.1 Service Oriented Modeling and Architecture