service oriented architecture

195-843: Service Oriented Architecture

Master of Information System Management

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.Material taken from IBM CMU Ref. Architecture Document

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 (S3) 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 ViewB u s i n e s s S e r v i c e s

A d m i s s i o n s O f f i c e

S t u d e n t

P a r t n e r

U n i v e r s i t y S t a f f

S e l f - S e r v i c e

W o r k p l a c e

O n l i n e

R e g i s t r a t i o n

A g e n t

W o r k p l a c e

S t u d e n t s

I n f o r m a t i o n

O n l i n e

E m p l o y e e

W o r k p l a c e

C o u r s e


O n l i n e

E l e c t r o n i c B u s i n e s s

G a t e w a y

E l e c t r o n i c B u s i n e s s

G a t e w a y

P r o s p e c t

B u s i n e s s

P a r t i c i p a n t sC h a n n e l s

E n t e r p r i s e

I n f o r m a t i o n S y s t e m s

R e g u l a t o r

P a r t n e r

W o r k p l a c e

P a r t n e r

W o r k p l a c e

A n a l y t i c sA n a l y t i c s

A n a l y t i c sA n a l y t i c s

V e n d o r / P a r t n e r

S y s t e m s

I n t e g r a t i o n ( E S B )

T e c h n i c a l

S e r v i c e s

T e x t

M e s s a g e

P h o n e P D A

F o r m s

E m a i l

B r o w s e r

S e r v i c e s

P r o c e s s

S e r v i c e s

V i s i b i l i t y

S e r v i c e s

O p t i m i z a t i o n

S e r v i c e s


S e r v i c e s

R e g i s t r a t i o n

A p p l i c a t i o n

F o l d e r

M a n a g e m e n t

C r e a t e S t u d e n t

A r c h i v e

S t u d e n t D a t a

A d m i s s i o n s &

R e c r u i t m e n t

S t u d e n t

F i n a n c i a l s

S t u d e n t

R e c o r d s

L e a r n i n g U n i t

M a n a g e m e n t

S u p p o r t

S e r v i c e s

S e c u r i t y S e r v i c e s S y s t e m s M g m t S e r v i c e s V i r t u a l i z a t i o n S e r v i c e s D a t a S e r v i c e s

O p e r a t i o n a l

D a t a


D a t a


D a t a


D a t a

PackageLegacy

External

I n f r a s t r u c t u r e

& T e c h n o l o g y

S e c u r i t y

S y s t e m s

M a n a g e m e n t

O n t o l o g y

I n d u s t r y

F a b r i c

P o l i c i e s

S t u d e n t

S e r v i c e s

S u i t e

F i n a n c i a l

P r o c e s s i n g

D o c u m e n t

M a n a g e m e n t

( F o l d e r w a v e )

S c h e d u l e

M a n a g e m e n t

( S c h e d u l e 2 5 )

B l a c k b o a r d

A p p l i c a n t s

W o r k p l a c e

A c a d e m i c A u d i t





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

I n t e r n e t

E x t e r n a l

U s e r A c c e s s E x t e r n a l

P r o x y

B u s i n e s s

P a r t n e r s

( U n i v e r s i t i e s ,

F e d . G o v t . e t c . )

S e r v i c e s G a t e w a y

I n t e r n a l

U s e r A c c e s s

( C h o r e o g r a p h y )

A p p l i c a t i o n s

( S I S , B l a c k b o a r d , e t c . )

E n t e r p r i s e

I n f o r m a t i o n S y s t e m

( O r a c l e F i n a n c i a l , H R e t c . )

S e c u r i t y P o l i c y

S

P r o t o c o l

F i r e w a l l

D o m a i n

F i r e w a l l

M a n a g e m e n t &

S e c u r i t y

S e c u r i t y

S e r v i c e s

S e r v i c e

R e g i s t r y


S e r v i c e s

D a t a W a r e h o u s e /

B u s i n e s s I n t e l l i g e n c e

D a t a b a s e s

F i r e w a l l

I n t e r n a l

P r o x y

W e b A p p l i c a t i o n

S e r v e r

E S B

P o r t a l

P r o c e s s

S e r v i c e s

S e r v i c e C o n s u m e r

S e r v i c e P r o v i d e r





S e r v i c e P r o v i d e r S e r v i c e P r o v i d e r





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…






• 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.






• 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.






• 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…






• 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

DecisionService

Facts

Results

Rules Engine

RulesRepository

Rules Management

SDK






• 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)






• 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…






• 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.






• 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






• 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…






Business Innovation & Optimization ServicesLayerBusiness design toolsTools include: IBM WebSphere Business Modeler Model to UML or BPEL Microsoft Visio MagicDraw Sun SeeBeyond eInsight Process managerBusiness rules managementTools include: IBM Websphere process server Drools Jboss Rules, etc..





Middleware View

Apps &

Info Assets

B u s i n e s s I n n o v a t i o n & O p t i m i z a t i o n S e r v i c e s

Development

Services

I n t e r a c t i o n S e r v i c e s P r o c e s s S e r v i c e s I n f o r m a t i o n S e r v i c e s

P a r t n e r S e r v i c e s B u s i n e s s A p p S e r v i c e s A c c e s s S e r v i c e s

I n t e g r a t e d

e n v i r o n m e n

t f o r d e s i g n

a n d

c r e a t i o n o f

s o l u t i o n

a s s e t s

M o n i t o r ,

m a n a g e

a n d s e c u r e

s e r v i c e s ,

a p p l i c a t i o n

s &

r e s o u r c e s

F a c i l i t a t e s b e t t e r d e c i s i o n - m a k i n g

w i t h r e a l - t i m e b u s i n e s s

i n f o r m a t i o n

E n a b l e s c o l l a b o r a t i o n

b e t w e e n p e o p l e ,

p r o c e s s & i n f o r m a t i o n

O r c h e s t r a t e a n d

a u t o m a t e b u s i n e s s

p r o c e s s e s

C o n n e c t w i t h t r a d i n g

p a r t n e r s

B u i l d o n a r o b u s t ,

s c a l e a b l e , a n d

s e c u r e s e r v i c e s

e n v i r o n m e n t

F a c i l i t a t e s i n t e r a c t i o n s

w i t h e x i s t i n g

i n f o r m a t i o n a n d

a p p l i c a t i o n a s s e t s

E S BF a c i l i t a t e s c o m m u n i c a t i o n b e t w e e n s e r v i c e s

IT Service

Management

I n f r a s t r u c t u r e S e r v i c e s

O p t i m i z e s t h r o u g h p u t ,

a v a i l a b i l i t y a n d p e r f o r m a n c e

M a n a g e s d i v e r s e

d a t a a n d c o n t e n t i n

a u n i f i e d m a n n e r

Apps &

Info Assets


Development

Services



I n t e g r a t e d

e n v i r o n m e n

t f o r d e s i g n

a n d

c r e a t i o n o f

s o l u t i o n

a s s e t s

M o n i t o r ,

m a n a g e

a n d s e c u r e

s e r v i c e s ,


s &

r e s o u r c e s









p r o c e s s e s


p a r t n e r s










IT Service

Management




Apps &

Info Assets

Apps &

Info Assets


Development

Services



I n t e g r a t e d

e n v i r o n m e n

t f o r d e s i g n

a n d

c r e a t i o n o f

s o l u t i o n

a s s e t s

M o n i t o r ,

m a n a g e

a n d s e c u r e

s e r v i c e s ,


s &

r e s o u r c e s









p r o c e s s e s


p a r t n e r s











IT Service

Management




M a n a g e s d i v e r s e

d a t a a n d c o n t e n t i n

a u n i f i e d m a n n e r





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 3.1S p e c i f i c a t i o nS p e c i f i c a t i o n

S p e c i f y

S e r v i c e s

8

S p e c i f y

S e r v i c e s

8

A n a l y z e

S u b - s y s t e m s

9

A n a l y z e

S u b - s y s t e m s

9

S p e c i f y

C o m p o n e n t s

1 0

S p e c i f y

C o m p o n e n t s

1 0

R e - f a c t o r

& R a t i o n a l i z e

S e r v i c e s

1 1

R e - f a c t o r


S e r v i c e s

1 1

R e a l i z a t i o nR e a l i z a t i o n

R e f i n e &

D e t a i l

C o m p o n e n t s

1 2

R e f i n e &

D e t a i l

C o m p o n e n t s

1 2

E s t a b l i s h

R e a l i z a t i o n

D e c i s i o n s

1 3

E s t a b l i s h

R e a l i z a t i o n

D e c i s i o n s

1 3

P e r f o r m

T e c h n i c a l

F e a s i b i l i t y

E x p l o r a t i o n

1 4

P e r f o r m

T e c h n i c a l

F e a s i b i l i t y

E x p l o r a t i o n

1 4

D e t a i l S O A

S o l u t i o n

S t a c k L a y e r s

1 5

D e t a i l S O A

S o l u t i o n

S t a c k L a y e r s

1 5

I m p l e m e n t a t i o nI m p l e m e n t a t i o n

C o n s t r u c t ,

G e n e r a t e &

A s s e m b l e

S e r v i c e s

1 6

C o n s t r u c t ,

G e n e r a t e &

A s s e m b l e

S e r v i c e s

1 6

E x e c u t e

U n i t T e s t

1 7

E x e c u t e

U n i t T e s t

1 7

E x e c u t e

I n t e g r a t i o n

& S y s t e m T e s t

1 8

E x e c u t e

I n t e g r a t i o n

& S y s t e m T e s t

1 8

D e p l o y m e n tD e p l o y m e n t

D e p l o y

S e r v i c e s

1 9

D e p l o y

S e r v i c e s

1 9

E x e c u t e

U s e r A c c e p t a n c e

T e s t

2 0

E x e c u t e

U s e r A c c e p t a n c e

T e s t

2 0

S o l u t i o n S t a r t u pS o l u t i o n S t a r t u p

I n i t i a t e

P r o j e c t

M a n a g e m e n t

A c t i v i t i e s

1

I n i t i a t e

P r o j e c t

M a n a g e m e n t

A c t i v i t i e s

1

C o n d u c t

M e t h o d

A d o p t i o n

W o r k s h o p

3

C o n d u c t

M e t h o d

A d o p t i o n

W o r k s h o p

3

S e l e c t

S o l u t i o n

T e m p l a t e s a n d

P a t t e r n s

2

S e l e c t

S o l u t i o n

T e m p l a t e s a n d

P a t t e r n s

2

I d e n t i f i c a t i o nI d e n t i f i c a t i o n

D e c o m p o s e

D o m a i n s

5

D e c o m p o s e

D o m a i n s

5

C o n d u c t

G o a l - S e r v i c e

M o d e l i n g

4

C o n d u c t

G o a l - S e r v i c e

M o d e l i n g

4

R e - f a c t o r


S e r v i c e s

7

R e - f a c t o r


S e r v i c e s

7

A n a l y z e

E x i s t i n g

A s s e t s

6

A n a l y z e

E x i s t i n g

A s s e t s

6

S e r v i c e M o d e l

B u s i n e s s D o m a i n s & P r o c e s s e s I n S c o p e

S e r v i c e M o d e l

_ F u n c ti o n a l A r e a

_ P r o c e s s

_ I n fo r m a ti o n

_ R u l e s

_ V a r i a ti o n s

_ S e r v i c e L i t m u s T e s t

_ C o m p o s i t i o n

_ F l o w s

_ O p e r a t i o n s

_ M e s s a g e s

_ N F R s

_ S e r v i c e L i t m u s T e s t

_ C u s t o m i z e D e l i v e r y

M e t h o d

Service Oriented Modeling and Architecture