How To Write A Soa Blog Post

(1)

SOA-Governance: Order vs. Chaos?

Stefan Tilkov | innoQ Deutschland | stefan.tilkov@innoq.com

1 Dienstag, 11. November 2008

(2)

‣

Technologie-Beratung

‣

Fokus auf Architekturen für

Individualsoftware und

Systemintegration

‣

Seit 1998 in CH, Seit 1999 in D

‣

ca. 50 Mitarbeiter

‣

MDA seit 2002

‣

Web Services und SOA seit 2003

‣

Entwicklung in Java/J2EE, Java EE, Ruby on Rails

‣

http://www.innoq.com

innoQ

(3)

Stefan Tilkov

‣

Geschäftsführer & Principal Consultant,

innoQ Deutschland GmbH

‣

stefan.tilkov@innoq.com

‣

http://www.innoq.com/blog/st/

‣

Herausgeber (m. G. Starke)

“SOA-Expertenwissen”, dpunkt

http://www.soa-expertenwissen.de

‣

Fachl. Leiter SOA-Lehrgang Euroforum

‣

Chefredakteur InfoQ SOA Community

(4)

governance |

gəvərnəns

|

(5)

governance

¦ gəvərnəns¦

noun

the action or manner of governing :

a more responsive

system of governance will be required.

archaic

sway; control :

what, shall King Henry be a pupil

still,

under

the surly Gloucester's

governance

?

ORIGIN Middle English : from Old French, from

governer

(see

govern

).

(6)

http://www.phac-aspc.gc.ca/vs-sb/voluntarysector/glossary.html

The act of affecting government and

monitoring (through policy) the long-term

strategy and direction of an organization. In

general, governance comprises the traditions,

institutions and processes that determine

how power is exercised, how citizens are

given a voice, and how decisions are made on

issues of public concern.

(7)

http://www.skywaysoftware.com/resources_terminology.htm

In the context of SOA, governance defines

the model to ensure optimal reuse of services

and enforcement of corporate policies (eg,

business design, technical design, and

application security).

(8)

SOA Governance is the process, model and

organization that ensures compliance to the

service-oriented architecture as defined for

the company.

(9)

Starting points

(10)

Starting points

Top-down

Strategic

Expensive

In advance

(11)

Starting points

Top-down

Strategic

Expensive

In advance

Bottom-up

Technical

Expensive

After the fact

(12)

Starting points

Top-down

Strategic

Expensive

In advance

Bottom-up

Technical

Expensive

After the fact

YAGNI

(13)

Starting points

Top-down

Strategic

Expensive

In advance

Bottom-up

Technical

Expensive

After the fact

YAGNI

JABOWS

(14)

Starting points

Top-down

Strategic

Expensive

In advance

Bottom-up

Technical

Expensive

After the fact

YAGNI

JABOWS

(You ain’t gonna need it)

(15)

Starting points

Top-down

Strategic

Expensive

In advance

Bottom-up

Technical

Expensive

After the fact

YAGNI

JABOWS

(You ain’t gonna need it)

(Just a bunch of web services)

(16)

3 Goals:

(17)

1

.

Architectural Control

(18)

2

.

Subsidiarity Principle

http://en.wikipedia.org/wiki/Subsidiarity

(19)

3

.

Knowledge

(20)

new tasks

new roles

(21)

Roles

(22)

Roles

(23)

Existing Organization

CIO

CEO

Corporate Quality

& Processes

CFO

VP LoB 1

VP LoB 2

Corporate

Strategy

Development

Operations

(24)

Existing Organization

CIO

CEO

Corporate Quality

& Processes

CFO

VP LoB 1

VP LoB 2

Corporate

Strategy

_SOA

Domain Architect

Development

Operations

(25)

Existing Organization

CIO

CEO

Corporate Quality

& Processes

CFO

VP LoB 1

VP LoB 2

Corporate

Strategy

_SOA

Domain Architect

SOA

Platform Architect

Development

Operations

(26)

Existing Organization

CIO

CEO

Corporate Quality

& Processes

CFO

VP LoB 1

VP LoB 2

Corporate

Strategy

_SOA

Domain Architect

SOA

Platform Architect

Development

Operations

Business Service

Owner

(27)

Existing Organization

CIO

CEO

Corporate Quality

& Processes

CFO

VP LoB 1

VP LoB 2

Corporate

Strategy

_SOA

Domain Architect

SOA

Platform Architect

Development

Operations

Business Service

Owner

Technical Service

Owner

(28)

Existing Organization

CIO

CEO

Corporate Quality

& Processes

CFO

VP LoB 1

VP LoB 2

Corporate

Strategy

_SOA

Domain Architect

SOA

Platform Architect

Development

Operations

Business Service

Owner

Technical Service

Owner

SOA

Governance Board

(29)

Roles & Lifecycle

(30)

Governance Structure

(31)

Governance Structure

(32)

Governance Structure

(33)

Governance Structure

(34)

Governance Structure

(35)

Governance Structure

(36)

Standards & Products

(37)

UDDI

‣

420-page specification

‣

Finding and maintaining (meta-)model objects

Publication



save_binding



save_business



save_service



save_tModel



delete_binding



delete_business



delete_publisherAssertions



delete_service



delete_tModel



add_publisherAssertions



set_publisherAssertions



get_assertionStatusReport



get_publisherAssertions



get_registeredInfo

Inquiry



find_binding



find_business



find_relatedBusinesses



find_service



find_tModel



get_bindingDetail



get_businessDetail



get_operationalInfo



get_serviceDetail



get_tModelDetail

(38)

News about UDDI

(39)

Registry vs. Repository

Registry

metadata

references

(runtime focus)

Repository

metadata

data

(governance focus)

(40)

Registry vs. Repository

Registry

metadata

references

(runtime focus)

Repository

metadata

data

(governance focus)

UDDI

(41)

Registry vs. Repository

Registry

metadata

references

(runtime focus)

Repository

metadata

data

(governance focus)

UDDI

?

(42)

The Vendor Landscape

?

_Acquisition

OEM License

(43)

Reg/Rep Products

Vendor(s)

Product

HP

Mercury

Systinet

Systinet 2

http://www.systinet.com

Software AG

Fujitsu

Infravio

webMethods

CentraSite/X-Registry

http://www.softwareag.com/Corporate/products/centrasite/

BEA

Flashline

AquaLogic Registry Repository (ALER)

http://www.bea.com/framework.jsp?CNT=index.jsp&FP=/content/products/aqualogic/

registry_repository/

IBM

WebSphere Service Registry and Repository (WSRR)

_{http://www-306.ibm.com/software/integration/wsrr/}

(44)

UDDI

(contd.)

‣

UDDI could be greatly simplified by using plain

HTTP

‣

It would no longer be protocol-independent -

but who cares?

‣

Atom (Syndication Format & Protocol) are a

great match

‣

Approach taken in Mule Galaxy, WSO2 Registry,

HP Systinet 2

See: http://www.xml.com/pub/a/ws/2002/02/06/rest.html?page=2

(45)

Sad Truths about

Reg/Rep Solutions

‣

You will have more than one repository

‣

You will have more than one kind of metadata

‣

Products are too focused on web

services-based SOA only

‣

Extensibility is key requirement and key problem

(46)

Governance & Modeling

(47)

What is a repository?

‣

It holds data

‣

It holds metadata

‣

Anything structured should be storable

‣

It should support many processes and tasks

‣

It should be open and decoupled

‣

It should support arbitrary queries

(48)

In other words …

(49)

Who builds the model?

Your vendor

(50)

Who builds the model?

vs.

Your vendor

(51)

Who builds the model?

You

vs.

Your vendor

(52)

Model

Repository

SOA Governance

Repository

Runtime

Registry

Modeling and SOA Governance

(53)

Model

Repository

SOA Governance

Repository

Runtime

Registry

Modeling and SOA Governance

Interface Descriptions

Datatypes/Schemas

(54)

Model

Repository

SOA Governance

Repository

Runtime

Registry

Modeling and SOA Governance

Interface Descriptions

Datatypes/Schemas

Service Status

Schemas

(55)

Model

Repository

SOA Governance

Repository

Runtime

Registry

Modeling and SOA Governance

Interface Descriptions

Datatypes/Schemas

Service Status

Schemas

Usage Information

Response Times

Throughput

(56)

Model

Repository

SOA Governance

Repository

Runtime

Registry

Modeling and SOA Governance

Interface Descriptions

Datatypes/Schemas

Service Status

Schemas

Usage Information

Response Times

Throughput

Stability Info

Critical Areas

(57)

Key Connections

WSDL portType

XML Schema Types

UML Interfaces

UML Classes

WSDL service

Physical Endpoint

Governance

Development

Runtime

(58)

“Meta” Integration Examples

1. Transform UML to WSDL/XSD

2. Import WSDL/XSD to UML

3. Use UML to model (proprietary) repository

structure

4. Transform (proprietary) enterprise model to

vendor repository structure

5. Merge UML and XSD modeling

(59)

Summary

‣

Develop a consistent process

across

modeling

and governance tasks

‣

Don’t try to do everything at once – start small

‣

Accept your responsibility for defining your own

model and process