Impact Analysis

Web Service and Cloud Integrations

GraphConnect London, 19/11/2013

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SOFTWARE INTEGRATION

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Integrating software

CUSTOMPOINT-TO-POINT

INTEGRATION

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Integrating software

STANDARDS-BASEDPOINT-TO-POINT

INTEGRATION

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Integrating software

SERVICE-ORIENTEDINTEGRATION

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Integrating software

IMPACT OF CHANGE?

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INTEGRATION THROUGH WEB SERVICES

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What are (Web) Services?• Services

– Encapsulate • Business logic• Data logic

– Encourage code reuse– Are integration building blocks

• Service Parts– Implementation– Interface– Contract

Business logic Data logic

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Service Oriented Architecture• Collaboration of many

services• Business process automation• Composite services• Cloud services

THIS LOOKS PRETTY

GRAPHY

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The functional SOA Graph

The “soft stuff”

Who uses what, when and how?

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The functional SOA Graph

Business process

Business activity

Service

Contract

Interface

Implementation

User

Service Usage Agreement

Service Level Agreement

Actor

:PLAYS_ROLE

:USES_SERVICE

:ACTS_IN:CONTAINS_ACTIVITY

:USES_SERVICE

:USES_SERVICE:OBEYS

:DEFINES_SLA

:DEFINES_ITF

:HAS_ITF

:HAS_CONTRACT :HAS_IMPL

:SUPPORTS_ITF

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The functional SOA Graph

Building the functional graph requires custom user interface to maintain the soft entity relations

Service repository functionality

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The technical SOA Graph

The “hard stuff”

The technical contract

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The technical SOA Graph

Interface

WSDL

Namespace

Operation

Message

XML Schema

XML Element

XML Type

:IS_DESCRIBED_BY

:DEFINES_OPS

:NAMES

:NAMES

:REQUESTS

:RECEIVES :IS_DEFINED_BY

:DECLARES_ELEMENT

:DECLARES_TYPE

:DEFINES

XML Group

:USES:USES_ELMS

:USES_ELM

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The technical SOA Graph

Building the technical graph requires an automated tool

Service repository functionality

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Concrete Resources

Interface

WSDL

Namespace

Operation

Message

XML Schema

XML Element

XML Type

:IS_DESCRIBED_BY

:DEFINES_OPS

:NAMES

:NAMES

:REQUESTS

:RECEIVES :IS_DEFINED_BY

:DECLARES_ELEMENT

:DECLARES_TYPE

:DEFINES

XML Group

:USES:USES_ELMS

:USES_ELM

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THE IMPACT OF AN EVENT

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Impact of change

Interface

WSDL

Namespace

Operation

Message

XML Schema

XML Element

XML Type

:IS_DESCRIBED_BY

:DEFINES_OPS

:NAMES

:NAMES

:REQUESTS

:RECEIVES :IS_DEFINED_BY

:DECLARES_ELEMENT

:DECLARES_TYPE

:DEFINES

XML Group

:USES:USES_ELMS

:USES_ELM

CHANGE!

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Impact of change

Interface

WSDL

Namespace

Operation

Message

XML Schema

XML Element

XML Type

:IS_DESCRIBED_BY

:DEFINES_OPS

:NAMES

:NAMES

:REQUESTS

:RECEIVES :IS_DEFINED_BY

:DECLARES_ELEMENT

:DECLARES_TYPE

:DEFINES

XML Group

:USES:USES_ELMS

:USES_ELM

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Impact of change

Interface

WSDL

Namespace

Operation

Message

XML Schema

XML Element

XML Type

:IS_DESCRIBED_BY

:DEFINES_OPS

:NAMES

:NAMES

:REQUESTS

:RECEIVES :IS_DEFINED_BY

:DECLARES_ELEMENT

:DECLARES_TYPE

:DEFINES

XML Group

:USES:USES_ELMS

:USES_ELM

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Impact of change

Interface

WSDL

Namespace

Operation

Message

XML Schema

XML Element

XML Type

:IS_DESCRIBED_BY

:DEFINES_OPS

:NAMES

:NAMES

:REQUESTS

:RECEIVES :IS_DEFINED_BY

:DECLARES_ELEMENT

:DECLARES_TYPE

:DEFINES

XML Group

:USES:USES_ELMS

:USES_ELM

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Impact of change

Interface

WSDL

Namespace

Operation

Message

XML Schema

XML Element

XML Type

:IS_DESCRIBED_BY

:DEFINES_OPS

:NAMES

:NAMES

:REQUESTS

:RECEIVES :IS_DEFINED_BY

:DECLARES_ELEMENT

:DECLARES_TYPE

:DEFINES

XML Group

:USES:USES_ELMS

:USES_ELM

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Impact of change

Interface

WSDL

Namespace

Operation

Message

XML Schema

XML Element

XML Type

:IS_DESCRIBED_BY

:DEFINES_OPS

:NAMES

:NAMES

:REQUESTS

:RECEIVES :IS_DEFINED_BY

:DECLARES_ELEMENT

:DECLARES_TYPE

:DEFINES

XML Group

:USES:USES_ELMS

:USES_ELM

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Impact of a small change

Interface

WSDL

Namespace

Operation

Message

XML Schema

XML Element

XML Type

:IS_DESCRIBED_BY

:DEFINES_OPS

:NAMES

:NAMES

:REQUESTS

:RECEIVES :IS_DEFINED_BY

:DECLARES_ELEMENT

:DECLARES_TYPE

:DEFINES

XML Group

:USES:USES_ELMS

:USES_ELM

Impact can be large

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Introducing Meteorite

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Meteorite version 1.0

Build the technical graph

• Read the technical contract– WSDL– XML schema

• Parse it• Build the graph• Store the graph

– In embedded Neo4J

Perform impact analysis

• Pick a point of change• Traverse the graph “upward”• Build the “impact graph”• Make it available off-line

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Test set: http://www.archimiddle.com/wp-content/uploads/2013/08/meteorite-test.rar

Meteorite version 1.0

https://meteorite.archimiddle.com/

Collection of WSDL and XML schema files

Step-by-step guide: http://ignazw.blogspot.be/2013/08/meteorite-test-set.html

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Meteorite Practical Usage• Logon

– Google or LinkedIn account

• Upload data– Zip and rar supported

• Search the node you want to analyse– Go down the tree or use the search box

• Start the impact analysis– View or download the results

• Visual graph• Textual path data

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Sample impact graph

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Sample impact graph

To be changed

Impacted

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SERVICE VERSIONING

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A change in the service contract

API CHANGE

NEWSERVICEVERSION

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Complexity: resource versioning

Interface

WSDL

XML Schema

:IS_DESCRIBED_BY

:FIRST_VERSION

:CONTAINS

WSDL v1

WSDL v2

WSDL v3

:LAST_VERSION

:NEXT_VERSION :NEXT_VERSION

XML Schema v1

XML Schema v2

:LAST_VERSION:FIRST_VERSION

:NEXT_VERSION:USES_SCHEMA

:USES_SCHEMA

:USES_SCHEMA

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METEORITE ROADMAP

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Meteorite Roadmap• Version 1.1

– Add automatic change discovery

• Version 1.2– Add versioning strategies

• Version 2.0– Add functional SOA graph

• User Interface• Resource API

• Version 3.0– Service repository

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FINAL WORDS

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Final words

A Graph DB is excellent for performing impact analysis of events on highly connected systems

Events can be anything: a change, a failure, an addition, …

Thousands of use cases exist

ContactIgnaz.Wanders@Archimiddle.com@ignazw