1. Building Blocks of Enterprise Integration
Udayanga Wickramasinghe
Software Engineer
WSO2 ESB
March 2012

2. Overview
• Introduction
• Demo1 – Message routing using a Recipient List
• Demo 2 – Message notifications with Eventing
• Demo 3 – Split aggregate using Templates

3. What is EAI ?
“an integration framework composed of a collection of technologies
and services which form a middleware to enable integration of
systems and applications across the enterprise”
• Collection of patterns for interconnecting systems efficiently for
commonly recurring integration problems
 simplify system integration
 automate business processes
 reduce management complexity (ie:-cost, monitoring)

4. ESB and EAI ?
CRM HRM
Legacy
Applications
Data
servers

5. ESB and EAI ?
CRM
HRM
Legacy
Applications
Data
servers

6. Introducing WSO2 ESB...
• Based on WSO2 Carbon (Modular Middleware)
and Apache Synapse
• Designed to be asynchronous
o Based on Synapse core with non blocking I/O
• Open source with commercial support
o Apache Software License v2.0
• Rich collection of built-in features supporting
any integration scenario or EIP
• Customizable by adding/removing features

7. WSO2 ESB Components – In a nutshell..
• Message and Service Mediation
 Managing and transforming messages
 Mediating messages coming into a specific proxy service
hosted on ESB
• Mediators
 Simplest functional component.
 Performs a predefined action on a given message
• Sequences
 Sequential arrangement of mediators
• Proxy Services
 Hosting proxy services inside ESB
 Protocol switching and QoS
• Endpoints
 A logical representation of an actual endpoint, or else a
collection of endpoints wrapped within some logic.

8. EIP Patterns Definitions
• Wire Tap
• Content Based Router
• Message Filter
• Message Store

9. EIP PatternsDefinitions
EIP Pattern with ESB
• Envelope Wrapper
• Normalize
• Recipient List

10. EIP Pattern Definitions
• Routing Slip
• Pubsub /media/FREEAGENT
G/webinar_03_01/EIP_webinar_03_01/imgs/Ro
utingTableSimple.gif

11. EIP Pattern Scenarios – Transform
• Protocol Transformation
• Ie:-http  FIX
• Format Transformation – schema based
• Content Transformation
• Ie:- message enrichment

12. EIP Pattern Scenarios – Event Bus
• Publish-Subscribe Architecture
• ESB acting as the event broker
• Multiple subscribers/publishers
• Subscribe to topics
• Both WS Eventing and JMS support

13. EIP Pattern Scenarios – Adapters
• Support different connectors for Integration
• HTTP/S with REST/POX
• Adapters for various Industry Standards
• SAP
• Financial Information eXchange (FIX)
• Health Level 7(HL7)
• JMS
• SMTP
• SMS

14. Demo #1 – a Recipient List
• Send a request to multiple endpoints
• dynamically decide the recipients
Request Recipient 1
Recipient 2
Request
……
Request Recipient n

15. Send Student Results Scenario
Student ID
Student ID
•Get registered
Institutions/results Registered Institutions
Student Desk
•Calculate
recipient list
Institute A
Results
•Send to Institute B
recipients
Recipient Endpoint
Institute C

16. Demo #2 – Pubsub with Eventing
• Event Subscribers subscribe to Topics
• Flat/ hierachical subscriptions
• JMS/WS eventing
• Event publishers  ESB event sink  notify subscribers

17. Send Student Results – Notifications Scenario
Student ID - <EVENT>
•Construct Message
•Publish events
Results
Institute A
subscribe
Institute B
Institute C

18. Demo #3 - Message Splitting and Aggregation
• Request consists of multiple elements which can process
individually
• Collect and store individual messages until a complete set of
related messages has been received.
• Create a single message distilled from the individual messages

19. Templates
• With complex business requirements, ESB config can grow
bigger..
• Need a way to reuse the configuration
• WSO2 ESB 4.0 introduces – Templates
• An analogy… classes vs instances

20. Scatter-Gather With Templates
url, payments
•Scatter/Gather
Request Payments
PaymentService
Collated Response
Request Quotes url, quotes
Collated Response •Scatter/Gather StockQuoteService

21. How would a Enterprise Solution look like?

22. Q&A

23. Selected Customers

24. WSO2 engagement model
• QuickStart
• Development Support
• Development Services
• Production Support
• Turnkey Solutions
• WSO2 Mobile Services Solution
• WSO2 FIX Gateway Solution
• WSO2 SAP Gateway Solution

25. Thank You.