1. Simplifying Enterprise Integration
with
WSO2 ESB
Hiranya Jayathilaka
Senior Technical Lead
PMC Member (Integration Technologies)

2. A Word About WSO2
• Founded in 2005 by acknowledged leaders in XML, Web Services
technologies & standards and open source. Primary contributors to
Apache Web Services projects started in 2001.
• Producing entire middleware platform 100% open source under the
Apache license.
• Business model is to sell comprehensive support & maintenance for
our products.
• Technology OEM’d by IBM, Progress, Software AG, Alcatel, EMC and
CA.
• Venture funded by Intel Capital and Quest Software
• Global corporation with offices in Palo Alto (USA), Portsmouth (UK)
and Colombo (Sri Lanka).
• 150+ employees and growing.

3. Software in Enterprise
• Modern day business organizations have many
software systems
• Enterprise resource planning solutions
• Management information systems
• Decision support systems
• Tools for research, development and testing

4. Reality Check…
• Enterprises have many reasons for using
software
• Saving time and resources
• Automating complex and repetitive tasks
• Detecting problems quickly and reacting to them
• But most software deployments don’t even
come close to realizing these goals

5. What’s Wrong with Software?
• Nothing really – We are not using them right
• A business is comprised of many related
activities and processes
• These should be carried out in perfect unison
• Software systems that look after individual
business aspects do not see this big picture
• ‘Narrow minded’ systems often obstruct
productivity than improve

6. A Couple of Examples…
• The supply chain management system should
keep an eye on the inventory management
system
• Decision support systems cannot help make
useful decisions without insight to all the
aspects of the business

7. And the Solution is…
• Integrating systems and applications together
• Get software systems to work in perfect
synchronism with each other
• Let applications see the bigger picture and enable
them to take the right action at the right moment
• These requirements lead to………..

8. Enterprise Application Integration
• Integrating enterprise computer applications
using software and computer systems
architectural principles
• Not limited to integration within an
organization
• Integrating with customer applications
• Integrating with supplier/partner applications
• Integrating with public services

9. Easier Said Than Done
• EAI is often one of the hardest problems to
crack
• Enterprise applications are diverse
• Different programming languages (C, Java, C#)
• Different protocols (HTTP, AMQP, FIX)
• Different platforms (J2EE, .NET, LAMP)
• Different message formats (XML, SOAP, JSON)
• Different QoS requirements (security, reliability)

10. If We are Not Careful…

11. ESB to the Rescue
• A software architectural construct which
provides fundamental services for complex
architectures
• Resembles a data bus used in computers
• Provides a uniform approach for integrating
systems
• Reduces point-to-point connections between
systems and reduces coupling

12. ESB in Action

13. Introducing WSO2 ESB
• A lightweight, high performance ESB
• Feature rich and standards compliant
• SOAP and WS-* standards
• REST support
• Support for generic protocols (HTTP/S, JMS…)
• Domain specific protocols (FIX, AMQP…)
• Easy to configure (Zero code development)
• Easy to extend (Clean APIs where necessary)

14. Lightweight to the Core
• The entire binary distribution is sized ~150 MB
– Download  Extract  Run
• No special tools or IDE required
– Use the built-in management console or go old school
by manually editing the configuration files
• Implement complex messaging scenarios and
integration patterns within minutes
– Powerful mediation features and flow constructs
• Low CPU utilization and small memory footprint

15. Functional Components
• Mediators • Tasks
• Sequences • Local entries
• Endpoints • Registry
• Proxy services • REST APIs
• Event sources • Message stores
• Priority executors • Templates
• Message stores

16. Mediators
• The basic message processing unit in the ESB
• Each mediator performs a predefined task on
the input messages
• WSO2 ESB ships with many mediators
• Core mediators (Log, Send, Drop)
• Transformation mediators (XSLT, XQuery)
• Filtering mediators (Filter, Switch)
• Advanced mediators (Clone, Iterate)

17. WSO2 ESB Messaging Model
• Uniform view of “messages” regardless of
underlying protocol and message format
• Pipes and filters model for message flow
control
• Filters Mediators
• Pipes  Sequences
• Non-blocking, stateless, asynchronous
messaging – High performance by design
– 1 Billion transactions a day at eBay alone

18. Configuring the ESB
• The task of laying out ESB functional
components and configuring them
• Done using the Synapse configuration
language (XML based)
• WSO2 ESB makes the job easier by providing a
set of UI wizards and graphical tools
• Equivalent to programming in many ways

19. An Example Configuration

20. One UI to Rule Them All!

21. Switch Between Design View & Source

22. Built-in Statistics & Monitoring

23. Carbon Studio for a More Integrated
Development Experience

24. Supported Protocols/Standards
• Transports
• HTTP/S, POP/IMAP, SMTP, JMS, AMQP, FIX, Raw
TCP, Raw UDP, SAP, File transports (FTP/CIFS)
• Content interchange formats
• SOAP 1.1, SOAP 1.2, POX, HTML, Plain text, Binary,
JSON, Hessian
• WS-* standards
• WS-Addressing, WS-Security, WS-Reliable
Messaging, WS-Policy, MTOM/SwA, WS-Discovery

25. WSO2 ESB Also Supports…
• JMX based • Caching and throttling
monitoring and • Scripting languages
control • JDBC
• Statistics collection • Registry integration
• Priority based • Spring
mediation
• Drools
• XSLT, XPath, XQuery,
Smooks • Clustering

26. As a Router

27. As a Message Filter/Validator

28. As a Message Transformer

29. Protocol Switching

30. As a Load Balancer/Fail-over Router

31. As a QoS Enforcer

32. WSO2 ESB in Action

33. Summary
• ESB is a powerful integration technology and a
key enabler for implementing SOA
• WSO2 ESB is a fast and lightweight ESB
implementation which can be used in a wide
range of integration scenarios
• Powerful abstractions – Many mediation
features – No coding required
• Easy to get started – Easy to grow with

34. Resources
• WSO2 ESB home page:
http://wso2.com/products/enterprise-service-
bus/
• Product documentation:
http://docs.wso2.org/display/ESB403
• Samples:
http://wso2.org/project/esb/java/4.0.3/docs/sa
mples_index.html
• WSO2 ESB – eBay case study:
http://wso2.com/landing/ebay-the-esb-
casestudy/

35. Selected Customers

36. WSO2 Engagement Model
• QuickStart
• Development support
• Development services
• Production support
• Turnkey solutions
– WSO2 Mobile Gateway Solution
– WSO2 FIX Gateway Solution
– WSO2 SAP Gateway Solution

37. Thank You