WSO2Con USA 2015: Optimizing Service Platforms with SOA Governance

1. Op#mizing
Service
Pla2orms
With
SOA
Governance
Milan
Joshi
Technical
Lead
Barclays

2. Barclaycard US Introduction
Ø US Credit Card Division of Barclays Bank PLC.
Ø Provides Partnership & Co-branded credit cards
Ø 9th largest issuer in the United States
Ø Supports and manages integrations with
• Partners like Apple , Priceline, Best Western , LL Bean
• Associations like VISA, AMEX
• Banking Platforms like TSYS & FDR

3. Channel
& Partner Integrations
Ø Customer Website consuming SOAP Services & leveraging ESB (for bulk loading of
account data)
Ø Telephony – Avaya interfacing with Voice XML & leveraging ESB
Ø Acquiring Web App leveraging ESB (Apply)
Ø Customer Care – C# application consuming SOAP services
Ø Over 70+ Partners – Communication happens using web services both SOAP & REST
Ø Account Aggregator – Using the OFX interface to fetch account and transaction data
(www.yodlee.com – leveraging ESB !!!)
Ø Vendors – Interacting with vendors like Crowd Twist for Rewards (leveraging ESB !!!)

4. SOA & Its Stages !!
Ø Create/Expose Services
Ø Identify Services
Ø Test Services
Ø Manage (Monitor) Services
Ø Integrate Services (ESB)

5. Why ESB ???
Ø Allows loose coupling of
components & processes
Ø Provides flexibility for
changing & integrating
applications
Ø Centralizes global functions
like logging, security and
administration
Ø Allows data to be aggregated
at a point and also routed to
multiple destinations
reducing number of point to
point connections

6. Why ESB ???
Ø Being Open Source, it is also
comparatively inexpensive
Ø The synapse-config provides an insight
of the source code
Ø Provides excellent service
orchestration
Ø Provides a variety of useful mediators
like throttle, XSLT, clone, Iterate and
aggregate
Ø A decent service level monitoring setup
Ø API Management
Ø Excellent WSO2 support

7. WSO2 & Governance
Ø Governance
is a key
issue for SOA
Ø Governance is
fundamentally classified
into
• Design Time
• Change Time
• Run Time
WSO2 Governance Registry helps
resolve this. It comprises of the following
components :
Ø Service Registry/Repository
Service Directory
Service Interface Storage
Ø Service Manager
Service lifecycle management
Service version management
Ø Policy Server
Policy management

8. ESB Integration in BarclaycardUS space

9. WSO2 Components leveraged ….
ESB
Proxies
to
services
Transforma#ons
APIs
(REST
&
SOAP)
Governance
Server
Manage
APIs
Service
Registry
Monitoring
Service
Usage
Call
Tracking

10. Deployment Strategy ???
q Using Maven for building ESB and registry artifacts
q Configured build and deployment jobs in Jenkins for continuous
integration
q “CAR” based synapse artifact deployments
q In the recent past, we have moved away from using the worker/manager
setup of ESB to manager only setup
q Yes, so we have moved away from using the SVN based Deployment
Synchronizer. Deployment Synchronizer allows you to synchronize these
deployment artifacts across the nodes of a product cluster

11. Worker – Manager Setup

12. Use Case (Account Aggregators)
Ø Aggregators used to screen scrap our customer website with over 500
logins per minute
Ø Goal was to provide them a single API, a proxy that collates, aggregates
and returns them the required data
Ø Utilize OFX protocol for complete message transformations returned by
SOAP services
Ø Utilize throttling to limit the volume of calls
Ø Utilize clone for creating multiple independent requests
Ø Utilize aggregate for aggregating data, returning with the complete
aggregated data in OFX format
Ø Utilize XSLT for extensive message transformations
Ø Utilize Callout for dependent (timed-waited) calls

13. Use Case (Account Aggregators)
Account
Aggregator
ThroMle
Enterprise
Service
Bus
REST
API
(OFX
transforma#ons)
Account
Statement
Payment
Transac#on

14. Thank
You