Integration Patterns with WSO2 ESB and WSO2 BPS
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September 2014
Integration Patterns with WSO2 ESB and WSO2 BPS
Software Architect Kasun Indrasiri
About the Presenters ๏ Kasun Indrasiri
๏ So$ware Architect/Product Lead : WSO2 ESB
2
Agenda ๏ Introduction to WSO2 ESB and WSO2 BPS
๏ When to select ESB/BPS?
๏ Stateful/Stateless Service orchestration
๏ Integration patterns with WSO2 ESB and WSO2 BPS
3
Introducing WSO2 ESB ๏ A light weight, high performance ESB
๏ Comprehensive REST, SOAP, WS-* support
๏ 100% compliant with all EIPs (Enterprise Integration Patterns)
๏ Connectors (Salesforce, Twilio and many more)
๏ SAP, FIX, HL7 - Domain specific solutions
๏ Zero Code/Configuration driven
๏ Extensible and Scalable 4
ESB as the Integration Bus ๏ Conquering integration nightmares with WSO2
ESB
5
Business Processes in SOA • Business process is a collection of related, structured
activities or tasks that produces a specific service or product for particular customer or customers.
WS-‐BPEL
• Web service orchestration standard from OASIS. • Leverage common skill set (XML, WSDLs, XPath,
XQuery, etc)
Why BPEL ?
Service Orchestra>on
Data service
Orchestration engine
WSO2 BPS
Client
External service
Local service
request
response
Introducing WSO2 BPS ๏ Executes business workflows compliant with WS-
BPEL and WS-HumanTask specifications
๏ Facilitates workflows with heterogeneous enterprise services and human interactions
๏ Model , Deploy, Manage , Monitor workflows
๏ Powered By Apache ODE
9
๏ Service Orchestration – ESB or BPS ?
§ How to select the perfect fit?
• Stateful vs stateless
• Complexity of the orchestration (e.g: 10+ services)
• Long running processes
• Learning curve of BPEL
10
Service Orchestration
๏ Stateless Service Orchestration – ESB
§ Service Channing – call mediator or receive sequence
§ Clone/Aggregate – clone, aggregate mediators
§ Split/Aggregate - iterate, aggregate mediators
11
Service Orchestration in WSO2 ESB
๏ A stateless service chaining scenario – Using Receive Sequence (prior to ESB 4.8)
12
Service Orchestration
๏ A stateless service chaining scenario – Using Receive Sequence (prior to ESB 4.8)
13
Service Orchestration
๏ A stateless service chaining scenario – Using ‘Call’ Mediator (after 4.8)
14
Service Orchestration
๏ A stateless service chaining scenario – Using ‘Call’ Mediator
15
Service Orchestration
๏ Clone-Aggregate
16
Parallel Processing
๏ Split-Aggregate
17
Parallel Processing
Service Orchestra>on in WSO2 BPS
Data service
Orchestration engine
WSO2 BPS
Client
Long running service
request
result
request + txn-id
result + txn-id
๏ A stateful service chaining scenario
Correla>on
txn-id-2000
txn-id-2010
txn-id-2020
Receive
Process Instance 101
txn-id-2000
Receive
Process Instance 102
txn-id-2010
Receive
Process Instance 103
txn-id-2020
WSO2 BPS
? Long
running service
Parallel Processing
Receive
Data service
Update service
...
Invoke Invoke
...
Reply
Excep>on and Recovery Handling
Reserve Air tickets
Holiday Booking
Reserve Hotel
Cancel Hotel Reservation
Cancel Holiday Booking
Cancel Holiday Booking
Handle Fault
๏ Service Orchestration – BPS + ESB
§ ESB handles the connectivity between disparate systems and services
§ BPS handles the orchestration
22
ESB-BPS in action
๏ Service Orchestration – BPS + ESB
§ Use case
23
ESB-BPS in action
๏ Service Orchestration – BPS + ESB
24
ESB-BPS in action
๏ Introduction to WSO2 ESB and WSO2 BPS
๏ When to select what?
๏ WSO2 ESB and WSO2 BPS in action.
25
Conclusion
26
QnA
27
Business Model
6
Links
๏ Service Orchestration with WSO2 ESB – Call Mediator http://wso2.com/library/articles/2014/02/service-orchestration-with-wso2-esb/
๏ Service Orchestration with WSO2 ESB – Receive Sequence http://wso2.com/library/articles/2012/11/enterprise-service-integration-wso2-esb/
๏ Writing a BPEL process with WSO2 BPS http://wso2.com/library/articles/writing-simple-ws-bpel-process-wso2-bps-apache-ode/
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