Integration Patterns with WSO2 ESB and WSO2 BPS

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

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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

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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

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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

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๏  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

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Service Orchestration

๏  Stateless Service Orchestration – ESB

§  Service Channing – call mediator or receive sequence

§  Clone/Aggregate – clone, aggregate mediators

§  Split/Aggregate - iterate, aggregate mediators

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Service Orchestration in WSO2 ESB

๏  A stateless service chaining scenario – Using Receive Sequence (prior to ESB 4.8)

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๏  A stateless service chaining scenario – Using Receive Sequence (prior to ESB 4.8)

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๏  A stateless service chaining scenario – Using ‘Call’ Mediator (after 4.8)

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๏  A stateless service chaining scenario – Using ‘Call’ Mediator

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๏  Clone-Aggregate

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Parallel Processing

๏  Split-Aggregate

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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


txn-id-2010

Receive


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

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ESB-BPS in action


§  Use case

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ESB-BPS in action


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ESB-BPS in action

๏  Introduction to WSO2 ESB and WSO2 BPS

๏  When to select what?

๏  WSO2 ESB and WSO2 BPS in action.

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Conclusion

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QnA

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Business Model

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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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Integration Patterns with WSO2 ESB and WSO2 BPS