Oracle SOA Suite 11g Mediator vs. Oracle Service Bus (OSB)

Oracle SOA Suite 11g Mediator vs Oracle Service Bus (OSB) DOAG conference 2009 Guido Schmutz, Technology Manager / Partner Trivadis AG 19.11.2009, Nürnberg

Introduction
Guido Schmutz
Working for Trivadis for more than 12 years
Oracle Ace Director for Fusion Middleware and SOA
Co-Author of different books
Consultant, Trainer Software Architect for Java, Oracle, SOA and EDA
Member of Trivadis Architecture Board
Trivadis Technology Manager
More than 20 years of software development experience
Contact: guido.schmutz@trivadis.com

About Trivadis
Swiss IT consulting company
13 locations in Switzerland, Germany and Austria
~ 540 employees
Key figures 2008
Services for more than 650 clients in over 1‘600 projects
Over 150 service level agreements
More than 5‘000 training participants
Research and development budget: CHF 6.0 Mio. / EUR 3.6 Mio.

Trivadis Integration Architecture Blueprint

Agenda
History
Oracle SOA Suite 11g
Which component to use when?
Architecture
Summary
Data are always part of the game.

History of the Oracle SOA platform Oracle Service Bus Oracle ESB Oracle BPEL Source: Oracle

Positioning products of Oracle SOA Suite 10g
BPEL Process Manager
BPEL Process Manager is the primary composition, orchestration and process engine in the SOA Suite
Oracle Enterprise Service Bus (OESB)
old „ESB“ –OESB was the primary ESB prior to BEA aquisition.
After acquisition of BEA its role is to provide mediation services between SOA Suite components
In 11g this will be known as the Mediator and acts as a component in an SCA assembly
OESB is the only ESB available if running on a non-Weblogic server
Oracle Service Bus (OSB)
Previously known as BEA Aqualogic Service Bus (ALSB)
Oracle’s primary service bus
the preferred platform for service virtualization and interactions external to the SOA Suite
Currently OSB is only available on WebLogic server but the intention is provide it on other platforms as well in the future
OSB is the foundation of service bus functionality moving forward
Can be used independently, without SOA Suite

Agenda
History
Architecture
Summary

From Oracle SOA Suite 10g to 11g

What is new with Oracle SOA Suite 11g
Most importantly SOA Suite 11g sees the introduction of a common service infrastructure
through the Service Component Architecture (SCA) Standard
This way the individual products of 10g become so called service engine within SCA
With the benefit of a much better integration
Mostly beneficial for the developer, as he can now develop and deploy from a single development environment
The Oracle Service Bus (prev. BEA) is not yet available in a version 11g
But version 3.1 can be combined with SOA Suite 11g with no problems
But when should we use which component?
How does a reasonable combination of Oracle SOA Suite 11g and Oracle Service Bus look like?

Agenda
History
Architecture
Summary

What do the different component offer? BPEL OSB Mediator 11g OESB Message Transformation (XSLT) Human Workflow Process State/ Long running Message Filter Adapter Framework Decision Service Process Orchestration XQuery Transformation Value Mapping Cross-Reference Tables (XREFs) Split-Join XA Support JDeveloper Eclipse IDE Web Console SLA Dashboard Resubmit Message Ordering Message Throttling Service Pooling (Load Balancing) Instance Monitoring Security Message Validation Reliable Messaging Asynchronous Messaging Service Types and Transport Compensation Parallel Processing Graphical Flow Design Sensors Message Routing

BPEL vs. OSB/Mediator
BPEL
Primarily for stateful and long running processes
Orchestrating service calls
Implementation of composite services
Integration of Rules Engine and Human Workflow
Instance Monitoring
OSB/Mediator
Stateless Messaging
Value Mapping and Cross-Reference Tables for supporting canonical datamodels
Implementation of the VETRO pattern
V alidate
E nrich
T ransform
R oute
O perate

Mediator vs. Oracle Service Bus (OSB)
Mediator
The “tiny”, “light weight” service bus
Limited to simple Mediator functionality for the implementation of the VETRO pattern
V alidate
E nrich
T ransform
R oute
O perate
Value Mapping and Cross-Reference Table for supporting the canonical datamodel
Developlent through JDeveloper IDE
Event Delivery Network for Publish-Subscribe semantic
Message Transformation with XSLT
Can be used and deployed as a SCA component
Oracle Service Bus (OSB)
The large, powerful service bus
Extended functionality important for enterprise-wide Integration, like
Message Throttling
Service Pooling
Reliable Messaging
Development through Eclipse IDE or Web Console
Message Transformation over XQuery and XSLT
OSB specific deployment
Not yet integrated with SCA

OSB: Service Pooling
Routing to active endpoints, service load balancing
Option for the system to automatically take non-responsive URIs out of the pool, and put them back in as they become responsive
Alerts will be generated when the status of the endpoint changes from Up  Down and vice versa
Service Clients Endpoint URL 1 Endpoint URL 3 Endpoint URL 2 Proxy Svc Client 1 OSB Cluster Bus Svc If a URI is non-responsive, take the URI out of the pool Bring the URI back in the pool when it is back-up

OSB: Split-Join
Incoming payload is split into multiple service invocations
Multiple service responses are aggregated into single payload
Parallel action results into significant performance improvement
Split ForEach ProcessOrder AquaLogic Service Bus Join ProcessOrder 15 Order 1 Order 2 Order 3 SPLIT Response 1 Response 2 Response 3 JOIN Request Payload Response Payload

OSB or Mediator: Asynchronous Messaging
Synchronous to Asynchronous protocol transformation
Notation taken from the book: Integration Architecture Blueprints
synchronous asynchronous

BPEL: Composite Services
Composite services can be easily and declaratively combined with BPEL

OSB or Mediator: Transformation and canonical datamodel

Agenda
History
Architecture
Summary

SOA Architecture Mediator (OESB) OSB Oracle Data Integrator (ODI) OSB

(Business)process starts a traditional ETL task

Federated Service Bus Pattern
Application level
multiple application buses per domain, one for each application
Domain level
multiple domain buses, one for each domain
Corporate (enterprise) level
one corporate bus for the enterprise
External level
one external gateway for the enterprise
Source: http://soa-eda.blogspot.com/2009/03/federared-service-bus-infrastructure.html Mediator (OESB) Mediator (OESB) OSB OSB

Multiple SOA Domains linked by Enterprise-level ESB

Agenda
History
Architecture
Summary

Summary
Both Mediator 11g and Oracle Service Bus implements ESB functionally well
The decision which service bus to use, can be taken
Based on the required and supported features
Based on the information, if the SOA Suite 11g with all the other components like BPEL, Rules, Human Workflow, etc. are needed as well or if only a standalone ESB is necessary
If other components of SOA Suite 11g are needed => Mediator more likely
If standalone ESB is needed => Oracle Service Bus more likely
In a large and complex SOA it makes sense to combine the two via the Federated Bus pattern
i.e. using both the Mediator and Oracle Service Bus

Thank you! DOAG conference 2009 Guido Schmutz, Technology Manager / Partner Trivadis AG 19.11.2009, Nürnberg

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Oracle SOA Suite 11g Mediator vs. Oracle Service Bus (OSB)

by Guido Schmutz

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Oracle SOA Suite 11g Mediator vs. Oracle Service Bus (OSB) Presentation Transcript