WAS7_Messaging I - Welcome to Introduction to WebSphere...

Welcome to:
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Introduction to WebSphere Platform
Messaging (WPM)

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Unit Objectives
After completing this unit, you should be able to discuss:
•
Overview of WebSphere Messaging system
•
Service Integration Bus Architecture and components
•
Sample topologies
•
Support for other JMS providers
•
Summary

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WebSphere Platform Messaging – Big Picture
•
Provides integrated asynchronous messaging capabilities for
the WebSphere platform
–
Integral JMS messaging service for WebSphere Application
Server
–
Fully compliant JMS 1.1 provider
•
Service Integration Bus
–
Architectural concept
–
Intelligent infrastructure for service-oriented integration
–
Unifies Service-Oriented Architecture (SOA), messaging,
message brokering and publish/subscribe
•
Complements and extends WebSphere Application Server
–
Share and extend messaging family capabilities
–
WebSphere MQ connectivity

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JMS Support
•
WebSphere V6 provides a pure Java JMS 1.1 provider
–
Installed as part of the base server installation
–
Runs completely inside the application server JVM
•Fully integrated with application server management, including high availability.
– Messaging engines failover along with application servers
•Each application server, or cluster, can host a messaging engine. Messaging
engines can be interconnected to form a messaging bus
•
Persistent messages are stored either in an embedded Cloudscape database or an
external database of customer choice (DB2, Oracle, and so forth) via JDBC driver
•
Interoperable with WebSphere MQ
One process ...
Base Server with
J2EE, Integrated
messaging
All Java
code
Integrated
security
Cloudscape or other
RDBMS for
persistence support

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Service Integration as Part of ESB
WebSphere MQ Backbone
MQI
application
JMS
application
WBI
adapter
Event
Broker
MQe
SCADA
Enterprise Service Bus
Web
services
JCA
adapter
Web
service
provider
Platform Messaging
Platform Messaging
Web
service
requestor
JMS
application
Web
service
requestor
JMS
application
Mediation
Mediation
Web
service
provider
Message
Broker
Service Integration Bus
Service Integration Bus
JCA
adapter

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Messaging – Basic Flow
•
Producers send/put messages to destinations
•
Consumers receive/get messages from destinations
•
Destinations are platform messaging managed points of
communication:
–
JMS queues
–
JMS topics
–
Web service endpoints
Consumer
Administration
Producer Message
Message
Destination

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Service Integration Bus (SIBus)
•
It’s a communication infrastructure that provides service
integration through synchronous and asynchronous
messaging
•
Can have multiple interconnected buses in a cell or stand-
alone node (single server)
–