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Transforming the Way the World Runs Applications

Copyright © 2011 Paremus Ltd. May not be reproduced by any means without express permission. All rights reserved.www.paremus.comParemus March 2011

Distributed OSGi

Robert Dunnerobert.dunne@paremus.com www.paremus.com

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Paremus March 2011

Overview

• OSGi Remote Services basics

• What OSGi Remote Services Admin (RSA) adds

• What’s a Topology Manager?

• What’s still missing?

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Transforming the Way the World Runs Applications

Copyright © 2011 Paremus Ltd. May not be reproduced by any means without express permission. All rights reserved.www.paremus.comParemus March 2011

Bundles share services via the registry

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Transforming the Way the World Runs Applications

Copyright © 2011 Paremus Ltd. May not be reproduced by any means without express permission. All rights reserved.www.paremus.comParemus March 2011

Add remoting at service registry level

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Paremus March 2011

Remote Services: Distribution Providers

• Monitor Service Properties

‣ Export matching services

• Monitor Service Listeners (With hooks)

‣ Import on demand (maybe!)

• There can be multiple, independent DPs

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Paremus March 2011

Remote Service Properties

• Configurations (remoting stacks)- configuration specific properties

• Interfaces

• Intents (from SCA)

‣ QoS & Non-Functional

‣ Can be

- Built in to services

- Required by services

- Required by admins

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Paremus March 2011

Remote Services Open issues

• Open Issues

‣ How are services discovered

‣ When should they be imported

‣ How can system builders control remoting

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Paremus March 2011

Remote Services Admin (RSA)

• API for Import and Export

• Endpoint Descriptions and Listeners

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Transforming the Way the World Runs Applications

Copyright © 2011 Paremus Ltd. May not be reproduced by any means without express permission. All rights reserved.www.paremus.comParemus March 2011

RSA import and export

Imports and Exports are now explicit

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Paremus March 2011

RSA Discovery with EndpointDescriptions

• EndpointDescriptions

‣ Just Properties

• Where do they come from?

‣ Created when you Export

‣ Can be embedded in bundles

‣ Discovered via an EndpointListener

- Or any way you like

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Transforming the Way the World Runs Applications

Copyright © 2011 Paremus Ltd. May not be reproduced by any means without express permission. All rights reserved.www.paremus.comParemus March 2011

RSA: Discovery with EndpointDescriptions

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Paremus March 2011

What’s a Topology Manager?

• RSA for remoting mechanics

• Topology managers for Remoting Policy and Goals

‣ Just a Concept/Role

‣ No API

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Transforming the Way the World Runs Applications

Copyright © 2011 Paremus Ltd. May not be reproduced by any means without express permission. All rights reserved.www.paremus.comParemus March 2011

Alternative Topologies

Independent Pipelines

Round RobinPipelines

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Transforming the Way the World Runs Applications

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Federated Topology Management

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Paremus March 2011

Open Issue: Topology Descriptions

• How to express topology

‣ Description -> Federated TM -> Distributed System

‣ Lots of room for innovation

‣ Too early to standardise

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Paremus March 2011

Open Issue: Distributed Provisioning

• RSA controls the wireup

• But how do the services get deployed

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Paremus March 2011

RSA Implementations

• Eclipse ECF

• Apache CXF

• Paremus Nimble

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Transforming the Way the World Runs Applications

Copyright © 2011 Paremus Ltd. May not be reproduced by any means without express permission. All rights reserved.www.paremus.comParemus March 2011

Builds on NimbleA Distributed Model Driven OSGi runtimeProvisioning and Topology descriptions

Where we fit in

OSGi Distribution (like Ubuntu is a Linux distribution)Ships with OSGi Remote Service Admin

Making Modularity Manageable™

http://www.paremus.com/nimble

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www.paremus.comParemus Feb 2010

Thank you for coming

Robert Dunnerobert.dunne@paremus.com