Dynamic Deployment With Apache Felix

Dynamic deployment
with Apache Felix

Marcel Oﬀermans

Friday, November 6, 2009

Marcel Oﬀermans

• commi0er and PMC member at Apache Felix
• commi0er at Apache ACE
• so<ware architect at luminis technologies

• marcel.oﬀermans@luminis.nl


Agenda

• The case for OSGi
• Dynamic Deployment with Apache ACE
• Demo, ACE in AcIon
• Wrapup


The case for OSGi

• Paint ApplicaIon
• wri0en in Java
• sold to customers


“Specials” that fork your code


ConCnuous builds taking a long Cme


Code reﬂects the architecture?


How hard is it to change something?


Re-‐use: copy/paste


Re-‐use: Object Oriented


Re-‐use: Component Based


ParCConing your applicaCon

• minimize dependencies
• consider rate of change
• minimize complexity
• maximize architected ﬂexibility
• promote reuse
• improve testability


Designing with services

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The Case for ACE

• Started in incubator on april 24th 2009
• So<ware distribuIon framework
based on OSGi
• 7 commi0ers
• working codebase
• no release yet
• h0p://incubator.apache.org/ace/


Deployment

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last year
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Why?

• Automate deployment
• Insight into who uses what
• History of each system
• Consistent development, tesIng, producIon
• Basis for several possible extensions


Topology

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High level overview

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Dependency Management

• Organizing components
• Mapping them to targets


Organizing components

• group components: makes them manageable
• two levels: group and license
• Analogy: IKEA catalog
• data is kept in “store repository”

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Mapping them onto targets

• mapping licenses to targets
• someImes done by an external system
• data kept in “license repository”

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User Interface

• user retrieves,
• modiﬁes locally and
• stores data on server


Deployment

• list of targets
• list of versions per target
• list of components per version

• management agent

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Deployment Repository

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Management Agent

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• controls package sharing policies
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Management Agent

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Deployment Admin

• deployment packages
• versioned set of arIfacts
• transacIonal install/update
• fix packages provide deltas
• signing makes them secure
• extensible through resource processors
• AutoConfig defines configuraIon admin data


From dependency to deployment

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Feedback

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Demo


Wrapup

• Apache ACE is incubaIng
• Take it for a test-‐drive!
• Looking for contribuIons:
• Apache Felix Karaf
• Maven / Nexus repository
• Kalumet, JEE auto deployment


QuesCons?

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Dynamic Deployment With Apache Felix

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