The OCCIware projects aims at developing a comprehensive yet modular toolchain for building service oriented applications at the era of Everything as a Service

1. A Formal Toolchain for
Managing Everything-as-a-
Service
Jean Parpaillon
Inria Research Engineer
OGF-44, EGI Spring Conference, May 2015, Lisbon

2. May 2015 OGF-44 / EGI Spring Conference 2
Rationale
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“Everything-as-a-Service” era
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Need for common languages, tools
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IaaS is just a start
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« Industrial OCCI », OGF-40, January 2014, Oxford
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Dedicated Funding for OCCI

3. May 2015 OGF-44 / EGI Spring Conference 3
Objectives
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Formal Meta-model
– Think formally about service oriented software
engineering
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(Eclipse) Engineering Studio
– From design to code
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Runtime
– Just run it !

4. May 2015 OGF-44 / EGI Spring Conference 4
Facts and Figures
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Programme : French Ministry of Industry, « Investissements d'Avenir »
(Investment for Future)
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Funding : BPI (French Public Bank of Investment)
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Overall Budget : 5,6M€, 858 men x months
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Consortium : 10 partners
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Involved People : 11 Strategic Orientation Committee international members
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Current Status : 36 months, started from December 2014
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Website : http://occiware.org
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Software Resources : http://github.com/occiware

5. May 2015 OGF-44 / EGI Spring Conference 5
Consortium

6. May 2015 OGF-44 / EGI Spring Conference 6
Big Picture

7. May 2015 OGF-44 / EGI Spring Conference 7
Theorical Foundations (1)
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Lead : Inria
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OCCI Based Formal Meta-Model
– ECore (Eclipse Modeling Framework)
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Ability to generate tools: editors,
simulators, etc
– OCL (Object Constraint Language)
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Explicit statements on semantic.
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Eg: mixin must not depend on itself, base types specification (URI, number, etc.)

8. May 2015 OGF-44 / EGI Spring Conference 8
Theorical Foundations (2)
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OCCI DSL
– Static : describe resources
– Dynamic : resources lifecycle & interactions
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OCCI Models
– Extend models to PaaS, SaaS, non-functional (runtime config, security,
etc)

9. May 2015 OGF-44 / EGI Spring Conference 9
(Eclipse) Engineering Studio
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Lead: OBEO (Eclipse foundation member)
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Objectives
– For engineers: assist OCCI based service based software
enginering
– For CIOs: simulate migration to cloud based solutions
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How
– Starting from ECore, generate modelers, text editors, decision-
support tool
– Generates runtime configuration/extensions: erocci, rocci, etc.

10. May 2015 OGF-44 / EGI Spring Conference 10
Cloud Designer
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Design Oriented Toolchain (generic)
– Extension designer wizard
– Editors: tree-based, textual, graphical, semantic validation
– Documentation generator
– erocci XML description generator
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Runtime oriented toolchain (generic)
– OCCI Configuration designer
– OCCI runtime config generator
– curl scripts generator
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Extension Specific Tools
– Infrastructure: IaaS config designer + connectors
– Docker: configuration designer + connector
– Other extensions...

11. May 2015 OGF-44 / EGI Spring Conference 11
Runtime
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Lead: ActiveEon
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Objectives
– Leverage model-driven approach for separating models / non-
functional aspects
– Allow engineers to focus on core business (models), providing
security/scalability/etc for free
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Components
– OCCI kernel: model interpretation, component based architecture
– Connectors/backends to legacy interfaces: REST APIs, DB, etc.

12. May 2015 OGF-44 / EGI Spring Conference 12
Use Cases
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Datacenter as a Service (Scalair)
– IaaS, including bare-metal, + monitoring + elasticity management
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Deploy@OCCIware (Linagora)
– Deployment + (re)configuration interoperability
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BigData/HPC (ActiveEon)
– Middleware deployment
– JOB Scheduling
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LinkedData as a Service (Pôle Numérique)
– Open Data platform

13. May 2015 OGF-44 / EGI Spring Conference 13
Dissemination
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Lead: OW2
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Open Source licensed (Apache-style)
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Componentization/Reusability
– Software artifacts submitted to most appropriate
community
– Runtime → OW2
– Engineering Studio → Eclipse
– Glue: OCCI

14. May 2015 OGF-44 / EGI Spring Conference 14
Current Outcomes: Meta-Model
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“A Precise Metamodel for Open Cloud Computing Interface”, IEEE CLOUD 2015, NYC, USA
– Precise metamodel
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Ecore package + 5 OCL invariants + 4 OCL definitions
– Precise type classification system
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Kind, Mixin inheritance, etc.
– Extensible data type system
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Based on EMF
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To be mapped to renderings
– Introduce Extension concept
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Named set of categories
– Introduce Configuration concept
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Set of entities

15. May 2015 OGF-44 / EGI Spring Conference 15
Current Outcomes: Cloud Designer
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Docker dedicated designer
– Define, start, stop docker containers
– Graphical UI
– < 10 days dev effort

16. May 2015 OGF-44 / EGI Spring Conference 16
Current Outcomes: Runtime Arch

17. May 2015 OGF-44 / EGI Spring Conference 17
Current Outcomes: erocci runtime
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Model-driven generic OCCI runtime
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Listeners: HTTP + XMPP listeners
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Backends: Mnesia (DB), D-Bus
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Pluggable authentication
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Erlang/OTP based
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Website: http://erocci.ow2.org

18. May 2015 OGF-44 / EGI Spring Conference 29
Contacts
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Website: http://occiware.org
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Software: http://github.com/occiware
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Twitter: @occiware
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Jean Parpaillon <jean.parpaillon@inria.fr>

19. May 2015 OGF-44 / EGI Spring Conference 30
Questions / Feedback ?
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