OCCIware, un cadre formel et outillé pour la gestion de toute ressource en nuage. Philippe MERLE, INRIA 18/09/2014

1. OCCIware
un
cadre
formel
et
ou2llé
pour
la
ges2on
de
toute
ressource
en
nuage
Philippe
Merle
-­‐
Inria
Journées
Cloud
Nantes
18
septembre
2014

2. Cloud
Compu>ng
Par>>oning!
Lock
in!
No
one-­‐fits-­‐all
solu>on!
Lack
of
standards!

3. Cloud
Standards
• Amazon
EC2
– de
facto
standard
– but
proprietary
• OpenStack
– open
source
reference
– but
IaaS
only
• ISO/IEC
OVF
– interna2onal
standard
– but
OS
image
only
• DMTF
CIMI
– interna2onal
standard
– but
IaaS
only
• OASIS
CAMP
– industrial
standard
– but
PaaS
only
• OASIS
TOSCA
– industrial
standard
– but
SaaS
only
No
universal
standard!

4. What
about
OCCI?
• Open
Cloud
Compu>ng
Interface
• Open
Grid
Forum
• Recommenda>ons
– Not
standard
but
could
become
• Not
IaaS
only!
• Extensible
by
construc>on
• Various
implementa>ons

5. Open
Cloud
Compu>ng
Interface
Source:
hWp://occi-­‐wg.org/about/
e.g.,
OpenStack
CloudStack
OpenNebula

6. OCCI
Specifica>ons
Source:
Jean
Parpaillon

7. OCCI
Infrastructure
Link
(from occi :: core )
Resource
(from occi::core)
+summary :String [0..1 ]
StorageLink
+occi.storagelink.deviceid :String
+occi.storagelink.mountpoint :String [0..1 ]
+occi.storagelink.state :Enum
Storage
+occi.storage.size :int
+occi.storage.state :Enum
NetworkInterface
+occi.networkinterface.interface :String
+occi.networkinterface.mac :String
+occi.networkinterface.state :Enum
Network
+occi.network.vlan :Integer [0..1 ]
+occi.network.label :Token [0..1 ]
+occi.network.state :Enum
Compute
+occi.compute.architecture :Enum[0..1 ]
+occi.compute.cores :Integer [0..1 ]
+occi.compute.hostname :String [0..1 ]
+occi.compute.speed :Float[0..1 ]
+occi.compute.memory :Float[0..1 ]
+occi.compute.state :Enum
cd: Infrastructure
target
source+
*
links

8. OCCI
Core
1.1
MixinKind
- entity_type :Entity
Action
Entity
+ id :URI
+ title :String [0..1 ]
Resource
+ summary :String [0..1 ]
Link
Category
+ scheme :URI
+ term :String
+ title :String [0..1 ]
+ attributes :Set<String>
1
1
target
1
source+
*
links
0..1 *
actions
1 1category
*
1
kind
*
*
mixins
0..1*
actions
*
*
related
0..1
*
related

9. OCCI
Core
1.1
(errata)
Category
scheme: URI
term: String
title: String [0..1]
Kind Mixin
Action
Entity
id: URI
Resource Link
Attribute
name: String
type: String [0..1]
mutable: Boolean [0..1]
required: Boolean [0..1]
default: String [0..1]
description: String [0..1]
0..1 *
actions 1*
actions
*
mixins
*
entities
1
kind
*
entities
1 target
1 source
*
links
0..1
parent
*
*
depends
*
1 *
attributes
* applies
Seman>cs?
Seman>cs?
Name
conflit?

10. OCCI
Issues
• Lack
of
a
formal
specifica>on
• Only
an
informal
defini>on,
aka
UML
+
English
• Inconsistencies,
ambigui>es,
incomplete
LLL
• Interoperability
issues
!!!
• Lack
of
so`ware
engineering
tools
• Only
run>me
frameworks
(erocci,
rOCCI,
pyOCNI,
OCCI4Java)
• How
to
model/develop/test/…
new
kinds
of
OCCI
en>>es
• Lack
of
standardisa>on
• Large
community:
Oracle,
…,
OpenStack,
CloudStack,
OpenNebula,
…,
Compa>bleOne,
…
• Excepts
three
big
actors
(Amazon,
Microso`,
Google)!!!
PIA
OCCIware

11. OCCIware
• A
formal
framework
for
OCCI
designing
– Think,
model
and
analyse
OCCI
extensions
• A
model-­‐driven
tool
chain
for
OCCI
engineering
– Design,
develop,
test,
and
simulate
OCCI
extensions
• A
Models@run.>me
kernel
for
OCCI
deployment
– Deploy
and
execute
OCCI
models
directly

12. OCCIware
Formal
Framework
• Think,
model
and
analyse
OCCI
extensions
• Various
aspects
• Structural
• Behavioural
• QoS
• SLA
• performance
• etc.
• A
formal
specifica>on
of
OCCI
– Consistent,
unambiguous,
complete,
and
proved

13. OCCIware
Formal
Framework
• Implemented
with
Alloy
– a
lightweight
specifica>on
language
based
on
first-­‐order
rela>onal
logic
– hWp://alloy.mit.edu

14. Alloy4OCCI

15. Alloy4OCCI

16. Think,
Model
and
Analyse
mul>-­‐layer
cloud
systems

17. OCCIware
Model-­‐Driven
Tool
Chain
• Design,
develop,
test,
and
simulate
OCCI
extensions
• A
Domain
Specific
Modeling
Language
for
OCCI
DSML
for
OCCI
• Metamodel
• Textual
concrete
syntax
• Graphical
nota>on
• An
Eclipse-­‐based
Studio
– OCCIware
Editor
– OCCIware
Modeler
– OCCIware
Simulator
– OCCIware
generators
• Documenta>on:
HTML,
PDF,
LaTex,
M$
Word,
etc.
• Code
for
already
exis>ng
OCCI
run>mes
– OCCIware
transforma>ons,
aka
converters,
extractors

18. OCCIware
Metamodel

19. OCCIware
Textual
Concrete
Syntax
<?xml version="1.0" encoding="ASCII”?>!
<OCCI:Extension …
name="OCCI Core”
scheme=”http://schemas.ogf.org/occi/core”>!
<kind term="entity" scheme="http://schemas.ogf.org/occi/core#"
title="Entity type”>!
<attribute name="occi.core.type" type="string"
mutable="true"/>!
</kind>!
<kind term="resource" scheme=http://schemas.ogf.org/occi/core#
title="Resource type" parent="//@kind[term='entity']">!
<attribute name="occi.core.summary" type="string"
mutable="true"/>!
</kind>!
<kind term="link" scheme="http://schemas.ogf.org/occi/core#"
title="Link type" parent="//@kind[term='entity']"/>!
</OCCI:Extension>!

20. OCCIware
Graphical
Nota>on
OCCI
Core

21. OCCIware
Graphical
Nota>on
OCCI
Infrastructure

22. OCCIware
Graphical
Nota>on
OCCI
Infrastructure

23. OCCIware
Graphical
Nota>on

24. OCCIware
Graphical
Nota>on

25. OCCIware
Graphical
Nota>on
OCCI
Plahorm

26. OCCIware
Graphical
Nota>on
OCCI
Applica>on

27. OCCIware
Graphical
Nota>on
OCNI

28. OCCIware
Graphical
Nota>on
OCNI

29. OCCIware
Metamodel
Data
Type
System
Configu
ra2on
En2ty
State

30. OCCIware
Studio
Eclipse
Modelling
Framework
OCCIware
Metamodel
Ecore
OCL
OCCIware
Editor
OCCIware
Modeler
OCCIware
Simulator
OCCIware
…
OCCIware
Generators
occi2java
occi2js
occi2py
occi2ruby
occi2c
…
occi2html
occi2pdf
OCCIware
Transfor-­‐
ma2ons
occi2als
als2occi
occi2uml
uml2occi
…
Xtext
Sirius
Kermeta
Acceleo
MMT

31. OCCIware
Studio

32. OCCIware
Models@run.>me
Kernel
• Deploy
and
execute
OCCI
models
directly
• Based
on
Models@run.2me
principles
• Repository
of
OCCI
models
• Directory
of
OCCI
resources
• Run>me
for
OCCI
resources
• SLA
&
monitoring
support
• OCCIware
Explorer
for
discovering
OCCI
resources
(HTML5/JavaScript)
• A
marriage
of
partner
technos
– Erocci
(Lizenn,
OW2)
– OCCI4Java
(TSP,
Ac>veEon)
– Kevoree
(Inria)
– ProAc>ve
(Ac>veEon,
OW2)
– ROBOconf
(Linagora/UJF)
– Compa>bleOne
(Ac>veEon,
TSP,
OW2)
– …

33. Erocci
Architecture
Source:
Jean
Parpaillon

34. OCCIware
Web
Explorer
Source:
Jean
Parpaillon

35. OCCIware
Big
Picture
DSML
for
OCCI
Exis>ng
OCCI
Run>me
Formal
Specifica>on
Formal
Extension
Extension
Model
Meta
Model
Extension
Code
(4)
Translate
(9)
Translate
(11)
Generate
(1)
Encode
(7)
Model
(5)
Invent
Conforms
to
Conforms
to
Plugs
to
Models
@run.>me
for
OCCI
(12)
Deploy
OCCI
Core
(3)
Feedback
(2)
Refine
(6)
Contribute
Conforms
to
Exis>ng
OCCI
Run>me
Exis>ng
OCCI
Run>me
OCCI
Extension
(8)
Refine
Graphical
Nota>on
Textual
Syntax
(10)
Simulate
ar>fact
(n)
step
n
tool

36. Conclusion
• Formal
specifica>on
of
OCCI
à
OGF
then
…
• DSML
for
OCCI
à
OGF
• Open
source
model-­‐driven
OCCI
tool
chain
à
Eclipse
• Open
source
OCCIware
Models@run.>me
à
OW2
• Industrial
OCCI
extensions
and
use
cases
à Industrial
partners
à Industrial
consor>a

37. PIA
OCCIware
Partners
Pôle
Numérique