Diapositive 1

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CALA Juniors Days
Guillaume Dufrêne
Evolution of Service Oriented Architecture
Guillaume.Dufrene_at_lifl.fr
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Agenda

• Bridging component frameworks
• Toward a deployment system for distributed
  heterogeneous component-based applications

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Introduction

• Many Component frameworks
• Fractal, SCA, CCM, OSGi
• Component framework interoperability?
• Data exchanges
• Workflow
• Case Study
• interoperability between Fractal SCA

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Fractal

• ObjectWeb component model
• Hierarchical with sharing
• Unified vision of business and control
  interfaces
• No predefined set of control interfaces
• Support for primitive and composite bindings

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Service Component Architecture

• Specifications by IBM, BEA, Oracle, SAP
  (version 0.9, november 2005 version 0.95,
  july 2006)
• SOA based on a components model
• Two levels of assembly
• Tightly coupled components programming in the
  small
• Loosely coupled service-oriented services
  programming in the large

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Service Component Architecture

• SCA overview

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Service Component Architecture

• Service Component Definition Language
• as in Fractal ADL
• XML files, defines the architecture
• One .module file per module
• Optional .subsystem group modules into
  business logical processes
• Component annotation, defines the implementation
• .componentType file
• JAVA 5 annotations

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Service Component Architecture

• Tuscany (Milestone 1 released on 07/06/2006 M2
  released on 22/12/2006)
• Implements SCA specifications
• JAVA and C runtimes
• Service Data Object
• Data Access Service
• http//incubator.apache.org/tuscany

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Proposal about a bridge

• Bridging Fractal SCA
• Goal
• Fractal to SCA
• SCA to Fractal

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Bridging Fractal SCA / GOAL

• Goal let Fractal SCA applications interoperate
• Common communication mechanism (SOAP)
• Fractal to SCA
• SCA to Fractal
• 2 prototyped solutions
•  shadow  delegating components
• SOAPBindingController

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Bridging Fractal SCA / Fractal to SCA

•  Shadow  delegating components

Java annotated interface
SCA Cpn.
Generated
EP
SCA Shadow
Fractal Cpn.
Soap layer
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Bridging Fractal SCA / Fractal to SCA

• Shadow SCA delegate
• Pros
• Simplest way to connect to a SCA component
• Component description in the Fractal
  architecture
• Cons
• Static generation, at compile time

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Bridging Fractal SCA / Fractal to SCA

• SOAP Controller

SOAPBC
Fractal Cpn.
Soap layer
SCA Cpn.
EP
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Bridging Fractal SCA / Fractal to SCA

• SOAP Controller
• Pros
• Dynamic service binding
• Cons
• Written by programmer
• No component representation of the SCA service

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Bridging Fractal SCA / SCA to Fractal

• SCA client, Fractal server

SCA Cpn.
Fractal Cpn.
Extern.service
?
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Bridging Fractal SCA / SCA to Fractal

• SCA to Fractal

Comanche
register
Fractal Cpn.
Soap layer
SCA Cpn.
ES
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Bridging Fractal SCA

• New feature Fractal client, Fractal server

JVM
JVM
ClientImpl
AccountImpl
SOAP !
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Conclusion

• Ability to bind Fractal SCA
• Static solution Shadow delegate component
• Dynamic solution SOAPBindingController

SCDL
SCA Web-app(with tuscany runtime)
Tomcat
JRE
FractalADL
AOKellruntime
Fractal Appl
JRE
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Toward a deployment system for distributed heterog
eneous component-based applications
GOALS

• Easy deployment of applications
• Overview of the architecture

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FDF a Generic Deployment Framework

• FDF provides a set of generic, and extensible,
  deployment components used by developpers
  end-users
• These components implement basic generic server
  interfaces
• Protocol, User, Port, Hostname, Shell, Transfer,
  etc.
• Many implementations available
• Protocol interface implemented by SSH, Telnet
  components
• Shell interface implemented by SH, CSH or
  WinCommand components

Protocol void send(command)
AbstractProtocol
inherits
AbstractSSH
AbstractTelnet
ApacheJSCH
ExternalTelnet
OpenSSH
JTelnet
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FDF a Generic Deployment Framework

• Bindings between components symbolize
  dependencies

String get_login()User String
get_password() String get_private_key()
void execute(cmd_to_exec)Shell void
setVariable(name,value) void
unsetVariable(name,value)
BasicUser
Port int get_port_number()
SH
OpenSSH
Protocol void send(command)
BasicHostname
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FDF a Generic Deployment Framework

• Generic abstract host composite
• Reify physical hosts such as nodes
• Composition of some generic deployment components
• Main server interfaces exported, such as Shell,
  Protocol...

Abstract Host composite
User
Transfer
Protocol
Shell
Shell
Port
Transfer
Hostname
Hostname
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FDF a Generic Deployment Framework

• Personalities Software component composite
• Contain an abstract Host composite status
  component (INSTALLED, STARTED...)

Software component
Abstract Host composite
status
Deployment
Other needed components
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FDF a Generic Deployment Framework

• Personalities Software component composite
• Implement generic Deployment interface that
  provides main elementary deployment actions
  (install, start, stop, uninstall)
• Personalities are written once by developpers for
  each software to deploy
• Integrated automaton for orchestration

Automaton
interface Deployment install() start()
stop() uninstall()
start
install
UNINSTALLED
INSTALLED
STARTED
specificaction
uninstall
stop
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FDF a Generic Deployment Framework
Configuration to deploy described as a FDF file
lt!-- The declaration of user configuration to
deploy --gtMyDeployment lt!-- The declaration
of nodes --gtHosts oar_node
INTERNET.HOST user
INTERNET.USER(flissi, ,/.ssh/id_rsa)
hostname INTERNET.HOSTNAME(oar.lille.grid5000.
fr) protocol PROTOCOL.OpenSSH
shell SHELL.SH
g5k-nodes apply
For(i,0,1000) node-i
GRID5000.DYNAMICNODE(/nodeslist)
user INTERNET.USER(flissi, ,/.ssh/id_rsa)
transfer TRANSFER.SCP
lt!-- end declaration of
nodes --gt
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Overview
End-User Configuration
Generic deployment components
Translate
Shell
Host
Personalities
Fractal ADL
uses
uses
Protocol
Port
Variable
User
Transfer
Fractal ADL tool
...
Instantiate
Global composite reifying the users
configuration to deploy
Deploy
Network
Cluster
lille
orsay
bordeaux
G5K site
Grid5000 Infrastructure
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Heterogeneous ADL
FDF File
Tomcat
SCDL
SCA Web-app(with tuscany runtime)
JRE
AOKellruntime
FractalADL
Fractal Appl
JRE
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Mapping between ADLs
SCDL
Translate SCDL to Fractal-ADL extend Fractal ADL
with  regions  multi-language AST cf
Fractal-ADL v3 (Think)
FractalADL
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From application architecture to FDF deployment
descriptor
Lack of information to obtain a deployment file
_at_
_at_
Desc
FDF
Annotate the heterogeneous description XML files
can be annotated (similar to JAVA 5 annotations)
Add an additionnal file for technical
informations another common way to annotate
things as in SCA
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Conclusion

• A way to bridge component frameworks
• Toward a deployment system for distributed
  heterogeneous CB applications

Questions ?