component based distributed system development

SC2 - Software Core for Computer-based systems

Component based development


2Component based development

� Objective

� Large distributed systems

� Tools chain

� Large distributed systems Architecture

� Business Model

� Component Execution Model

� CCM

� Object Deployment

� Container Concepts


3Objective


4Objective

� Large distributed systems development cost reduction implies:

� Programming by assembly (manufacturing) rather than development (engineering)

� Reduced skills requirements

� Focus expertise on domain problems

� Improving software quality



� Objective


� Tools chain


� Business Model


� CCM




6Component Based development for complex systems

� Develop large software systems like :

� Hardware

� Car

� Manufacturing rather than engineering

� Product line

� Assembly line

� Tools chain

DevelopmentPhase

ProductionPhase

timeEngineering

Product line

Reuse


7Complex system : ATC centre

Flight PlanProcessingFlight Plan

Processing

SupervisoryControlSupervisory

Control

SimulatorSimulator

RecordingReplayRecording

Replay

controllerWorkingPosition


Radar Data ProcessingRadar Data

Processing

Radar FrontProcessingRadar Front

Processing

Dual LANFDDI

AFTN/CIDINATFM

ADJACENTFIR'S/TWR'S

MET Centres

Voice control and

communicationsVoice control

and communications

• Intercom• Priority• Public• RADIO A/G



~ 50

RADAR


8Complex system : Combat Naval System

Radar detections

Tracks display

Detections processed into tracks by the CMS



� Objective


� Tools chain


� Business Model


� CCM




10

UML

Visual Tools

Tool chain : Computer Aided System Design


11Hardware Components Analogy

Component Library

Data Sheet


12Domain Components

Component Library

Data Sheet

CWP

RDP

FDP

CP

FPM

TP

RADAR

ADS-B

AGDC

ACR

ABS


13Computer aided design for the whole process

Integration

Validation

Operation

Development

Design


14From Design, Deployment, Installation, to Validation

IBM Compatible

IBM Compatible

Mac SE/Classic

Sun SPARC

Monitor

DECstation

IBM RS/6000

System EngineerArchitect

Visual design ToolSimulation Tool

System Integrator

Visual Deployment ToolValidation Tool

Design Model Deployment Model


15System Design Visual Tools

System Engineer,Architect




Design Model



IDL


Design Model



IDL XML


Design Model



IDL XML


MOF/XMI

Design Model



IDL XML


MOF/XMI

Simulation Tools

Design Model



IDL XML


Validationpatterns

MOF/XMI

Simulation Tools

Design Model


25System Deployment and Integration

Container

IBM Compatible

IBM Compatible

Mac SE/Classic

Sun SPARC

Monitor

DECstation

IBM RS/6000

System Integrator

COTS

zipfile zipfile



Container

IBM Compatible

IBM Compatible

Mac SE/Classic

Sun SPARC

Monitor

DECstation

IBM RS/6000

System Integrator

COTS

zipfile

XMI

zipfile



IDL

Container

IBM Compatible

IBM Compatible

Mac SE/Classic

Sun SPARC

Monitor

DECstation

IBM RS/6000

System Integrator

COTS

zipfile

XMI

zipfile



IDL

Container

XML

IBM Compatible

IBM Compatible

Mac SE/Classic

Sun SPARC

Monitor

DECstation

IBM RS/6000

System Integrator

COTS

zipfile

XMI

zipfile



IDL

Container

XML

IBM Compatible

IBM Compatible

Mac SE/Classic

Sun SPARC

Monitor

DECstation

IBM RS/6000

System Integrator

COTS

zipfile

Validationpatterns

XMI

zipfile



� Objective


� Tools chain


� Business Model


� CCM




34

FlightManagement

Surveillance

ODSSup

RecordingMouse Click

System Development


35

FlightManagement

Surveillance

ODSSup

RecordingMouse Click

System Development


36

FlightManagement

Surveillance

ODSSup

Recording

Mouse ClickSystem Development


37

FlightManagement

ODSSup

Recording Surveillance



38

FlightManagement

Sup


ODS



39

FlightManagement


ODSSup



40System Architecture

� A business model

� Domain engineering

� Domain services specification

No assumption on Execution Platform(separation of concerns)


41

� A component execution model

(seamless integration)

� Components interconnection

� CORBA component model (CCM)

� Container

System Architecture

� A business model

� Domain engineering

� Domain services specification

No assumption on Execution Platform(separation of concerns)



� Objective


� Tools chain


� Business Model


� CCM




43A Domain Service = A CORBA Object

� A service (CORBA Object) is defined by :

� An Interface Interface

� A protocol Behavior

� Described in UML

Without any assumptions on :

Execution Platform(separation of concerns)


44No assumption on deployment

Implementation Interface

A driver doesn't care of engine's internal working.He only knows the interface



� Objective


� Tools chain


� Business Model


� CCM




51What We May Have :

Service DService C

Service A

Service B

Service E


52Spaghetti PlateSyndrome



NamedPipe



ReliableMulticast



Spaghetti Plate



Spaghetti Plate

System Architect



Spaghetti Plate

System ArchitectSystem Integrator


58

FlightManagement

Surveillance

ODSSup

Recording


ODSSup

What We Want !

Seamless Integration


59Container Model

Technical Middleware (Framework)


60Container Model



61Container Model


ObjectIDL


62Container Model


Container

ObjectIDL


63Container Model


Container

Automaticallygenerated

Containerfrom Object IDL

ObjectIDL


64Container Model


ContainerContainer



ObjectIDL


65Container Model


ContainerContainerContainer



ObjectIDL


66Container Model


ContainerContainerContainer



ObjectIDL

Generated Typed Local Interfaces


67Container Model


ContainerContainerContainerContainer



ObjectIDL



68Container Model


ContainerContainerContainerContainerContainer



ObjectIDL



69Container Model


ContainerContainerContainerContainerContainer



ObjectIDL


Spaghetti Plate



� Objective


� Tools chain


� Business Model


� CCM




71Component and CORBA object

A component is a deployable objet

Client Object Object

Object

Object

Provides

uses

As specified


72Component and object


Client Object ?

?

?

Provides

uses

As deployed


73Object Interface (IDL CORBA 2)

interfaces..

UsualCORBA object


74Component Interface (IDL CORBA 3)

Provides {interfaces..

}

UsualCORBA object


75


}

uses {interfaces..

}

Component Interface (IDL CORBA 3)

Connection toa Usual

CORBA Object

UsualCORBA object


76

Client Server

Server

Server

Provides Uses

Object

Object Composition

IDL

IDL CORBA 2IDL

IDL CORBA 2

IDL

IDL CORBA 2


77

IDL

IDL CORBA 2IDL

IDL CORBA 2

IDL

IDL CORBA 2

IDLIDL CORBA 3

Client Server

Server

Server

Provides Uses

Object

Object Composition


78

Client Server

Server

Server

Provides Uses

Object

Object CompositionIDL


}

uses {interfaces..

}

IDL CORBA 3


79CORBA Component Model (CCM)

� Extension to IDL (IDL2 Meta Type)

� «packaging» language

� Offered functionality (Server role)interfaces providedevents emitted

� Configuration attributes

� Define a component in terms of...

� Dependencies (Client role)distant interfaces requiredevents consumed

CCM IDL “IDL3”


80CCM : Code Generation

Compiler

Idl2

� An IDL2 interface

� Defining interface between component and container

� Middleware, Framework independent

Container

� Container code

� Provides the glue between application and infrastructure

“ IDL3” is parsed, producing :IDL3


81CORBA Component Model IDL

IDL3 provides :• logical architecture

• logical connectivity

• dependency visibility


82CORBA Component Model (CCM)

� Container handles,

� Component interconnection

� Event issues

� Config / packaging issues

� Other functions

� Local IDL (local service ie no IOR)

� Component is isolated from the underlying architecture (framework).

� This is a standard & formal way of creating wrappers.

CCM Container



� Objective


� Tools chain


� Business Model


� CCM






� Component container Interaction


� Separation of concerns

� Container Technical Framework

� Flexible Container Code Generation


85Component/Container interaction

Component interacts with container



Container interacts with other container



Components exchange information



Container interacts with Component


89Container Model

� Clear separation of � the application component

� the technical middleware

container protects the component

container offers simpleinterfaces to component

ComponentMiddleware

Infrastructurecontainer


90Container/Infrastructure interaction

Middleware (Infrastructure, Framework)






Container interacts with other Container Through Infrastructure

Service





Components exchange information Through Infrastructure Service


95Container and object deployment


Client Object Object

Object

Object

Provides

uses


96Container and Object Deployment

03Client Objet O1 02


97

Spaghetti Plate

Container and Object Deployment

03Client Objet O1 02


98

Spaghetti Plate

Container and Object Deployment

03Container O1 02Client Objet


100Container and separation of concerns : without container

03Objet O1 02

BusinessCode

BusinessCode

TechnicalCode

TechnicalCode

TechnicalCode


101Container and separation of concerns : with container

03Container O1 02

BusinessCode

BusinessCode

TechnicalCode

TechnicalCode

TechnicalCode

Object


102

IHM Server ServerHMI ??? ?????

Container and separation of concerns : determinism

• Simplification of business coder’s work

• Automation of technical services: tracing, recording

=> Validation Determinism

Request (Data)

Reply

Trace (Data)

Trace (Data)

Record (Data)

Record (Data)

Request (Data)

Reply

Request (Data)

Reply

ServerContainer

HMIContainer


104

Container C

ontainer

Middleware services

Enterprise computing CCM container

BusinessApplication

Event Persistence Security Transaction


105

Container C

ontainer

Middleware services

Real Time computing CCM container

BusinessApplication

Tracing RecordingLoad

BalancingFault

Tolerance


106

Container C

ontainer

Middleware services

Extended Real Time computing CCM container

BusinessApplication

DDS ? ? ?


108Flexible Container Code Generation

Compiler

Idl2Container

IDL3

Template

TemplateDriven

Code generation

WrittenBy middleware

Experts



Compiler

Idl2

IDL3

C++Template

C++Container



Compiler

Idl2

IDL3

AdaTemplate

AdaContainer



Compiler

Idl2

IDL3

ValidationTemplate

ValidationContainer


112Infrastructure Interchange

Validation Container

Validation Framework

Operational Container

Operational Framework







Validation template written by Validation experts







Operational template written by Validation experts


115System Design and Simulated validation


Simulation Tools

Design Model


MOF/XMI

Operational ContainerValidationPattern


116

BusinessModel

FunctionalModel

Non FunctionalModel

FunctionalSimulation

Results

Non FunctionalSimulation

Results

Container

= =

System

Deployment

System Design and Simulated validation



� Objective


� Tools chain


� Business Model


� CCM




118

RealTime

LoadBalancing

EventsDDS

FaultTolerance

FaultTolerance

LoadBalancing

DDS

Component Based Middleware

Events

component based distributed system development

Business

computerbased systems

objective sc2 software