Component Based Model Driven Development of Mission Critical

Defense Applications Johnny Willemsen

jwillemsen@remedy.nl

This presentation is based on material from Northrop Grumman

The Northrop Grumman Teton project

Teton Mission Statement • Primary: Provide processes, tools, and open architecture

frameworks that enable faster and lower cost development of, and upgrades to, securable embedded processing subsystems, thereby reducing our customers’ acquisition and total ownership costs while enabling adaptability and interoperability with existing and emerging open systems

• Auxiliary: Leverage Mainstream Market Driven (MMD) hardware and software technologies to the maximum extent, and apply open standards wherever possible

The NGES Teton Project OA initiative started in 2007 • Baltimore-based Northrop Grumman Electronic Systems (NGES) is

one of the 4 Northrop Grumman Corp. business sectors (NGAS, NGES, NGIS, NGTS)

• Teton Project processes, tools and frameworks, including its primary OT Scalable Node Architecture (SNA) Platform, continue to be applied across the sector

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Teton Architectural Tenets

OA – Open Architecture MDA – Model Driven Architecture CBA – Component Based Architecture SOA – Service Oriented Architecture EDA – Event Driven Architecture

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The SNA Platform

The Scalable Node Architecture (SNA) Platform consists out of: • SNA Software Development Kit

COTS, FOSS, customer software, MDA, scripts Guidance, reference documentation, examples Installable on a development system

• SNA Core Runtime environment Installable on a target system

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SNA Core

Hardware Layer

OS, Driver & Network Stack

Layer

Middleware Layer • Typically

compressed to show Application Layer content instead, but exposed here to highlight CBDDS technologies used in the SNA Platform

• Many layers are just protocols, templates or virtual function calls (light)

Application Layer

OS, Comms, Network Stack

OS Abstraction & Utilities Framework

Messaging Framework

Application Framework - Run-Time Application Framework - Deployment

KEY Middleware Framework Sub-Layers

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Component Based Software Development

IDL CDP CDD

• Zeligsoft CX • Artisan Studio • Eclipse

• Zeligsoft CX • Artisan Studio

Design Tool IDE Tool Deployment Planning Tool

System Software Design & Component

Definition

Component Interface Design

Component Packaging &

Assembly

Component Deployment,

Integration & Reuse

Component Software Design

Component Implementation

1 2 5 6 4 3

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SNA CBD Software Lifecycle Process

Key Artifacts CPP, H SO

• IDE: Integrated Development Environment • CBD: Component Based Development

• SNA: Scalable Node Architecture • IDL: Interface Definition Language (OMG)

• CDP: Component Deployment Plan • CDD: Component Domain Descriptor

Agile process iterations early & often, incrementally building up from an early executable “skeleton” architecture

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Design tools

Multiple design tools support the MDD process Full iterative process Model is leading for the full MDD process

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IDL

Interface Definition Language standard defined by the Object Management Group (OMG) Used by Component Based DDS (CBDDS) to • Define all data types • Define interfaces • Define ports • Define components

Fully generated by the modeling tools

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Language Mappings

Translate IDL to a certain programming language • Multiple language mappings exist • SNA currently uses the IDL to C++ language

mapping • The C++ mapping has its challenges itself, new

C++11 language mapping is much cleaner and easier to use

Tooling generates starter code based on the IDL definition and the selected language mapping

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DDS

Publish/subscribe middleware Delivers a global data space which is shared between all applications Each application can define its own Quality of Service (QoS) requirements Based on QoS definitions DDS will distribute all data in the system in an efficient matter No single point of failure SNA is using RTI DDS as implementation

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CORBA

Request/response oriented middleware Capability of asynchronous requests Set of well defined optional services Rich set of Quality of Service features Multiple implementations for multiple languages exist SNA uses TAO as C++ implementation

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D&C

Deployment and Configuration standard defined by the OMG Makes it possible to deploy containers, components, connectors based on a so called deployment plan

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CBDDS

Integrates CORBA and DDS into one component framework Best of both worlds combined Programming API for the component developer independent of which middleware is used at runtime Flexible deployment of components fully generated by the deployment modeling tool

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Custom Connectors

Domain specific connectors can embed special middleware solutions • Encapsulating special hardware like Infiniband • Vector Signal processing using VSIPL/VSIPL++ • Discovery of application services using DDS

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Teton project results

Used on 14 programs and up to 20 IRAD efforts Results from programs • Significant productivity gains • Component and assembly reuse results into a new

Software Reuse Library • Complexity & SLOC reductions (up to 56%) • Very high stability • Shortened development times • Excellent and extreme quick portability between

hardware architectures

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Direction of future work

Define Unified Component Model (UCM), which will be a revision of the OMG CCM standard that will make it middleware agnostic Integrate with tooling that support the MDD process for the component business logic Migrate to an implementation using the new IDL to C++11 language mapping Add support for Java for the IT kind of systems

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More information

More information on the Internet • www.remedy.nl • www.orbzone.org • www.omg.org

Contact me after this presentation in person or by email • Johnny Willemsen, jwillemsen@remedy.nl

Special thanks to the Northrop Grumman Teton team

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