Return to Home Page
Overview
    History
    Acknowledgements
    Podcasts
    Notification Form
    Feedback Form
    Press Release #1
    Press Release #2
    Press Release #3

Master SOA Design
Pattern Catalog
    Master Pattern List (alphabetical)
    Master Pattern List (by category)
    Master Pattern List (Text)
    Pattern Notation
    Pattern Profiles
    Symbol Legend
    Pattern Contribution Form

SOA Candidate Patterns
    SOA Patterns Review Committee
    Candidate Patterns Overview
    Candidate Patterns List
    Candidate Pattern Contribution Form
    Candidate Pattern
Feedback Form
    SOA Pattern Template

Design Pattern Basics
    What's a Design Pattern?
    What's a Design Pattern Language?
    What's a Compound Pattern?

Supplemental
    SOA Patterns and Application Technologies
    SOA Design Patterns Historical Influences
    SOA Design Patterns and Design Principles
    SOA Design Patterns and Design Granularity
    Legal

Resources
    Design Patterns Publications
    Reference Posters
    SOAPrinciples.com
    WhatIsSOA.com
    SOA Visio Stencil


Inventory Endpoint (Erl)


Home > Inventory Implementataion Patterns > Inventory Endpoint
How can a service inventory be shielded from external access while still offering service capabilities to external consumers?  

Problem

A group of services delivered for a specific inventory may provide capabilities that are useful to services outside of that inventory. However, for security and governance reasons, it may not be desirable to expose all services or all service capabilities to external consumers.

Solution

Abstract the relevant capabilities into an endpoint service that acts as a the official inventory entry point dedicated to a specific set of external consumers.

Application

The endpoint service can expose a contract with the same capabilities as its underlying services, but augmented with policies or other characteristics to accommodate external consumer interaction requirements.
Impacts

Endpoint services can increase the governance freedom of underlying services but can also increase governance effort by introducing redundant service logic and contracts
into an inventory.

Principles

Standardized Service Contract, Service Loose Coupling, Service Abstraction

Architecture

Inventory




A new service introduced to facilitate external consumer requirements can ensure that other native inventory services are not affected.


Related Patterns in This Catalog

Atomic Service Transaction (Erl), Composition Autonomy (Erl), Concurrent Contracts (Erl), Contract Centralization (Erl), Data Format Transformation (Erl), Data Model Transformation (Erl), Domain Inventory (Erl), Enterprise Inventory (Erl), Logic Centralization (Erl), Process Abstraction (Erl), Protocol Bridging (Little, Rischbeck, Simon), Redundant Implementation (Erl), Service Facade (Erl), Service Normalization (Erl), Service Perimeter Guard (Hogg, Smith, Chong, Hollander, Kozaczynski, Brader, Delgado, Taylor, Wall, Slater, Imran, Cibraro, Cunningham)


Related Service-Oriented Computing Goals

Increased Intrinsic Interoperability, Reduced IT Burden


SOA Design Patterns This page contains excerpts from:

SOA Design Patterns by Thomas Erl

Foreword by Grady Booch

With contributions from David Chappell, Jason Hogg, Anish Karmarkar, Mark Little, David Orchard, Satadru Roy,
Thomas Rischbeck, Arnaud Simon, Clemens Utschig, Dennis Wisnosky, and others.

(ISBN: 0136135161, Hardcover, Full-Color, 400+ Illustrations, 865 pages)

For more information about this book, visit www.soabooks.com.
The Prentice Hall Service-Oriented Computing Series from Thomas Erl
Home    SOA Books    SOA Magazine    What is SOA?    SOA Principles    SOASchool.com    SOA Glossary Copyright © 2007-2011
SOA Systems Inc.