Web Services in the Enterprise: Concepts, Standards, Solutions, and Management (Network and Systems Management)

324 Pages·2005·14.04 MB·English

by  Akhil Sahai

Web Services in the Enterprise
Concepts, Standards, Solutions,
and Management
NETWORK AND SYSTEMS MANAGEMENT
Series Editor: Manu Maiek
Stevens Institute of Technology
Hoboken, New Jersey
ACTIVE NETWORKS AND ACTIVE NETWORK
MANAGEMENT: A Proactive Management Framework
Stephen F. Bush and Amit B. Kulkarni
BASIC CONCEPTS FOR MANAGING
TELECOMMUNICATIONS NETWORKS: Copper to sand to
Glass to Air
Lawrence Bernstein and C M. Yuhas
COOPERATIVE MANAGEMENT OF ENTERPRISE NETWORKS
Pradeep Kumar Ray
INTEGRATED MANAGEMENT FROM E-BUSINESS
PERSPECTIVES: Concepts, Architectures, and Methodologies
Pradeep Kumar Ray
MANAGING BUSINESS AND SERVICE NETWORKS
Lundy Lewis
WEB SERVICES IN THE ENTERPRISE: Concepts, Standards, Solutions,
and Management
Akhil Sahai and Sven Graupner
A Continuation Order Plan is available for this series. A continuation order will bring delivery of
each new volume immediately upon publication. Volumes are billed only upon actual shipment.
For further information please contact the publisher.
Web Services in the Enterprise
Concepts, Standards, Solutions,
and Management
Akhil Sahai and Sven Graupner
Hewlett-Packard Laboratories
Palo Alto, Calilornia
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Library of Congress Cataloging-in-Publication Data
Sahai, Akhil.
Web services in the enterprise : concepts, standards, solutions, and management / Akhil
Sahai, Sven Graupner.
p. cm. - (Network and Systems management)
Includes bibliographical references and index.
ISBN 0-387-23374-1 (alk. Paper)
1. Web services. 2. Electronic commerce. I. Graupner, Sven. II Title. Ill Kluwer
Academic/Plenum Publishers network and systems management.
TK5105.88813.S24 2005
006.7'6—dc22
2004062645
Springer Science+Business Media, Inc.
New York, Boston, Dordretch, London, Moscow
ISBN 0-387-23374-1 Printed on the acid-free paper.
© 2005 Springer Science+Business Media, Inc.
All Rights reserved. This work may not be translated or copied in whole or in part
without the written permission of the publisher (Springer Science+Business Media,
Inc. 233 Spring Street, New York, NY 10013, USA), except for brief excerpts in
connection with reviews or scholarly analysis. Use in connection with any form of
information storage and retrieval, electronic adaptation, computer software, or by
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The use in this publication of trade names, trademarks, service marks and similar
terms, even if they are not identified as such, is not to be taken as an expression of
opinion as to whether or not they are subject to proprietary rights.
Printed in the United States of America
9 8 7 6 5 4 3 21 SPIN 11323570
springeronline.com
Dedicated to people who gave me life and who make my life
worth living: my parents, Dada, my beloved wife Nina, Daddy
and Mama
-Akhil
Dedicated to my parents, friends and colleagues who gave me
inspiration to write this book
-Sven
PREFACE
Enterprise IT infrastructure is getting increasingly complex. With the
increase in complexity has arisen the need to manage it. Management in
general can be seen as the process of assuring that a managed entity meets its
expectations in a controlled and predictable manner. Examples of managed
entities are not only components, entire systems, processes, but also people
such as employees, developers, or operators, and entire organizations.
Traditional management has addressed some of these issues in varied
manner. The emergence of Web services has added a new complexity to the
management problem and poses a new set of problems. But it also adds to
the mix a set of technologies that will make the task of management simpler.
Management of Web services will be critical as businesses come to rely
on them as a substantial source of their revenue. The book tries to cover the
broad area of web services, the concepts, implications for the enterprise,
issues involved in their management and how they are being used for
management themselves. The book is intended as a reference for current
practice and future directions for web services and their management.
The book is directed at:
• Computing professionals, academicians and students to learn about
the important concepts behind the web services paradigm and how
it impacts the enterprise in general and how it affects traditional
application, network and system management.
• Business Managers and Analysts to understand the implications of
web services and their management on the enterprise
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• System managers to understand the concepts, impact, techniques,
and standards that are either available today or are emerging to
manage web services
• Researchers, to complement their current knowledge and expertise.
• Network and System Management vendors in understanding where
management capabilities are required in the domain of web
services and how to go up the management stack.
Acknowledgements
We would like to thank the reviewers (who remained anonymous till the
book went into production), Prof. Lundy Lewis, University of New
Hampshire, Durham, New Hampshire, USA and Dr. Pradeep Ray,
University of New South Wales, Sydney, Australia for the invaluable
comments and suggestions that they provided. These comments and
suggestions greatly improved the book. We would also like to thank
researchers at HP Labs, Palo-Alto who we collaborated and researched some
of the web services and management technologies with and who gave us the
motivation to write the book. Thanks are due to management team, namely
Vijay Machiraju, Mohammed Dekhil, Kumar Goswami and Rich Friedrich
for being supportive and encouraging of the whole endeavor.
My deepest gratitude are towards my parents whose immense belief, love
and self-less sacrifice has made me what 1 am today. I would like to thank
my wife Nina for her understanding and patience and for putting up with me
during writing of the book. I also thank her for the painstaking review she
undertook for the book. She has been an immense source of strength and of
unconditional love throughout. Acknowledgements are also due to my
brother for reviewing and giving me feedback on the book and in general
providing me guidance at every step of my life and for being there for me.
Akhil Sahai
June 2004
I would like to acknowledge my parents, friends and colleagues who
gave me inspiration to write this book
Sven Graupner
June 2004
CONTENTS
PART I - WEB SERVICES AND MANAGEMENT
Chapter 1 - Introduction
1. Introduction 3
2. Web Services: Definition 3
3. Market Trends 4
3.1 Transformations in Enterprise System Management 4
3.2 Emergence of Web Services ....5
3.3 Need for Web Service Management 8
3.4 Growing Potential for Federated Management 9
4. Management of Web Services 9
5. Service Life Cycle Management 11
6. What to Expect in the Book 13
Chapter 2 - Overview Of Web Services
1. Introduction to Web Services 15
1.1 Tightly Coupled Distributed Software Architectures 15
1.2 Loosely Coupled Distributed Software Architectures 16
1.3 Client Utility System (E-Speak) 16
1.4 T-Spaces 17
1.5 Jini 17
2. The State of the Art in Web Services 17
2.1 Web Services Description 18
2.2 Web Services Discovery 21
2.2.1 E-Marketplace 21
2.2.2 UDDI 21
2.2.3 Web Service Inspection Language 22
2.3 Web Services Choreography 23
2.3.1 Web Services Flow Language , 23
2.3.2 XLANG 24
2.3.3 BPEL4WS 24
IX
X Contents
23 A ebXML 25
3. Web Services Management 26
3.1 WSRF - The Web Services Resource Framework 27
3.1.1 History .27
3.1.2 Web Services and Service Oriented Architecture 28
3.1.3 Stateful Resources and Stateless Web Services 29
3.1.4 WSRF Definitions 31
3.1.5 Summary of WSRF ...35
3.2 Web Services Distributed Management (WSDM) 36
4. Platforms for Web Services 38
4.1 First Generation: CGI and Perl 38
4.2 Second Generation: Java 39
4.3 Third Generation: Richer Development and Run-time
Environments 39
4.4 Fourth Generation: Web Services Frameworks 40
5. Putting It All Together 41
Summary 45
Chapter 3 - Application Management and Web Services
1. Introduction 47
2. Application Life Cycle 48
3. Processes in Application Management 50
3.1 Generalized View on Application Management 51
3.2 Management Process Life Cycle 52
3.3 Definition of a Management Process (at Creation Stage) 53
3.4 Instrumenting the Managed Domain (at Deployment Stage) 54
3.5 Execution of a Management Process (Operation Stage) 55
3.6 Management Process Hierarchies 56
3.7 Management of Management Processes 57
4. Aspects in Application Management 57
4.1 Taxonomy 1: Management Aspects Versus Application Life
Cycle 59
4.2 Taxonomy 2: Application Life Cycle Versus Management
Process Steps 61
5. Management in Application Creation 62