Script-Based Generation of Dynamic Testbeds for SOA
This chapter addresses one of the major problems of SOA software development: the lack of support for testing complex service-oriented systems. The research community has developed various means for checking individual Web services but has not come up wit
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Schahram Dustdar Daniel Schall Florian Skopik Lukasz Juszczyk Harald Psaier Editors
Socially Enhanced Services Computing Modern Models and Algorithms for Distributed Systems
Editors Schahram Dustdar Daniel Schall Florian Skopik Lukasz Juszczyk Harald Psaier TU Wien Distributed Systems Group Argentinierstr. 8 1040 Wien Austria [email protected] [email protected] [email protected] [email protected] [email protected]
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With 41 Figures Library of Congress Control Number: 2011930925 ISBN 978-3-7091-0812-3 e-ISBN 978-3-7091-0813-0 DOI 10.1007/978-3-7091-0813-0 SpringerWienNewYork
Preface
Service-oriented architecture (SOA) and service technology is established in practice: many commercial products supporting service-based applications are available and in production use since years, many projects in companies have been successfully completed, and the results of these projects help people to ease solving their business problems. A plethora of standards (aka Web Services standards) have been specified to ensure interoperability of service-based solutions, and many of these standards are implemented in commercial products. Last but not least, a large number of research projects have been completed or are on their way that explore the advanced use of services and extend the corresponding concepts and technologies where needed. Historically, service technology has been developed to solve several problems in integrating platforms and applications. Thus, services are typically realized by programs. More and more services are used to immediately support and represent real-world business activities. This results in the requirement to support services that are not realized by programs but directly by the work performed by human beings. For example, Amazon’s Human Intelligence Tasks (aka Amazon Mechanical Turk) provides the use of human work rendered as Web services. As a result of this demand, a standard around the support of requesting work of human beings via Web services has been created, namely WS-HumanTask. Historically, workflow systems have been the originator of requests for human work as well as the consumer of the results of such work; consequent
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