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Towards open service environments

  • Kurt Geihs
  • Brigitte Bär
  • Arno Puder
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 938)

Abstract

The continuous and rapid evolution of distributed system technology leads to service environments with a large number of service types, service providers and service users, where services are freely offered and requested. Dynamic changes and configuration flexibility are among the key requirements for such an open service environment (OSE). Our research focuses on the infrastructure that is needed for an OSE. We present an architectural framework for such an infrastructure. In particular, we investigate service type specification, matching (trading) and conformance. In order to overcome the limitations of pre-defined, purely IDL-based service type definitions, we propose an extension based on declarative semantics. The extension specifies the behavior of a service type and allows for a polymorphic matching of service requests and service offers independent of their respective syntactical representations in a type family. In addition to deciding about type compatibility we need to test the conformance of a service implementation to its specification. In a first step we have developed a mapping of CORBA IDL onto TTCN, a test notation used in protocol conformance testing for the definition of abstract test cases. This mapping enables us to utilise much of the methodology and tools that are available for protocol conformance testing.

Keywords

open distributed processing (ODP) trading type specification type management declarative semantics conformance testing 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Kurt Geihs
    • 1
  • Brigitte Bär
    • 1
  • Arno Puder
    • 1
  1. 1.Department of Computer ScienceUniversity of FrankfurtFrankfurtGermany

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