Abstract:
In both e-business and e-science, we often need to integrate services across
distributed, heterogeneous, dynamic “virtual organizations” formed from the disparate
resources within a single enterprise and/or from external resource sharing and service
provider relationships. This integration is technically challenging because of the need
to achieve various levels of quality of service (QoS) when running on top of different
native platforms and under dynamic workload conditions. We present an Autonomous
Distributed Service System Architecture that addresses these challenges. Building on
concepts and technologies from the Semantic Web, Multi-Agent Systems, Grid and
Web services communities, this architecture put together a proposition made to cope
with heterogeneous and continuously changing needs of information processing,
service provision and utilization in dynamically evolving environment to meet these
requirements. Autonomous Distributed Services Architecture also define agents’
capabilities in terms of Web services Description Language (WSDL), so that agents
can describe and advertise themselves in UDDI (Universal Description Discovery &
Integration) as and when required.
There is an inherent communication gap between software agents and other
service oriented architectures (SOA) like Web services and Grids, due to different
communication protocols, service descriptions, schema definitions and message
structures they use. These issues are addressed in thesis where we have proposed a
new way of communication and registration of Agent Services in Grid environment.
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Regarding the implementation of proposed architecture, both Grid and Web services
are successfully invoked using Software Agents developed in JADE. In addition to this
task, registering of a Web service in the Grid index service is also achieved
successfully so that Web services could be accessed in Grid environment.
