Generic Programming for SelfRegenerative Systems a CrossStandards Service Invocation

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Generic Programming for Self-Regenerative
Systemsa Cross-Standards Service Invocation

• Mengjie Yu
• School of Computing Mathematical Science
• Liverpool John Moores University
• Email cmsmyu_at_livjm.ac.uk

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Topic

• Research Problems
• Related Works
• Research Approach
• Polyarchical Middleware Overview
• Generic Programming Requirements
• Generic Programming Approach
• Conclusions and Future Work

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Research Problem

• Service Component Models Integration

• Interoperation among varieties of
  existing/emerging service bindings Service
  Invocation Programming Models Service
  Interface Definition Interpretation
  etc. WSDL, Java Remote Interface, IDL
• Runtime self-regenerative approach for software
  systems self-healing Self-awareness/Self-analys
  is about Legacy Services --- through
  service interface descriptions Self-generation
  of appropriate adapters code

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Interoperation Approaches

• The Objective of Service Interoperability
• 1) Provide access to the target components
  regardless of
• .. To add
• 2) Use the source systems semantics and
  constructs

• Interoperation Approaches already include
• 1) Static Approach Statically
  generate the code between the components
• 2) Dynamic Approach Dynamically
  provide the code by using the runtime type
  information from service descriptions
  (etc. documents or interface object)

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Related Works

• Java RMI Over IIOP
• OpenWings Connector
• Visual Edge ObjectBridge

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Proposed Research Approach

• Self-Regenerative Programming Model
• Focused here on
• Generic Code generation of Runtime
  Cross-standards Service Invocation
• Runtime Robust Service Discovery/Lookup within
  Remote Registry Servers bound with varieties of
  mechanisms
• Robust ability to be aware about the runtime
  execution environment
• Flexible to utilize any legacy services through
  self-regenerated adapter
• Coexistence of legacy services or emerging
  service standards
• Less modifications on service original
  implements/designs Multiple Service
  Bindings/Implementation/Description Interfaces

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Middleware Architecture Overview
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Generic Adaptation Programming Approach

• Generic Programming Requirements

• Interoperability
• Among a variety of existing/emerging service
  mechanisms and standards
• Extensibility
• Flexible to generate adaptor template class
  for on-demand service mechanisms and
  standards.
• Genericity
• An abstraction mechanism/ model for
  improving the reusability of our
  polyarchical middleware.

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Generic Adaptation Programming Approach

• Current Model
• Separation of Concerns

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Generic Adaptation Programming Approach

• Generic Adaptation Strategy

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Future Work

• Reliable Self-Regenerative Adaptation Service
• Quality
• Accuracy
• Some developments still under test
• Caches the results of service discovery and
  self-generated adapters for re-usage
• Monitor/Check the availability of legacy services
  and dynamically reconfiguring the adaptation
  behaviours before/after constructing the adapter
  object.
• Improve Security for Accessing Adaptation Service

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• Thank you ?