Scope

Main goal: end to end view of the story using the messaging service as use case example. Provide a consistent write up at the end of the iteration as input for a report and as baseline for MREFC construction efforts.

Tasks

Tasks proposed for iteration 4:

• Investigate Messaging Service Use case. Use as example to check out the completeness of the specification. We need a real-world example of a distributed system where policy is applied.
  • Broker is a Community and has two types of resources (Named Exchanges - for publishing, and Queues - for retrieving data)
  • OOI MS Federation is a Community (is the Broker seen here as a resource of the federation or as a community affiliation?)
  • Exchange Space Community has resources as Exchange Points
  • Extend the use case such that a data stream from an instrument is published to an exchange point.
  • Core pattern: registration, allocation, use
• Investigate prototype portability - interfaces between the transport, AMS, and policy.
• Map the specification language into executable code
• Policy Specification - investigate Rule languages 
• Consistent documentation

Timeline for Iteration 4

• Start - July 6th
• End - mid/end of August

Design

Integrated model showing the relationship between organization specification, contracts, agents, conversations, Jess rules, etc.

The registration pattern for the Messaging Service use case. (Notation: the black arrow shows the scope)