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Published byBenjamin Bryant Modified over 9 years ago
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Ocean Observatories Initiative OOI Cyberinfrastructure Life Cycle Objectives Milestone Review, Release 1 San Diego, CA February 23-25, 2010
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OOI CI LCO Review, Feb 2010 2 Motivating Governance Administering collaborations –Based on framing normative relationships among peers –Abstracting away from low-level details OOI, broadly: many stakeholders; many resources; longevity of decades Exchange spaces, narrowly: abstractions for communicating; assembly of multiple topologies for messaging; analogous to traditional enterprise integration patterns
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Elements of a Service Engagement Enactment: doing the domain work – what the end user cares most about Administration: captured via contracts –Partnerships –Rules of encounter Identity Enforcement OOI CI LCO Review, Feb 2010 3
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What is Governance? Broadly, administering service engagements IT Governance: How IT resources are administered SOA Governance: How services are created, deployed, removed, … Currently, governance is manual –Low productivity –Poor scalability for fine-grained, real time governance decisions –Hidden, implicit considerations yield low confidence and poor maintainability OOI CI LCO Review, Feb 2010 4
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Why Governance? Stakeholders using resources to best serve individual and collective needs –Share resources in a controlled manner –Configure and reconfigure dynamically –Enable unanticipated uses for resources –Respect human organizational needs In a nutshell, stakeholders administer themselves OOI CI LCO Review, Feb 2010 5
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Separation of Concerns Protocol: specifying the interactions among autonomous parties Policy: specifying the decision making of each autonomous party as it participates in various protocols Behavior: specifying the implementation that realizes the interactions OOI CI LCO Review, Feb 2010 6
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Principles of Governance: 1 Vividness of Modeling –Grounded in applications; modeled entities are real Autonomy of Participants –Stating rules of encounter; omitting policies from specifications Centrality of Organizations –Modeling communities, facilities, the OOI; specifying rules of encounter; monitoring contracts; sanctioning violators OOI CI LCO Review, Feb 2010 7
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Principles of Governance: 2 Minimality of Operational Specifications –Leaving restrictions unstated except where essential to correctness Institutional Actions –Creation and manipulation of commitments; granting or denying powers, authorizations; effecting sanctions –Separation of concerns from those of operational interactions Reification of Representations –Explicit: hence, inspectable, sharable, and manipulable OOI CI LCO Review, Feb 2010 8
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Exchange Space Use Case OOI CI LCO Review, Feb 2010 9
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Messaging View of Enrollment OOI CI LCO Review, Feb 2010 10
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Community Affiliation Use Case OOI CI LCO Review, Feb 2010 11
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Combined Scenario, Schematically OOI CI LCO Review, Feb 2010 12
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OOI CI LCO Review, Feb 2010 13 Thanks !
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