Service-Oriented Computing: Semantics, Processes, Agents August 2004 Chapter 5: Principles of Service-Oriented Computing Service-Oriented Computing: Semantics, Processes, Agents – Munindar P. Singh and Michael N. Huhns, Wiley, 2005 © Singh & Huhns
Highlights of this Chapter Service-Oriented Computing: Semantics, Processes, Agents August 2004 Highlights of this Chapter Use Cases Service-Oriented Architectures Major Benefits Composing Services Spirit of the Approach Chapter 5 Service-Oriented Computing: Semantics, Processes, Agents - Munindar Singh and Michael Huhns © Singh & Huhns
Hint: Consider each vertex and edge in turn Exercise: In What Ways Do We Need to Enhance the Barebones SOA Architecture? Hint: Consider each vertex and edge in turn Service Broker Publish or announce (WSDL) Find or discover (UDDI) Service Provider Bind or invoke (SOAP) Service Requestor Chapter 5 Service-Oriented Computing: Semantics, Processes, Agents - Munindar Singh and Michael Huhns
Description Of a service Of a user Of a context of usage Functionality Nonfunctional attributes Of a user Needs and preferences Of a context of usage Chapter 5 Service-Oriented Computing: Semantics, Processes, Agents - Munindar Singh and Michael Huhns
Engagement Execution architecture: P2P, messaging Transactions: replications, recovery Coordination Workflows and processes Choreographies Chapter 5 Service-Oriented Computing: Semantics, Processes, Agents - Munindar Singh and Michael Huhns
Collaboration Reasoning Consistency maintenance Negotiation Organizational modeling Business protocols, interaction patterns Contracts, monitoring, and compliance Chapter 5 Service-Oriented Computing: Semantics, Processes, Agents - Munindar Singh and Michael Huhns
Discovery and Selection Finding the right services Semantic matchmaking Team matchmaking: creating functioning collaborations (organizations) Economic selection Reputation and recommendation Distributed architectures Accommodating domain-specific or idiosyncratic qualities of service Trust Chapter 5 Service-Oriented Computing: Semantics, Processes, Agents - Munindar Singh and Michael Huhns
Engineering Methodologies Service Management Security Ontologies: for description Process models: for engagement Service Management Deployment Administration Scalability Security Chapter 5 Service-Oriented Computing: Semantics, Processes, Agents - Munindar Singh and Michael Huhns
Key Concepts for an SOA Loose coupling Implementation neutrality Flexible configurability Persistence Granularity Teams Chapter 5 Service-Oriented Computing: Semantics, Processes, Agents - Munindar Singh and Michael Huhns
Chapter 5 Summary Does moving to services create so many problems? No, these are the needs of open environments Services merely highlight them As computing moves from closed to open environments, virtually every technical aspect is up for grabs Great research and practical opportunities Think of real-life service engagements Chapter 5 Service-Oriented Computing: Semantics, Processes, Agents - Munindar Singh and Michael Huhns