Issue - 30 - Support for coordination protocol

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Issue - 30 - Support for coordination protocol
Submitter: Assaf Arkin

Date submitted: 25 June 2003

Categories: enhancement

Document: Specification

Description:

Support for use of coordination protocols for invoking services by 
process and when process invoked by another service.

Clarify use of coordination protocol to:
- Establish a shared execution context with a shared outcome
- Cancellation of any pending work at the request of the coordinator
- Notification of completion or failure by the participant
- Compensation of any completed work at the request of the coordination
- Notification of (compensation) completion or failure by the participant

Clarify how a compensation handler in the process is used to invoke 
compensation handler of a service such coordinated. Clarify how the 
compensation handler of the process is invoked by such a service. 
Clarify how parameters are passed to and from compensation handler when 
invoked in such a manner.

Clarify the relationship between the scope in which an invocation is 
performed and the context that governs the coordination, where to wait 
for the completion of work by the participant, when to cancel such work, 
and how to be notified of general failure.

Also, investigate means to determine whether service supports 
coordination as part of the process definition (where only its interface 
is known), and how a process advertises this capability as part of its 
interface definition, e.g. using WSDL 1.2 F&P.

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