dataspace protocol: introduce reasons for termination messages

[juliapampus]

Feature Request

Add a list of termination reasons to TransferTerminationMessage and ContractNegotiationTerminationMessage.

• new value in TransferTerminationMessage
• replace String rejectionReason in ContractNegotiationTerminationMessage

Which Areas Would Be Affected?

spi, protocol services

Why Is the Feature Desired?

According to the spec, both messages support an optional list of termination reasons. Those are of type object. The spec doesn't define the schema.

Solution Proposal

Introduce a class that can be extended if needed (e.g., predefined enums like in StoreFailure):

public class ProtocolServiceFailure extends Failure {

    private final String reason;

    ...
}

Add mapping in dsp transformers.

[juliapampus]

Should be List<Object> reasons for now.

[github-actions]

This issue is stale because it has been open for 14 days with no activity.

[github-actions]

This issue was closed because it has been inactive for 7 days since being marked as stale.

[github-actions]

This issue was closed because it has been inactive for 7 days since being marked as stale.