interceptor
Register an interceptor to observe and potentially veto saga step execution.
Interceptors are invoked before and after each step (StepPhase.Before → StepPhase.After, LIFO for After), and after each compensation action (StepPhase.Compensation). An interceptor returning InterceptorOutcome.Veto from a StepPhase.Before phase prevents the step from executing and initiates compensation of prior completed steps.
The interceptor receives the current S state as a read-only snapshot — interceptors cannot mutate saga state; that remains the responsibility of step bodies.
Registration order matters — see SagaInterceptor for ordering semantics.
Return
This builder for method chaining
Parameters
The interceptor to register
Register an interceptor using a lambda.
Convenience method for creating an interceptor from a suspend lambda.
Return
This builder for method chaining
Parameters
Suspend function that intercepts step phases