KState-Saga/ca.acendas.kstate.saga/StatefulSagaStepConfiguration/otherwise

otherwise

infix fun otherwise(compensation: suspend CompensationScope<R, S>.() -> Unit): StatefulSagaStepConfiguration<C, R, S>

Defines compensation logic with fluent "otherwise { ... }" syntax.

This is the preferred alternative to "and undo" that enables clean chaining without intermediate variables.

The compensation has access to both result and state for smart compensation.

Example:

first call "take-payment" with { cart ->
    updateState { it.copy(paymentAmount = payment.amount) }
    createTransaction(cart, payment)
} otherwise {
    when {
        state.escrowCaptured -> cashManager.dispenseCashRefund(state.paymentAmount)
        state.paymentAmount > 0 -> cashManager.returnEscrow()
        else -> cashManager.disableAcceptors()
    }
}