KState-Saga/ca.acendas.kstate.saga.journal/JournalOutcome

JournalOutcome

sealed interface JournalOutcome<out T>

Library-owned result type for all SagaJournal operations.

Using a sealed hierarchy instead of kotlin.Result<T> avoids historical compiler restrictions on kotlin.Result in suspend-interface positions, and keeps the API consistent with SagaResult / StatefulSagaResult patterns in the library.

Usage

when (val outcome = journal.append(entry)) {
    is JournalOutcome.Ok -> process(outcome.value)
    is JournalOutcome.Err -> handleError(outcome.cause, outcome.context)
}

Inheritors

Err

Types

Err

data class Err(val cause: Throwable, val context: String? = null) : JournalOutcome<Nothing>

Failed outcome carrying the root cause and an optional diagnostic context string.

data class Ok<T>(val value: T) : JournalOutcome<T>

Successful outcome carrying value.