Enum StartOutcome 

pub enum StartOutcome {
    Started(SagaInstanceRow),
    AlreadyExists(SagaInstanceRow),
}

业务作用：区分创建入口的两种结果；AlreadyExists 表示业务幂等键命中，无新副作用。

Variants

Started(SagaInstanceRow)

实例已创建，首步命令、timer 与初始 transition 已同事务提交。

AlreadyExists(SagaInstanceRow)

同一业务意图已有实例；返回其当前快照。

Trait Implementations

impl Clone for StartOutcome

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StartOutcome

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for StartOutcome

impl PartialEq for StartOutcome

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for StartOutcome