Enum StartSagaError 

#[non_exhaustive]
pub enum StartSagaError {
    DefinitionInactive,
    InvalidPayload,
    DefinitionEmpty,
    RequestConflict,
    TenantQuotaExceeded,
}

业务作用：封闭 Saga 创建的确定性拒绝原因，供协议适配器按类型映射稳定状态。

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

DefinitionInactive

指定 workflow/version 当前不允许创建新实例。

InvalidPayload

正文格式、schema 或双重输入来源不符合冻结步骤合同。

DefinitionEmpty

已发布 definition 没有可执行步骤。

RequestConflict

Saga 身份或业务幂等槽已被不同启动请求占用。

TenantQuotaExceeded

租户在飞实例配额已耗尽。

Implementations

impl StartSagaError

pub fn from_error(error: &Error) -> Option<Self>

业务作用：从完整错误链中提取协议层可以安全公开的 Saga 创建拒绝类别。

参数说明：error 是运行核心返回且可能附加调用上下文的完整错误链。

返回：包含封闭创建拒绝时返回对应类别；基础设施或未知失败返回 None。

Trait Implementations

impl Clone for StartSagaError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for StartSagaError

impl Debug for StartSagaError

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

Formats the value using the given formatter.

impl Display for StartSagaError

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

业务作用：输出不含租户用量、请求正文或持久化细节的稳定创建拒绝摘要。

参数说明：formatter 是标准格式化输出目标。

返回：摘要写入成功时返回 Ok；格式化失败返回对应错误。

impl Eq for StartSagaError

impl Error for StartSagaError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for StartSagaError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for StartSagaError