Enum SagaManagementError 

#[non_exhaustive]
pub enum SagaManagementError {
    InvalidContext,
    PermissionDenied,
    NotFound,
    RateLimitExceeded,
    PreconditionFailed,
    OperationConflict,
}

业务作用：封闭管理上下文、查询与写动作的确定性拒绝，供协议层稳定映射状态。

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.

InvalidContext

调用主体、原因或其它审计上下文不符合持久化边界。

PermissionDenied

已认证主体缺少当前动作的最小权限。

NotFound

目标实例不存在或不属于已授权租户。

RateLimitExceeded

当前租户的管理动作窗口预算已耗尽。

PreconditionFailed

实例状态、控制态、恢复证据或 CAS 快照不允许当前动作。

OperationConflict

稳定管理操作身份已绑定另一份动作或审计事实。

Implementations

impl SagaManagementError

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

业务作用：从可能附加事务上下文的错误链提取可公开管理拒绝类别。

参数说明：

• error：是管理查询或动作返回的完整错误链。

返回：命中管理拒绝或后端唯一身份冲突时返回对应类别；基础设施或未知失败返回 None。

Trait Implementations

impl Clone for SagaManagementError

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 SagaManagementError

impl Debug for SagaManagementError

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

Formats the value using the given formatter.

impl Display for SagaManagementError

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

业务作用：输出不暴露实例存在性、租户用量或业务状态细节的稳定管理错误摘要。

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 SagaManagementError

impl Error for SagaManagementError

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 SagaManagementError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SagaManagementError