Struct StateEvent 

pub struct StateEvent {
    pub task_name: String,
    pub old_state: TaskState,
    pub new_state: TaskState,
    pub timestamp: Instant,
    pub error: Option<String>,
}

状态事件

当任务状态变更时发出的事件

Fields

task_name: String

任务名称

old_state: TaskState

旧状态

new_state: TaskState

新状态

timestamp: Instant

事件时间

error: Option<String>

错误信息（如果状态变更为 Failed）

Implementations

impl StateEvent

pub fn new( task_name: impl Into<String>, old_state: TaskState, new_state: TaskState, ) -> Self

创建新的状态事件

pub fn with_error(self, error: impl Into<String>) -> Self

添加错误信息

pub fn is_failure(&self) -> bool

检查是否为失败事件

pub fn is_terminal(&self) -> bool

检查是否为终态事件

Trait Implementations

impl Clone for StateEvent

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 StateEvent

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

Formats the value using the given formatter.