Struct StateTransition 

pub struct StateTransition {
    pub from: TaskState,
    pub to: TaskState,
    pub timestamp: f64,
    pub reason: Option<String>,
    pub metadata: Option<HashMap<String, Value>>,
}

A state transition record

Fields

from: TaskState

Previous state

to: TaskState

New state

timestamp: f64

Unix timestamp when the transition occurred

reason: Option<String>

Optional reason for the transition

metadata: Option<HashMap<String, Value>>

Optional additional metadata

Implementations

impl StateTransition

pub fn new(from: TaskState, to: TaskState) -> Self

Create a new state transition

pub fn with_reason(self, reason: impl Into<String>) -> Self

Add a reason for the transition

pub fn with_metadata(self, metadata: HashMap<String, Value>) -> Self

Add metadata to the transition

pub fn with_meta(self, key: impl Into<String>, value: Value) -> Self

Add a single metadata key-value pair

Trait Implementations

impl Clone for StateTransition

fn clone(&self) -> StateTransition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StateTransition

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StateTransition

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for StateTransition

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.