Struct TaskRecord 

pub struct TaskRecord {
    pub id: String,
    pub state: TaskState,
    pub attempts: u32,
    pub created_at: u64,
    pub updated_at: u64,
    pub started_at: Option<u64>,
    pub finished_at: Option<u64>,
    pub output: Option<Value>,
    pub error: Option<String>,
    pub metadata: HashMap<String, String>,
}

A persisted snapshot of a task’s execution history.

This is the unit of durability: the executor saves one record per task so that a crashed run can be recovered without re-executing completed work.

Fields

id: String

Stable task identifier.

state: TaskState

Current lifecycle state.

attempts: u32

Number of execution attempts made so far.

created_at: u64

When the record was first created (ms since epoch).

updated_at: u64

When the record was last modified (ms since epoch).

started_at: Option<u64>

When execution most recently started, if ever.

finished_at: Option<u64>

When execution most recently finished, if ever.

output: Option<Value>

The successful output, if any.

error: Option<String>

The last error message, if any.

metadata: HashMap<String, String>

Arbitrary user/system metadata.

Implementations

impl TaskRecord

pub fn new(id: impl Into<String>) -> Self

Create a fresh record in the TaskState::Pending state.

pub fn transition(&mut self, state: TaskState) -> bool

Transition the record to state, updating updated_at.

Returns false (and leaves the record untouched) if the transition is not allowed by TaskState::can_transition_to.

pub fn duration_millis(&self) -> Option<u64>

Wall-clock execution duration in milliseconds, if both endpoints exist.

Trait Implementations

impl Clone for TaskRecord

fn clone(&self) -> TaskRecord

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TaskRecord

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TaskRecord

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TaskRecord

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

where __S: Serializer,

Serialize this value into the given Serde serializer.