Enum TaskStatus 

pub enum TaskStatus {
    Submitted,
    Working,
    InputRequired,
    Completed,
    Failed,
    Cancelled,
    Rejected,
    AuthRequired,
    Expired,
}

Task lifecycle status.

Serialized using the wire names from the A2A v0.3 specification (input-required, auth-required, …).

Variants

Submitted

Task has been submitted but not yet started.

Working

Task is currently being processed.

InputRequired

Task requires additional input from the user.

Completed

Task completed successfully.

Failed

Task failed.

Cancelled

Task was cancelled.

Rejected

Task was rejected by the agent (e.g. refused work).

AuthRequired

Task requires authentication before it can proceed.

Expired

Task expired before reaching a terminal state.

Implementations

impl TaskStatus

pub fn can_transition_to(&self, target: &TaskStatus) -> bool

Whether a task in this status may legally transition to target.

This is the A2A task lifecycle state machine:

              ┌──────────────┐
              ▼              │
auth-required ─┐            working ──→ completed
               │             │  ├──→ failed
submitted ─────┼─→ working ──┘  ├──→ input-required ──→ working
   │           │                └──→ cancelled
   ├──→ rejected
   ├──→ cancelled
   └──→ expired

Terminal states (completed, failed, cancelled, rejected, expired) have no outgoing transitions.

pub fn is_terminal(&self) -> bool

Whether this status is terminal (no further transitions allowed).

Trait Implementations

impl Clone for TaskStatus

fn clone(&self) -> TaskStatus

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TaskStatus

impl Debug for TaskStatus

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TaskStatus

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for TaskStatus

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

Formats the value using the given formatter.

impl Eq for TaskStatus

impl PartialEq for TaskStatus

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for TaskStatus

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for TaskStatus