Enum UpdateEvent 

pub enum UpdateEvent {
    StatusUpdate(TaskStatusUpdateEvent),
    ArtifactUpdate(TaskArtifactUpdateEvent),
}

Union type for different kinds of updates that can be streamed

Variants

StatusUpdate(TaskStatusUpdateEvent)

ArtifactUpdate(TaskArtifactUpdateEvent)

Implementations

impl UpdateEvent

pub fn task_id(&self) -> &str

Get the task ID from the update event

pub fn context_id(&self) -> &str

Get the context ID from the update event

pub fn settles_task(&self) -> bool

Whether this event settles the task, and so ends a subscription.

True for a status update that reaches a terminal state (COMPLETED, FAILED, CANCELED, REJECTED) or an interrupted one (INPUT_REQUIRED, AUTH_REQUIRED). Both mean the agent has stopped and will emit nothing further until the caller acts — and leaving the stream open on an interrupted state is the worse of the two, because then the client waits on the agent while the agent waits on the client.

An artifact update never settles a task, including its last chunk: last_chunk marks the end of that artifact, and a task may emit several while still WORKING. Conflating the two ends the stream mid-task, which is why this is not the same predicate as “is this the last piece of something”.

A2A v1.0 has no final flag on TaskStatusUpdateEvent (v0.x did), so the end of a stream is derived from the task state and nowhere else.

Trait Implementations

impl Clone for UpdateEvent

fn clone(&self) -> UpdateEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UpdateEvent

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

Formats the value using the given formatter.