Enum A2AOperation 

pub enum A2AOperation {
    SendMessage {
        message: Message,
        stream: bool,
        context_id: Option<String>,
        task_id: Option<String>,
    },
    GetTask {
        task_id: String,
    },
    ListTasks {
        status: Option<TaskStatus>,
        limit: Option<u32>,
        offset: Option<u32>,
        next_token: Option<String>,
    },
    CancelTask {
        task_id: String,
    },
    DiscoverAgent,
    SubscribeTask {
        task_id: String,
    },
    RegisterWebhook {
        url: String,
        events: Vec<String>,
        auth: Option<String>,
    },
}

A2A protocol operations

This enum represents all the abstract operations defined in the A2A protocol spec. Each operation is binding-independent and can be implemented over HTTP, gRPC, etc.

Variants

SendMessage

Send a message to an agent

Fields

message: Message

The message to send

stream: bool

Whether to stream the response

context_id: Option<String>

Optional context ID for multi-turn conversations

task_id: Option<String>

Optional task ID to continue from

GetTask

Get a task by ID

Fields

task_id: String

The task ID to retrieve

ListTasks

List tasks with optional filtering

Fields

status: Option<TaskStatus>

Filter by task status

limit: Option<u32>

Maximum number of tasks to return

offset: Option<u32>

Offset for pagination

next_token: Option<String>

Continuation token for pagination

CancelTask

Cancel a task

Fields

task_id: String

The task ID to cancel

DiscoverAgent

Discover agent capabilities (fetch Agent Card)

SubscribeTask

Subscribe to task updates (streaming)

Fields

task_id: String

The task ID to subscribe to

RegisterWebhook

Register a webhook for push notifications

Fields

url: String

The webhook URL

events: Vec<String>

Events to subscribe to

auth: Option<String>

Optional authentication for webhook calls

Implementations

impl A2AOperation

pub fn endpoint(&self) -> String

Get the HTTP endpoint path for this operation

pub fn method(&self) -> &'static str

Get the HTTP method for this operation

pub fn is_streaming(&self) -> bool

Check if this operation expects a streaming response

Trait Implementations

impl Clone for A2AOperation

fn clone(&self) -> A2AOperation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for A2AOperation

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

Formats the value using the given formatter.