Struct Activity 

pub struct Activity {
    pub task: Option<String>,
    pub ctx: Option<String>,
    pub phase: Phase,
    pub tool: Option<String>,
    pub round: u32,
    pub tokens_in: u64,
    pub tokens_out: u64,
    pub started_ms: u64,
    pub updated_ms: u64,
}

One working unit’s live activity.

Fields

task: Option<String>

The A2A task this unit answers (the client keys on it), when it has one.

ctx: Option<String>

The conversation, when the unit is a turn.

phase: Phase

tool: Option<String>

The tool executing right now (phase tool).

round: u32

The model round this unit is on (1-based).

tokens_in: u64

Tokens this unit has spent so far.

tokens_out: u64

started_ms: u64

When the unit started (clients tick elapsed from this).

updated_ms: u64

Implementations

impl Activity

pub fn apply(&mut self, event: &str, fields: &Value) -> bool

Fold one progress frame in. Returns true when the change is worth telling clients about (phase / tool / round moved) — token-only and clock-only updates are silent.

pub fn park(&mut self, what: &str) -> bool

Park the unit (a deferred tool: sleep, subagent, human gate).

pub fn to_value(&self) -> Value

Trait Implementations

impl Clone for Activity

fn clone(&self) -> Activity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Activity

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

Formats the value using the given formatter.