Enum Event 

pub enum Event {
    StateUpdated {
        step_id: Option<String>,
        payload: Value,
    },
    ActionRequested {
        action_id: String,
        payload: Value,
    },
    ActionSucceeded {
        action_id: String,
        output: Value,
    },
    ActionFailed {
        action_id: String,
        error: String,
    },
    Interrupted {
        value: Value,
    },
    Resumed {
        value: Value,
    },
    Completed,
}

A single event in the kernel event log.

Covers: state updates, action lifecycle, interrupt/resume, completion. Aligns with existing trace (StepCompleted → StateUpdated + optional Action*; InterruptReached → Interrupted; ResumeReceived → Resumed).

Variants

StateUpdated

State was updated by the reducer (e.g. after a node step).

Fields

step_id: Option<String>

Optional step/node identifier.

payload: Value

Serialized state or state delta (schema depends on State type).

ActionRequested

An external action was requested (tool, LLM, sleep, wait signal).

Fields

action_id: String

Unique id for this action instance (for matching with result).

payload: Value

Kind and input (e.g. CallTool { tool, input }).

ActionSucceeded

The action completed successfully; output is stored for replay.

Fields

action_id: String

output: Value

ActionFailed

The action failed; error is stored for audit and retry policy.

Fields

action_id: String

error: String

Interrupted

Execution was interrupted (e.g. human-in-the-loop).

Fields

value: Value

Resumed

Execution was resumed with a value after an interrupt.

Fields

value: Value

Completed

The run completed.

Trait Implementations

impl Clone for Event

fn clone(&self) -> Event

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Event

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Event

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Event

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

where __S: Serializer,

Serialize this value into the given Serde serializer.