Struct Event 

pub struct Event {
    pub kind: EventKind,
    pub run_id: Option<String>,
    pub client_id: Option<String>,
    pub policy_session_id: Option<String>,
    pub action_id: Option<String>,
    pub proposal_id: Option<String>,
    pub data: HashMap<String, Value>,
    pub timestamp: DateTime<Utc>,
    pub prev_hash: Option<String>,
    pub hash: Option<String>,
}

A single event in the log.

Fields

kind: EventKind

run_id: Option<String>

Authenticated active-run identity stamped by CAR at append time. Historical journals omit this field and replay as None.

client_id: Option<String>

WebSocket client identity that opened run_id via runs.start. Never reconstructed from the journal filename during replay.

policy_session_id: Option<String>

CAR-minted policy-session identity used for this proposal, when the caller selected a live session.policy.open session. Unvalidated caller labels are never copied here.

action_id: Option<String>

proposal_id: Option<String>

data: HashMap<String, Value>

timestamp: DateTime<Utc>

prev_hash: Option<String>

Hash of the previous event in the chain (EPIC A / A9 tamper- evidence). None when hash chaining is disabled (the default) — the field is skipped in serialization, so logs without chaining are byte-identical to before this was added.

hash: Option<String>

This event’s own content hash, computed over its fields plus prev_hash. Present only when hash chaining is enabled.

Implementations

impl Event

pub fn duration_ms(&self) -> Option<f64>

Wall-clock duration recorded on this event, if any.

pub fn tokens_in(&self) -> Option<u64>

Input tokens recorded on this event, if any.

pub fn tokens_out(&self) -> Option<u64>

Output tokens recorded on this event, if any.

pub fn cost_usd(&self) -> Option<f64>

Estimated cost (USD) recorded on this event, if any.

pub fn metrics(&self) -> Metrics

All metrics carried on this event, gathered into a Metrics.

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 PartialEq for Event

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

Equality operator ==.

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

Inequality operator !=.

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.

impl StructuralPartialEq for Event