Struct Event 

pub struct Event {
    pub phase: Phase,
    pub source: EventSource,
    pub category: EventCategory,
    pub code: Option<&'static str>,
}

Public lifecycle event payload.

The required public shape in 0.6.0 is the typed phase + source + category triple. Producing surfaces may attach additional structured operation identity or timing context per dev/design/lifecycle.md § Public event contract.

code carries a stable machine-readable identifier for events that represent a concrete failure: SQLite-internal events use the SQLite extended-code name (e.g. "SQLITE_SCHEMA", "SQLITE_BUSY"); engine errors use the stable EngineError::stable_code value (e.g. "StorageError", "WriteValidationError" — matching the binding matrix in dev/design/errors.md). Non-error events leave code None. AC-021 dispatches on code rather than counting all error events — without it the test cannot distinguish SQLITE_SCHEMA from any other engine error.

Fields

phase: Phase

source: EventSource

category: EventCategory

code: Option<&'static str>

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.