Enum EngineEvent 

pub enum EngineEvent {
    Progress {
        volume: String,
        entries: u64,
    },
    VolumeReady {
        volume: String,
        entries: u64,
    },
    IndexChanged {
        volume: String,
    },
    RescanStarted {
        volume: String,
    },
    VolumeFailed {
        volume: String,
        message: String,
    },
    EngineError {
        severity: u64,
        volume: String,
    },
}

Asynchronous notification a volume emits to the event sink during scanning and tailing (mapped 1:1 to a contract POD by EngineEvent::to_wire).

Variants

Progress

Initial-scan progress: entries files seen so far on volume.

Fields

volume: String

Volume label (e.g. "C:").

entries: u64

Files indexed so far (running count).

VolumeReady

volume’s initial scan finished; it is now queryable with entries total files.

Fields

volume: String

Volume label (e.g. "C:").

entries: u64

Total files indexed when the scan completed (count).

IndexChanged

Emitted (debounced, engine-side only throttle) after USN batches.

Fields

volume: String

Volume label (e.g. "C:").

RescanStarted

A full rescan of volume has begun (e.g. the USN journal was lost).

Fields

volume: String

Volume label (e.g. "C:").

VolumeFailed

volume could not be opened or scanned; message is the human-readable reason.

Fields

volume: String

Volume label (e.g. "C:").

message: String

Human-readable failure reason.

EngineError

A WARN/ERROR/panic was recorded in the diagnostics ring; the UI pulls details from the metrics snapshot (push notification + pull detail).

Fields

severity: u64

Severity recorded in the diagnostics ring (1=warn, 2=error, 3=panic).

volume: String

Volume label the diagnostic was attributed to (empty if none).

Implementations

impl EngineEvent

pub fn to_wire(&self) -> FmfEvent

The single EngineEvent → contract POD mapping — the FFI callback and the pipe event push both consume this (ADR-0018: no per-boundary kind tables).

Trait Implementations

impl Clone for EngineEvent

fn clone(&self) -> EngineEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EngineEvent

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

Formats the value using the given formatter.