Enum Tick 

pub enum Tick {
    Progressed(ApplySummary),
    Idle,
    RolledBack {
        to: Option<Position>,
    },
    Resynced,
    SourceError,
    DurabilityLost,
    Terminal(EngineStatus),
}

Outcome of one driver tick.

Variants

Progressed(ApplySummary)

Batch applied; the summary counts what the fold saw.

Idle

Poll returned nothing new.

RolledBack

A fork rolled the engine back to a checkpoint.

Fields

to: Option<Position>

Cursor the rollback restored.

Resynced

Engine reset to genesis; the next poll carries no cursor.

SourceError

Source or its contract failed; the next delay backs off.

DurabilityLost

Sink refused a snapshot offer; reported once, folding continues unpersisted.

Terminal(EngineStatus)

Engine can make no further automated progress.

Trait Implementations

impl Clone for Tick

fn clone(&self) -> Tick

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Tick

impl Debug for Tick

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

Formats the value using the given formatter.

impl Eq for Tick

impl PartialEq for Tick

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Tick