Enum LivenessTracking 

pub enum LivenessTracking {
    NotTrackedPerTask,
}

How a delivered task’s liveness is tracked, as a value the transport must interpret rather than a bare number it must remember the meaning of.

Distinct from TaskLiveness, which is the tracker’s RECORD of an in-flight activity. This type says whether a task is tracked that way at all.

Why this is a type and not 0

ProtoActivityTask carries no heartbeat window, so a transport that needs one — liminal’s DispatchRequest has the field — cannot derive it and must assign it. Today’s assignment is 0, and it is correct only while liminal dispatches stay outside the server’s per-task liveness tracker: the outbox retry loop is their backstop, so the worker pumps no beats for them.

Written as an exhaustive enum so that the day a liminal dispatch is tracked per task, adding the variant makes every match on it non-exhaustive and the compiler names each site that has to decide again. A literal 0 would simply keep compiling, silently claiming “no window” for a dispatch that now needs one.

Variants

NotTrackedPerTask

This transport does not track the task’s liveness per task; the caller’s own retry path is the backstop.

Implementations

impl LivenessTracking

pub const fn heartbeat_window_ms(self) -> u64

The heartbeat window, in milliseconds, to stamp on the wire.

Zero means “pump no beats for this task” — which every consumer already reads that way, and which is only ever correct for LivenessTracking::NotTrackedPerTask.

Trait Implementations

impl Clone for LivenessTracking

fn clone(&self) -> LivenessTracking

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LivenessTracking

impl Debug for LivenessTracking

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

Formats the value using the given formatter.

impl Eq for LivenessTracking

impl PartialEq for LivenessTracking

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LivenessTracking