pub struct ScalingSignalsCell { /* private fields */ }Available on crate feature
scaling only.Expand description
Lock-free cell the app / transport updates with the current per-pod signals;
the engine tick reads a snapshot. A NaN bit-pattern means
“absent” -> None in the snapshot (contributes 0 to the pressure).
CPU is sampled by the engine tick itself (process cumulative / cores), so it is NOT in this cell – the cell carries only the transport-side signals an app pushes from its receive/send loops.
Implementations§
Source§impl ScalingSignalsCell
impl ScalingSignalsCell
Sourcepub fn set_kafka_assigned_lag(&self, v: f64)
pub fn set_kafka_assigned_lag(&self, v: f64)
Set Kafka per-pod assigned-partition lag (messages).
Sourcepub fn set_redis_pending(&self, v: f64)
pub fn set_redis_pending(&self, v: f64)
Set Redis per-consumer pending / lag (messages).
Sourcepub fn set_inflight(&self, v: f64)
pub fn set_inflight(&self, v: f64)
Set this pod’s in-flight request count (http/grpc).
Sourcepub fn set_shed_rate(&self, v: f64)
pub fn set_shed_rate(&self, v: f64)
Set this pod’s shed/reject rate (events/sec).
Sourcepub fn set_send_backpressure_rate(&self, v: f64)
pub fn set_send_backpressure_rate(&self, v: f64)
Set outbound send-backpressure rate (events/sec).
Sourcepub fn set_refused_rate(&self, v: f64)
pub fn set_refused_rate(&self, v: f64)
Set outbound refused/dropped rate (events/sec).
Sourcepub fn set_produce_queue_depth(&self, v: f64)
pub fn set_produce_queue_depth(&self, v: f64)
Set outbound producer/sink queue depth (messages).
Sourcepub fn set_circuit_open(&self, open: bool)
pub fn set_circuit_open(&self, open: bool)
Set the outbound circuit-breaker state (the only default gate).
Sourcepub fn set_custom(&self, name: &str, value: f64)
pub fn set_custom(&self, name: &str, value: f64)
Set (insert or overwrite) an app-pushed DOMAIN signal by name. These are
NOT known at config-load (apps push them at runtime) and are exposed to
CEL under the custom.<name> map – e.g. set_custom("ch_insert_backlog", n) then a pressure expression custom.ch_insert_backlog / params.ch_target.
Sourcepub fn snapshot(&self) -> TransportSignals
pub fn snapshot(&self) -> TransportSignals
Read a consistent-enough snapshot for this tick (Relaxed – a tick is a periodic best-effort sample, not a linearisation point).
Trait Implementations§
Source§impl Debug for ScalingSignalsCell
impl Debug for ScalingSignalsCell
Auto Trait Implementations§
impl !Freeze for ScalingSignalsCell
impl !RefUnwindSafe for ScalingSignalsCell
impl Send for ScalingSignalsCell
impl Sync for ScalingSignalsCell
impl Unpin for ScalingSignalsCell
impl UnsafeUnpin for ScalingSignalsCell
impl UnwindSafe for ScalingSignalsCell
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