Struct CheckpointSeverityState 

pub struct CheckpointSeverityState { /* private fields */ }

ADR-091 severity ladder state, carried across ticks by the caller alongside TruncateState. Pure state machine: no I/O, no logging — callers turn the returned emissions into tracing calls.

Implementations

impl CheckpointSeverityState

pub fn observe_wal_pages( &mut self, wal_pages: u64, config: &CheckpointConfig, ) -> Vec<CheckpointSeverityEmission>

Advance the severity ladder by one observed tick and return every rung crossed on this tick (zero, one, or two emissions: a fresh elevation episode can produce INFO and, if warn_sustained_cycles is 1, WARN on the very same tick).

A below-warn tick resets both the consecutive-cycle counter and the per-episode WARN latch, re-arming INFO/WARN for a later episode. Skipped ticks must not be passed here at all — the caller only calls this on CheckpointTick::Observed, matching the existing threshold-crossing WARN’s skip-leaves-state-unchanged rule.

Trait Implementations

impl Clone for CheckpointSeverityState

fn clone(&self) -> CheckpointSeverityState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CheckpointSeverityState

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

Formats the value using the given formatter.

impl Default for CheckpointSeverityState

fn default() -> CheckpointSeverityState

Returns the “default value” for a type.