Module metrics 

Available on crate feature schedule only.

Scheduler metrics, emitted via the metrics facade. pipeline is the only label (low cardinality); per-row outcomes are covered by the pipeline-run metrics in faucet-core. No-ops when no recorder is installed.

Functions

consecutive_failures

describe

Register HELP text for every scheduler metric. Idempotent — safe to call more than once. Called from the scheduler loop at startup so the series’ descriptions are present in /metrics from t=0, even before the first tick.

heartbeat

in_flight

last_run_completed

last_run_duration

last_run_started

lateness

late may be negative if a run started slightly early; clamp to 0.

next_tick

overlap

policy ∈ {"skip", "queue", "forbid"}.

run_outcome

outcome ∈ {"ok", "err", "skipped"}.