databendlabs / openraft / 21021457713

88%

Build Type

push

github

Committed by drmingdrmer

Commit Message

refactor: add multi-slot support to `Histogram` with extracted log scale

Refactor histogram implementation to support sliding-window metrics through
multiple slots. Each slot contains independent bucket counts and optional
user-defined metadata. Extract logarithmic scale logic into dedicated modules
for better organization and reusability.

Changes:
- Make `Histogram` generic with `Histogram<T = ()>` for slot metadata
- Add `Slot<T>` struct for per-slot bucket counts and metadata
- Extract `LogScale<WIDTH>` with precomputed lookup tables
- Extract `LogScaleConfig<WIDTH>` for compile-time bucket configuration
- Add `advance()` method for slot rotation with oldest eviction
- Add `active_slot_count()` and `capacity()` methods
- Maintain aggregate bucket counts across all active slots

Run Details

320 of 323 new or added lines in 5 files covered. (99.07%)

3 existing lines in 3 files now uncovered.

15804 of 18009 relevant lines covered (87.76%)

148555.95 hits per line