Struct BaselineStore 

pub struct BaselineStore { /* private fields */ }

Available on crate feature eval only.

Manages baseline persistence and regression detection.

Implementations

impl BaselineStore

pub fn new(path: impl Into<PathBuf>) -> BaselineStore

Create a new baseline store at the given path.

pub fn save( &self, eval_set_id: &str, metrics: &HashMap<String, HashMap<String, f64>>, ) -> Result<(), EvalError>

Save metrics as a baseline.

Writes the metrics map with a timestamp and eval set identifier to the configured path as pretty-printed JSON.

pub fn load(&self) -> Result<Option<Baseline>, EvalError>

Load existing baseline.

Returns Ok(None) if the baseline file does not exist. Returns an error only for actual I/O or parse failures.

pub fn check_regressions( &self, current: &HashMap<String, HashMap<String, f64>>, tolerance: f64, ) -> Result<Vec<Regression>, EvalError>

Compare current metrics against baseline and detect regressions.

A regression is detected when baseline_value - current_value > tolerance. If no baseline file exists, returns an empty vector (no regressions).