Struct Engine 

pub struct Engine { /* private fields */ }

The policy evaluation engine.

Loads one or more policies and evaluates incoming actions against them. Rules are evaluated in order; the first matching rule determines the outcome. If no rule matches, the default is to deny (fail-closed).

Implementations

impl Engine

pub fn new() -> Self

Creates a new engine with no policies loaded.

pub fn load_policy(&mut self, policy: Policy)

Loads a policy into the engine.

pub fn load_policy_yaml(&mut self, yaml: &str) -> Result<(), KvlarError>

Loads a policy from a YAML string.

pub fn policy_count(&self) -> usize

Returns the number of loaded policies.

pub fn rule_count(&self) -> usize

Returns the total number of rules across all loaded policies.

pub fn evaluate(&self, action: &Action) -> Decision

Evaluates an action against all loaded policies.

Rules are checked in order across policies (first policy’s rules first). The first matching rule determines the decision. If no rule matches, the policy’s default_outcome is used (defaults to deny / fail-closed).

Trait Implementations

impl Clone for Engine

fn clone(&self) -> Engine

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Engine

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

Formats the value using the given formatter.

impl Default for Engine

fn default() -> Self

Returns the “default value” for a type.