Struct StorageRetentionPolicyEngine 

pub struct StorageRetentionPolicyEngine {
    pub rules: Vec<RetentionRule>,
}

Engine that evaluates storage retention policies against block records.

Rules are maintained in descending priority order so that the highest-priority rule is always evaluated first. Pinned blocks bypass all rules and always receive a Keep decision.

Fields

rules: Vec<RetentionRule>

Active rules, sorted in descending priority order.

Implementations

impl StorageRetentionPolicyEngine

pub fn new() -> Self

Creates a new engine with no rules.

pub fn add_rule(&mut self, rule: RetentionRule)

Adds a rule while maintaining descending priority order.

If two rules share the same priority, the newly inserted rule is placed after all existing rules with the same priority (stable ordering).

pub fn remove_rule(&mut self, rule_id: u64) -> bool

Removes the rule with the given rule_id.

Returns true if a rule was found and removed, false otherwise.

pub fn evaluate(&self, block: &BlockRecord, now_secs: u64) -> PolicyDecision

Evaluates retention policy rules against a single block.

Pinned blocks always receive RetentionAction::Keep with no matched rule. Otherwise, rules are checked in descending priority order; the first rule whose conditions all hold wins. If no rule matches, the default RetentionAction::Keep is returned with matched_rule_id = None.

pub fn evaluate_all( &self, blocks: &[BlockRecord], now_secs: u64, ) -> Vec<PolicyDecision>

Evaluates retention policy rules against every block in blocks.

pub fn stats(&self, decisions: &[PolicyDecision]) -> RetentionStats

Computes aggregate statistics from a slice of policy decisions.

Trait Implementations

impl Clone for StorageRetentionPolicyEngine

fn clone(&self) -> StorageRetentionPolicyEngine

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StorageRetentionPolicyEngine

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

Formats the value using the given formatter.

impl Default for StorageRetentionPolicyEngine

fn default() -> Self

Returns the “default value” for a type.