Struct RetentionPolicy 

pub struct RetentionPolicy {
    pub rules: BTreeMap<String, RetentionRule>,
    pub default_rule: RetentionRule,
}

Per-surface retention policy: surface tag → rule, with a conservative keep-all default for unknown surfaces. Applies to the grow-only log tier only — the LWW registry tier is already one compact record per id, and the proposal’s table assigns it no retention.

Fields

rules: BTreeMap<String, RetentionRule>

default_rule: RetentionRule

Implementations

impl RetentionPolicy

pub fn keep_all() -> Self

Retain everything — the exact-checkpoint policy (compaction still drops ops; the snapshot just keeps their full folded state).

pub fn proposal_default( conversation_last_n: usize, trajectory_max_age_ms: u64, ) -> Self

The proposal’s retention table. Two rows are deployment-configurable in the proposal itself and therefore parameters here: conversations’ N (“= today’s max_turns” — a memgine config value, not a global constant) and trajectories’ D days (given as max_age_ms). Runs use the shipped RunStore::gc constants (RUNS_MAX_PER_AGENT/RUNS_MAX_AGE_MS); knowledge, skills, and routing observations keep all (routing’s keep-all is also enforced structurally — see CompactError::EventStreamRetention).

pub fn rule_for(&self, surface_tag: &str) -> &RetentionRule

Trait Implementations

impl Clone for RetentionPolicy

fn clone(&self) -> RetentionPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RetentionPolicy

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

Formats the value using the given formatter.

impl Default for RetentionPolicy

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RetentionPolicy

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for RetentionPolicy

impl PartialEq for RetentionPolicy

fn eq(&self, other: &RetentionPolicy) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for RetentionPolicy

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for RetentionPolicy