Struct RegistryState 

pub struct RegistryState {
    pub status: Status,
    pub lifecycle_events: Option<Vec<LifecycleEvent>>,
    pub extensions: Map<String, Value>,
}

Mutable, registry-derived state returned alongside the Body on retrieval.

v0.1.0 contained only status; ACDP 0.3 adds the typed lifecycle_events array (RFC-ACDP-0013, promoting the RFC-ACDP-0009 §2.1 reservation). Registry state is NEVER part of any hash or signature preimage — typing a formerly opaque member is safe — but individual lifecycle events carry their own signatures, so the event OBJECT parse is closed while unknown event_type VALUES are tolerated (RFC-ACDP-0013 §7.3). Other unknown fields are preserved verbatim in Self::extensions so consumers can surface them to operators (RFC-ACDP-0004 §3 forward-compat) and re-serialize the state unchanged.

Reserved extension field names (RFC-ACDP-0009 §2.1)

The following keys remain reserved for future RFCs. Until the relevant RFC ships normative text, consumers see them in Self::extensions (the #[serde(flatten)] map below).

Name	RFC	Purpose
relationships	RFC-ACDP-0009 §2.1 (reserved)	Post-publication builds_on / disputes etc.
attestations	RFC-ACDP-0009 §2.1 (reserved)	Third-party reproduced / audit markers.
subscriptions	RFC-ACDP-0009 §2.1 (reserved)	Push-subscription receipts.

Fields

status: Status

lifecycle_events: Option<Vec<LifecycleEvent>>

Append-only lifecycle event history (RFC-ACDP-0013 §4.1): events in registry-accepted order; never removed, reordered, or mutated. Omitted entirely (never []) when no events exist, per the absent-vs-null wire convention (RFC-ACDP-0005 §2.2.1). Emitted only by registries advertising acdp-registry-lifecycle.

The typed parse preserves round-trip fidelity: every event field re-serializes byte-identically (strict canonical occurred_at, verbatim unknown event_type values), so persisted registry state — and the signed bytes inside each event — survive a parse → re-serialize cycle unchanged. An event violating the closed object schema is malformed registry state and fails the parse (RFC-ACDP-0013 §7.3).

extensions: Map<String, Value>

Forward-compatible passthrough for fields added in future versions (e.g. the reserved relationships, attestations, subscriptions — see the type docs for the reserved set).

Implementations

impl RegistryState

pub fn is_retracted(&self) -> bool

The context’s retraction state (RFC-ACDP-0013 §7.1), derived from Self::lifecycle_events: retracted iff the last retracted/republished event in array order is retracted. Unknown event types have no effect (§7.3).

Trait Implementations

impl Clone for RegistryState

fn clone(&self) -> RegistryState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RegistryState

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for RegistryState

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for RegistryState

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

where __S: Serializer,

Serialize this value into the given Serde serializer.