Struct ExtensionKey 

pub struct ExtensionKey {
    pub kind_path: String,
    pub instance_id: Option<String>,
}

(kind_path, instance_id) composite key identifying one extension binding in Environment::extensions. kind_path is the canonical ExtensionKind::path() form (e.g. "capability/memory/long-term").

instance_id is Option<String>: a None binding (the unnamed default) and a Some("default") binding on the same kind_path are distinct and may coexist — two None bindings on the same path collide. This mirrors ExtensionBinding::instance_id.

Serde shape (PR-4.2d): the key rides inside ExtensionKeyedPayload on the A8 wire as {"kind_path": …, "instance_id": …} — instance_id is serialized explicitly (null for None, matching the PR-3b client’s encoding) and tolerated absent on deserialize.

Fields

kind_path: String

instance_id: Option<String>

Implementations

impl ExtensionKey

pub fn new(kind_path: impl Into<String>, instance_id: Option<String>) -> Self

pub fn from_binding(b: &ExtensionBinding) -> Self

Derive the key from an existing ExtensionBinding, mirroring the (descriptor-path, instance_id) convention in the deployer CLI.

pub fn matches(&self, b: &ExtensionBinding) -> bool

Whether b carries this (kind_path, instance_id) key. Borrowed comparison — no allocation per element, so it’s cheap inside a scan.

Trait Implementations

impl Clone for ExtensionKey

fn clone(&self) -> ExtensionKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExtensionKey

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ExtensionKey

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ExtensionKey

Wire-stable rendering used by audit-event targets and CLI outcome JSON. <kind_path>/<instance_id> when an instance is present, otherwise just <kind_path>. Mirrors the deployer CLI’s Display so existing operator-facing strings stay byte-identical.

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

Formats the value using the given formatter.

impl Eq for ExtensionKey

impl Hash for ExtensionKey

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ExtensionKey

fn eq(&self, other: &ExtensionKey) -> 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 ExtensionKey

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 ExtensionKey