Struct ExtensionRegistry 

pub struct ExtensionRegistry { /* private fields */ }

Ordered collection of extensions attached to a facilitator or paygate.

Stored as Vec<Arc<dyn DynExtension>> so extensions can be shared across clones. Lookups by ID go through a parallel HashMap.

Implementations

impl ExtensionRegistry

pub fn new() -> Self

Constructs an empty registry.

pub fn register<E: Extension + 'static>(&mut self, extension: E)

Registers an extension. Later registrations of the same id overwrite earlier ones (idempotent insert).

pub fn get(&self, id: &str) -> Option<&dyn DynExtension>

Looks up an extension by its stable id.

pub fn iter(&self) -> impl Iterator<Item = &dyn DynExtension>

Iterates over all registered extensions in registration order.

pub fn is_empty(&self) -> bool

Returns true when no extensions are registered.

pub fn len(&self) -> usize

Number of registered extensions.

pub fn advertise(&self, ctx: &AdvertiseContext<'_>) -> Extensions

Builds a wire-level Extensions block for seller advertising.

pub async fn collect_verify(&self, ctx: &VerifyContext<'_>) -> Extensions

Builds a wire-level Extensions block by collecting each extension’s on_verify return value.

pub async fn collect_settle(&self, ctx: &SettleContext<'_>) -> Extensions

Builds a wire-level Extensions block by collecting each extension’s on_settle return value.

Trait Implementations

impl Clone for ExtensionRegistry

fn clone(&self) -> ExtensionRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExtensionRegistry

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

Formats the value using the given formatter.

impl Default for ExtensionRegistry

fn default() -> ExtensionRegistry

Returns the “default value” for a type.