Struct TierLayer 

pub struct TierLayer { /* private fields */ }

Tower middleware layer that resolves TierInfo and inserts it into request extensions.

Apply with .layer() on the router. Guards (super::require_feature, super::require_limit) are applied separately with .route_layer().

Owner ID extraction

The extractor closure reads from &Parts (populated by upstream middleware) and returns Some(owner_id) or None.

Default tier

When the extractor returns None and a default is set via with_default, the default TierInfo is inserted. Otherwise, no TierInfo is inserted and the inner service is called directly — downstream guards handle the absence.

Implementations

impl TierLayer

pub fn new<F>(resolver: TierResolver, extractor: F) -> Self

where F: Fn(&Parts) -> Option<String> + Send + Sync + 'static,

Create a new tier layer.

extractor is a sync closure that returns the owner ID from request parts, or None if no owner context is available.

pub fn with_default(self, default: TierInfo) -> Self

When the extractor returns None, inject this TierInfo instead of skipping.

Trait Implementations

impl Clone for TierLayer

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S> Layer<S> for TierLayer

type Service = TierMiddleware<S>

The wrapped service

fn layer(&self, inner: S) -> Self::Service

Wrap the given service with the middleware, returning a new service that has been decorated with the middleware.