Module middleware 

Tower middleware helpers.

Re-exports

pub use crate::context::ClientKind;

pub use crate::context::IdentityExtractor;

pub use crate::context::RequestContext;

pub use crate::context::RequestIdentity;

pub use crate::context::api_key_identity;

pub use crate::context::client_ip_identity;

pub use crate::context::context_identity;

pub use crate::context::trusted_proxy_client_ip_identity;

Structs

ApiDefaults

High-level configurable API defaults built from explicit Axum/Tower primitives.

BodyLimitLayer

Tower layer that rejects requests with a declared oversized body.

BodyLimitService

Service produced by BodyLimitLayer.

CatchPanicLayer

Tower layer that catches panics from the inner service.

CatchPanicService

Service produced by CatchPanicLayer.

InMemoryRateLimitStore

In-memory rate-limit store intended for local development and single-process apps.

MetricsLayer

Tower layer that invokes HttpMetricsHook for request lifecycle metrics.

MetricsService

Service produced by MetricsLayer.

PrometheusMetrics

In-memory Prometheus-format HTTP metrics collector.

RateLimitConfig

Typed config for production-shaped rate limiting.

RateLimitDecision

Decision returned by a rate-limit store.

RateLimitError

Error returned by rate-limit stores.

RateLimitLayer

Tower layer that applies configured rate limiting.

RateLimitService

Service produced by RateLimitLayer.

RequestContextLayer

Tower layer that inserts request/correlation context into request extensions.

RequestContextService

Service produced by RequestContextLayer.

RequestIdConfig

Typed configuration for validated request ID propagation.

RequestIdLayer

Legacy Tower layer that adds an x-request-id response header when absent.

RequestIdService

Service produced by RequestIdLayer.

RequestScopeLayer

Tower layer that creates one dependency request scope per HTTP request.

RequestScopeService

Service produced by RequestScopeLayer.

RouteMakeSpan

Span maker that records request method, URI, and a stable route label.

SecurityHeadersLayer

Tower layer that adds conservative API security headers to responses.

SecurityHeadersService

Service produced by SecurityHeadersLayer.

TimeoutResponseLayer

Tower layer that maps elapsed inner work to an HTTP timeout response.

TimeoutResponseService

Service produced by TimeoutResponseLayer.

ValidatedRequestIdLayer

Tower layer that validates, generates, stores, and propagates request IDs.

ValidatedRequestIdService

Service produced by ValidatedRequestIdLayer.

Enums

RequestIdMode

Request ID validation behavior for inbound x-request-id values.

Traits

HttpMetricsHook

Backend-neutral hook for recording HTTP request metrics.

RateLimitStore

Store adapter used by rate-limit layers.

Functions

body_limit_layer

Creates a request body limit layer using the declared Content-Length.

catch_panic_layer

Creates a layer that catches panics from the inner service and maps them to a 500 Internal Server Error response.

compression_layer

Creates a gzip response compression layer.

cors_layer

Creates a permissive CORS layer for API development and examples.

cors_origin_layer

Creates a CORS layer for a single explicit API origin.

metrics_layer

Creates a metrics hook layer without a stable route label.

rate_limit_layer

Creates a Tower rate limit layer.

request_context_layer

Creates a Tower layer that enriches RequestContext request extensions.

request_id_layer

Creates the legacy response-only request-id layer.

request_scope_layer

Creates a request-scope layer backed by a shared dependency container.

route_metrics_layer

Creates a metrics hook layer that records a stable route label.

route_trace_layer

Creates an HTTP tracing layer that records a stable route label.

security_headers_layer

Creates a layer that applies conservative API security headers.

streaming_body_limit_layer

Creates a streaming request body limit layer.

timeout_layer

Creates a Tower timeout layer.

timeout_response_layer

Creates a timeout layer that maps elapsed inner work to 408 Request Timeout.

trace_layer

Creates an HTTP tracing layer for requests and responses.

validated_request_id_layer

Creates a validated request ID layer.

webhook_body_limit_layer

Creates a request body limit layer for webhook/raw-body routes.

Type Aliases

RequestIdPolicy

Compatibility alias for naming request ID validation policy.