Trait ServiceBuilderExt

pub trait ServiceBuilderExt<L>: Sealed<L> + Sized {
    // Required methods
    fn trace_for_http(
        self,
    ) -> ServiceBuilder<Stack<TraceLayer<HttpMakeClassifier>, L>>;
    fn trace_for_grpc(
        self,
    ) -> ServiceBuilder<Stack<TraceLayer<GrpcMakeClassifier>, L>>;
    fn override_request_header<M>(
        self,
        header_name: HeaderName,
        make: M,
    ) -> ServiceBuilder<Stack<SetRequestHeaderLayer<M>, L>>;
    fn append_request_header<M>(
        self,
        header_name: HeaderName,
        make: M,
    ) -> ServiceBuilder<Stack<SetRequestHeaderLayer<M>, L>>;
    fn insert_request_header_if_not_present<M>(
        self,
        header_name: HeaderName,
        make: M,
    ) -> ServiceBuilder<Stack<SetRequestHeaderLayer<M>, L>>;
    fn override_response_header<M>(
        self,
        header_name: HeaderName,
        make: M,
    ) -> ServiceBuilder<Stack<SetResponseHeaderLayer<M>, L>>;
    fn append_response_header<M>(
        self,
        header_name: HeaderName,
        make: M,
    ) -> ServiceBuilder<Stack<SetResponseHeaderLayer<M>, L>>;
    fn insert_response_header_if_not_present<M>(
        self,
        header_name: HeaderName,
        make: M,
    ) -> ServiceBuilder<Stack<SetResponseHeaderLayer<M>, L>>;
    fn set_request_id<M>(
        self,
        header_name: HeaderName,
        make_request_id: M,
    ) -> ServiceBuilder<Stack<SetRequestIdLayer<M>, L>>
       where M: MakeRequestId;
    fn propagate_request_id(
        self,
        header_name: HeaderName,
    ) -> ServiceBuilder<Stack<PropagateRequestIdLayer, L>>;

    // Provided methods
    fn set_x_request_id<M>(
        self,
        make_request_id: M,
    ) -> ServiceBuilder<Stack<SetRequestIdLayer<M>, L>>
       where M: MakeRequestId { ... }
    fn propagate_x_request_id(
        self,
    ) -> ServiceBuilder<Stack<PropagateRequestIdLayer, L>> { ... }
}

Extension trait that adds methods to tower::ServiceBuilder for adding middleware from tower-http.

Example

use http::{Request, Response, header::HeaderName};
use bytes::Bytes;
use http_body_util::Full;
use std::{time::Duration, convert::Infallible};
use tower::{ServiceBuilder, ServiceExt, Service};
use tower_http::ServiceBuilderExt;

async fn handle(request: Request<Full<Bytes>>) -> Result<Response<Full<Bytes>>, Infallible> {
    Ok(Response::new(Full::default()))
}

let service = ServiceBuilder::new()
    // Methods from tower
    .timeout(Duration::from_secs(30))
    // Methods from tower-http
    .trace_for_http()
    .propagate_header(HeaderName::from_static("x-request-id"))
    .service_fn(handle);

Required Methods

fn trace_for_http( self, ) -> ServiceBuilder<Stack<TraceLayer<HttpMakeClassifier>, L>>

High level tracing that classifies responses using HTTP status codes.

This method does not support customizing the output, to do that use TraceLayer instead.

See tower_http::trace for more details.

fn trace_for_grpc( self, ) -> ServiceBuilder<Stack<TraceLayer<GrpcMakeClassifier>, L>>

High level tracing that classifies responses using gRPC headers.

This method does not support customizing the output, to do that use TraceLayer instead.

See tower_http::trace for more details.

fn override_request_header<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetRequestHeaderLayer<M>, L>>

Insert a header into the request.

If a previous value exists for the same header, it is removed and replaced with the new header value.

See tower_http::set_header for more details.

fn append_request_header<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetRequestHeaderLayer<M>, L>>

Append a header into the request.

If previous values exist, the header will have multiple values.

See tower_http::set_header for more details.

fn insert_request_header_if_not_present<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetRequestHeaderLayer<M>, L>>

Insert a header into the request, if the header is not already present.

See tower_http::set_header for more details.

fn override_response_header<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetResponseHeaderLayer<M>, L>>

Insert a header into the response.

If a previous value exists for the same header, it is removed and replaced with the new header value.

See tower_http::set_header for more details.

fn append_response_header<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetResponseHeaderLayer<M>, L>>

Append a header into the response.

If previous values exist, the header will have multiple values.

See tower_http::set_header for more details.

fn insert_response_header_if_not_present<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetResponseHeaderLayer<M>, L>>

Insert a header into the response, if the header is not already present.

See tower_http::set_header for more details.

fn set_request_id<M>( self, header_name: HeaderName, make_request_id: M, ) -> ServiceBuilder<Stack<SetRequestIdLayer<M>, L>>

where M: MakeRequestId,

Add request id header and extension.

See tower_http::request_id for more details.

fn propagate_request_id( self, header_name: HeaderName, ) -> ServiceBuilder<Stack<PropagateRequestIdLayer, L>>

Propgate request ids from requests to responses.

See tower_http::request_id for more details.

Provided Methods

fn set_x_request_id<M>( self, make_request_id: M, ) -> ServiceBuilder<Stack<SetRequestIdLayer<M>, L>>

where M: MakeRequestId,

Add request id header and extension, using x-request-id as the header name.

See tower_http::request_id for more details.

fn propagate_x_request_id( self, ) -> ServiceBuilder<Stack<PropagateRequestIdLayer, L>>

Propgate request ids from requests to responses, using x-request-id as the header name.

See tower_http::request_id for more details.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<L> ServiceBuilderExt<L> for ServiceBuilder<L>

fn trace_for_http( self, ) -> ServiceBuilder<Stack<TraceLayer<HttpMakeClassifier>, L>>

fn trace_for_grpc( self, ) -> ServiceBuilder<Stack<TraceLayer<GrpcMakeClassifier>, L>>

fn override_request_header<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetRequestHeaderLayer<M>, L>>

fn append_request_header<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetRequestHeaderLayer<M>, L>>

fn insert_request_header_if_not_present<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetRequestHeaderLayer<M>, L>>

fn override_response_header<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetResponseHeaderLayer<M>, L>>

fn append_response_header<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetResponseHeaderLayer<M>, L>>

fn insert_response_header_if_not_present<M>( self, header_name: HeaderName, make: M, ) -> ServiceBuilder<Stack<SetResponseHeaderLayer<M>, L>>

fn set_request_id<M>( self, header_name: HeaderName, make_request_id: M, ) -> ServiceBuilder<Stack<SetRequestIdLayer<M>, L>>

where M: MakeRequestId,

fn propagate_request_id( self, header_name: HeaderName, ) -> ServiceBuilder<Stack<PropagateRequestIdLayer, L>>

Implementors