Struct TraceLayer

pub struct TraceLayer<M, MakeSpan = DefaultMakeSpan, OnRequest = DefaultOnRequest, OnResponse = DefaultOnResponse, OnBodyChunk = DefaultOnBodyChunk, OnEos = DefaultOnEos, OnFailure = DefaultOnFailure> { /* private fields */ }

Layer that adds high level tracing to a Service.

See the module docs for more details.

Implementations

impl<M> TraceLayer<M>

pub fn new(make_classifier: M) -> Self

where M: MakeClassifier,

Create a new TraceLayer using the given MakeClassifier.

impl<M, MakeSpan, OnRequest, OnResponse, OnBodyChunk, OnEos, OnFailure> TraceLayer<M, MakeSpan, OnRequest, OnResponse, OnBodyChunk, OnEos, OnFailure>

pub fn on_request<NewOnRequest>( self, new_on_request: NewOnRequest, ) -> TraceLayer<M, MakeSpan, NewOnRequest, OnResponse, OnBodyChunk, OnEos, OnFailure>

Customize what to do when a request is received.

NewOnRequest is expected to implement OnRequest.

pub fn on_response<NewOnResponse>( self, new_on_response: NewOnResponse, ) -> TraceLayer<M, MakeSpan, OnRequest, NewOnResponse, OnBodyChunk, OnEos, OnFailure>

Customize what to do when a response has been produced.

NewOnResponse is expected to implement OnResponse.

pub fn on_body_chunk<NewOnBodyChunk>( self, new_on_body_chunk: NewOnBodyChunk, ) -> TraceLayer<M, MakeSpan, OnRequest, OnResponse, NewOnBodyChunk, OnEos, OnFailure>

Customize what to do when a body chunk has been sent.

NewOnBodyChunk is expected to implement OnBodyChunk.

pub fn on_eos<NewOnEos>( self, new_on_eos: NewOnEos, ) -> TraceLayer<M, MakeSpan, OnRequest, OnResponse, OnBodyChunk, NewOnEos, OnFailure>

Customize what to do when a streaming response has closed.

NewOnEos is expected to implement OnEos.

pub fn on_failure<NewOnFailure>( self, new_on_failure: NewOnFailure, ) -> TraceLayer<M, MakeSpan, OnRequest, OnResponse, OnBodyChunk, OnEos, NewOnFailure>

Customize what to do when a response has been classified as a failure.

NewOnFailure is expected to implement OnFailure.

pub fn make_span_with<NewMakeSpan>( self, new_make_span: NewMakeSpan, ) -> TraceLayer<M, NewMakeSpan, OnRequest, OnResponse, OnBodyChunk, OnEos, OnFailure>

Customize how to make Spans that all request handling will be wrapped in.

NewMakeSpan is expected to implement MakeSpan.

impl TraceLayer<HttpMakeClassifier>

pub fn new_for_http() -> Self

Create a new TraceLayer using ServerErrorsAsFailures which supports classifying regular HTTP responses based on the status code.

impl TraceLayer<GrpcMakeClassifier>

pub fn new_for_grpc() -> Self

Create a new TraceLayer using GrpcErrorsAsFailures which supports classifying gRPC responses and streams based on the grpc-status header.

Trait Implementations

impl<M: Clone, MakeSpan: Clone, OnRequest: Clone, OnResponse: Clone, OnBodyChunk: Clone, OnEos: Clone, OnFailure: Clone> Clone for TraceLayer<M, MakeSpan, OnRequest, OnResponse, OnBodyChunk, OnEos, OnFailure>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<M: Debug, MakeSpan: Debug, OnRequest: Debug, OnResponse: Debug, OnBodyChunk: Debug, OnEos: Debug, OnFailure: Debug> Debug for TraceLayer<M, MakeSpan, OnRequest, OnResponse, OnBodyChunk, OnEos, OnFailure>

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

Formats the value using the given formatter.

impl<S, M, MakeSpan, OnRequest, OnResponse, OnBodyChunk, OnEos, OnFailure> Layer<S> for TraceLayer<M, MakeSpan, OnRequest, OnResponse, OnBodyChunk, OnEos, OnFailure>

where M: Clone, MakeSpan: Clone, OnRequest: Clone, OnResponse: Clone, OnEos: Clone, OnBodyChunk: Clone, OnFailure: Clone,

type Service = Trace<S, M, MakeSpan, OnRequest, OnResponse, OnBodyChunk, OnEos, OnFailure>

The service produced by the layer.

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

Wrap the given service with the middleware, returning a new service.