Struct DefaultMetricsCallbackProvider 

pub struct DefaultMetricsCallbackProvider {}

Trait Implementations

impl Clone for DefaultMetricsCallbackProvider

fn clone(&self) -> DefaultMetricsCallbackProvider

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for DefaultMetricsCallbackProvider

fn default() -> DefaultMetricsCallbackProvider

Returns the “default value” for a type.

impl MetricsCallbackProvider for DefaultMetricsCallbackProvider

fn on_request(&self, _path: String)

Method will be called when a request has been received. path: the endpoint uri path

fn on_response( &self, _path: String, _latency: Duration, _status: u16, _grpc_status_code: Code, )

Method to be called from the server when a request is performed. path: the endpoint uri path latency: the time when the request was received and when the response was created status: the http status code of the response grpc_status_code: the grpc status code (see https://github.com/grpc/grpc/blob/master/doc/statuscodes.md#status-codes-and-their-use-in-grpc)

fn on_error(&self, _latency: Duration, _grpc_status_code: Code)

Called when a gRPC request fails at the transport/middleware level (e.g. service panic, connection drop, timeout). gRPC application errors (non-OK status codes) are NOT reported here — they are already captured by on_response. The method path is not available at this layer (tower-http’s on_failure callback does not receive the response object).

fn on_start(&self, _path: &str)

Called when request call is started

fn on_drop(&self, _path: &str)

Called when request call is dropped. It is guaranteed that for each on_start there will be corresponding on_drop