Trait tower_http::trace::OnRequest
source · pub trait OnRequest<B> {
// Required method
fn on_request(&mut self, request: &Request<B>, span: &Span);
}
Expand description
Trait used to tell Trace
what to do when a request is received.
See the module docs for details on exactly when the
on_request
callback is called.
Required Methods§
sourcefn on_request(&mut self, request: &Request<B>, span: &Span)
fn on_request(&mut self, request: &Request<B>, span: &Span)
Do the thing.
span
is the tracing
Span
, corresponding to this request, produced by the closure
passed to TraceLayer::make_span_with
. It can be used to record field values
that weren’t known when the span was created.