pub trait OnEos: Send + Sync + 'static {
// Required method
fn on_eos(
self,
trailers: Option<&HeaderMap>,
stream_duration: Duration,
span: &Span,
);
}
Expand description
Trait used to tell Trace
what to do when a stream closes.
See the module docs for details on exactly when the on_eos
callback is called.
Required Methods§
fn on_eos(
self,
trailers: Option<&HeaderMap>,
stream_duration: Duration,
span: &Span,
)
fn on_eos( self, trailers: Option<&HeaderMap>, stream_duration: Duration, span: &Span, )
Do the thing.
stream_duration
is the duration since the response was sent.
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.