kubernetes/staging/src/k8s.io/apiserver/pkg/endpoints/filters/request_received_time.go

// WithRequestReceivedTimestamp attaches the ReceivedTimestamp (the time the request reached
// the apiserver) to the context.
func WithRequestReceivedTimestamp(handler http.Handler) http.Handler { … }

// The clock is passed as a parameter, handy for unit testing.
func withRequestReceivedTimestampWithClock(handler http.Handler, clock clock.PassiveClock) http.Handler { … }