Make use of pre-existing context in InstrumentRoundTripperTrace

Fixes #580 Signed-off-by: beorn7 <bjoern@rabenste.in>
2019-05-16 11:03:34 +02:00 · 2019-05-16 11:03:34 +02:00 · bc54582c5e
parent 6c520f6aca
commit bc54582c5e
1 changed files with 1 additions and 2 deletions
--- a/prometheus/promhttp/instrument_client.go
+++ b/prometheus/promhttp/instrument_client.go
@ -14,7 +14,6 @@
 package promhttp

 import (
-	"context"
 	"crypto/tls"
 	"net/http"
 	"net/http/httptrace"
@ -213,7 +212,7 @@ func InstrumentRoundTripperTrace(it *InstrumentTrace, next http.RoundTripper) Ro
 				}
 			},
 		}
-		r = r.WithContext(httptrace.WithClientTrace(context.Background(), trace))
+		r = r.WithContext(httptrace.WithClientTrace(r.Context(), trace))

 		return next.RoundTrip(r)
 	})