reduce options

Signed-off-by: Sandor Szücs <sandor.szuecs@zalando.de>

Author: szuecs

proxy/proxy.go

@@ -897,7 +897,7 @@ func (p *Proxy) writeTraceIfTooSlow(ctx *context) {
 				p.log.Errorf("Failed to get successful response from %s: (%d) %s", p.flightRecorderURL.String(), rsp.StatusCode, rsp.Status)
 			}
 		default:
-			p.log.Errorf("Failed to write trace, unknown FlightRecorderURL %q", p.flightRecorderURL.Scheme)
+			p.log.Errorf("Failed to write trace, unknown FlightRecorderURL scheme %q", p.flightRecorderURL.Scheme)
 		}
 	}
 }

skipper.go

@@ -462,9 +462,6 @@ type Options struct {
 	// MemProfileRate calls runtime.SetMemProfileRate(MemProfileRate) if non zero value, deactivate with <0
 	MemProfileRate int
 
-	// EnableFlightRecorder enables trace.FlightRecorder https://pkg.go.dev/golang.org/x/exp/trace#FlightRecorder to support Go tool trace.
-	EnableFlightRecorder bool
-
 	// FlightRecorderSizeBytes set size of the FlightRecorder https://pkg.go.dev/golang.org/x/exp/trace#FlightRecorder.SetSize
 	FlightRecorderSize int
 
@@ -474,7 +471,10 @@ type Options struct {
 	// FlightRecorderTargetURL is the target to write the trace
 	// to. Supported targets are http URL and file URL. Skipper
 	// will try to upload the trace data by an http PUT request to
-	// this http URL.  request
+	// this http URL. This is required to set if you want to have
+	// trace.FlightRecorder
+	// https://pkg.go.dev/golang.org/x/exp/trace#FlightRecorder
+	// enabled to support Go tool trace.
 	FlightRecorderTargetURL string
 
 	// Flag that enables reporting of the Go garbage collector statistics exported in debug.GCStats
@@ -2048,7 +2048,7 @@ func run(o Options, sig chan os.Signal, idleConnsCH chan struct{}) error {
 			fr = nil
 		}
 	}
-	log.Infof("FlightRecorder enabled %v: %v", o.EnableFlightRecorder, fr)
+	log.Infof("FlightRecorder: %v", fr)
 
 	proxyFlags := proxy.Flags(o.ProxyOptions) | o.ProxyFlags
 	proxyParams := proxy.Params{