[registry-facade] Start time is not measuring GetSpec time

Author: aledbf

components/registry-facade/pkg/registry/manifest.go

@@ -32,6 +32,8 @@ import (
 )
 
 func (reg *Registry) handleManifest(ctx context.Context, r *http.Request) http.Handler {
+	t0 := time.Now()
+
 	spname, name := getSpecProviderName(ctx)
 	sp, ok := reg.SpecProvider[spname]
 	if !ok {
@@ -72,11 +74,11 @@ func (reg *Registry) handleManifest(ctx context.Context, r *http.Request) http.H
 	}
 
 	res := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		t0 := time.Now()
 		mhandler.ServeHTTP(w, r)
 		dt := time.Since(t0)
 		reg.metrics.ManifestHist.Observe(dt.Seconds())
 	})
+
 	return res
 }