}),
	}

	legacyregistry.MustRegister(m.compilationTime)
	legacyregistry.MustRegister(m.evaluationTime)

	return m
}

// ObserveCompilation records a CEL compilation with the time the compilation took.
func (m *CelMetrics) ObserveCompilation(elapsed time.Duration) {
	seconds := elapsed.Seconds()
	m.compilationTime.Observe(seconds)
}

package metrics

import (
	"math"
	"testing"
	"time"

	"k8s.io/component-base/metrics/legacyregistry"
)

func TestObserveCompilation(t *testing.T) {
	defer legacyregistry.Reset()
	Metrics.ObserveCompilation(2 * time.Second)
	c, s := gatherHistogram(t, "apiserver_cel_compilation_duration_seconds")
	if c != 1 {
		t.Errorf("unexpected count: %v", c)
	}
	if math.Abs(s-2.0) > 1e-7 {
		t.Fatalf("incorrect sum: %v", s)
	}

func Compile(s *schema.Structural, declType *apiservercel.DeclType, perCallLimit uint64, baseEnvSet *environment.EnvSet, envLoader EnvLoader) ([]CompilationResult, error) {
	t := time.Now()
	defer func() {
		metrics.Metrics.ObserveCompilation(time.Since(t))
	}()

	if len(s.XValidations) == 0 {
		return nil, nil
	}
	celRules := s.XValidations

	oldSelfEnvSet, optionalOldSelfEnvSet, err := prepareEnvSet(baseEnvSet, declType)