*
 * Promoting the stability level of the metric is a responsibility of the component owner, since it
 * involves explicitly acknowledging support for the metric across multiple releases, in accordance with
 * the metric stability policy.
 */
const (
	successLabel = "success"
	failureLabel = "failure"
	errorLabel   = "error"

	if id == 0 {
		return NoStack
	}
	return Stack{table: e.table, id: id}
}

// Metric returns details about a Metric event.
//
// Panics if Kind != EventMetric.
func (e Event) Metric() Metric {
	if e.Kind() != EventMetric {
		panic("Metric called on non-Metric event")
	}
	var m Metric
	switch e.base.typ {
	case go122.EvProcsChange:
		m.Name = "/sched/gomaxprocs:threads"

package monitoring

import (
	"context"

	api "go.opentelemetry.io/otel/metric"

	"istio.io/istio/pkg/log"
)

type counter struct {
	baseMetric
	c api.Float64Counter
	// precomputedAddOption is just a precomputation to avoid allocations on each record call
	precomputedAddOption []api.AddOption
}

var _ Metric = &counter{}

func newCounter(o options) *counter {
	c, err := meter().Float64Counter(o.name,

)

var registerMetrics sync.Once

// Register all metrics.
func Register() {
	registerMetrics.Do(func() {
		for _, metric := range metrics {
			legacyregistry.MustRegister(metric)
		}
	})
}

// Reset all metrics.
func Reset() {
	for _, metric := range metrics {
		metric.Reset()
	}
}

// UpdateInflightRequestMetrics reports concurrency metrics classified by
// mutating vs Readonly.

	if err := Convert_v2beta2_MetricIdentifier_To_autoscaling_MetricIdentifier(&in.Metric, &out.Metric, s); err != nil {
		return err
	}
	if err := Convert_v2beta2_MetricTarget_To_autoscaling_MetricTarget(&in.Target, &out.Target, s); err != nil {
		return err
	}
	return nil
}

	if err := Convert_v2_MetricIdentifier_To_autoscaling_MetricIdentifier(&in.Metric, &out.Metric, s); err != nil {
		return err
	}
	if err := Convert_v2_MetricTarget_To_autoscaling_MetricTarget(&in.Target, &out.Target, s); err != nil {
		return err
	}
	return nil
}

}

// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
func (in *ExternalMetricSource) DeepCopyInto(out *ExternalMetricSource) {
	*out = *in
	in.Metric.DeepCopyInto(&out.Metric)
	in.Target.DeepCopyInto(&out.Target)
	return
}

// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExternalMetricSource.

  return testing::ExplainMatchResult(
      testing::IsTrue(), is_ok || graph_analysis_failure, result_listener);
}

MATCHER_P2(IncrementedOrFiltered, metric, value,
           "Metric was incremented by value or Status equal to the Graph "
           "Analysis failure") {
  auto graph_analysis_failure = WasGraphAnalysisFailure(arg);
  if (graph_analysis_failure) {

// Register all metrics.
func Register() {
	registerMetrics.Do(func() {
		for _, metric := range metrics {
			legacyregistry.MustRegister(metric)
		}
	})
}

type resettable interface {
	Reset()
}

// Reset all resettable metrics to zero
func Reset() {
	for _, metric := range metrics {
		if rm, ok := metric.(resettable); ok {
			rm.Reset()
		}
	}
}

 *
 * Promoting the stability level of the metric is a responsibility of the component owner, since it
 * involves explicitly acknowledging support for the metric across multiple releases, in accordance with
 * the metric stability policy.
 */
var (
	eventCounter = metrics.NewCounter(
		&metrics.CounterOpts{
			Subsystem:      subsystem,